Detection equipment for new energy motor shaft
By integrating testing equipment and automated transfer mechanisms, the cumbersome process of traditional motor shaft testing has been solved, enabling efficient and accurate testing of motor shafts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-03
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional motor shaft inspection methods are decentralized, resulting in cumbersome inspection processes, increased working hours, and low inspection efficiency.
Design an integrated testing device, including feeding, first inspection, second inspection, transfer and discharge mechanisms, to achieve automated transfer of the motor shaft and integration of multiple inspections. Combine with pre-processing and correction components to improve testing accuracy and efficiency.
The inspection process was shortened, the inspection efficiency was improved, the impact of impurities on the inspection accuracy was reduced, and the inspection accuracy and posture correction were ensured, thus achieving efficient and accurate inspection of the motor shaft.
Smart Images
Figure CN121783067A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of testing equipment technology, and in particular to a testing device for the shaft of a new energy motor. Background Technology
[0002] As a core transmission component of new energy vehicle motors, the motor shaft is responsible for power transmission and torque bearing. Its structural precision and performance stability directly affect the power output efficiency, driving safety, and range of new energy vehicles. Due to factors such as machine tool precision deviations during the machining process, motor shafts may experience dimensional deviations. If these issues are not addressed in time and the motor shaft proceeds directly into the assembly stage, it can easily lead to abnormal noises, excessive bearing wear, or even motor burnout during operation. Therefore, motor shafts must undergo testing before formal assembly to ensure they meet design requirements.
[0003] Currently, the inspection of motor shafts mainly includes bearing end inspection, coaxiality inspection, and keyway parameter inspection. Bearing end inspection primarily involves checking the outer diameter accuracy and roundness of the bearing mounting surface to ensure that the fit clearance with the bearing inner ring meets assembly requirements. It also requires checking the end face runout to prevent uneven bearing stress after assembly due to end face tilt. Coaxiality inspection verifies the degree of coincidence between the center lines of each key cylindrical surface of the motor shaft and the reference axis to prevent insufficient concentricity during motor operation due to excessive coaxiality. Keyway parameter inspection checks the width and symmetry of the keyway to ensure the fit accuracy with the key block, guaranteeing the stability and reliability of power transmission. However, traditional testing methods typically employ decentralized testing equipment, requiring each test to be performed separately by a single device. This decentralized approach makes the testing process cumbersome and lengthy, necessitating operators to frequently move and clamp the motor shaft between different devices, significantly increasing testing time and reducing testing efficiency, thus presenting obvious shortcomings. Summary of the Invention
[0004] In order to achieve integrated testing of motor shafts and improve the testing efficiency of motor shafts, this application provides a testing device for new energy motor shafts.
[0005] The technical solution of the new energy motor shaft testing equipment provided in this application is as follows: A testing device for the shaft of a new energy motor includes: a testing box, with an inlet on one side and an outlet on the opposite side, and a platform inside the testing box; A feeding mechanism is provided on the side of the platform near the inlet. The feeding mechanism includes a feeding cylinder provided on the platform. The moving part of the feeding cylinder is provided with a feeding bin for supporting the motor shaft. The first detection mechanism is set on the platform and located on the side of the feeding mechanism away from the inlet. The first detection mechanism includes multiple axial runout detection units, radial runout detection units, and bearing end detection units. The axial runout detection units are used to detect the axial runout tolerance of the motor shaft, the radial runout detection units are used to detect the radial runout tolerance of the motor shaft, and the bearing end detection units are used to detect the bearing end diameter parameter. The second detection mechanism is set on the platform and located on the side of the first detection mechanism away from the feeding mechanism. The second detection mechanism includes multiple keyway detection units, which are used to detect keyway width parameters and symmetry. A transfer mechanism is mounted on the platform. The transfer mechanism includes a transfer frame with an X-axis transfer guide rail parallel to the length of the detection box. A Z-axis transfer cylinder is mounted on the moving part of the X-axis transfer guide rail, and a pneumatic gripper for clamping the motor shaft is mounted on the moving part of the Z-axis transfer cylinder. The discharge mechanism is located on the side of the platform near the outlet. The discharge mechanism includes a discharge cylinder located on the platform. The moving part of the discharge cylinder is provided with a discharge seat for supporting the motor shaft.
