A multifunctional detection device for motor shell

Abstract

The utility model discloses a kind of multifunctional detection devices of motor shell, including workbench, multi-joint manipulator, insulation withstand voltage detection mechanism and concentricity detection mechanism, multi-joint manipulator, insulation withstand voltage detection mechanism and concentricity detection mechanism are all set on workbench, insulation withstand voltage detection mechanism is set on the side of concentricity detection mechanism;Multi-joint manipulator is used to put motor shell on concentricity detection mechanism by the clamping jaw of end portion to carry out concentricity detection, carries out insulation withstand voltage test by insulation withstand voltage detection mechanism, motor shell is taken off from concentricity detection mechanism by clamping jaw, positioning sensor for detecting the placement position of motor shell is provided on workbench, so that motor shell is placed according to fixed position to facilitate concentricity and insulation withstand voltage detection, realize automatic operation, solve the problem that concentricity detection and insulation withstand voltage detection process are independent of each other, need rely on manual operation between, production efficiency is low.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, and in particular to a multifunctional testing device for motor housings. Background Technology

[0002] During the motor manufacturing process, the excitation winding is mounted onto the motor housing using shims and bolts. Then, the personnel first place the motor housing on the concentricity testing mold for concentricity testing, and then transfer the installed motor coil to the resistance testing station for insulation testing. During this process, the personnel also need to repeatedly pick up and drop the motor housing for testing and transfer. It can be seen that the above processes are independent of each other and rely on manual transfer, resulting in low production efficiency. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a multi-functional testing device for motor housings, which solves the problem that concentricity testing and insulation withstand voltage testing are independent processes that require manual operation, resulting in low production efficiency.

[0004] To solve the above-mentioned technical problems, the present invention provides a technical solution as follows: a multi-functional testing device for motor housing, comprising a workbench, a multi-joint manipulator, an insulation withstand voltage testing mechanism, and a concentricity testing mechanism, characterized in that: the multi-joint manipulator, the insulation withstand voltage testing mechanism, and the concentricity testing mechanism are all disposed on the workbench, and the insulation withstand voltage testing mechanism is disposed on one side of the concentricity testing mechanism; The concentricity detection mechanism includes a base, a limiting post, an annular lifting plate, and a distance sensor. The base is mounted on a workbench via an insulating pad and has an annular protrusion. The limiting post is mounted on the base, and the annular lifting plate is fitted onto the limiting post. The annular protrusion, the limiting post, and the annular lifting plate are coaxial. The outer diameter of the limiting post matches the inner diameter of the excitation coil in the motor housing, and the inner diameter of the annular protrusion matches the outer diameter of the motor housing. The inner diameter of the annular lifting plate is larger than the outer diameter of the limiting post, and the outer diameter of the annular lifting plate is smaller than the inner diameter of the annular protrusion. A groove is provided on one side of the annular protrusion, and the distance sensor is mounted in the groove via a mounting bracket. The insulation withstand voltage testing mechanism includes a support base, a telescopic rotary cylinder, and an insulation withstand voltage tester. The telescopic rotary cylinder is mounted on the workbench via the support base. A testing arm is mounted on the piston rod of the telescopic rotary cylinder. A positive probe electrically connected to the insulation withstand voltage tester is mounted at the end of the testing arm. A negative probe electrically connected to the insulation withstand voltage tester is mounted on the base. The multi-joint manipulator is used to place the motor housing onto and remove it from the annular lifting plate using grippers at its ends. The worktable is equipped with positioning sensors to detect the placement position of the motor housing.

[0005] Furthermore, the annular lifting plate is connected to one end of the connecting rod, and the other end of the connecting rod passes through the base and the worktable and is connected to the insulating lifting plate located under the worktable. The insulating lifting plate is connected to the lifting cylinder.

[0006] Furthermore, the inner circle of the annular lifting plate is provided with a coaxial conical protrusion on its upper side.

[0007] Furthermore, the piston rod of the telescopic rotary cylinder can rotate and extend and retract vertically at the same time, and the detection arm is an insulated arm.

[0008] Furthermore, an insulating pad is provided between the mounting bracket and the base.

[0009] Furthermore, a conveyor belt is provided on one side of the workbench to transfer the motor housing containing the excitation coil, and a finished product table is provided on the other side of the workbench for placing the motor housing after testing.

