阅读说明：本技术 一种高铁列车轮对智能配盘桁架机械手末端执行器 (intelligent distribution plate truss manipulator end effector for high-speed rail train wheel set ) 是由 张爽 王�华 高金刚 侯岱双 陈儒 于 2019-08-21 设计创作，主要内容包括：本发明公开了一种高铁列车轮对智能配盘桁架机械手末端执行器,包括承载安装座、伺服电机、直线导轨、手爪和正反丝杠；所述承载安装座水平布置；伺服电机与承载安装座的一侧端部固定连接；直线导轨设有两个,两个直线导轨对称的安装于承载安装座的下端；手爪设有两个且均竖直布置,两个手爪的一端分别与两个直线导轨固定连接；正反丝杠一端与伺服电机的输出轴固定连接,其另一端分别穿过两个直线导轨并与承载安装座可枢转的连接。该执行器可以通过伺服电机带动手爪对工件进行抓取动作,自动化程度高,且抓取工件的过程更加准确,更符合现代高铁生产制造企业对于轮对装配工作高效、准确的需求。(The invention discloses an end effector of an intelligent matching truss manipulator of a wheel set of a high-speed train, which comprises a bearing mounting seat, a servo motor, a linear guide rail, a paw and a positive and negative screw rod; the bearing mounting seats are horizontally arranged; the servo motor is fixedly connected with the end part of one side of the bearing mounting seat; the two linear guide rails are symmetrically arranged at the lower end of the bearing mounting seat; two claws are vertically arranged, and one ends of the two claws are fixedly connected with the two linear guide rails respectively; one end of the positive and negative screw rods is fixedly connected with an output shaft of the servo motor, and the other end of the positive and negative screw rods respectively penetrates through the two linear guide rails and is connected with the bearing mounting base in a pivoting manner. This executor can drive the hand claw through servo motor and snatch the action to the work piece, and degree of automation is high, and the process of snatching the work piece is more accurate, more accords with the demand that modern high-speed railway manufacturing enterprise is high-efficient, accurate to wheel pair assembly work.)

1. An end effector of an intelligent distribution truss manipulator of a high-speed rail train wheel set is characterized by comprising a bearing mounting seat, a servo motor, a linear guide rail, a paw and a positive and negative screw rod;

the bearing mounting seats are horizontally arranged;

The servo motor is fixedly connected with the end part of one side of the bearing mounting seat;

The two linear guide rails are symmetrically arranged at the lower end of the bearing mounting seat;

Two claws are vertically arranged, and one ends of the two claws are fixedly connected with the two linear guide rails respectively;

One end of the positive and negative screw rod is fixedly connected with an output shaft of the servo motor, and the other end of the positive and negative screw rod penetrates through the two linear guide rails respectively and is connected with the bearing mounting base in a pivoting manner.

2. the end effector of the intelligent distribution truss manipulator of the high-speed rail train wheel set according to claim 1, further comprising a servo motor driver, wherein the servo motor driver is electrically connected with the servo motor, the servo motor driver is fixedly installed at one side end portion, close to the servo motor, of the bearing installation seat, and the servo motor driver is used for acquiring a torque value of the servo motor in real time, comparing and analyzing the torque value with a preset torque threshold value, and controlling the servo motor to rotate forwards or backwards according to an analysis result.

3. The end effector of the intelligent distribution plate truss manipulator of the high-speed rail train wheel set according to claim 1, wherein a plurality of pressure sensors are fixedly connected to one side of each of two grippers for clamping a workpiece, and the pressure sensors are used for detecting clamping force values of the two grippers.

4. The intelligent match plate truss manipulator end effector for the high-speed train wheel set according to claim 1 or 3, wherein corresponding supporting pins are arranged on one side, clamping a workpiece, of the other ends of the two claws.

5. The intelligent match plate truss manipulator end effector for the high-speed train wheel set according to claim 4, wherein two supporting pins are arranged on each paw, and the two supporting pins are symmetrically arranged.

6. The end effector of the intelligent distribution truss manipulator of the high-speed railway train wheel set is characterized in that a protecting sleeve for protecting an inner hole of a workpiece is arranged at the end of each supporting pin for supporting the workpiece.

7. The intelligent match plate truss manipulator end effector of a high-speed rail train wheel set according to claim 6, wherein the hardness of the material of the protective sleeve is lower than that of the material of the workpiece to be lifted.

