阅读说明：本技术 一种vl外星轮自动分组仪 (VL external star wheel automatic grouping instrument ) 是由 李新刚 潘东辉 李学军 李琛燕 王际宇 姚叔彪 贾秀亮 陈嘉珩 于 2020-08-06 设计创作，主要内容包括：本发明公开了一种VL外星轮自动分组仪,包括检测部分、进料部分和出料分组部分,检测部分包括基面识别装置、圆周定位装置以及测量装置,基面识别装置与进料部分连接,用于判定工件基面的朝向是否正确,如果是则继续将工件向下流转至圆周定位装置,如果否则将工件翻转后再向下流转至圆周定位装置；圆周定位装置用于将工件的方位调整到与测量装置的检测方位相同的位置；测量装置用于测量检测工件时位移传感器的实际压缩量,将实际压缩量与标准压缩量进行比较,得出工件的PCD值,标准压缩量为通过标准测量仪器测量标准样件时位移传感器的压缩量获得的。该VL外星轮自动分组仪解决了VL外星轮的自动分组问题,自动化程度高,测量误差小,分组精准。(The invention discloses a VL (variable-frequency) outer star wheel automatic grouping instrument which comprises a detection part, a feeding part and a discharging and grouping part, wherein the detection part comprises a base surface identification device, a circumference positioning device and a measuring device, the base surface identification device is connected with the feeding part and is used for judging whether the orientation of a base surface of a workpiece is correct or not, if so, the workpiece is continuously downwards circulated to the circumference positioning device, and if not, the workpiece is overturned and then downwards circulated to the circumference positioning device; the circumferential positioning device is used for adjusting the position of the workpiece to the position which is the same as the detection position of the measuring device; the measuring device is used for measuring the actual compression amount of the displacement sensor when the workpiece is detected, comparing the actual compression amount with the standard compression amount to obtain the PCD value of the workpiece, and the standard compression amount is obtained by measuring the compression amount of the displacement sensor when the standard sample is measured by the standard measuring instrument. This automatic appearance of dividing into groups of VL besides-star wheel has solved the automatic problem of dividing into groups of VL besides-star wheel, and degree of automation is high, and measuring error is little, divides into groups accurately.)

1. A VL external star wheel automatic grouping instrument is characterized by comprising a detection part (1), a feeding part (2) and a discharging grouping part (3) which are respectively connected with a feeding table (116) and a discharging position of the detection part (1), wherein the detection part (1) comprises a base surface identification device (11), a circumference positioning device (12) and a measuring device (13) which are arranged on a workbench,

the base surface recognition device (11) is connected with the feeding part (2) and is used for judging whether the orientation of the base surface of the workpiece is correct or not, if so, the workpiece continues to flow downwards to the circumferential positioning device (12), and if not, the workpiece is overturned and then flows downwards to the circumferential positioning device (12);

the circumferential positioning device (12) is used for adjusting the orientation of the workpiece to the same position as the detection orientation of the measuring device (13);

the measuring device (13) is used for measuring the actual compression amount of the displacement sensor (1301) when the workpiece is detected, comparing the actual compression amount with the standard compression amount to obtain the PCD value of the workpiece, wherein the standard compression amount is obtained by measuring the compression amount of the displacement sensor (1301) when the standard sample is measured by a standard measuring instrument, and the PCD value of the standard sample is known.

2. The VL outer star wheel automatic grouping instrument according to claim 1, wherein the measuring device (13) comprises a positioning reference plate (131), a plurality of groups of measuring units equally distributed on the periphery of the positioning reference plate (131), and a guide block (134) which is arranged on the upper end surface of the positioning reference plate (131) and has an opening,

the measuring unit comprises a fixed seat (1308) fixed relative to a positioning reference plate (131), a telescopic cylinder (1300) fixed on the side surface of the fixed seat (1308), a displacement sensor (1301) fixed on the upper end surface of the outer end of the fixed seat (1308), two guide shafts (1304) fixed on a middle groove of the fixed seat (1308), a sliding block (1307) and a compression spring (1306) sleeved on the guide shafts (1304), and a fixed block (1302) fixed on the upper end surface of the sliding block (1307), the displacement sensor (1301) is connected with the outer end of the fixed block (1302) through a measuring spring, the telescopic cylinder (1300) is connected with the sliding block (1307) through a mandril (1309), the compression spring (1306) is positioned between the sliding block (1307) and the inner end of the fixed seat (1308), and the inner end of the fixed block (1302) is provided with a measuring head (1305) which can be matched with the workpiece ball channel and can extend out of the opening to be tangent with the workpiece ball channel.

3. The VL besides-star wheel automatic grouping instrument according to claim 2, wherein the measuring unit comprises a pair of positioning measuring units (133) and a plurality of pairs of floating measuring units (132), linear bearings (1303) are arranged between two guide shafts (1304) of the positioning measuring units (133) and holes of the sliding block (1307), the linear bearing (1303) is arranged between one guide shaft (1304) of the floating measuring units (132) and the hole of the sliding block (1307), and a gap is reserved between the other guide shaft (1304) and the hole of the sliding block (1307).

4. The VL besides-star automatic grouping apparatus according to claim 1, further comprising a calibration device (15), wherein the calibration device (15) comprises a calibration base (151) and a positioning ball (152) mounted on the calibration base (151),

the automatic feeding and discharging device is characterized by further comprising a rotary manipulator (14), wherein the rotary manipulator (14) is located at the center of the calibrating device (15), the circumference positioning device (12), the measuring device (13) and the discharging grouping part (3) and used for conveying workpieces on the calibrating device (15), the circumference positioning device (12), the measuring device (13) and the discharging grouping part (3).

5. The VL besides-star automatic grouping instrument according to claim 4, wherein the rotary manipulator (14) comprises a servo motor (141), a rotary spindle (142) connected with the servo motor (141) through a synchronous cog belt and a synchronous pulley, a spindle base (145) for fixing the rotary spindle (142), a fixing frame fixed at the upper end of the rotary spindle (142), four slide bases uniformly distributed on the fixing frame, and pneumatic clamping jaws (143) respectively installed on the slide bases through upper and lower cylinders (144), and the calibration device (15), the circumferential positioning device (12), the measuring device (13) and the discharging grouping part (3) are distributed at intervals of 90 degrees.

