阅读说明：本技术 一种气缸盖内径自动化检测系统 (Automatic detection system for inner diameter of cylinder cover ) 是由 王远海 王彬 钟结林 于 2020-06-30 设计创作，主要内容包括：本发明提供了一种气缸盖内径自动化检测系统,包括测量平台、测量装置、驱动装置、定位夹具和关节机器人；定位夹具固定在测量平台上,用于定位放置在其上的待测气缸盖；测量装置位于在定位夹具的一侧,且可拆卸安装在驱动装置上,用于测量待测气缸盖的内孔的尺寸；驱动装置安装在测量平台上,用于驱动测量装置在测量平台上移动；关节机器人设置在测量平台一侧,关节机器人的末端设有工件夹具,关节机器人通过工件夹具夹取待测气缸盖,并实现待测气缸盖的移动。本发明适应自动化生产线的设计需求,无需人工作业,提高测量结果的准确性,降低检测成本。(The invention provides an automatic detection system for the inner diameter of a cylinder cover, which comprises a measuring platform, a measuring device, a driving device, a positioning clamp and a joint robot, wherein the measuring platform is arranged on the measuring platform; the positioning fixture is fixed on the measuring platform and used for positioning the cylinder cover to be measured placed on the positioning fixture; the measuring device is positioned on one side of the positioning fixture, is detachably arranged on the driving device and is used for measuring the size of the inner hole of the cylinder cover to be measured; the driving device is arranged on the measuring platform and used for driving the measuring device to move on the measuring platform; the joint robot is arranged on one side of the measuring platform, a workpiece clamp is arranged at the tail end of the joint robot, the joint robot clamps the cylinder cover to be measured through the workpiece clamp, and the movement of the cylinder cover to be measured is achieved. The invention meets the design requirements of an automatic production line, does not need manual operation, improves the accuracy of the measurement result and reduces the detection cost.)

1. An automatic detection system for the inner diameter of a cylinder cover is characterized by comprising a measuring platform, a measuring device, a driving device, a positioning clamp and a joint robot;

the positioning fixture is fixed on the measuring platform and used for positioning the cylinder cover to be measured placed on the positioning fixture;

the measuring device is positioned on one side of the positioning fixture, is detachably mounted on the driving device and is used for measuring the size of the inner hole of the cylinder cover to be measured;

the driving device is arranged on the measuring platform and used for driving the measuring device to move on the measuring platform;

the joint robot is arranged on one side of the measuring platform, a workpiece clamp is arranged at the tail end of the joint robot, the joint robot clamps the cylinder cover to be measured through the workpiece clamp, and the movement of the cylinder cover to be measured is achieved.

2. The automatic detection system for the inner diameter of the cylinder cover according to claim 1, wherein the measuring device comprises a pneumatic measuring head, a controller, a communication module and a touch screen, and a first end of the pneumatic measuring head is detachably mounted on the driving device;

the pneumatic measuring head is provided with eight air outlet holes and four air inlet holes, wherein the eight air outlet holes form four groups of air outlet hole groups by using two air outlet holes as a group, and the two air outlet holes of each group of air outlet hole groups are symmetrically arranged on two sides of the same longitudinal section of the pneumatic measuring head; the pneumatic measuring head comprises four groups of air outlet holes, wherein two groups of air outlet holes are arranged in the middle of the pneumatic measuring head, and the other two groups of air outlet holes are arranged at the second end of the pneumatic measuring head;

the four air inlets are arranged at the position close to the first end of the pneumatic measuring head and are uniformly arranged on the same cross section of the pneumatic measuring head, the four air inlets correspond to four air outlet hole groups one by one, and any one air inlet is communicated with two air outlet holes of the corresponding air outlet hole group through an air passage;

any air inlet is connected with an air source through an air-electric converter;

the controller is connected with the gas-electric converter through the communication module;

the controller is respectively connected with the driving device, the touch screen and the joint robot.

3. The automatic detection system for the inner diameter of the cylinder head according to claim 2, wherein two of the four air inlets form two sets of air inlet hole groups, wherein two air inlets of one set of air inlet hole group correspond to two sets of air outlet hole groups arranged in the middle of the pneumatic measuring head one by one, two air inlets of the other set of air inlet hole group correspond to two sets of air outlet hole groups arranged at the second end of the pneumatic measuring head one by one, any one of the air inlets and two air outlet holes of the corresponding air outlet hole group are arranged on the same longitudinal section of the pneumatic measuring head, and the openings of the two air inlets of the same set of air inlet hole groups face to be perpendicular to each other.

4. The automatic detection system for the inner diameter of the cylinder cover according to claim 2, wherein the driving device comprises a mounting plate, a measuring fixture, a linear driving module and an auxiliary slide rail, one end of the mounting plate is in driving connection with the linear driving module, the other end of the mounting plate is in sliding connection with the auxiliary slide rail, the measuring fixture is arranged on the mounting plate and is detachably connected with the pneumatic measuring head, and the linear driving module and the auxiliary slide rail are both arranged on the measuring platform and are parallel to each other.