8. The intelligent matching truss manipulator end effector for the train wheel pair of the high-speed rail as claimed in claim 3, 6 or 7, wherein the workpiece is a wheel or a brake disc, and the mass of the wheel or the brake disc is 495 Kg.

Technical Field

The invention relates to the technical field of intelligent matching of rail transit, in particular to an end effector of an intelligent matching plate truss manipulator of a high-speed rail train wheel set.

Background

At present, in domestic high-speed train manufacturing enterprises, the required workpieces such as axles, wheels, brake discs and the like are selected manually according to the magnitude of interference between the axle diameter of an axle and the diameters of assembly holes of the wheels and the brake discs. The assembly process method not only consumes a large amount of manpower, but also has low assembly efficiency, and does not meet the production management requirements of modern high-speed rail production and manufacturing enterprises. Meanwhile, the existing manipulator has the problems of insecure grabbing and deviation of the placing position due to workpiece eccentricity in the process of grabbing workpieces, and is not suitable for grabbing work of wheels or brake discs and other workpieces which are large in mass and have strict requirements on assembly precision.

Therefore, how to provide an end effector of an intelligent wheel set matching truss manipulator, which has high automation degree and can accurately grab a workpiece, is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the invention provides the end effector of the intelligent distribution plate truss manipulator for the wheel set of the high-speed rail train, which can drive the gripper to grab a workpiece through the servo motor, so that the selection work of manually grabbing the workpiece to grab the wheel set is omitted, the automation degree of the effector is high, the workpiece grabbing process is more accurate, and the problems that the traditional assembly process method consumes a large amount of manpower, the assembly efficiency is low, and the production management requirements of modern high-speed rail production and manufacturing enterprises are not met are solved.

In order to achieve the purpose, the invention adopts the following technical scheme:

An end effector of an intelligent distribution plate truss manipulator of a high-speed rail train wheel set comprises a bearing mounting seat, a servo motor, a linear guide rail, a paw and a positive and negative screw rod;

The bearing mounting seats are horizontally arranged;

the servo motor is fixedly connected with the end part of one side of the bearing mounting seat;

the two linear guide rails are symmetrically arranged at the lower end of the bearing mounting seat;

two claws are vertically arranged, and one ends of the two claws are fixedly connected with the two linear guide rails respectively;

One end of the positive and negative screw rod is fixedly connected with an output shaft of the servo motor, and the other end of the positive and negative screw rod penetrates through the two linear guide rails respectively and is connected with the bearing mounting base in a pivoting manner.

On the basis of the above scheme, the technical scheme provided by the invention is further explained.

further, the end effector of the intelligent distribution truss manipulator of the high-speed rail train wheel set further comprises a servo motor driver, the servo motor driver is electrically connected with the servo motor, the servo motor driver is fixedly installed at the end portion, close to the servo motor, of one side of the bearing installation seat, and the servo motor driver is used for acquiring the torque value of the servo motor in real time, comparing and analyzing the torque value with a preset torque threshold value, and controlling the servo motor to rotate forwards or backwards according to an analysis result. The servo motor driver can monitor the motor torque value in real time, when the torque value exceeds a set value, the deviation is over large, the servo motor driver controls the servo motor to rotate reversely, the positive lead screw and the negative lead screw drive the gripper to move a set value in the reverse direction, the angle for grabbing the workpiece is adjusted through the positive rotation and the reverse rotation of the servo motor, and the problem that the workpiece is easy to be eccentric when an actuator grabs the workpiece is solved.

Furthermore, a plurality of pressure sensors are fixedly connected to one side of each of the two claws for clamping the workpiece, and the pressure sensors are used for detecting the clamping force values of the two claws. The pressure sensor can cooperate with the servo motor driver to complete eccentric detection on one hand, and can also detect the clamping state of the gripper on the other hand, so that the gripper can safely and reliably operate after accurately and stably grabbing a workpiece, and the follow-up accurate tray matching operation of the truss manipulator is not influenced.

Furthermore, one side of the other end of each of the two claws for clamping the workpiece is provided with a supporting pin corresponding to the position.

Furthermore, each paw is provided with two supporting pins which are symmetrically arranged.

Furthermore, the end part of each supporting pin for supporting the workpiece is provided with a protective sleeve for protecting the inner hole of the workpiece.

furthermore, the hardness of the material of the protective sleeve is lower than that of the material of the workpiece to be supported.

further, the workpiece is a wheel or a brake disc, and the mass of the wheel or the brake disc is 130-495 Kg.