6. The VL besides-star wheel automatic grouping instrument as claimed in claim 1, wherein the base surface recognition device (11) comprises a rack, a traverse cylinder (115) fixed on the rack and a feeding table (116) with a jacking block (118), a stop block (119) and a positive and negative detection sensor (1110) arranged at the end of the feeding table (116), a jacking cylinder (117) fixed under the rack and connected with the jacking block (118), a traverse sliding table (111) installed on the rack and connected with the traverse cylinder (115), a lifting cylinder (1113) fixed on the traverse sliding table (111), a lifting sliding table (1112) installed on the traverse sliding table (111) and connected with the lifting cylinder (1113), a rotating cylinder (112) installed on the lifting sliding table (1112), a clamping jaw cylinder (1111) installed on the rotating cylinder (112), And the opening clamp (113) is connected with the clamping jaw cylinder (1111).

7. The VL besides-star wheel automatic grouping instrument as claimed in claim 1, wherein the discharging grouping part (3) comprises a frame, a discharging conveyer belt (31) connected with the discharging position, a code reader (32) and a laser marker (33) arranged at the discharging opening of the discharging conveyer belt (31), a plurality of grouping storage roller ways vertically connected with the discharging conveyer belt (31), and a plurality of discharging pushing cylinders (34) arranged at the discharging conveyer belt (31) and respectively corresponding to each grouping storage roller way.

8. The VL besides-star wheel automatic grouping instrument according to claim 7, wherein the grouping storage roller way comprises a plurality of qualified product roller ways (37) and unqualified product roller ways (36), a sealing cover is arranged on each unqualified product roller way (36), and a mechanical lock (35) is arranged on each sealing cover;

the grouped storage roller way is an unpowered roller shaft with a high front part and a low back part; and the side surface of the grouped storage roller way is provided with a correlation sensor.

9. The VL besides-star wheel automatic grouping instrument according to claim 1, wherein the feeding portion (2) comprises a frame body, a rectifying conveyor belt (22) arranged on the frame body, a feeding conveyor belt (21) vertically connected with the feeding table (116), a feeding pushing cylinder (24) arranged at the tail end of the feeding conveyor belt (21) and parallel to the feeding table (116), and a triangular baffle (23) arranged on the upper portion of the rear end of the rectifying conveyor belt (22) and used for blocking a workpiece from moving to one side of the feeding conveyor belt (21).

10. The VL besides-star automatic grouping instrument according to claim 9, wherein the rectifying conveyor belt (22) and the feeding conveyor belt (21) are driven by a driving motor (26) and a transmission chain, and the driving motor (26) of the rectifying conveyor belt (22) is a forward and reverse rotating motor;

the outside of material loading conveyer belt (21) is provided with and is used for adjusting width limiting plate (28) of material loading conveyer belt (21) width, the rear portion of material loading conveyer belt (21) is provided with limit for height piece (27), the end of material loading conveyer belt (21) is provided with terminal stopper (25).

Technical Field

The invention relates to the technical field of VL (variable Link) outer star wheel PCD value detection grouping, in particular to a VL outer star wheel automatic grouping instrument.

Background

The transmission shaft of the automobile is a direct driving part for the rotation of wheels, and when the automobile runs, the output torque of an engine is transmitted to the transmission shaft through a multi-stage speed change and driving device and then transmitted to the wheels through the transmission shaft, so that the automobile is pushed to move forwards or backwards, and the transmission shaft is an important part for the torque transmission of the automobile. The universal joint is used as a main stressed part of an automobile transmission shaft, and the power transmission direction is changed. The outer star wheel is an important part of a constant-speed universal joint on a car transmission shaft, the ball track span distance (PCD value) of the outer star wheel has high precision requirement, the dimensional tolerance is only 0.05mm, and the inner star wheel and the outer star wheel can move axially relative to each other by reasonably matching the fit clearance, so that the car can run stably. Therefore, the working condition of the VL-section external star wheel is extremely complex, and the performance of the VL-section external star wheel directly influences the safety and reliability of automobile transmission.

Disclosure of Invention

The invention aims to provide a VL outer star wheel automatic grouping instrument which can intelligently realize automatic detection, laser marking, two-dimension code identification, grouping screening and accurate tracing on a VL outer star wheel on line, solves the problem of automatic grouping of the VL outer star wheel, and has the advantages of high automation degree, small measurement error and accurate grouping.

In order to solve the technical problems, the invention provides the following technical scheme:

a VL external star wheel automatic grouping instrument comprises a detection part, a feeding part and a discharging grouping part which are respectively connected with a feeding platform and a discharging position of the detection part, wherein the detection part comprises a base surface identification device, a circumference positioning device and a measuring device which are arranged on a workbench,

the base surface recognition device is connected with the feeding part and used for judging whether the orientation of the base surface of the workpiece is correct or not, if so, the workpiece is continuously downwards circulated to the circumferential positioning device, and if not, the workpiece is overturned and then downwards circulated to the circumferential positioning device;

the circumferential positioning device is used for adjusting the position of the workpiece to the position which is the same as the detection position of the measuring device;

the measuring device is used for measuring the actual compression amount of the displacement sensor when the workpiece is detected, and comparing the actual compression amount with the standard compression amount to obtain the PCD value of the workpiece, wherein the standard compression amount is obtained by measuring the compression amount of the displacement sensor when the standard sample piece is measured by a standard measuring instrument, and the PCD value of the standard sample piece is known.

Preferably, the measuring device comprises a positioning reference plate, a plurality of groups of measuring units equally distributed on the periphery of the positioning reference plate, and a guide block which is arranged on the upper end surface of the positioning reference plate and is provided with an opening,

the measuring unit comprises a fixed seat fixed relative to the positioning reference plate, a telescopic cylinder fixed on the side face of the fixed seat, a displacement sensor fixed on the upper end face of the outer end of the fixed seat, two guide shafts fixed on a middle groove of the fixed seat, a sliding block and a compression spring sleeved on the guide shafts, and a fixed block fixed on the upper end face of the sliding block, wherein the displacement sensor is connected with the outer end of the fixed block through a measuring spring, the telescopic cylinder is connected with the sliding block through a mandril, the compression spring is positioned between the inner ends of the sliding block and the fixed seat, and a measuring head which can be matched with a workpiece ball path and can stretch out of the inner end of the fixed block is tangent to the opening and.