[0010] Furthermore, the finished product platform is provided with different placement areas for placing motor housings with different test results after testing, and a recording sensor is provided at each placement area.

[0011] The beneficial effects of this utility model are as follows: 1. This application integrates concentricity testing and insulation withstand voltage testing into one process. The motor housing does not need to be transferred between the two processes. A multi-joint robotic arm is used to transfer and pick up the motor housing. No human operation is required throughout the process, which reduces the labor intensity of personnel and has a high degree of automation.

[0012] 2. In this application, the annular protrusion, the limiting post, and the annular lifting plate are coaxial. The annular lifting plate also has a conical protrusion. When the multi-joint robot places the motor housing on the annular lifting plate, the motor housing automatically moves to align with the annular lifting plate under the action of the conical protrusion. As the motor housing descends with the annular lifting plate, the annular excitation coil inside the motor housing should be on the limiting post, and the motor housing should be embedded in the annular protrusion. If the motor housing is deformed or the excitation coil is not installed correctly, the excitation coil cannot be stably fitted onto the limiting post, or the motor housing may not be stably embedded in the annular protrusion, causing the motor housing to tilt. This results in a change in the distance between the motor housing and the distance sensor. The concentricity of the motor housing is tested using data from the distance sensor.

[0013] 3. Based on the completion of concentricity measurement, this application utilizes a telescopic rotary cylinder to rotate and descend the detection arm, pressing the positive probe onto the connection point of the excitation coil. This probe, in conjunction with the negative probe connected to the base, performs an insulation withstand voltage test on the excitation coil using an insulation withstand voltage tester. This ensures that the insulation withstand voltage of the excitation coil meets the standards, improving the yield rate and safety in subsequent use. Simultaneously, insulation treatment is applied to the detection arm, the base and the worktable, the mounting base and the base, and the insulating lifting plate to prevent accidents during the insulation withstand voltage test.

[0014] 4. The workbench of this application is equipped with a positioning sensor to detect the placement position of the motor housing. When the multi-joint robot grips the motor housing and moves it above the limit post, the positioning sensor will acquire the position of the feature point on the motor housing and determine whether the feature point position is consistent with the preset position. If they are inconsistent, the multi-joint robot will adjust the position so that the motor housing can be placed on the annular lifting plate and lowered and then placed on the limit post. The telescopic rotary cylinder will drive the detection arm to rotate and lower so that the positive probe is pressed on the connection point of the excitation coil, which will facilitate the subsequent insulation withstand voltage test.

[0015] 5. Conveyor belts and finished product tables can be set on both sides of the workbench of this application. The motor housings conveyed by the conveyor belt are placed on the annular lifting plate for inspection by a multi-joint robot. The inspected motor housings are then removed from the annular lifting plate and placed in different areas of the finished product table according to the inspection results. At the same time, the recording sensors in different areas record the placement of motor housings, realizing quantity statistics and verification with the inspection results. This prevents the multi-joint robot from placing the housings incorrectly, completes automatic classification, forms a streamlined operation, requires no human intervention, and improves production efficiency.

[0016] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only seven of the drawings in this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the concentricity testing mechanism.

[0020] Figure 3 This is a schematic diagram of the structure where the motor housing is placed on the annular lifting plate.

[0021] Figure 4 This is a schematic diagram of the structure for detecting the concentricity of the motor housing.

[0022] Figure 5 This is a schematic diagram of the structure for performing insulation withstand voltage testing on the motor housing.

[0023] Figure 6 This is a schematic diagram of the motor housing.

[0024] Figure 7 This is a schematic diagram of the structure of this application. Figure 2 .

[0025] In the diagram, 1-workbench, 2-multi-joint robotic arm, 3-insulation withstand voltage testing mechanism, 4-concentricity testing mechanism, 5-gripper, 6-conveyor belt, 7-finished product table, 8-recording sensor, 9-positioning sensor, 10-finished product table, 11-conveyor belt; 301-Support base, 302-Telescopic rotary cylinder, 303-Detection arm, 304-Positive probe, 305-Negative probe; 401-Base, 402-Limiting post, 403-Annular lifting plate, 404-Distance sensor, 405-Annular protrusion, 406-Groove, 407-Mounting bracket, 408-Connecting rod, 409-Insulated lifting plate, 410-Lifting cylinder, 411-Conical protrusion; A - Motor housing, B - Excitation coil, C - Magnetic pole hole, D - Wiring cable. Detailed Implementation

[0026] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0027] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information. Example 1

[0028] like Figures 1-7As shown, a multi-functional testing device for motor housing includes a workbench 1, a multi-joint manipulator 2, an insulation withstand voltage testing mechanism 3, and a concentricity testing mechanism 4. The multi-joint manipulator 2, the insulation withstand voltage testing mechanism 3, and the concentricity testing mechanism 4 are all mounted on the workbench 1, and the insulation withstand voltage testing mechanism 3 is mounted on one side of the concentricity testing mechanism 4.