[0006] By adopting the above technical solution, workers or loading robots place the motor shaft to be tested inside the loading bin. The loading mechanism transports the loading bin to the end of the loading cylinder. The transfer mechanism transfers the motor shaft to be tested to the first testing mechanism, which completes the axial runout, radial runout, and diameter measurement of the motor shaft end. Then, the motor shaft is transferred to the second testing mechanism, which performs the width and symmetry measurement of the keyway of the motor shaft. After the testing is completed, the transfer mechanism transports the motor shaft to the unloading mechanism, which transports the motor shaft to the outside of the testing box. This achieves full-process testing of the motor shaft and integrates multiple test items of the motor shaft inside the testing box. This eliminates the need for manual transfer and clamping by workers, shortens the overall testing process, and improves the testing efficiency of the motor shaft.
[0007] Optionally, a pre-treatment component is provided at the end of the feeding cylinder. The pre-treatment component includes a tilting cylinder provided on the platform. The tilting part of the tilting cylinder is provided with a blocking block that cooperates with the open part of the feeding hopper. Both sides of the platform along the width direction are provided with avoidance cylinders. The piston rod of the avoidance cylinder is provided with an air nozzle. The air nozzle is connected to an air supply device. The outer surface of the feeding hopper is provided with a processing port that slides with the air nozzle.
[0008] By adopting the above technical solution, when the feeding bin moves to the tilting cylinder, the tilting part of the tilting cylinder drives the blocking block to rotate to the position of covering the feeding bin. At this time, a relatively closed pre-treatment space is formed inside the feeding bin. The piston rod of the avoidance cylinder extends synchronously, driving the air nozzle to extend into the feeding bin through the treatment port. The air supply device is activated to deliver high-pressure airflow to the air nozzle. The high-pressure airflow acts on the surface of the motor shaft to remove the attached impurities, thereby reducing the possibility of impurities affecting the subsequent detection accuracy. In this way, the pre-treatment of the motor shaft before detection is achieved, and the subsequent detection accuracy is improved.
[0009] Optionally, the platform is provided with lifting components and clamping components corresponding one-to-one with the first detection mechanism and the second detection mechanism; the lifting component includes a lifting cylinder disposed on the bottom surface of the platform, the piston rod of the lifting cylinder passes through the platform and is provided with a lifting seat; the clamping component includes clamping cylinders disposed opposite to each other along the width direction of the detection box, each clamping cylinder is provided with a clamping plate on its piston rod, and the opposing surfaces of the two clamping plates are provided with clamping cones that cooperate with the groove at the end of the motor shaft, and one of the clamping plates is provided with a rotating component that drives the clamping cones to rotate.
[0010] By adopting the above technical solution, when the transfer mechanism moves the motor shaft above the first or second detection mechanism, the piston rod of the lifting cylinder extends to drive the lifting seat to rise, thereby facilitating the receiving of the motor shaft below the transfer mechanism. When the lifting cylinder drives the motor shaft to descend to the detection height, the clamping cylinders on both sides drive the clamping plates to move towards the motor shaft, and the clamping cones are engaged in the grooves of the motor shaft. Through the cooperation between the clamping cones and the end grooves, the axial clamping and fixing of the motor shaft is achieved, ensuring the axial stability of the motor shaft during the detection process and preventing deviation during detection, thereby further improving the detection accuracy.
[0011] Optionally, the first detection mechanism includes a first driving member, and a plurality of axial runout detection units are disposed on the moving part of the first driving member. Each axial runout detection unit includes a first bracket, a first connecting block is slidably connected inside the first bracket, a first probe is disposed on the first connecting block, the first probe abuts against the end face of the motor shaft to be detected, a first sensor is disposed inside the first bracket, the detection end of the first sensor abuts against the first connecting block, a first reset cylinder and a first clamping spring are respectively disposed on the inner sidewall of the first bracket, the piston rod of the first reset cylinder is disposed on the first connecting block, the other end of the first clamping spring is disposed on the first connecting block, and the elastic force of the first clamping spring drives the first connecting block to move toward the end face to be detected.
[0012] By adopting the above technical solution, during the detection process, the first driving component drives multiple axial runout detection units to move to the designated detection position. Subsequently, the piston rods of multiple first reset cylinders retract synchronously, and the elastic force of the first clamping spring drives multiple first probes to synchronously abut against the end face to be detected. The rotating component starts and drives the motor shaft to rotate through the clamping cone. If there is an axial runout tolerance in the motor shaft, the first connecting block will be moved during the rotation of the motor shaft, overcoming the elastic force of the first clamping spring. The first sensor detects the displacement of the first connecting block and transmits it to the data analysis module, thus realizing the detection of the axial runout tolerance of the motor shaft.