Preferably, the measuring unit comprises a pair of positioning measuring units and a plurality of pairs of floating measuring units, linear bearings are arranged between two guide shafts of the positioning measuring units and the slider holes, a linear bearing is arranged between one guide shaft of the floating measuring units and the slider hole, and a gap is reserved between the other guide shaft of the floating measuring units and the slider hole.

Preferably, the device also comprises a calibration device, the calibration device comprises a calibration base and a positioning ball arranged on the calibration base,

the rotary manipulator is positioned in the centers of the calibration device, the circumference positioning device, the measuring device and the discharging grouping part and used for carrying the workpieces on the calibration device, the circumference positioning device, the measuring device and the discharging grouping part.

Preferably, the rotary manipulator includes servo motor, with servo motor passes through the rotatory main shaft that synchronous cog belt and synchronous pulley are connected, is used for fixing rotatory main shaft's main shaft base, be fixed in the mount of rotatory main shaft upper end, evenly distributed in four slide carriage bases on the mount, respectively through the pneumatic clamping jaw of upper and lower cylinder installation on the slide carriage base, calibration device, circumference positioner, measuring device, ejection of compact group part are separated by 90 and are distributed.

Preferably, base face recognition device include the frame, be fixed in sideslip cylinder in the frame and have the material loading platform of jacking piece, set up in material loading platform terminal dog and positive and negative detection sensor, be fixed in jacking cylinder under the frame and be connected with the jacking piece, install in sideslip slip table in the frame and be connected with sideslip cylinder, be fixed in lift cylinder on the sideslip slip table, install in on the sideslip slip table and with lift cylinder be connected lift slip table, install in last revolving cylinder of lift slip table, install in last clamping jaw cylinder of revolving cylinder, with the opening that clamping jaw cylinder is connected presss from both sides.

Preferably, the discharge grouping part comprises a frame, a discharge conveying belt connected with the discharge position, a code reader and a laser marking machine arranged at the discharge opening of the discharge conveying belt, a plurality of grouping storage roller ways vertically connected with the discharge conveying belt, and a plurality of discharge pushing cylinders arranged at the discharge conveying belt and respectively corresponding to each grouping storage roller way.

Preferably, the grouped storage roller ways comprise a plurality of qualified product roller ways and unqualified product roller ways, each unqualified product roller way is provided with a sealing cover, and each sealing cover is provided with a mechanical lock;

the grouped storage roller way is an unpowered roller shaft with a high front part and a low back part; and the side surface of the grouped storage roller way is provided with a correlation sensor.

Preferably, the feeding part comprises a frame body, a rectifying conveyor belt arranged on the frame body, a feeding conveyor belt vertically connected with the feeding table, a feeding pushing cylinder arranged at the tail end of the feeding conveyor belt and parallel to the feeding table, and a triangular baffle arranged on the upper surface of the rear end of the rectifying conveyor belt and used for blocking a workpiece from moving to one side of the feeding conveyor belt.

Preferably, the rectifying conveyor belt and the feeding conveyor belt are driven by a driving motor and a transmission chain, and the driving motor of the rectifying conveyor belt is a forward and reverse rotating motor;

the width limiting plate is used for adjusting the width of the feeding conveying belt, the height limiting block is arranged at the rear portion of the feeding conveying belt, and the tail end of the feeding conveying belt is provided with the tail end limiting block.

The invention provides a VL external star wheel automatic grouping instrument which comprises a detection part, a feeding part and a discharging grouping part, wherein the feeding part and the discharging grouping part are respectively connected with a feeding platform and a discharging position of the detection part, the detection part comprises a base surface identification device, a circumference positioning device and a measuring device which are arranged on a workbench,

the base surface recognition device is connected with the feeding part and used for judging whether the orientation of the base surface of the workpiece is correct or not, if so, the workpiece is continuously downwards circulated to the circumferential positioning device, and if not, the workpiece is overturned and then downwards circulated to the circumferential positioning device;

the circumferential positioning device is used for adjusting the position of the workpiece to the position which is the same as the detection position of the measuring device;

the measuring device is used for measuring the actual compression amount of the displacement sensor when the workpiece is detected, comparing the actual compression amount with the standard compression amount to obtain the PCD value of the workpiece, wherein the standard compression amount is obtained by measuring the compression amount of the displacement sensor when the standard sample piece is measured by the standard measuring instrument, and the PCD value of the standard sample piece is known.

Compared with the common external star wheel detection and grouping instrument, the VL external star wheel automatic grouping instrument provided by the invention measures the PCD value by using the displacement sensor, and performs grouping screening on workpieces according to the measurement result of the PCD value of the workpiece ball channel, so that the tolerance and grouping of the workpieces are automatically detected, the measurement error is smaller, the result is more precise, and the generation of the error is reduced; the degree of automation is higher, and work efficiency is higher, and is easy and simple to handle, and the degree of accuracy is less with operator's operation level, proficiency relation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a VL besides-star automatic grouping apparatus provided in an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the feed section;

FIG. 3 is a schematic view of the structure of the detecting part;

FIG. 4 is a schematic view of a base surface identification device;

FIG. 5 is a schematic view of a circumferential positioning device;

FIG. 6 is a schematic structural diagram of a measuring apparatus;

FIG. 7 is a schematic diagram of a floating measurement unit;

FIG. 8 is a schematic structural diagram of a positioning measurement unit;

fig. 9 is a schematic structural view of a rotary robot;

FIG. 10 is a schematic structural diagram of the calibration device;

fig. 11 is a schematic structural diagram of a discharge grouping part.