The beneficial effect of adopting above-mentioned technical scheme is: the supporting pin can play a role in supporting a workpiece, two supporting pins are designed at the end part of each side of the paw, the process of grabbing the workpiece with large quality can be ensured to be safe and reliable, the outer surface of the supporting pin is sleeved with a protective sleeve, and the end part of the supporting pin can be prevented from scratching the inner hole surface of the workpiece.

According to the technical scheme, compared with the prior art, the invention discloses the end effector of the intelligent distribution plate truss manipulator for the wheel set of the high-speed rail train, which can drive the gripper to grab a workpiece through the servo motor, so that a large amount of labor is saved, the degree of automation of the effector is high, the workpiece grabbing process is more accurate, and the requirements of modern high-speed rail production and manufacturing enterprises on high efficiency and accuracy of wheel set assembly work are met.

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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an end effector of an intelligent distribution truss manipulator of a high-speed rail train wheel set provided by the invention;

FIG. 2 is a schematic diagram illustrating the installation position of a pressure sensor according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating a force relationship between a pressure sensor and a workpiece according to an embodiment of the present invention;

FIG. 4 is a schematic view of a wheel according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a brake disc according to an embodiment of the present invention;

fig. 6 is a schematic overall structure diagram of the entire disc matching device in the embodiment of the invention.

Detailed Description

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 the attached drawing 1, the embodiment of the invention discloses an end effector of an intelligent distribution plate truss manipulator of a wheel set of a high-speed train, which comprises a bearing mounting seat 7, a servo motor 8, a linear guide rail 2, a paw 4 and a positive and negative screw rod 3;

the bearing mounting seat 7 is horizontally arranged;

The servo motor 8 is fixedly connected with the end part of one side of the bearing mounting seat 7;

Two linear guide rails 2 are arranged, and the two linear guide rails 2 are symmetrically arranged at the lower end of the bearing mounting seat 7;

Two claws 4 are vertically arranged, and one ends of the two claws 4 are fixedly connected with the two linear guide rails 2 respectively;

one end of the positive and negative screw rod 3 is fixedly connected with an output shaft of the servo motor 8, and the other end thereof respectively penetrates through the two linear guide rails 2 and is connected with the bearing mounting base 7 in a pivoting manner.

in a specific embodiment, the end effector of the intelligent distribution truss manipulator for the high-speed rail train wheel set further comprises a servo motor driver 1, the servo motor driver 1 is electrically connected with a servo motor 8, the servo motor driver 1 is fixedly installed at one side end portion, close to the servo motor 8, of the bearing installation seat 7, and the servo motor driver 1 is used for acquiring a torque value of the servo motor 8 in real time, comparing and analyzing the torque value with a preset torque threshold value, and controlling the servo motor 8 to rotate forwards or backwards according to an analysis result.

The servo motor driver 1 can monitor the torque value of the servo motor 8 in real time, when the torque value exceeds a set value, the deviation is over large, the servo motor driver 1 controls the servo motor 8 to rotate reversely, the positive and negative screw rods 3 drive the hand claws 4 to move by a set value in the reverse direction, the angle for grabbing the workpiece is adjusted through the positive and negative rotation of the servo motor 8, and the problem that the workpiece is easy to be eccentric when an actuator grabs the workpiece is solved.

in a specific embodiment, referring to fig. 2 and 3, a plurality of pressure sensors 5 are fixedly connected to both sides of the workpiece clamped by the two grippers 4, and the pressure sensors 5 are used for detecting the clamping force values of the two grippers 4. The pressure sensor 5 can be matched with the servo motor driver 1 to complete eccentric detection, and can also detect the clamping state of the gripper, so that the gripper can safely and reliably operate after accurately and stably grabbing a workpiece, and subsequent accurate tray matching operation of the truss manipulator is not influenced. In this embodiment, four pressure sensors 5 are provided on the two grippers 4, and are respectively used for detecting the clamping state of the workpiece.

in a specific embodiment, the other ends of the two claws 4 are provided with corresponding supporting pins 6 on the side for clamping the workpiece.

In a specific embodiment, two supporting pins 6 are arranged on each paw 4, and the two supporting pins 6 are symmetrically arranged.

in a particular embodiment, the end of each holding pin 6 for holding the workpiece is provided with a protective sleeve for protecting the inner bore of the workpiece.

specifically, the hardness of the material of the protective sleeve is lower than that of the material of the workpiece to be supported.

more specifically, the workpiece may be a wheel or a brake disc, and the mass of the wheel or the brake disc is 130-.