5. The automatic detection system for the inner diameter of the cylinder cover according to claim 4, wherein a through hole is formed in the first end of the pneumatic measuring head, the measuring clamp comprises a supporting plate, a sliding rod assembly and a fixing bolt, an insertion hole into which the first end of the pneumatic measuring head is inserted is formed in one end of the sliding rod assembly, the other end of the sliding rod assembly is arranged on the supporting plate, a threaded hole corresponding to the through hole is formed in the side wall of the insertion hole, and the first end of the pneumatic measuring head is inserted into the insertion hole of the sliding rod assembly and is fixed by the fixing bolt in the threaded hole and the through hole.

6. The automatic detection system for the inner diameter of the cylinder cover according to claim 5, further comprising a warning device for giving a warning, wherein the sliding rod assembly comprises a fixed rod, a movable rod, a sensor and a first elastic member, the fixed rod is arranged on the support plate in a penetrating manner, a containing cavity is formed in the fixed rod and penetrates through two ends of the fixed rod, the insertion hole is formed in one end of the movable rod, the other end of the movable rod penetrates through the containing cavity of the fixed rod and then is connected with the sensor, a sensing head matched with the sensor is arranged on the support plate, the first elastic member is sleeved on the outer side of the movable rod, one end of the first elastic member is abutted against the movable rod, the other end of the first elastic member is abutted against the fixed rod, and the controller is respectively connected.

7. The automatic detection system for the inner diameter of the cylinder cover according to claim 1, wherein the positioning fixture is a zero positioning system and comprises a mother board and a daughter board matched with the mother board, the mother board is mounted on the measuring platform, first positioning pins in one-to-one correspondence with a plurality of positioning holes of the cylinder cover to be measured are arranged on one side surface of the daughter board, which is far away from the mother board, and the first positioning pins are in clearance fit with the corresponding positioning holes.

8. The automatic detection system for the inner diameter of the cylinder cover according to claim 1, wherein an auxiliary pressing component is further arranged at the tail end of the joint robot, the auxiliary pressing component comprises a fixed plate, a movable plate and a second elastic member, the fixed plate is fixed at the tail end of the joint robot, fixing columns are arranged at two ends of the fixed plate, limiting members are connected to lower ends of the fixing columns after penetrating through a sliding plate, the movable plate can move up and down along the fixing columns, a plurality of pressing members are detachably mounted on the movable plate, and the second elastic member is arranged between the fixed plate and the movable plate.

9. The automatic detection system for the inner diameter of the cylinder head according to claim 1, further comprising a calibration ring gauge which is positioned on one side of the positioning fixture far away from the measuring device and fixed on the measuring platform.

10. The automatic detection system for the inner diameter of the cylinder cover according to claim 1, further comprising a transition platform, wherein the transition platform is arranged at one end of the measurement platform and used for placing the cylinder cover to be detected.

Technical Field

The invention belongs to the technical field of detection equipment, and particularly relates to an automatic detection system for the inner diameter of a cylinder cover.

Background

The cylinder head of the motorcycle engine usually needs to be subjected to fine boring processing, and the processing condition needs to be detected and recorded after the processing. The traditional processing is that the cylinder cover is subjected to fine boring processing firstly, then an operator takes out the cylinder cover manually, the pneumatic measuring head is held by a hand to measure and record the processed cylinder cover, the state of the cutter is judged according to the detected condition, the cutter is replaced in time, poor output is reduced, and due to the skills and habits of different personnel, the processing and detection operation efficiency is very low, and the deviation of the measured result is large.

With the investment of automation technology, an automatic production line is built, quality monitoring from feeding and discharging operation of a machine tool, connection among processes and key processing processes is achieved through an H-shaped truss manipulator or a joint robot, and unmanned operation of all the processes is achieved. On one hand, however, the traditional detection means and operation mode for the finish boring of the engine cylinder cover are completed by manual operation, and cannot meet the design requirements of an automatic production line; on the other hand, pneumatic measurement has high requirements on operators, different operator techniques and habits and different measurement positions have great influence on measurement results, the manual operation efficiency is low, and the labor intensity is increased.

Disclosure of Invention

The invention aims to provide an automatic detection system for the inner diameter of a cylinder cover, which is suitable for the design requirement of an automatic production line, does not need manual operation, improves the accuracy of a measurement result and reduces the detection cost.

The invention is realized by the following technical scheme:

an automatic detection system for the inner diameter of a cylinder cover comprises a measuring platform, a measuring device, a driving device, a positioning clamp and a joint robot;

the positioning fixture is fixed on the measuring platform and used for positioning the cylinder cover to be measured placed on the positioning fixture;

the measuring device is positioned on one side of the positioning fixture, is detachably arranged on the driving device and is used for measuring the size of the inner hole of the cylinder cover to be measured;

the driving device is arranged on the measuring platform and used for driving the measuring device to move on the measuring platform;

the joint robot is arranged on one side of the measuring platform, a workpiece clamp is arranged at the tail end of the joint robot, the joint robot clamps the cylinder cover to be measured through the workpiece clamp, and the movement of the cylinder cover to be measured is achieved.