[0013] Optionally, the first detection mechanism further includes a third support mounted on the platform, with a plurality of radial runout detection units mounted on the third support. Each radial runout detection unit includes a flexible frame, a second connecting block mounted on the flexible frame, a second probe mounted on the second connecting block, and the second probe abutting against the arc surface of the motor shaft. The flexible frame is equipped with a second sensor, a second reset cylinder, and a second clamping spring. The detection end of the second sensor faces the flexible frame, the piston rod of the second reset cylinder is mounted on the side wall of the flexible frame near the motor shaft, and the elastic force of the second clamping spring drives the flexible frame to move toward the motor shaft.
[0014] By adopting the above technical solution, during the detection process, the piston rods of multiple second reset cylinders retract synchronously, and the elastic force of the second clamping spring drives multiple second probes to synchronously abut against the outer surface of the motor shaft's arc surface. If the motor shaft has a radial runout tolerance, the elastic force of the second clamping spring will be overcome during the rotation of the motor shaft, causing the flexible frame to generate elastic micro-deformation away from the motor shaft. This allows the second sensor to detect the corresponding radial displacement and transmit it to the data analysis module. The data analysis module calculates the radial runout tolerance detection of the motor shaft, thus realizing the radial runout tolerance detection of the motor shaft.
[0015] Optionally, the second detection mechanism includes a second driving member disposed opposite to it. A fourth bracket is provided on the moving part of the second driving member. A plurality of keyway detection parts are disposed on the fourth bracket. Each keyway detection part includes a mounting plate. Two detection arms are rotatably connected within the mounting plate. The two detection arms are disposed opposite to each other along the width direction of the keyway. A third sensor, a third reset cylinder, and a third clamping spring are disposed within the mounting plate, each corresponding to one of the two detection arms. The detection end of the third sensor faces the tail of the detection arm. The piston rod of the third reset cylinder faces the detection arm. One end of the third clamping spring is disposed on the mounting plate, and the other end is disposed on the detection arm. The elastic force of the third spring drives the detection ends of the two detection arms to move away from each other. Two reference sensors are provided at both ends of each fourth bracket along the axial direction of the motor shaft. The two reference sensors are disposed opposite to each other in the vertical direction and abut against the outer surface of the bearing end of the motor shaft.
[0016] By adopting the above technical solution, the second driving component drives both fourth supports to move towards the motor shaft. When the detection ends of the two detection arms move into the keyway, the reference sensor abuts against the outer end face of the motor shaft. At this time, the piston rod of the third reset cylinder retracts, and the third clamping spring releases its elastic force to push the detection ends of the two detection arms to open outward along the width direction of the keyway, abutting against the two side walls of the keyway respectively. The position information of the two side walls of the keyway is transmitted through the lever structure of the detection arms, causing the ends of the detection arms away from the detection ends to generate corresponding swing displacements. The third sensor collects the swing displacement signals of the two sets of detection arms and transmits the displacement data to the data analysis module, thus realizing the measurement of the keyway width. At the same time, during the opening process of the detection arms, if there is a symmetry deviation between the two side walls of the keyway and the reference axis, the swing displacement generated by the two detection arms will form a numerical difference. The data analysis module combines the reference axis of the motor shaft obtained by the reference sensor to calculate the displacement difference of the two detection arms, obtains the symmetry error of the keyway relative to the reference axis of the motor shaft, and completes the detection of the keyway symmetry.
[0017] Optionally, one of the fourth brackets is provided with a correction component, the correction component including a correction sensor, the detection end of the correction sensor facing a preset position of the keyway of the motor shaft, the fourth bracket is provided with a correction cylinder, the piston rod of the correction cylinder facing the preset position of the keyway and provided with a correction rod, the end of the correction rod being an arc shape adapted to the keyway.