[0029] The concentricity detection mechanism 4 includes a base 401, a limiting post 402, an annular lifting plate 403, and a distance sensor 404. The base 401 is mounted on the worktable 1 via an insulating pad. An annular protrusion 405 is provided on the base 401. The limiting post 402 is mounted on the base 401, and the annular lifting plate 403 is fitted onto the limiting post 402. The annular protrusion 405, the limiting post 402, and the annular lifting plate 403 are coaxial. The outer diameter of the limiting post 402 is the same as the inner diameter of the excitation coil B in the motor housing A. The inner diameter of the annular protrusion 405 matches the outer diameter of the motor housing A, facilitating the alignment detection of the excitation coil B fitted onto the limiting post 402 and the motor housing A embedded within the annular protrusion 405. The inner diameter of the annular lifting plate 403 is larger than the outer diameter of the limiting post 402, while the outer diameter of the annular lifting plate 403 is smaller than the inner diameter of the annular protrusion 405, allowing the annular lifting plate 403 to embed within the annular protrusion 405. A groove 406 is provided on one side of the annular protrusion 405, through which the distance sensor 404 is mounted. The mounting bracket 407 is located in the groove 406, and an insulating pad is provided between the mounting bracket 407 and the base 401. The annular lifting plate 403 is connected to one end of the connecting rod 408, and the other end of the connecting rod passes through the base 401 and the worktable 1 and is connected to the insulating lifting plate 409 located on the lower side of the worktable 1. The insulating lifting plate 409 is connected to the lifting cylinder 410. The annular protrusion 405, the limiting post 402, and the annular lifting plate 403 are coaxial. When the motor housing A descends with the annular lifting plate 403, the excitation coil B, which is annularly arranged inside the motor housing A, should be on the limiting post 402. The motor housing A is embedded in the annular protrusion 405. If the motor housing A is deformed or the excitation coil B is not installed properly, the excitation coil B cannot be stably fitted on the limiting post 402, or even the motor housing A cannot be stably embedded in the annular protrusion 405, causing the motor housing A to tilt. This causes a change in the distance between the motor housing A and the distance sensor 404. The concentricity of the motor housing A is tested by the data from the distance sensor 404.

[0030] The insulation withstand voltage testing mechanism includes a support base 301, a telescopic rotary cylinder 302, and an insulation withstand voltage tester. The telescopic rotary cylinder 302 is mounted on the workbench 1 via the support base 301. A testing arm 303 is mounted on the piston rod of the telescopic rotary cylinder 302. A positive probe 304, electrically connected to the insulation withstand voltage tester, is mounted at the end of the testing arm 303. A negative probe 305, electrically connected to the insulation withstand voltage tester, is mounted on the base 401. The piston rod of the telescopic rotary cylinder 302 can rotate and extend and retract vertically, and the testing arm 303 is an insulated arm. After completing the concentricity measurement... Based on this, the telescopic rotary cylinder 302 is activated, causing the detection arm 303 to rotate and descend simultaneously, pressing the positive probe 304 onto the connection point of the excitation coil B. This probe, in conjunction with the negative probe 305 connected to the base 401, performs an insulation withstand voltage test on the excitation coil B using an insulation withstand voltage tester. This ensures that the insulation withstand voltage of the excitation coil B meets the standards, improving the yield rate and safety in subsequent use. Simultaneously, the detection arm 303, the base 401 and the workbench 1, the mounting base and the base 401, and the insulating lifting plate 409 are all insulated to prevent accidents during the insulation withstand voltage test.