Furthermore, the measuring device comprises a pneumatic measuring head, a controller, a communication module and a touch screen, wherein the first end of the pneumatic measuring head is detachably arranged on the driving device;

the pneumatic measuring head is provided with eight air outlet holes and four air inlet holes, wherein the eight air outlet holes form four groups of air outlet hole groups by taking two air outlet holes as a group, and the two air outlet holes of each group of air outlet hole groups are symmetrically arranged on two sides of the same longitudinal section of the pneumatic measuring head; the pneumatic measuring head comprises four groups of air outlet holes, wherein two groups of air outlet holes are arranged in the middle of the pneumatic measuring head, and the other two groups of air outlet holes are arranged at the second end of the pneumatic measuring head;

the four air inlets are arranged at the position close to the first end of the pneumatic measuring head and are uniformly distributed on the same cross section of the pneumatic measuring head, the four air inlets correspond to the four air outlet hole groups one by one, and any one air inlet is communicated with two air outlets of the corresponding air outlet hole group through an air passage;

any air inlet is connected with an air source through an air-electric converter;

the controller is connected with the gas-electric converter through the communication module;

the controller is respectively connected with the driving device, the touch screen and the joint robot.

Furthermore, two of the four air inlets form two groups of air inlet hole groups as a group, wherein two air inlets of one group of air inlet hole groups correspond to two groups of air outlet hole groups arranged in the middle of the pneumatic measuring head one by one, two air inlets of the other group of air inlet hole groups correspond to two groups of air outlet hole groups arranged at the second end of the pneumatic measuring head one by one, any air inlet hole and two air outlet holes of the corresponding air outlet hole group are arranged on the same longitudinal section of the pneumatic measuring head, and the opening directions of the two air inlets of the same group of air inlet hole groups are perpendicular to each other.

Further, drive arrangement includes mounting panel, measurement anchor clamps, linear drive module and supplementary slide rail, and mounting panel one end is connected with the drive of linear drive module, and the other end and supplementary slide rail sliding connection, measurement anchor clamps set up on the mounting panel, and can dismantle with the pneumatic measuring head and be connected, and linear drive module and supplementary slide rail all set up on measuring platform, and are parallel to each other.

Furthermore, the first end of the pneumatic measuring head is provided with a through hole, the measuring clamp comprises a supporting plate, a sliding rod assembly and a fixing bolt, one end of the sliding rod assembly is provided with an inserting hole for inserting the first end of the pneumatic measuring head, the other end of the sliding rod assembly is arranged on the supporting plate, a threaded hole corresponding to the through hole is formed in the side wall of the inserting hole, the first end of the pneumatic measuring head is inserted into the inserting hole of the sliding rod assembly, and the first end of the pneumatic measuring head is fixed in the threaded hole and the through.

Further, still including the warning device who is used for sending the warning, the slide bar subassembly includes the dead lever, the movable rod, sensor and first elastic component, the dead lever runs through the setting in the backup pad, and its inside holds the chamber that runs through both ends that is equipped with, the patchhole sets up the one end at the movable rod, the other end of movable rod is connected with the sensor after passing from the chamber that holds of dead lever, be equipped with in the backup pad with sensor complex inductive head, first elastic component cover is established in the outside of movable rod, its one end and movable rod butt, its other end and dead lever butt, the controller is connected with sensor and suggestion device respectively.

Furthermore, the positioning fixture is a zero point positioning system and comprises a mother board and a daughter board matched with the mother board, the mother board is installed on the measuring platform, first positioning pins in one-to-one correspondence with a plurality of positioning holes of the cylinder cover to be measured are arranged on one side surface of the daughter board, which is far away from the mother board, and the first positioning pins are in clearance fit with the corresponding positioning holes.

Further, the end of the joint robot is also provided with an auxiliary pressing component, the auxiliary pressing component comprises a fixed plate, a movable plate and a second elastic piece, the fixed plate is fixed at the end of the joint robot, fixing columns are arranged at two ends of the fixed plate, a limiting part is connected to the lower end of each fixing column after penetrating through the sliding plate, the movable plate can move up and down along the fixing columns, a plurality of pressing pieces are detachably mounted on the movable plate, and the second elastic piece is arranged between the fixed plate and the movable plate.

Further, still include calibration ring gauge, calibration ring gauge is located the positioning fixture and keeps away from measuring device's one side and fixes on measuring platform.

Further, still include transition platform, transition platform sets up the one end at measuring platform for put the cylinder head that awaits measuring.

Compared with the prior art, the invention has the beneficial effects that: design according to automation line, adapt to automation line's design demand, press from both sides the cylinder head that awaits measuring through joint robot to place the cylinder head that awaits measuring and fix a position on positioning fixture, drive arrangement drive measuring device removes to the cylinder head that awaits measuring in, measure the size of the hole of the cylinder head that awaits measuring, whole process need not manual work, and degree of automation is high, and detection efficiency is high, saves test time, can avoid manual operation unstability simultaneously, avoids because manual manipulation and custom bring the uncertainty of test result, thereby improves the accuracy of measuring result, reduces detection cost.