[0018] By adopting the above technical solution, during the process of the lifting seat driving the motor shaft to descend, if the photoelectric sensor detects that the keyway of the motor shaft deviates from the preset rotation position, the clamping assembly clamps the motor shaft, and the rotating component drives the clamping cone to rotate, thereby driving the motor shaft to rotate. During the rotation of the motor shaft, the keyway of the motor shaft gradually approaches the preset detection position. When the photoelectric sensor detects that the keyway is close to the preset position, the rotating component closes, and the correction cylinder drives the correction rod to extend radially along the motor shaft. The arc surface at the end of the correction rod is in close contact with the outer surface of the motor shaft. As the correction cylinder continues to push, the correction rod performs a slight angle correction on the motor shaft through the guiding effect of the end face, eliminating the residual angle deviation, and finally inserts into the keyway to limit the detection posture of the motor shaft, ensuring the smooth detection of the subsequent second detection mechanism.
[0019] Optionally, a waste conveyor belt is provided between the second detection mechanism and the discharge mechanism on the platform. The waste conveyor belt is arranged parallel to the width direction of the detection box, and a waste port is opened on the outer surface of the detection box for the unqualified motor shaft to pass through.
[0020] By adopting the above technical solution, the waste conveyor belt transports the unqualified motor shafts to the waste inlet, thus realizing the automatic sorting of unqualified products and further improving the detection efficiency of motor shafts.
[0021] In summary, this application includes at least one of the following beneficial technical effects: This application integrates multiple inspections of the motor shaft into the inspection box by setting up a feeding mechanism, a first inspection mechanism, a second inspection mechanism, a waste conveyor belt, and an unloading mechanism. The motor shaft is automatically transferred by a transfer mechanism, so that the entire inspection process does not require manual transfer and clamping by workers, shortening the overall inspection process and thus improving the inspection efficiency of the motor shaft. This application sets up a pretreatment component. Before the motor shaft is inspected, the pretreatment component uses high-pressure airflow to blow away the outer surface of the motor shaft, thereby removing the impurities remaining on the motor shaft surface from the motor shaft, reducing the possibility of impurity residue affecting the inspection accuracy, and thus improving the inspection accuracy. This application incorporates a correction component that corrects the posture of the motor shaft before the second inspection mechanism performs its inspection, ensuring that the keyway of the motor shaft is aligned with a preset position. This ensures the smooth operation of the keyway inspection by the second inspection mechanism. Attached Figure Description
[0022] Figure 1 This is a structural diagram of this application.
[0023] Figure 2 This is a schematic diagram of the internal structure of the detection box in an embodiment of this application.
[0024] Figure 3This is a schematic diagram of the feeding mechanism in the embodiments of this application.
[0025] Figure 4 This is a schematic diagram of the structure of the first detection mechanism in the embodiments of this application.
[0026] Figure 5 This is a schematic diagram of the axial runout detection unit in an embodiment of this application.
[0027] Figure 6 This is a cross-sectional view of the first bracket in the embodiment of this application.
[0028] Figure 7 This is a schematic diagram of the radial runout detection unit in an embodiment of this application.
[0029] Figure 8 This is a schematic diagram of the structure of the second testing mechanism in the embodiments of this application.
[0030] Figure 9 This is a schematic diagram of the structure of the correction component in the embodiments of this application.
[0031] Figure 10 This is a schematic diagram of the keyway detection unit in an embodiment of this application.
[0032] Figure 11 This is a cross-sectional view of the fourth bracket and mounting plate in the embodiments of this application.
[0033] Figure 12 This is a schematic diagram of the material discharge mechanism in the embodiments of this application.
[0034] Explanation of reference numerals in the attached drawings: 1. Detection box; 101. Outlet; 102. Waste outlet; 103. Platform; 2. Feeding mechanism; 21. Feeding cylinder; 22. Feeding bin; 221. Clearance groove; 222. Processing port; 23. Pre-treatment component; 231. Tilting cylinder; 232. Blocking block; 233. Clearance cylinder; 234. Nozzle; 3. First detection mechanism; 31. First driving component; 32. Axial runout detection unit; 321. First bracket; 322. First connecting block; 3 23. First probe; 324. First sensor; 325. First reset cylinder; 326. First clamping spring; 33. Bearing end detection unit; 331. Second bracket; 332. Diameter probe; 34. Radial runout detection unit; 341. Third bracket; 342. Flexible frame; 3421. First substrate; 3422. Second substrate; 3423. Metal sheet; 3424. First vertical plate; 3425. Second vertical plate; 343. Second connecting block; 344. Second probe 345. Second sensor; 346. Second reset cylinder; 347. Second clamping spring; 4. Second detection mechanism; 41. Second drive component; 42. Fourth bracket; 43. Correction assembly; 431. Correction cylinder; 432. Correction rod; 44. Keyway detection unit; 441. Mounting plate; 442. Detection arm; 443. Third sensor; 444. Third reset cylinder; 445. Third clamping spring; 446. Reference sensor; 5. Waste conveyor belt; 6. Discharge Mechanism; 61. Discharge cylinder; 62. Discharge seat; 7. Transfer mechanism; 71. Transfer frame; 72. X-axis transfer guide rail; 73. Z-axis transfer cylinder; 74. Pneumatic gripper; 8. Main control platform; 9. Material detection probe; 10. Lifting assembly; 1001. Lifting cylinder; 1002. Lifting seat; 11. Clamping assembly; 111. Clamping cylinder; 112. Clamping plate; 113. Clamping cone; 114. Rotating component; 12. First transfer platform; 13. Second transfer platform. Detailed Implementation
[0035] The following is in conjunction with the appendix Figure 1-12 This application will be described in further detail.