The drawings are numbered as follows:

the device comprises a detection part 1, a feeding part 2, a discharging grouping part 3, a base surface identification device 11, a circumference positioning device 12, a measuring device 13, a rotary manipulator 14, a calibration device 15, a feeding conveyer belt 21, a rectifying conveyer belt 22, a triangular baffle plate 23, a feeding push cylinder 24, a tail end limit block 25, a driving motor 26, a height limit block 27, a width limit plate 28, a blanking conveyer belt 31, a code reader 32, a laser marking machine 33, a blanking push cylinder 34, a mechanical lock 35, a defective product roller way 36, a defective product roller way 37, a transverse sliding table 111, a rotary cylinder 112, an opening clamp 113, a guide rod 114, a transverse moving cylinder 115, a feeding table 116, a jacking cylinder 117, a jacking block 118, a stop block 119, a positive and negative detection sensor 1110, a clamping jaw cylinder 1111, a lifting sliding table 1112, a lifting cylinder 1113, a stepping motor 121, a mandrel base 122, an axial positioning seat 123, the device comprises a positioning reference plate 131, a floating measurement unit 132, a positioning measurement unit 133, a guide block 134, a telescopic cylinder 1300, a displacement sensor 1301, a fixed block 1302, a linear bearing 1303, a guide shaft 1304, a measuring head 1305, a compression spring 1306, a sliding block 1307, a fixed seat 1308, a push rod 1309, a servo motor 141, a rotating main shaft 142, a pneumatic clamping jaw 143, an up-down air cylinder 144, a main shaft base 145, a calibration base 151 and a positioning ball 152.

Detailed Description

The core of the invention is to provide the VL external star wheel automatic grouping instrument which can intelligently realize automatic detection, laser marking, two-dimension code identification, grouping screening and accurate tracing on the VL external star wheel on line, solves the automatic grouping problem of the VL external star wheel, and has the advantages of high automation degree, small measurement error and accurate grouping.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 11, fig. 1 is a schematic structural diagram of a VL outer star wheel automatic grouping apparatus according to an embodiment of the present invention; FIG. 2 is a schematic view of the structure of the feed section; FIG. 3 is a schematic view of the structure of the detecting part; FIG. 4 is a schematic view of a base surface identification device; FIG. 5 is a schematic view of a circumferential positioning device; FIG. 6 is a schematic structural diagram of a measuring apparatus; FIG. 7 is a schematic diagram of a floating measurement unit; FIG. 8 is a schematic structural diagram of a positioning measurement unit; fig. 9 is a schematic structural view of a rotary robot; FIG. 10 is a schematic structural diagram of the calibration device; fig. 11 is a schematic structural diagram of a discharge grouping part.

In one embodiment, the invention provides a VL external star wheel automatic grouping instrument, which comprises a detection part 1, a feeding part 2 and a discharging grouping part 3 which are respectively connected with a feeding table 116 and a discharging position of the detection part 1, wherein the detection part 1 comprises a base surface identification device 11, a circumference positioning device 12 and a measuring device 13 which are arranged on a workbench,

the base surface recognition device 11 is connected with the feeding part 2 and used for judging whether the orientation of the base surface of the workpiece is correct or not, if so, the workpiece continues to flow downwards to the circumferential positioning device 12, and if not, the workpiece turns over and then flows downwards to the circumferential positioning device 12;

the circumferential positioning device 12 is used for adjusting the orientation of the workpiece to the same position as the detection orientation of the measuring device 13;

the measuring device 13 is configured to measure an actual compression amount of the displacement sensor 1301 when the workpiece is detected, and compare the actual compression amount with a standard compression amount to obtain a PCD value of the workpiece, where the standard compression amount is obtained by measuring the compression amount of the displacement sensor 1301 when the standard measuring instrument measures the standard sample piece, and the PCD value of the standard sample piece is known.

In the structure, the VL outer star wheel automatic grouping instrument comprises a detection part 1, a feeding part 2 and a discharging grouping part 3, wherein the feeding part 2 is connected with a feeding table 116 of the detection part 1, the discharging grouping part 3 is connected with a discharging position of the detection part 1, a workpiece is fed from the feeding part 2 and then enters the feeding table 116 of the detection part 1, the detection part 1 measures a PCD value of the workpiece, and then the workpiece enters the discharging grouping part 3 from the discharging position to finish discharging. Preferably, the delicate part of the detection part 1 is provided with protection means.

The detection part 1 comprises a base surface recognition device 11, a circumference positioning device 12 and a measuring device 13, and the base surface recognition device 11, the circumference positioning device 12 and the measuring device 13 are all arranged on a workbench.

It should be noted that, a circle of ring grooves are formed in the circumferential direction of the workpiece, one surface far away from the ring grooves is called a front surface, one surface close to the ring grooves is called a back surface, and in the process of measuring the PCD value of the workpiece, the front surface of the workpiece is required to be upward, namely, the ring grooves are arranged on one side close to the bottom surface.

The base surface recognition device 11 has a loading table 116, the loading table 116 is connected to the feeding section 2, and the workpiece is pushed from the feeding section 2 into the loading table 116. The base surface recognition device 11 is provided with a laser sensor, and can detect the position of the ring groove on the workpiece and transmit the position information to the controller, and the controller can judge whether the orientation of the base surface of the workpiece is correct. If it is correct, i.e. right side up, the workpiece continues to be turned downwards to the circumferential positioning device 12; if not, i.e. face down, the workpiece is turned 180, face down, face up, and then turned down to the circular positioner 12.

The base surface recognition device 11 can automatically recognize whether the base surface is correct or not, and then perform 180-degree turnover correction on the wrongly placed workpiece, so that the base surface of the workpiece is automatically recognized, the workpiece is correctly placed, the workpiece can be randomly placed at the feeding end, and the time cost is saved.

The circumference positioning device 12 is provided with a laser sensor, which can detect whether the lane orientation of the workpiece is the same as the orientation of the measuring head 1305 of the measuring device 13, and if not, adjust the orientation of the workpiece to the same position as the detection orientation of the measuring device 13, and position the circumference direction of the workpiece, so that the direction of the workpiece entering the detecting device is correct, and corresponds to the position of the measuring head 1305 of the station of the detecting device.

Specifically, the circumferential positioning device 12 includes a stepping motor 121, an axial positioning seat 123, a circumferential detection sensor 124,

the axial positioning seat 123 is connected with an output shaft of the stepping motor 121 through the mandrel base 122 and the positioning shaft, the circumference detection sensor 124 is arranged on the side surface of the axial positioning seat 123, and the split clamp 113 can reach the axial positioning seat 123. The circumferential positioning device 12 automatically corrects the angle error of the workpiece in the circumferential direction, automatically positions and detects the workpiece, and prepares for subsequent detection and positioning.