Drawings

FIG. 1 is a schematic structural diagram of an automatic detection system for the inner diameter of a cylinder head according to the present invention;

FIG. 2 is another schematic structural diagram of the automatic detection system for the inner diameter of the cylinder head according to the present invention (joint robot not shown);

FIG. 3 is a schematic connection diagram of a measuring device in the automatic detection system for the inner diameter of the cylinder head according to the present invention;

FIG. 4 is a schematic structural diagram of a pneumatic measuring head in the automatic detection system for the inner diameter of the cylinder head according to the present invention;

FIG. 5 is a cross-sectional view of a pneumatic measuring head and a measuring fixture in the automatic detection system for the inner diameter of a cylinder head according to the present invention;

FIG. 6 is an enlarged schematic view of area A of FIG. 2 of the automatic cylinder head inside diameter detection system of the present invention;

FIG. 7 is a schematic structural diagram of the end of a joint robot in the automatic detection system for the inner diameter of the cylinder head according to the present invention.

In the figure, 1-a measuring platform, 2-a measuring device, 21-a pneumatic measuring head, 211-an air outlet, 212-an air inlet, 213-an air channel, 214-a through hole, 22-a gas-electric converter, 23-an air source, 3-a driving device, 31-a mounting plate, 32-a measuring clamp, 321-a supporting plate, 3211-a sensing head, 322-a fixing bolt, 323-a fixing rod, 324-a movable rod, 325-a sensor, 326-a first elastic piece, 327-a threaded hole, 33-a linear driving module, 34-an auxiliary sliding rail, 4-a positioning clamp, 41-a mother plate, 42-a daughter plate, 421-a first positioning pin, 5-an articulated robot, 51-a workpiece clamp, 52-a fixing plate and 53-a movable plate, 54-a second elastic part, 55-a fixed column, 56-a pressing part, 57-a limiting part, 6-a calibration ring gauge, 7-a transition platform and 8-a cylinder cover to be tested.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an automatic detection system for the inner diameter of a cylinder head according to the present invention; an automatic detection system for the inner diameter of a cylinder cover comprises a measuring platform 1, a measuring device 2, a driving device 3, a positioning clamp 4 and a joint robot 5; the positioning clamp 4 is fixed on the measuring platform 1 and used for positioning the cylinder cover 8 to be measured placed on the positioning clamp; the measuring device 2 is positioned at one side of the positioning clamp 4, is detachably arranged on the driving device 3 and is used for measuring the size of an inner hole of the cylinder cover 8 to be measured; the driving device 3 is arranged on the measuring platform 1 and used for driving the measuring device 2 to move on the measuring platform 1; the joint robot 5 is arranged on one side of the measuring platform 1, a workpiece clamp 51 is arranged at the tail end of the joint robot 5, the joint robot 5 clamps the cylinder cover 8 to be measured through the workpiece clamp 51, and the movement of the cylinder cover 8 to be measured is achieved. The joint robot 5 clamps the cylinder cover 8 to be detected onto the positioning clamp 4 through the workpiece clamp 51, the driving device 3 drives the measuring device 2 to be inserted into the two-pole inner hole of the cylinder cover 8 to be detected, the size of the inner hole of the cylinder cover 8 to be detected is detected, and after the detection is finished, the joint robot 5 clamps the detected cylinder cover 8 to be detected into the next procedure through the workpiece clamp 51.