[0036] This application discloses a testing device for the shaft of a new energy motor.
[0037] Reference Figure 1 and Figure 2A new energy motor shaft testing device includes a testing box 1. The testing box 1 has an inlet (not shown in the figure) on one side for the motor shaft to be tested to pass through, and an outlet 101 on the opposite side for qualified motor shafts to pass through. The outer surface has a waste port 102 for unqualified motor shafts to pass through. A platform 103 is installed inside the testing box 1. The platform 103 is arranged in sequence along the direction from the inlet to the outlet 101, including a feeding mechanism 2, a first testing mechanism 3, a second testing mechanism 4, a waste conveyor belt 5, and a discharge mechanism 6. The waste conveyor belt 5 is arranged parallel to the width direction of the testing box 1 and its end is connected to the waste port 102. A transfer mechanism 7 for transferring motor shafts is arranged between the feeding mechanism 2 and the discharge mechanism 6 on the platform 103.
[0038] Reference Figure 1 and Figure 2 The main control platform 8103 is mounted on the outside of the detection box 1 via a cantilever. The main control platform 8103 integrates a data processing module (not shown in the figure) and a control module (not shown in the figure). The data processing module analyzes the detection results of the first detection mechanism 3 and the second detection mechanism 4. The control module controls the motion of the feeding mechanism 2, the first detection mechanism 3, the second detection mechanism 4, the waste conveyor belt 5, the discharge mechanism 6, and the transfer mechanism 7. A display screen for displaying detection information is installed on the main control platform 8103.
[0039] The material to be tested is conveyed to the transfer mechanism 7 via the feeding mechanism 2. The transfer mechanism 7 transfers the motor shaft to the first testing mechanism 3, where the axial runout, radial runout, and shaft end diameter of the motor shaft are measured. The motor shaft is then transferred to the second testing mechanism 4, where the width and symmetry of the keyway are measured. The data processing module analyzes and processes the test data and determines its pass / fail status. Passing motor shafts are transferred by the transfer mechanism 7 to the discharge mechanism 6, where they are discharged in an orderly manner via the outlet 101. Unqualified motor shafts are transferred by the transfer mechanism 7 to the waste conveyor belt 5, and finally discharged as waste through the waste outlet 102. This testing equipment integrates multiple tests for the motor shaft into the testing chamber 1 and automatically transfers the motor shaft via the transfer mechanism 7. This eliminates the need for manual transfer and clamping by workers, shortening the overall testing process and improving the efficiency of motor shaft testing.
[0040] Reference Figure 2 and Figure 3The feeding mechanism 2 includes a feeding cylinder 21 arranged along the conveying direction of the motor shaft. The feeding cylinder 21 is located inside the detection box 1 near the inlet. An open feeding bin 22 is installed on the moving part of the feeding cylinder 21. A V-shaped seat (not shown in the figure) for supporting the motor shaft is installed inside the feeding bin 22. A material detection probe 9 is installed on the platform 103 at the starting end of the feeding cylinder 21. Two material detection probes are arranged opposite each other along the axis of the motor shaft. An avoidance groove 221 is opened on the outer surface of the feeding bin 22 to allow the detection beam of the material detection probe to pass through. In this embodiment, the material detection probe is a photoelectric sensor. The detection beam emitted by the material detection probe passes through the avoidance groove 221 to detect whether a motor shaft is placed inside the feeding bin 22.