The measuring device 13 is provided with a displacement sensor 1301 and a probe 1305, and when detecting a workpiece, the spherical track of the workpiece is brought into contact with the probe 1305, and a fixed block 1302 of the probe 1305 compresses a measuring spring of the displacement sensor 1301, whereby the actual compression amount of the displacement sensor 1301 can be measured.

The VL external star wheel automatic grouping instrument adopts a comparison method for measurement, and the accuracy of the measuring device 13 is calibrated and checked through numerical value comparison. Therefore, the standard compression of the displacement sensor 1301 is calibrated when the standard sample is detected. When the standard compression amount is detected, the standard sample is sent to a measuring station of the measuring device 13, the compression amount of the displacement sensor 1301 when the standard sample is measured by the standard measuring instrument is recorded, and the compression amount of each displacement sensor 1301 is recorded and used for comparing and calculating the compression amount of the displacement sensor 1301 when the workpiece is measured.

It should be noted that the PCD values of the standards are known, i.e., the reference circle diameters of the three sets of ball tracks across the sphere pitch fitting circle. The simulated workpiece state of the standard sample piece needs to be the same as the simulated workpiece state of the measuring workpiece, and the number of lanes is the same, for example, a workpiece with 3 groups of lanes.

And when the actual compression amount and the standard compression amount are measured, comparing and calculating the actual compression amount and the standard compression amount to obtain the PCD value of the workpiece.

Compared with a common external star wheel detection and grouping instrument, the VL external star wheel automatic grouping instrument provided by the invention measures the PCD values by using the displacement sensor 1301, and performs grouping screening on workpieces according to the measurement result of the PCD values of the spherical channels of the workpieces, so that the tolerance and grouping of the workpieces are automatically detected, the measurement error is smaller, the result is more precise, and the generation of the error is reduced; the degree of automation is higher, and work efficiency is higher, and is easy and simple to handle, and the degree of accuracy is less with operator's operation level, proficiency relation.

In addition to the above-mentioned embodiments, the measuring device 13 includes a positioning reference plate 131, a plurality of sets of measuring units equally distributed around the circumference of the positioning reference plate 131, a guide block 134 having an opening and mounted on the upper end surface of the positioning reference plate 131,

the measuring unit comprises a fixed base 1308 fixed relative to the positioning reference plate 131, a telescopic cylinder 1300 fixed on the side surface of the fixed base 1308, a displacement sensor 1301 fixed on the upper end surface of the outer end of the fixed base 1308, two guide shafts 1304 fixed on the middle groove of the fixed base 1308, a sliding block 1307 and a compression spring 1306 sleeved on the guide shafts 1304, and a fixed block 1302 fixed on the upper end surface of the sliding block 1307, wherein the displacement sensor 1301 is connected with the outer end of the fixed block 1302 through a measuring spring, the telescopic cylinder 1300 is connected with the sliding block 1307 through a push rod 1309, the compression spring 1306 is positioned between the sliding block 1307 and the inner end of the fixed base 1308, and a measuring head 1305 capable of being matched with a workpiece ball path and extending out of an opening to.

In the above structure, the measuring device 13 includes the positioning reference plate 131, a plurality of sets of measuring units and the guide block 134, the plurality of sets of measuring units are equally distributed on the periphery of the positioning reference plate 131, the number of sets of measuring units is equal to the number of sets of ball tracks, for example, a workpiece having 3 sets of ball tracks is measured, and the number of measuring units is 3 sets. The guide block 134 is mounted on the upper end surface of the positioning reference plate 131, and the guide block 134 is in the shape of a hollow ball cage, and has openings on the side surface, and the number of the openings is equal to the number of the measurement units.

The measuring unit comprises a fixed seat 1308, a telescopic cylinder 1300, a displacement sensor 1301, a guide shaft 1304, a sliding block 1307, a compression spring 1306 and a fixed block 1302, wherein the fixed seat 1308 is equally fixed on the side surface of the positioning reference plate 131 and is relatively fixed with the positioning reference plate 131.

The fixed seat 1308 is concave, two guide shafts 1304 are fixed in a middle groove of the fixed seat 1308, the two guide shafts 1304 are arranged in parallel in a vertical plane, a sliding block 1307 and a compression spring 1306 are sleeved on the guide shafts 1304, the sliding block 1307 and the compression spring 1306 can move along the guide shafts 1304, and the guide shafts 1304 have supporting and guiding effects. The compression spring 1306 is located between the slide block 1307 and the inner end of the fixed seat 1308, namely, the slide block 1307 is located outwards, the compression spring 1306 is located inwards, and the compression spring 1306 is in a compressed state and generates an outward thrust for the slide block 1307.

The telescopic cylinder 1300 is fixed on the lateral side of the fixed seat 1308, the telescopic cylinder 1300 is connected with the sliding block 1307 through the push rod 1309, the telescopic cylinder 1300 can drive the fixed seat 1308 to move forwards along the guide shaft 1304, the telescopic cylinder 1300 retracts, the push rod 1309 is separated from the sliding block 1307, and the compression spring 1306 stretches to push the sliding block 1307 to move backwards, namely move outwards.

The fixed block 1302 is fixed to the upper end surface of the slider 1307 and moves in synchronization with the slider 1307. The inner end of the fixed block 1302 is provided with a measuring head 1305, and the measuring head 1305 is consistent with the size of a workpiece ball channel, can be matched with the workpiece ball channel and can be a steel ball. The measuring head 1305 can penetrate through the opening of the guide block 134, and when the extending opening is tangent to the workpiece ball path, the workpiece ball path is measured; when the workpiece is retracted into the ball cage of the guide block 134, the workpiece can be mounted on the positioning reference plate 131, so that the contact between the measuring head 1305 and the workpiece is avoided, and the workpiece is convenient to mount.

Preferably, the fixed block 1302 and the sliding block 1307 are detachably connected, for example, fastened by screws, so that the measuring head 1305 and the fixed block 1302 can be conveniently replaced, and the measurement can be performed by workpieces with different specifications.