Referring to fig. 2 to 5, fig. 2 is another schematic structural diagram (not shown with a joint robot) of the automatic cylinder head inner diameter detection system of the present invention, fig. 3 is a schematic connection diagram of a measuring device in the automatic cylinder head inner diameter detection system of the present invention, fig. 4 is a schematic structural diagram of a pneumatic measuring head in the automatic cylinder head inner diameter detection system of the present invention, and fig. 5 is a cross-sectional view of the pneumatic measuring head and a measuring fixture in the automatic cylinder head inner diameter detection system of the present invention. The measuring device 2 comprises a pneumatic measuring head 21, a controller (not shown in the figure), a communication module (not shown in the figure) and a touch screen (not shown in the figure), wherein the first end of the pneumatic measuring head 21 is detachably arranged on the driving device 3; eight air outlet holes 211 and four air inlet holes 212 are formed in the pneumatic measuring head 21, wherein two of the eight air outlet holes 211 form four air outlet hole groups, and the two air outlet holes 211 of each air outlet hole group are symmetrically arranged on two sides of the same longitudinal section of the pneumatic measuring head 21; two of the four sets of air outlet holes are arranged in the middle of the pneumatic measuring head 21, and the other two sets of air outlet holes are arranged at the second end of the pneumatic measuring head 21; the four air inlets 212 are arranged at the position close to the first end of the pneumatic measuring head 21 and are all arranged on the same cross section of the pneumatic measuring head 21, the four air inlets 212 correspond to four groups of air outlet holes one by one, and any one air inlet 212 is communicated with two air outlet holes 211 of the corresponding air outlet hole group through an air passage 213; any air inlet hole 212 is connected with an air source 23 through an air-electric converter 22; the controller is connected with the gas-electric converter 22 through a communication module; the controller is respectively connected with the driving device 3, the touch screen and the joint robot 5. The inner hole detected by the motorcycle cylinder cover is generally a camshaft hole, two camshaft holes are arranged in the cylinder cover, the sizes of the two camshaft holes are phi 26.01 +/-0.01 and phi 37.044 +/-0.01 respectively, in order to simultaneously detect the sizes of two camshaft holes with phi 26.01 +/-0.01 and phi 37.044 +/-0.01, eight air outlet holes 211 and four air inlet holes 212 are arranged on the pneumatic measuring head 21, wherein, the eight air outlet holes 211 are divided into two groups to form four air outlet hole groups, wherein, the two air outlet holes 211 of each air outlet hole group are communicated with each other, in the four air outlet hole groups, wherein two sets of air outlet hole groups are arranged in the middle of the pneumatic measuring head 21 and are used for correspondingly measuring the camshaft holes with phi 37.044 +/-0.01 when the pneumatic measuring head 21 is inserted into the cylinder cover 8 to be measured, the other two sets of air outlet hole groups are arranged at the second end of the pneumatic measuring head 21, the cam shaft hole for measuring phi 26.01 +/-0.01 is correspondingly formed when the pneumatic measuring head 21 is inserted into the cylinder cover 8 to be measured. The air passages 213 are disposed in the pneumatic measuring head 21 and are annularly distributed with reference to the central axis of the pneumatic measuring head 21. The output end of the gas-electric converter 22 is communicated with the corresponding air inlet hole 212, specifically, a connector is arranged on the air inlet hole 212, and the air inlet hole 212 is communicated with the corresponding gas-electric converter 22 through the connector; the input end of the gas-electric converter 22 is connected with the gas source 23, and preferably, an electric switch is arranged between the output end of the gas source 23 and the input end of the starting point conversion module. Preferably, the output of the air source 23 is provided with a pressure regulating valve. The controller may be a PLC (programmable logic controller) for controlling the movement position of the linear driving module 33 and the movement position of the articulated robot 5 in the driving device 3, and processing data transmitted from the communication module. In the working process, the gas-electric converter 22 sends the read airflow flow to the controller through the communication module, the controller processes the airflow flow to obtain the size data of the two camshaft holes of the cylinder cover 8 to be tested, the size data are displayed through the touch screen, an operator confirms the state of an equipment cutter for machining the hole according to the size data of the two camshaft holes of the cylinder cover 8 to be tested, which is displayed by the touch screen, and meanwhile, the touch screen is also used as a human-computer interaction interface for human-computer interaction. In an embodiment, the second end of the pneumatic measuring head 21 extends radially outward to form a first expanding portion, the middle of the pneumatic measuring head 21 extends radially outward to form a second expanding portion, two ends of the first expanding portion and the second expanding portion are respectively designed by chamfering, two sets of the four sets of the air outlet holes are arranged on the first expanding portion, and the other two sets of the air outlet holes are arranged on the second expanding portion. The first extension part and the second extension part are designed, when the pneumatic measuring head 21 is inserted into two camshaft holes of the cylinder cover 8 to be measured, the first extension part and the second extension part can be in contact with the cylinder cover 8 to be measured, the position of the cylinder cover 8 to be measured is corrected, and coaxiality of the two camshaft holes and the pneumatic measuring head 21 is ensured to be within an error range.

In an embodiment, two of the four air inlets 212 form two sets of air inlet sets, wherein two air inlets 212 of one set of air inlet sets correspond to two sets of air outlet sets disposed in the middle of the pneumatic measuring head 21 one by one, two air inlets 212 of the other set of air inlet sets correspond to two sets of air outlet sets disposed at the second end of the pneumatic measuring head 21 one by one, any one air inlet 212 and two air outlets 211 of the corresponding air outlet set are disposed on the same longitudinal section of the pneumatic measuring head 21, and the openings of the two air inlets 212 of the same set of air inlet sets face to be perpendicular to each other. The opening orientations of the two air inlet holes 212 of the same air inlet hole group are perpendicular to each other, so that the four air outlet holes 211 corresponding to the two air inlet holes 212 of the same air inlet hole group are arranged on the circumference of the same cross section of the pneumatic measuring head 21 at equal intervals, and the detection result is more accurate when two camshaft holes of the cylinder cover 8 to be detected are detected.