[0041] Reference Figure 2 and Figure 3 A pre-treatment component 23 is provided at the end of the feeding cylinder 21. The pre-treatment component 23 includes a tilting cylinder 231 installed on the surface of the platform 103. A blocking block 232 that cooperates with the open part of the feeding bin 22 is installed on the tilting part of the tilting cylinder 231. It should be noted that when the feeding bin 22 has not reached the end, the tilting cylinder 231 drives the blocking cover to rotate to a vertical state. At this time, the bottom surface of the blocking plate is higher than the top surface of the feeding bin 22, so that the blocking cover does not interfere with the movement path of the feeding bin 22. Both sides of the platform 103 located on the axial direction of the motor shaft are equipped with avoidance cylinders 233. An air nozzle 234 that communicates with the air supply device is installed on the piston rod of the avoidance cylinder 233. A processing port 222 that slides with the air nozzle 234 is opened on the outer surface of the feeding bin 22.
[0042] During testing, the worker or the feeding robot places the motor shaft to be tested on the V-shaped seat in the feeding bin 22. The detection beam of the material detection probe is blocked by the motor shaft, and then a detection signal indicating that there is material in the feeding bin 22 is fed back to the control module. After receiving the signal, the control module triggers the feeding cylinder 21 to start. The moving part of the feeding cylinder 21 drives the feeding bin 22 to move to the pre-processing component 23. Next, the control system triggers the tilting cylinder 231 to rotate. The tilting part of the tilting cylinder 231 drives the blocking block 232 to rotate from a vertical state to a horizontal state until the blocking block 232 completely covers the open part of the feeding bin 22, so that a relatively closed pre-processing space is formed inside the feeding bin 22. Immediately afterwards, the control module drives the piston rods of the two side clearance cylinders 233 to extend synchronously, driving the air nozzle 234 to extend into the feeding bin 22 through the processing port 222. The air supply device is activated to deliver high-pressure airflow to the air nozzle 234. The high-pressure airflow acts on the surface of the motor shaft to remove the attached impurities, thereby reducing the possibility that impurities will affect the accuracy of subsequent detection. After the high-pressure airflow has cleaned for the preset time, the air supply device stops supplying air. Then, the flip cylinder 231 drives the blocking block 232 to flip from the horizontal state back to the vertical state, releasing the cover on the open part of the feeding bin 22. This completes the entire process of feeding and pre-processing the motor shaft. At this time, the motor shaft in the feeding bin 22 is in the state of waiting to be tested. Reference Figure 2 and Figure 4 The transfer mechanism 7 includes a transfer frame 71 mounted on the surface of the platform 103. An X-axis transfer guide rail 72 is mounted on the top of the transfer frame 71. A Z-axis transfer cylinder 73 is mounted on the moving part of the X-axis transfer guide rail 72. A pneumatic gripper 74 for clamping the motor shaft is mounted on the moving part of the Z-axis transfer cylinder 73. Lifting components 10 are installed on the platform 103 at the positions of the first detection mechanism 3 and the second detection mechanism 4. The lifting components 10 include a lifting cylinder 1001 mounted on the bottom of the platform 103. The piston rod of the lifting cylinder 1001 passes through the platform 103 and is fixedly connected to a lifting seat 1002.