[0031] The multi-joint manipulator 2 is used to place the motor housing A onto the annular lifting plate 403 and remove it from the annular lifting plate 403 via the gripper 5 at its end. The worktable 1 is equipped with a positioning sensor 9 to detect the placement position of the motor housing A. When the multi-joint manipulator 2 moves the motor housing A above the limiting post 402, the positioning sensor 9 will acquire the position of the feature point on the motor housing A and determine whether the feature point position is consistent with the preset position. The feature point can be the position of the magnetic pole hole C, the position of the wiring cable D, etc. If they are inconsistent, the multi-joint manipulator 2 will adjust the position to facilitate the descent of the motor housing A onto the annular lifting plate 403 and its placement on the limiting post 402. Then, the telescopic rotary cylinder 302 will drive the detection arm 303 to rotate and descend, so that the positive probe 304 presses against the connection point of the excitation coil B, which will facilitate the subsequent insulation withstand voltage test. Example 2

[0032] like Figure 2-3 As shown, this embodiment is obtained by adding technical features such as the conical protrusion 411 on the basis of embodiment one. The other technical features are the same as those in embodiment one. The similarities will not be repeated here. The difference between this embodiment and embodiment one is that the inner circle of the annular lifting plate 403 is provided with a coaxial conical protrusion 411.

[0033] In this embodiment, the motor housing A is embedded in the annular protrusion 405. If the motor housing A is deformed or the excitation coil B is not installed properly, the excitation coil B cannot be stably fitted onto the limiting post 402, or even the motor housing A cannot be stably embedded in the annular protrusion 405, causing the motor housing A to tilt. This causes a change in the distance between the motor housing A and the distance sensor 404. The concentricity of the motor housing A is tested by the data from the distance sensor 404. Example 3

[0034] like Figure 6 As shown, this embodiment is obtained by adding technical features such as conveyor belt 116 and finished product table 107 based on embodiment 2. The remaining technical features are the same as those in embodiment 2, and the similarities will not be repeated here. The difference between this embodiment and embodiment 2 is that: a conveyor belt 116 is provided on one side of the workbench 1 to transfer the motor housing A containing the excitation coil B, and a finished product table 107 is provided on the other side of the workbench 1 for placing the motor housing A after testing; different placement areas are provided on the finished product table 107 for placing motor housing A with different test results after testing, and a recording sensor 8 is provided at each placement area.

[0035] In this embodiment, the conveyor belt 116 and the finished product table 107 are arranged on both sides of the workbench 1. The multi-joint robot 2 directly places the motor housing A conveyed by the conveyor belt 116 onto the annular lifting plate 403 for inspection, and then removes the inspected motor housing A from the annular lifting plate 403. According to the inspection results, the motor housing A is placed in different areas of the finished product table 107. At the same time, the recording sensors 8 in different areas record the placement of the motor housing A, realizing quantity statistics and verification with the inspection results. This prevents the multi-joint robot 2 from placing the motor housing A incorrectly, completes automatic classification, forms a streamlined operation, and requires no human intervention, thereby improving production efficiency.

[0036] The cables connected to the distance sensor 404, the recording sensor 8, the positive probe 304, the negative probe 305, and the positioning sensor 9 extend through the wire holes opened on the workbench and enter the underside of the workbench, and are electrically connected to the controller and the insulation withstand voltage tester located on the underside of the workbench; the telescopic rotary cylinder 302 and the lifting cylinder 410 are controlled by the controller.