Drive arrangement 3 includes mounting panel 31, measures anchor clamps 32, linear drive module 33 and supplementary slide rail 34, and mounting panel 31 one end is connected with the drive of linear drive module 33, and the other end and supplementary slide rail 34 sliding connection, measure anchor clamps 32 and set up on mounting panel 31, and can dismantle with pneumatic measuring head 21 and be connected, and linear drive module 33 all sets up on measuring platform 1 with supplementary slide rail 34, and is parallel to each other. The linear driving module 33 drives the mounting plate 31 to move, the mounting plate 31 drives the measuring device 2 to move on the measuring platform 1 through the measuring clamp 32, so that the pneumatic measuring head 21 of the measuring clamp 32 is inserted into two cam shaft holes of the cylinder cover 8 to be measured, the auxiliary slide rail 34 and the linear driving module 33 are designed in parallel, and the moving stability of the mounting plate 31 is ensured. In an embodiment, the first end of the pneumatic measuring head 21 is provided with a through hole 214, the measuring clamp 32 includes a supporting plate 321, a sliding rod assembly and a fixing bolt 322, one end of the sliding rod assembly is provided with an insertion hole for inserting the first end of the pneumatic measuring head 21, the other end of the sliding rod assembly is disposed on the supporting plate 321, a threaded hole 327 corresponding to the through hole 214 is disposed on a sidewall of the insertion hole, the first end of the pneumatic measuring head 21 is inserted into the insertion hole of the sliding rod assembly and is screwed into the threaded hole 327 and the through hole 214 for fixing through the fixing bolt 322, so that the first end of the pneumatic measuring head 21 is detachably mounted on the. The pneumatic measuring head 21 and the sliding rod assembly are designed to be detachably mounted, so that the pneumatic measuring head 21 can be conveniently replaced, and only the corresponding pneumatic measuring head 21 is replaced if the inner holes of other workpieces need to be measured later. In one embodiment, the through hole 214 is a tapered hole, and the fixing bolt 322 includes a tapered portion engaged with the tapered hole and a threaded portion engaged with the threaded hole 327, and the tapered portion is inserted into the tapered hole by adjusting the position of the threaded portion in the threaded hole 327.

In an embodiment, the automatic detection system for the inner diameter of the cylinder head further includes a warning device (not shown in the figure) for giving a warning, the sliding rod assembly includes a fixed rod 323, a movable rod 324, a sensor 325 and a first elastic member 326, the fixed rod 323 is disposed on the supporting plate 321 in a penetrating manner, a receiving cavity is disposed in the fixed rod 323 and penetrates through both ends of the fixed rod, the insertion hole is disposed at one end of the movable rod 324, the other end of the movable rod 324 penetrates through the receiving cavity of the fixed rod 323 and then is connected with the sensor 325, the supporting plate 321 is provided with an induction head 3211 matched with the sensor 325, the first elastic member 326 is disposed on the outer side of the movable rod 324, one end of the first elastic member abuts against the movable rod 324, the other end of the first elastic member abuts against. When the linear driving module 33 drives the pneumatic measuring head 21 to move towards the cylinder head 8 to be measured through the mounting plate 31, it is considered that the pneumatic measuring head 21 may occur and have no more same axial degree with two camshaft holes of the cylinder head 8 to be measured, the pneumatic measuring head 21 cannot be inserted into two camshaft holes of the cylinder head 8 to be measured, the pneumatic measuring head 21 is blocked by the cylinder head 8 to be measured, the elastic force of the first elastic piece 326 is overcome, the pneumatic measuring head moves towards the direction of the supporting plate 321, thereby the sensor 325 and the induction head 3211 are separated, at the moment, the sensor 325 sends a warning signal to the controller, and the controller controls the warning device to send a warning to remind an operator. Thereby this setting can prevent that pneumatic measuring head 21 from when can not inserting two camshaft holes of the cylinder head 8 that awaits measuring, avoids sharp drive module 33 to continue to drive pneumatic measuring head 21 through mounting panel 31 and remove to the cylinder head 8 that awaits measuring, leads to damaging pneumatic measuring head 21, can send the warning through alarm device simultaneously, reminds the adjustment of operation personnel. Meanwhile, in the embodiment, the controller controls the warning device to send out a warning according to the warning signal sent by the sensor 325, and after the controller obtains the size data of the two camshaft holes of the cylinder head 8 to be measured, respectively comparing the size data of the two camshaft holes of the cylinder cover 8 to be tested with the pre-stored preset size data of the two camshaft holes, judging whether the size data of the two camshaft holes of the cylinder cover 8 to be tested is qualified or not, if the size data of the two camshaft holes of the cylinder cover 8 to be tested is judged to be unqualified, the warning device is also controlled to give a warning to remind the operator of the size problem or the pneumatic measuring head 21 can not be inserted into the two camshaft holes of the cylinder head 8 to be measured, if the size data of the two camshaft holes of the cylinder cover 8 to be detected is judged to be qualified, the warning device cannot be controlled to be started. Preferably, the warning device comprises a flashing light and a buzzer. Preferably, the first elastic member 326 is a spring.