[0043] Reference Figure 2 and Figure 4 After the motor shaft to be tested has undergone pretreatment, the X-axis transfer guide 72 drives the Z-axis transfer cylinder 73 to move to the loading bin 22. The Z-axis transfer cylinder 73 drives the pneumatic gripper 74 to move down into the loading bin 22. The pneumatic gripper 74 clamps the motor shaft. After clamping in place, the piston rod of the Z-axis transfer cylinder 73 retracts, causing the motor shaft to disengage from the loading bin 22. Then, the X-axis transfer guide 72 drives the Z-axis transfer cylinder 73 to move toward the first detection mechanism 3. During this process, the clearance cylinders 233 on both sides drive the air nozzles 234 to exit from the loading bin 22 and reset to the initial position. The loading cylinder 21 drives the loading bin 22 to move toward the inlet to the initial position, thereby ensuring that the loading bin 22 can receive subsequent motor shafts. When the motor shaft on the Z-axis transfer cylinder 73 is moved above the lifting seat 1002 corresponding to the first detection mechanism 3, the lifting cylinder 1001 drives the lifting seat 1002 to move up to the preset material bearing height. The piston rod of the Z-axis transfer cylinder 73 extends down again, so that the motor shaft is placed on the support surface of the lifting seat 1002. The pneumatic gripper 74 then releases the motor shaft. Finally, the piston rod of the Z-axis transfer cylinder 73 retracts upward to reset, and the lifting cylinder 1001 drives the lifting seat 1002 to move down to the detection height, so as to avoid interference with subsequent actions. Reference Figure 4Platform 103 is equipped with a material detection probe 9 and a clamping assembly 11 at the positions of the first detection mechanism 3 and the second detection mechanism 4. The control module controls the operation of the clamping assembly 11 based on the detection results of the material detection probe. The clamping assembly 11 includes clamping cylinders 111 arranged opposite each other along the axis of the motor shaft. Each clamping cylinder 111 has a clamping plate 112 fixedly connected to its piston rod. Platform 103 is equipped with a guide rail along its width. Both clamping plates 112 are slidably connected to the guide rail. The opposing surfaces of the two clamping plates 112 are equipped with clamping cones 113 that mate with the grooves at the ends of the motor shaft. The clamping cone 113 near the transfer frame 71 is rotatably connected to the inside of the clamping plate 112. Platform 103 is equipped with a rotating component 114 that drives the clamping cone 113 to rotate. The rotating component 114 can be a direct drive motor or an indirect drive motor as in the prior art. It belongs to the prior art in the field of rotating equipment and will not be described in detail in this embodiment.
[0044] Reference Figure 4 , Figure 5 and Figure 6 The first detection mechanism 3 includes a first driving member 31 mounted on the platform 103. The first driving member 31 has a range of motion in the X and Z axes. Multiple axial runout detection units 32 are mounted on the moving part of the first driving member 31. Specifically, each axial runout detection unit 32 includes a first bracket 321. A first connecting block 322 is slidably connected inside the first bracket 321 along the motor shaft axis. A first probe 323 is mounted on the first connecting block 322 and abuts against the end face of the motor shaft. The first bracket 321 contains... The first sensor 324 is installed on the first bracket 321. The detection end of the first sensor 324 abuts against the first connecting block 322. The first bracket 321 is equipped with a first reset cylinder 325 and a first clamping spring 326 on its inner sidewall. The piston rod of the first reset cylinder 325 is connected to the first connecting block 322. One end of the first clamping spring 326 is fixedly connected to the inner sidewall of the first bracket 321, and the other end is fixedly connected to the first connecting block 322. The elastic force of the first clamping spring 326 drives the first connecting block 322 to move toward the end face to be detected.
[0045] Reference Figure 4 and Figure 7 The second detection mechanism 4 also includes a bearing end detection unit 33. The bearing end detection unit 33 is packaged and installed on a guide rail with multiple second brackets 331. In this embodiment, there are three second brackets 331, all of which are located at the bearings at both ends of the motor shaft. Each second bracket 331 is equipped with a diameter probe 332 on both radial sides of the motor shaft. The diameter probes 332 abut against the outer surface of the motor shaft. The diameter probes 332 on the same second bracket 331 are symmetrical about the axis of the motor shaft. The principle of measuring the diameter of the motor shaft by the diameter probes 332 is the prior art and will not be described in detail in this embodiment.
[0046] Reference Figure 4 and Figure 7 The second detection mechanism 4 also includes a radial runout detection unit 34. The radial runout detection unit 34 includes a plurality of third supports 341 mounted on the guide rail. In this embodiment, there are three third supports 341, all of which are located along the length of the motor shaft. Each third support 341 is equipped with a flexible frame 342 on both radial sides of the motor shaft. The flexible frame 342 includes a first substrate 3421 arranged opposite to each other in the vertical direction and a second substrate 3422 arranged opposite to each other in the horizontal direction. Adjacent first substrates 3421 and second substrates 3422 are connected by a metal sheet 3423. This enables the flexible frame 342 to have the ability to elastically deform along the radial direction of the motor shaft and to generate adaptive micro-deformation with the radial runout of the motor shaft.