The displacement sensor 1301 is fixed on the upper end face of the outer end of the fixed seat 1308, a measuring spring is arranged on the outer side of the displacement sensor 1301 and connected with the outer end of the fixed block 1302, and when the fixed block 1302 moves backwards along with the sliding block 1307, the fixed block 1302 compresses the measuring spring to obtain the compression value of the displacement sensor 1301.

The specific measurement process is as follows:

before a workpiece to be measured is placed, the telescopic cylinder 1300 drives the push rod 1309 to push the sliding block 1307 to move forwards along the guide shaft 1304, the compression spring 1306 continues to be compressed, and the measuring head 1305 retracts into the ball cage of the guide block 134.

When the measured workpiece is placed in a measuring station, the telescopic cylinders 1300 of one group of measuring units retract, the compression springs 1306 stretch to push the sliding blocks 1307 to move backwards slowly, and the measuring heads 1305 of the group of measuring units stop moving after being attached to the spherical channel of the workpiece, so that the positioning of the workpiece is completed.

In the process of attaching the measuring head 1305 to the workpiece ball path, the outer end of the fixed block 1302 contacts the displacement sensor 1301, and the fixed block 1302 compresses the measuring spring.

After the positioning of the workpiece is completed, the telescopic cylinders 1300 of the other measuring units are retracted simultaneously, and the measuring head 1305 is attached to the spherical channel of the workpiece. And acquiring the compression values of all the displacement sensors 1301, and comparing the compression values with the standard compression of the standard sample to obtain the actual PCD measurement value of the workpiece.

According to the measuring mode, the measuring error is small, the measuring resolution reaches 0.001mm, the measuring precision is less than or equal to +/-0.001, and the detection beat is not more than 20s in the operation of the whole device, so that the result is more precise, and the error is reduced; the automation degree is higher, the working efficiency is higher, the operation is simple and convenient, and the relation between the accuracy and the operation level and the proficiency of an operator is smaller; if the product replacement measuring mechanism is used, the product can be quickly replaced, adjusted and accurately positioned; and a limiting device, an anti-collision device and a buffering device are additionally arranged on a movable part of the measuring device 13, so that impact damage is reduced.

Preferably, the upper end surface of the positioning reference plate 131 may be provided with a plurality of positioning blocks, and the plurality of positioning blocks have the same height, so as to perform preliminary positioning on the workpiece placement.

The upper end face of the positioning reference plate 131 can be provided with a proximity switch, and the proximity switch can sense whether a workpiece is placed in place.

Further optimizing the above technical solution, the measuring unit includes a pair of positioning measuring units 133 and a plurality of pairs of floating measuring units 132, and the connection modes of the positioning measuring units 133 and the floating measuring units 132 are mostly the same.

Linear bearings 1303 are arranged between the two guide shafts 1304 of the positioning and measuring unit 133 and the holes of the sliding block 1307, the measuring head 1305 and the sliding block 1307 cannot swing, the measuring head 1305 is accurately attached to a spherical channel of a workpiece, and the workpiece is automatically positioned.

A linear bearing 1303 is arranged between one guide shaft 1304 and a hole of the sliding block 1307 of the floating measurement unit 132, a gap is reserved between the other guide shaft 1304 and the hole of the sliding block 1307, specifically, a linear bearing 1303 is arranged between the upper guide shaft 1304 and the hole of the sliding block 1307, and a gap of 1mm is reserved between the lower guide shaft 1304 and the hole of the sliding block 1307, so that the measuring head 1305 can have a certain swing amplitude along the axis of the upper guide shaft 1304, and because the measuring head 1305 has a swing amplitude along the axis of the guide shaft 1304, the angle machining error of a workpiece ball track can be eliminated, the angle error of the workpiece can be automatically corrected and compensated, and the measuring head 1305 is completely attached to the workpiece.

In another more reliable embodiment, on the basis of any one of the above embodiments, the calibration device 15 is further included, the calibration device 15 includes a calibration base 151 and a positioning ball 152, the standard sample is stored on the calibration base 151, the storage position of the standard sample is fixed, the standard sample is searched everywhere, the taking and the placing are more convenient, and the time is saved. When the VL external star wheel automatic grouping instrument executes a calibration program, the standard sample piece is sent to a measuring station of the detection device and used for recording the compression amount of each displacement sensor 1301 and comparing and calculating the compression amount of the displacement sensors 1301 when the workpieces are measured.

The calibration base 151 is provided with positioning balls 152, for example, 2 positioning balls 152 are fixed on the calibration base 151, and the positioning balls 152 are attached to the lane of the standard sample piece for positioning the direction of the standard sample piece, so as to quickly and accurately correspond to the position of the measuring head 1305 of the station of the detection device.

The technical scheme is further optimized, the automatic workpiece conveying device further comprises a rotary manipulator 14, the rotary manipulator 14 is located at the center of the calibration device 15, the circumference positioning device 12, the measuring device 13 and the discharging grouping part 3 and used for conveying the workpieces and the standard samples on the calibration device 15, the circumference positioning device 12, the measuring device 13 and the discharging grouping part 3 to complete conveying of the workpieces and the standard samples among the blanking positions of the calibration device 15, the circumference positioning device 12, the measuring device 13 and the discharging grouping part 3, conveying of the workpieces is convenient and labor-saving, and automatic conveying of the workpieces and the standard samples is achieved.

The rotary manipulator 14 includes a servo motor 141, a rotary spindle 142, a spindle base 145, a fixing frame, a slide table base, and a pneumatic gripper 143, the rotary spindle 142 and the servo motor 141 are connected by a timing belt and a timing pulley, and the servo motor 141 drives the rotary spindle 142 to rotate. The servo motor 141 has a spindle base 145 on a side thereof, the spindle base 145 has a mounting hole, the rotary spindle 142 is mounted in the mounting hole of the spindle base 145, and the spindle base 145 is used to fix the rotary spindle 142.