Referring to fig. 6, fig. 6 is an enlarged schematic view of the area a of fig. 2 of the automatic detection system for the inner diameter of the cylinder head according to the present invention. In an embodiment, the positioning fixture 4 is a zero point positioning system, and includes a mother board 41 and a daughter board 42 matched with the mother board 41, the mother board 41 is installed on the measuring platform 1, a side surface of the daughter board 42 away from the mother board 41 is provided with first positioning pins 421 corresponding to a plurality of positioning holes of the cylinder head 8 to be measured, and the first positioning pins 421 are in clearance fit with the corresponding positioning holes. The matching structure of the motherboard 41 and the daughter board 42 is as follows: the motherboard 41 is provided with a locker, one side surface of the daughter board 42 away from the first positioning pin 421 is provided with a locking pin matched with the locker, and the locking pin on the daughter board 42 is automatically positioned after extending into the locker of the motherboard 41 and is locked by a locking module in the locker. Since the measured characteristics of the cylinder heads 8 to be measured of different models are the same, that is, the characteristics of the two camshaft holes in the cylinder heads 8 to be measured of all models are the same, the difference is the positions of the positioning holes of the cylinder heads 8 to be measured and the heights of the cylinder heads. Through the positioning system at zero point, be convenient for different daughter boards 42 of quick replacement, and guarantee the requirement of precision, first locating pin 421 needle length on the different daughter boards 42 is to the cylinder head 8 that awaits measuring of different models, through the cylinder head 8 that awaits measuring that changes different daughter boards 42 in order to correspond all models, when making the cylinder head 8 that awaits measuring of different models place on positioning fixture 4, two camshaft holes of the cylinder head 8 that awaits measuring are in the same position, thereby pneumatic measuring head 21 can insert and carry out pneumatic detection in two camshaft holes of the cylinder head 8 that awaits measuring. The clearance fit between the first positioning pin 421 and the corresponding positioning hole is to make the air flow ejected from the air outlet 211 of the pneumatic measuring head 21 perform fine adjustment on the position of the cylinder head 8 to be measured in the horizontal direction when the pneumatic measuring head 21 is inserted into the two camshaft holes of the cylinder head 8 to be measured, eliminate the error of the cylinder head 8 to be measured in the horizontal direction, and ensure that the coaxiality of the two camshaft holes and the pneumatic measuring head 21 is within the error range. In the embodiment, if the operator finds that the pneumatic measuring head 21 cannot be inserted into the two camshaft holes of the cylinder head 8 to be tested during the troubleshooting when the warning device gives a warning, the corresponding sub-plate 42 can be replaced, so that the pneumatic measuring head 21 can be inserted into the two camshaft holes of the cylinder head 8 to be tested for pneumatic detection.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a tail end of a joint robot in the automatic detection system for the inner diameter of the cylinder head according to the present invention. In an embodiment, the end of the joint robot 5 is further provided with an auxiliary pressing component, the auxiliary pressing component includes a fixed plate 52, a movable plate 53 and a second elastic member 54, the fixed plate 52 is fixed at the end of the joint robot 5, and both ends of the fixed plate are provided with fixed columns 55, the lower ends of the fixed columns 55 penetrate through the sliding plate and then are connected with a limiting member 57, the movable plate 53 can move up and down along the fixed columns 55, the movable plate 53 is detachably mounted with a plurality of pressing members 56, and the second elastic member 54 is arranged between the fixed plate 52 and the movable plate 53. The limiting part 57 may be a limiting nut, a thread matched with the limiting nut is arranged on the fixed column 55, and the movable plate 53 is limited by the threaded matching of the limiting nut and the fixed column 55, so that the movable plate 53 is prevented from falling off from the fixed column 55. When the pneumatic measuring head 21 is inserted into the two camshaft holes of the cylinder head 8 to be measured, the pressing piece 56 on the movable plate 53 presses the top of the cylinder head 8 to be measured, and due to the second elastic piece 54 arranged between the movable plate 53 and the fixed plate 52, the cylinder head 8 to be measured can slightly move in the vertical direction when overcoming the elastic force of the second elastic piece 54 under the action of the air flow sprayed from the air outlet hole 211 of the pneumatic measuring head 21, so that the error of the cylinder head 8 to be measured in the vertical direction is eliminated, and the coaxiality of the two camshaft holes of the cylinder head 8 to be measured and the pneumatic measuring head 21 is further ensured to be within the error range. In an embodiment, the second elastic element 54 is a spring, the number of the springs is two, the two springs are respectively sleeved on the outer sides of the two fixed columns 55, and two ends of the two springs are respectively abutted against the fixed plate 52 and the movable plate 53. Specifically, the pressing member 56 has an overall cylindrical shape, and a lower end thereof is formed in a truncated cone shape.