The supporting pin 6 can play a role in supporting a workpiece, two supporting pins 6 are designed at the end part of each side paw 4, the workpiece grabbing process can be ensured to be safe and reliable, the protective sleeve is sleeved on the outer surface of the supporting pin 6, and the end part of the supporting pin 6 can be prevented from scratching the inner hole surface of the workpiece. In order to achieve a better protection effect, the protective sleeve can be made of materials softer than the workpiece, such as rubber, silica gel and the like.

as shown in fig. 4 and 5, the structure of the grasped workpiece is a round cake shape, and the center of the grasped workpiece is provided with a central hole a and a central hole b, a tray-matching truss manipulator 9 shown in fig. 6 is designed to be used, and the end effector is an actuating mechanism of the tray-matching truss manipulator. The pallet matching truss robot 9 can perform a pallet matching operation of each pallet 11 on the conveyor line 10 by using a wheel shown in fig. 4 or a brake disk shown in fig. 5 which is automatically grasped by an end effector attached to the Z-axis end portion.

Referring to fig. 1 and the schematic structural diagram of the entire disc matching device in the practical application process shown in fig. 6, the process of taking the wheel or the brake disc of the end effector in the present embodiment is described as follows:

Servo motor 8 drives hand claw 4 through positive and negative lead screw 3 and presss from both sides tight work piece, when there is the deviation in Z axle axis position and work piece plumb line position, pressure sensor 5 on the hand claw 4 that will have one side contacts wheel or brake disc surface earlier, servo motor driver 1 real-time supervision servo motor 8's torque value simultaneously, when the torque value exceeded the setting value, show that the deviation is too big, servo motor driver 1 will control servo motor 8 reversal, positive and negative lead screw 3 drives hand claw 4 and moves a displacement value to the opposite direction. The adjustment is carried out through the forward rotation and the reverse rotation of the servo motor 8 until the gripper 4 accurately clamps the workpiece.

Referring to fig. 1 and the schematic structural diagram of the entire disc matching device in the practical application process shown in fig. 6, the implementation process of placing the wheel or the brake disc by the end effector in the present embodiment is described as follows:

when the end effector grabs the wheel or brake disc and moves down above the tray 11 to be matched,

firstly, when a wheel or a brake disc does not touch a profiling supporting block on the tray and can correctly reach a specified position, the position of the tray 11 is not deviated;

Secondly, when the wheel or the brake disc falls and touches the leading-in port of the profiling support block, the value of the pressure sensor 5 on one side of the paw 4 is suddenly increased, at the moment, the servo motor driver 1 controls the servo motor 8 to rotate reversely, the positive and negative lead screws 3 drive the paw 4 to move in the opposite direction by a displacement value, and the servo motor controller 1 controls the servo motor 8 to rotate to continuously adjust the position relation between the wheel or the brake disc and the profiling support block, so that the wheel or the brake disc can smoothly enter the profiling support block.

in the developed intelligent wheel set matching system of the high-speed rail train, the disc matching truss manipulator 9 automatically judges the type and the position of the workpiece on the position of the pallet 11 on the four conveying lines 10 shown in fig. 6, and the end effector in the embodiment is used for grabbing the workpiece to the preset position of the pallet 11, so that the intelligent matching of one wheel set assembly workpiece is completed. The plate-matching truss manipulator 1 only adopts one set of the end effector, and can automatically take and place the workpieces by grabbing wheel inner holes a and brake disc inner holes b without replacing the end effector.

The gripper 4, the servo motor 8, the servo motor actuator 1 and the pressure sensor 5 work in a matched mode, the end effector is guaranteed to run safely and reliably after accurately and stably grabbing wheels or brake discs, and follow-up accurate disc matching operation of the whole disc matching truss manipulator 9 is not affected.

In summary, compared with the prior art, the invention discloses and provides the end effector of the intelligent distribution truss manipulator for the wheel set of the high-speed rail train, the end effector can drive the gripper to grab a workpiece through the servo motor, the selection work of manually grabbing the workpiece to grab the wheel set is omitted, particularly, the end effector can automatically grab an eccentric structure with high accuracy and high automation degree, the quality of the wheel set is 495Kg, and the brake disc has high automation degree, the process of grabbing the workpiece is more accurate, and the end effector meets the requirements of modern high-speed rail production and manufacturing enterprises on high efficiency and accuracy of wheel set assembly work.

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 device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the 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.