A fixing frame is fixed at the upper end of the rotating main shaft 142, and a plurality of supports are arranged on the fixing frame, and preferably, the plurality of supports are uniformly distributed. The plurality of slide pedestal are respectively fixed on the plurality of brackets of the fixed mount, the pneumatic clamping jaw 143 is installed on the slide pedestal, the pneumatic clamping jaw 143 is connected with the upper and lower air cylinder 144, and the pneumatic clamping jaw 143 can move up and down along the slide pedestal under the drive of the upper and lower air cylinder 144.

Preferably, the number of the supports, the sliding table bases and the pneumatic clamping jaws 143 is 4, the calibration device 15, the circumferential positioning device 12, the measuring device 13 and the discharging grouping part 3 are distributed at intervals of 90 degrees, and the servo motor 141 can convey the workpiece to the next station every time the servo motor rotates 90 degrees, so that the assembly line operation is realized.

The specific working process is as follows: the upper and lower air cylinders 144 descend, after the pneumatic clamping jaws 143 clamp the workpiece, the upper and lower air cylinders 144 ascend, the pneumatic clamping jaws 143 clamp the workpiece and ascend, and then the servo motor 141 drives the synchronous belt to work to drive the rotary main shaft 142 to rotate by 90 degrees. The upper and lower air cylinders 144 descend, the pneumatic clamping jaws 143 are released, and the workpiece falls to the station. The process is repeatedly executed, and the workpieces are conveyed among the stations.

The invention provides a VL external star wheel automatic grouping instrument, under the condition that other components are not changed, a base surface identification device 11 comprises a rack, a transverse moving cylinder 115 fixed on the rack, a feeding table 116 with a jacking block 118, a stop block 119 and a positive and negative detection sensor 1110 arranged at the tail end of the feeding table 116, a jacking cylinder 117 fixed below the rack and connected with the jacking block 118, a transverse moving sliding table 111 installed on the rack and connected with the transverse moving cylinder 115, a lifting cylinder 1113 fixed on the transverse moving sliding table 111, a lifting sliding table 1112 installed on the transverse moving sliding table 111 and connected with the lifting cylinder 1113, a rotating cylinder 112 installed on the lifting sliding table 1112, a clamping jaw cylinder 1111 installed on the rotating cylinder 112, and an opening clamp 113 connected with the clamping jaw cylinder 1111.

In the above structure, the base surface recognition device 11 includes a frame, a feeding table 116, a stopper 119, a forward/reverse detection sensor 1110, a lift cylinder 117, a lateral sliding table 111, a lift cylinder 1113, a lift sliding table 1112, a rotary cylinder 112, a clamping jaw cylinder 1111, and a clamp 113.

The feeding table 116 is fixed on the frame, the rear end of the feeding table 116 is provided with a jacking block 118, and the workpiece stays on the jacking block 118. Jacking cylinder 117 is fixed in under the frame, and jacking cylinder 117 is connected with jacking piece 118, and jacking cylinder 117 can drive jacking piece 118 and reciprocate.

The end of the feeding table 116 is provided with a stop 119, preferably, the stop 119 is a V-shaped block, and the rear end surface of the workpiece is abutted against the stop 119 to have a limiting effect.

The end position of the feeding table 116 is provided with a positive and negative detection sensor 1110 for detecting the position of the workpiece ring groove, so as to judge the positive and negative of the base surface of the workpiece, and the detection is more accurate and reliable.

The transverse moving cylinder 115 is fixed on the rack, the transverse moving sliding table 111 is installed on the rack, the transverse moving sliding table 111 is connected with the transverse moving cylinder 115, and the transverse moving cylinder 115 can drive the transverse moving sliding table 111 to move transversely. The circumferential positioning device 12 is located on the base recognition device 11, by means of which the workpiece can be transferred in translation from the base recognition device 11 to the circumferential positioning device 12.

The lifting cylinder 1113 is fixed on the transverse sliding table 111, the lifting sliding table 1112 is installed on the transverse sliding table 111, the rotary cylinder 112 is installed on the lifting sliding table 1112, the clamping jaw cylinder 1111 is installed on the rotary cylinder 112, the opening clamp 113 is connected with the clamping jaw cylinder 1111, the opening clamp 113 can clamp a workpiece through the clamping jaw cylinder 1111, and the workpiece can be turned over through the rotary cylinder 112.

The lifting slide table 1112 is connected to a lifting cylinder 1113, and the lifting cylinder 1113 can drive the lifting slide table 1112 to ascend and descend on the transverse slide table 111, so as to lift the workpiece to the height of the circumferential positioning device 12, so as to smoothly transversely move the workpiece to the circumferential positioning device 12.

Preferably, the upper end and the lower end of the open clamp 113 are provided with supporting plates, and when the open clamp 113 clamps the workpiece, the workpiece is pressed on the supporting plates to prevent the workpiece from falling off from the open clamp 113.

The specific working process is as follows: the workpiece is pushed to the end stop block 119 along the feeding table 116 by the feeding pushing cylinder 24 of the feeding part 2, the positive and negative detection sensor 1110 detects the direction of the workpiece, then the jacking cylinder 117 is connected with the jacking block 118 to jack the workpiece to the position of the opening clamp 113, the clamping jaw cylinder 1111 drives the opening clamp 113 to clamp the workpiece, and the lifting cylinder 1113 drives the lifting sliding table 1112 to lift. If the direction of the base surface of the workpiece is correct, the transverse moving cylinder 115 drives the transverse moving sliding table 111 to convey the workpiece to a lower station, and then the opening clamp 113 is released and returned; if the direction of the base surface of the workpiece is wrong, the rotary cylinder 112 drives the workpiece to rotate 180 degrees and then carries the workpiece to a lower station, and automatic identification and turnover are achieved for the base surface of the workpiece.

Preferably, the fixing table of the feeding table 116 has a step thereon to prevent the workpiece from slipping.

Furthermore, guide rods 114 are arranged on two sides of the rack, the axial directions of the guide rods 114 and the transverse moving cylinder 115 are the same, guide holes of the transverse moving sliding table 111 are sleeved on the guide rods 114, and the transverse moving sliding table 111 moves along the guide rods 114 to prevent the transverse moving sliding table 111 from deviating.