In an embodiment, the automatic detection system for the inner diameter of the cylinder head further comprises a calibration ring gauge 6, and the calibration ring gauge 6 is located on one side of the positioning fixture 4 away from the measuring device 2 and is fixed on the measuring platform 1. The calibration ring gauge 6 is integrated in the automatic detection system for the inner diameter of the cylinder cover, so that when the automatic detection system for the inner diameter of the cylinder cover starts to perform initial detection, the pneumatic measuring head 21 can be moved into the calibration ring gauge 6, and the measurement amplification digits are determined through calibration of the calibration ring gauge 6, or after every dozens of cylinders to be detected are detected by the automatic detection system for the inner diameter of the cylinder cover, the pneumatic measuring head 21 can be moved into the calibration ring gauge 6, and the measurement amplification digits are determined through calibration of the calibration ring gauge 6 again, so that the accuracy of the measuring result is ensured. The calibration ring gauge 6 comprises a first upper limit ring gauge, a first lower limit ring gauge, a second upper limit ring gauge and a second lower limit ring gauge which are sequentially connected, and can simultaneously determine the measurement amplification digits of two camshaft holes of the cylinder cover 8 to be measured. The specific process is as follows: when the pneumatic measuring head 21 is inserted into the calibration ring gauge 6, the second end outlet 211 is located in the first upper limit ring gauge, the middle outlet 211 is located in the second upper limit ring gauge, the flow rate value of the first upper limit ring gauge is recorded as Fl1, the flow rate value of the second upper limit ring gauge is recorded as Fl2, and then the pneumatic measuring head 21 is moved so that the second end outlet 211 of the pneumatic measuring head 21 is located in the first lower limit ring gauge, the middle outlet 211 is located in the second lower limit ring gauge, the flow rate value of the first lower limit ring gauge is recorded as Fl3, the flow rate value of the second lower limit ring gauge is recorded as Fl4, since the inner diameter Da of the first upper limit ring gauge, the inner diameter Db of the first lower limit ring gauge, the inner diameter Dc of the second upper limit ring gauge and the inner diameter Dd of the second lower limit ring gauge are known, a unit flow Dfl1 is obtained according to (Fl1-Fl 3-Fl-Db)/(Dfl 1, i.e. the unit flow rate measured by the first upper limit ring gauge and the first lower limit ring gauge, from (Fl2-Fl 4)/(Dc-Dd) ═ Dfl2, the unit size flow rate Dfl2, the number of measurement amplification bits determined by the second upper and lower ring gauges, was obtained.

In an embodiment, the automatic detection system for the inner diameter of the cylinder cover further comprises a transition platform 7, wherein the transition platform 7 is arranged at one end of the measuring platform 1 and used for placing a cylinder cover 8 to be detected. Because the cylinder head 8 to be measured needs to be cleaned after the fine boring processing, the temperature of the cleaned cylinder head 8 to be measured rises, so that the transition platform 7 is arranged, a plurality of cylinder heads 8 to be measured can be placed on the transition platform 7, and the cylinder heads 8 to be measured can be cooled on the transition platform 7. The joint robot 5 clamps the cylinder heads 8 to be measured according to the sequence that the cylinder heads 8 to be measured are placed on the transition platform 7, clamps the cylinder heads 8 to be measured placed on the transition platform 7 through the work piece clamp 51, and places the clamped cylinder heads 8 to be measured on the positioning clamp 4. In one embodiment, the transition platform 7 is provided with a plurality of second positioning pin sets at equal intervals, and each second positioning pin set comprises two second positioning pins arranged at intervals. The first positioning pin 421 is matched with the positioning hole of the cylinder cover to accurately position the position of the cylinder cover 8 to be measured on the transition platform 7, so that the joint robot 5 can clamp the cylinder cover 8 to be measured on the transition platform 7 conveniently.

The working process of the invention is as follows: initially, the mounting plate 31 is driven by the linear driving module 33 of the driving device 3 to drive the pneumatic measuring head 21 to be inserted into the calibration ring gauge 6, and two measurement amplification digits Dfl1 and Dfl2 are obtained by measurement of the calibration ring gauge 6. According to the sequence that the cylinder covers 8 to be measured are placed on the transition platform 7, the joint robot 5 clamps the corresponding cylinder covers 8 to be measured on the transition platform 7, moves the clamped cylinder covers 8 to be measured to the position of the positioning fixture 4 from the transition platform 7, places the cylinder covers 8 to be measured on the positioning fixture 4, is positioned by the positioning fixture 4, and meanwhile, the auxiliary pressing assembly of the joint robot 5 presses the tops of the cylinder covers 8 to be measured. Then, the linear driving module 33 of the driving device 3 drives the mounting plate 31 to move, so that the pneumatic measuring head 21 is inserted into two cam shaft holes of the cylinder head 8 to be measured, after the air pressure is stabilized, the four pneumatic-electric converters 22 start flow reading, the flow reading is sent to the PLC through the communication module, the PLC obtains the flow Fl5 of the air outlet hole 211 at the second end of the pneumatic measuring head 21 and the flow Fl6 of the air outlet hole 211 in the middle of the pneumatic measuring head 21, the PLC processes the flow reading, the size data D1 and D2 of the two cam shaft holes are obtained through formulas Fl5 × Dfl1+ Db ═ D1 and Fl6 × Dfl2+ Dd ═ D2, then the size data of the two cam shaft holes are displayed through the touch screen, and an operator confirms the state of an equipment cutter for processing the two cam shaft holes of the cylinder head to be measured according to the size data of the two cam shaft holes displayed by the touch screen.

Compared with the prior art, the invention has the beneficial effects that: design according to automation line, adapt to automation line's design demand, press from both sides through joint robot 5 and get the cylinder head 8 that awaits measuring to place the cylinder head 8 that awaits measuring and fix a position on positioning fixture 4, drive arrangement 3 drive measuring device 2 removes to the cylinder head 8 that awaits measuring in, measures the size in the camshaft hole of the cylinder head 8 that awaits measuring, whole process need not manual work, and degree of automation is high, and detection efficiency is high, saves test time, can avoid manual operation unstability simultaneously, avoids because manual manipulation and custom bring the uncertainty of test result, thereby improves the accuracy of measuring result, reduces detection cost.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention will still fall within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.