[0037] The usage process of the overall technical solution formed by the above-mentioned technical features constitutes another technical solution disclosed in this application, which is: a detection and classification method for a multi-functional detection device for motor housing A. Step 1: Conveyor belt 116 transports the motor housing A containing the excitation coil B to one side of the workbench 1; Step 2: The multi-joint manipulator 2 uses the gripper 5 at the end to grip the motor housing A on the conveyor belt 116 and transfers the gripped motor housing A to the vertical position above the annular lifting plate 403. The positioning sensor adjusts the placement position of the motor housing A by rotating it according to the position of the feature points on the motor housing A through the multi-joint manipulator. Step 3: The multi-joint robotic arm 2 places the motor housing A on the annular lifting plate 403. When the motor housing A is placed on the annular lifting plate 403, under the action of the conical protrusion 411, the motor housing A automatically becomes coaxial with the annular lifting plate 403. Then, the lifting cylinder 410 moves to make the annular lifting plate 403 and the motor housing A move downward. The annular lifting plate 403 moves into the annular protrusion 405. The limiting post 402 extends into the excitation coil B that is arranged around the inside of the motor housing A. The outside of the motor housing A is embedded in the annular protrusion 405, so that the limiting shaft, the motor housing A and the annular protrusion 405 are on the same axis. Step 4: The distance sensor 404 detects whether the distance to the motor housing A is within the set threshold range. If yes, proceed to the next step; otherwise, the lifting cylinder 410 moves to make the annular lifting plate 403 drive the motor housing A to rise. The multi-joint joint holds the motor housing A through the gripper 5 and places the motor housing A in the concentricity abnormal area on the finished product table 107. Step 5: The telescopic rotary cylinder 302 is activated, causing the detection arm 303 to rotate and descend simultaneously, pressing the positive probe 304 onto the connection point of the excitation coil B. An insulation withstand voltage tester is used to perform an insulation withstand voltage test on the excitation coil B to determine if it meets the insulation withstand voltage standard. If yes, the positive probe 304 resets, and the lifting cylinder 410 is activated, causing the annular lifting plate 403 to rise, lifting the motor housing A. The multi-joint joint handle, through the gripper 5, holds the motor housing A and places it in the qualified area on the finished product table 107. If no, the positive probe 304 resets, and the lifting cylinder 410 is activated, causing the annular lifting plate 403 to rise, lifting the motor housing A. The multi-joint joint handle, through the gripper 5, holds the motor housing A and places it in the abnormal insulation withstand voltage area on the finished product table 107.

[0038] Step 6: Repeat the above steps.

[0039] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A multifunctional testing device for motor housings, comprising a worktable, a multi-joint robotic arm, an insulation withstand voltage testing mechanism, and a concentricity testing mechanism, characterized in that: The multi-joint robotic arm, the insulation withstand voltage testing mechanism, and the concentricity testing mechanism are all mounted on the workbench, with the insulation withstand voltage testing mechanism located on one side of the concentricity testing mechanism. The concentricity detection mechanism includes a base, a limiting post, an annular lifting plate, and a distance sensor. The base is mounted on a workbench via an insulating pad and has an annular protrusion. The limiting post is mounted on the base, and the annular lifting plate is fitted onto the limiting post. The annular protrusion, the limiting post, and the annular lifting plate are coaxial. The outer diameter of the limiting post matches the inner diameter of the excitation coil in the motor housing, and the inner diameter of the annular protrusion matches the outer diameter of the motor housing. The inner diameter of the annular lifting plate is larger than the outer diameter of the limiting post, and the outer diameter of the annular lifting plate is smaller than the inner diameter of the annular protrusion. A groove is provided on one side of the annular protrusion, and the distance sensor is mounted in the groove via a mounting bracket. The insulation withstand voltage testing mechanism includes a support base, a telescopic rotary cylinder, and an insulation withstand voltage tester. The telescopic rotary cylinder is mounted on the workbench via the support base. A testing arm is mounted on the piston rod of the telescopic rotary cylinder. A positive probe electrically connected to the insulation withstand voltage tester is mounted at the end of the testing arm. A negative probe electrically connected to the insulation withstand voltage tester is mounted on the base. The multi-joint manipulator is used to place the motor housing onto and remove it from the annular lifting plate using grippers at its ends. The worktable is equipped with positioning sensors to detect the placement position of the motor housing.

2. The multifunctional testing device for motor housing according to claim 1, characterized in that: The annular lifting plate is connected to one end of the connecting rod, and the other end of the connecting rod passes through the base and the workbench and is connected to the insulating lifting plate located under the workbench. The insulating lifting plate is connected to the lifting cylinder.

3. The multifunctional testing device for motor housing according to claim 1, characterized in that: The inner circle of the annular lifting plate has a coaxial conical protrusion on its upper side.

4. The multifunctional testing device for motor housing according to claim 1, characterized in that: The piston rod of the telescopic rotary cylinder can rotate and extend and retract vertically at the same time, and the detection arm is an insulated arm.

5. The multifunctional testing device for motor housing according to claim 1, characterized in that: An insulating pad is provided between the mounting bracket and the base.

6. The multifunctional testing device for motor housing according to claim 1, characterized in that: One side of the workbench is equipped with a conveyor belt for transferring the motor housing containing the excitation coil, and the other side of the workbench is equipped with a finished product table for placing the motor housing after testing.

7. A multifunctional testing device for motor housing according to claim 6, characterized in that: The finished product platform is provided with different placement areas for placing motor housings with different test results after testing, and a recording sensor is provided at each placement area.

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