The VL besides-star wheel automatic grouping device provided by the invention should not be limited to such a situation, and under the condition that other components are not changed, the discharging grouping part 3 comprises a frame, a discharging conveyer belt 31 connected with a discharging position, a code reader 32 and a laser marking machine 33 which are arranged at a discharging opening of the discharging conveyer belt 31, a plurality of grouping storage roller ways which are vertically connected with the discharging conveyer belt 31, and a plurality of discharging pushing cylinders 34 which are arranged at the discharging conveyer belt 31 and respectively correspond to each grouping storage roller way.

In the structure, the discharging grouping part 3 comprises a frame, a discharging conveying belt 31, a code reader 32, a laser marking machine 33, a grouping storage roller way and a discharging pushing cylinder 34.

The blanking conveyer belt 31 is connected with the blanking position of the measuring device 13, a plurality of grouped storage roller ways are vertically connected with the blanking conveyer belt 31, a plurality of blanking push air cylinders 34 are arranged at the blanking conveyer belt 31, and workpieces with different specifications are placed on each grouped storage roller way. The plurality of blanking pushing cylinders 34 correspond to each grouping storage roller way respectively, the actual PCD measured value of the workpiece is compared with the preset grouping range value to store the workpiece in groups, and the blanking pushing cylinders 34 push different workpieces to different grouping storage roller ways from the blanking conveyer belt 31.

A code reader 32 and a laser marking machine 33 are arranged at the blanking port of the blanking conveying belt 31, the laser marking machine 33 marks the content of the two-dimensional code according to the requirement, the code reader 32 reads the marked two-dimensional code after the marking is finished, and the two-dimensional code data and the PCD measured value are bound and stored. Automatic laser marking is helpful for automatic tracing of the workpiece.

Specifically, after the workpiece is detected, the workpiece is placed at a discharging position by the rotary manipulator 14, the laser marker 33 marks the content of the two-dimensional code according to the requirement, the two-dimensional code is read by the code reader 32 after the marking is finished, the drive motor 26 drives the blanking conveyer belt 31 through the transmission chain to enable the workpiece to move backwards after the reading is finished, the workpiece is pushed to a grouping storage roller way by the corresponding blanking push cylinder 34 when the workpiece moves to a corresponding position according to the corresponding group of the workpiece detection result, the workpiece is moved to the tail end and is finally taken out manually, the result is more precise through automatic detection and grouping, and the generation of errors is avoided.

Further optimizing the technical scheme, the grouped storage roller ways comprise a plurality of qualified product roller ways 37 and unqualified product roller ways 36, and unqualified products are pushed into an unqualified product area by the blanking pushing cylinder 34. And a sealing cover is arranged on the unqualified product roller way 36, and a mechanical lock 35 is arranged on the sealing cover to prevent the workpiece from being taken away by misoperation.

The grouped storage roller ways are unpowered roller shafts with high front parts and low rear parts, the unpowered roller shafts move the workpieces to the tail ends of the grouped storage roller ways by means of gravity, the structure is simple, and energy is saved.

The side of the grouped storage roller way is provided with the correlation sensor, and when any one of the grouped storage roller way is filled with the workpieces, the correlation sensor sends a filling signal so that the workers can take the workpieces away in time to ensure normal work.

For the VL besides-star wheel automatic grouping instrument in each of the above embodiments, the feeding portion 2 includes a frame body, a rectifying conveyor belt 22 disposed on the frame body, a feeding conveyor belt 21 perpendicularly connected to the feeding table 116, a feeding pushing cylinder 24 disposed at the end of the feeding conveyor belt 21 and parallel to the feeding table 116, and a triangular baffle 23 disposed above the rear end of the rectifying conveyor belt 22 for blocking the workpiece from moving to one side of the feeding conveyor belt 21.

In the above structure, the feeding part 2 comprises a frame body, a rectifying conveyor belt 22, a feeding conveyor belt 21, a feeding pushing cylinder 24 and a triangular baffle plate 23.

The rectifying conveyor belt 22 and the feeding conveyor belt 21 are arranged on the frame body, a triangular baffle 23 is arranged on the upper surface of the rear end of the rectifying conveyor belt 22 and used for blocking a workpiece from moving to one side of the feeding conveyor belt 21, the scattered workpiece is manually placed on the rectifying device, the rectifying conveyor belt 22 drives the workpiece to move, the workpiece reaches the triangular baffle 23 at the front end, the triangular baffle 23 blocks the workpiece to move rightwards and move to the feeding conveyor belt 21, and the scattered workpiece is rectified.

The feeding conveyer belt 21 moves forward to drive the workpiece to the tail end, the feeding conveyer belt 21 is perpendicularly connected with the feeding platform 116, the tail end of the feeding conveyer belt 21 is provided with a feeding pushing cylinder 24, the feeding pushing cylinder 24 is parallel to the feeding platform 116, and the feeding pushing cylinder 24 pushes the workpiece to the feeding platform 116 from the feeding conveyer belt 21 to realize feeding.

Further optimize above-mentioned technical scheme, rectification conveyer belt 22 and material loading conveyer belt 21 pass through driving motor 26 and drive chain drive, simple structure, easily control.

The driving motor 26 of the rectifying and conveying belt 22 is a forward and backward rotation motor, when the feeding conveying belt 21 has a workpiece at the feeding position, the rectifying and conveying belt 22 can rotate reversely to avoid the workpiece of the feeding conveying belt 21, and the feeding workpiece of the feeding conveying belt 21 and the workpiece of the rectifying and conveying belt 22 are prevented from colliding and stacking.

The outside of material loading conveyer belt 21 is provided with width limiting plate 28 for adjust material loading conveyer belt 21's width, the product of different diameter specifications can be adapted to in adjustment width limiting plate 28 position. It should be noted that the width of the feeding conveyor belt 21 should be larger than the size of one workpiece and smaller than the size of two workpieces, so as to prevent the workpieces of the feeding conveyor belt 21 from being stacked in the width direction.

The rear portion of the feeding conveyor belt 21 is provided with a height limit block 27 that prevents the workpieces from being stacked in the height direction.

The end of the feeding conveyor belt 21 is provided with an end limiting block 25 to prevent the workpiece from falling off the feeding conveyor belt 21.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The VL besides-star wheel automatic grouping instrument provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.