[0047] Reference Figure 4 and Figure 7 A first vertical plate 3424 is mounted on the upper first substrate 3421, and a second vertical plate 3425 is mounted on the lower first substrate 3421. The second vertical plate 3425 is located on the side of the first vertical plate 3424 near the motor shaft. A second connecting block 343 is mounted on the top of the flexible frame 342. A second probe 344 for detection is mounted on the second connecting block 343. The second probe 344 abuts against the arc surface of the motor shaft. A second sensor 345 is mounted on the flexible frame 342. The detection end of the second sensor 345 passes through the first vertical plate 3424 and the second vertical plate 3425 and is connected to the second substrate 3422 near the motor shaft. A second reset cylinder 346 and a second clamping spring 347 are mounted on the first vertical plate 3424. The piston rod of the second reset cylinder 346 and the other end of the second clamping spring 347 are both connected to the second vertical plate 3425. The elastic force of the second clamping spring 347 drives the second vertical plate 3425 to move toward the outer surface of the motor shaft.
[0048] During testing, the first driving member 31 first causes multiple axial runout detection units 32 to move along the X-axis toward the motor shaft, and then drives them to descend along the Z-axis, causing multiple first probes 323 to abut against the end face to be tested. When the motor shaft to be tested descends to the testing height, the material detection probe at the first testing mechanism 3 detects the presence of the motor shaft. The control module controls the piston rods of the two clamping cylinders 111 at the first testing mechanism 3 to extend synchronously, driving the two clamping plates 112 to move closer to each other until the clamping cone 113 is inserted into the groove of the motor shaft. Through the cooperation between the clamping cone 113 and the end groove, the axial clamping and fixing of the motor shaft is achieved, ensuring the axial stability of the motor shaft during the testing process and preventing deviation during testing. After clamping, the diameter probe 332 abuts against the outer surface of the motor shaft to detect the diameter of the bearing end. The detection data of the four diameter probes 332 are transmitted to the data analysis module. After calculation and processing, the coaxiality of the motor shaft can be obtained. The first drive member 31 first causes multiple axial runout detection parts 32 to move along the X-axis toward the motor shaft, and then drives them to descend along the Z-axis, causing multiple first probes 323 to move to the detection height. At this time, the piston rods of multiple first reset cylinders 325 retract synchronously, and the elastic force of the first clamping spring 326 drives multiple first probes 323 to abut against the end face to be detected synchronously. The piston rods of multiple second reset cylinders 346 retract synchronously, and the elastic force of the second clamping spring 347 drives multiple second probes 344 to abut against the outer surface of the arc surface of the motor shaft synchronously. After the detection ends of the first detection component are all in place, the rotating component 114 starts to drive the motor shaft to rotate through the clamping cone 113. If there is an axial runout tolerance in the motor shaft, the first connecting block 322 will move due to the elastic force of the first clamping spring 326 during the rotation of the motor shaft. The first sensor 324 detects the displacement of the first connecting block 322 and transmits it to the data analysis module. The data analysis module calculates the axial runout tolerance of the motor shaft. If there is a radial runout tolerance in the motor shaft, the second clamping spring 347 will be overcome during the rotation of the motor shaft, causing the flexible frame 342 to produce an elastic micro-deformation away from the motor shaft. The second sensor 345 detects the corresponding radial displacement and transmits it to the data analysis module. The data analysis module calculates the radial runout tolerance of the motor shaft.
[0049] Reference Figure 2 and Figure 8 Platform 103 is located between the first detection component and the second detection component and a first transfer table 12 is installed. After the first detection component completes the detection, the piston rods of the first reset cylinder 325 and the second reset cylinder 346 extend to drive the first probe 323 and the second probe 344 to disengage from the detection end. Then, the first drive member 31 drives multiple axial runout detection parts 32 to reset along the Z-axis and X-axis directions. The piston rods of the clamping cylinders 111 on both sides retract synchronously, driving the clamping cone 113 to disengage from the groove and release the clamping of the motor shaft. The piston rod of the lifting cylinder 1001 rises, pushing the lifting seat 1002 to drive the motor shaft to rise. If the material detection probe at the second detection mechanism 4 detects that the lifting seat 1002 is in a occupied state, the transfer mechanism 7 transfers the motor shaft to the first transfer platform 12. If the lifting seat 1002 is in an unloaded state, the transfer mechanism 7 transfers the motor shaft to the lifting seat 1002. Then, the lifting cylinder 1001 at the second detection mechanism 4 drives the motor shaft to descend to the area to be detected, and the clamping component 11 clamps the motor shaft.
[0050] Reference Figure 8 and Figure 9The second detection mechanism 4 includes a second driving member 41 arranged radially along the motor shaft. The second driving member 41 has a degree of movement in the X-axis direction. In this embodiment, the second driving member 41 is a linear cylinder. A fourth bracket 42 is mounted on the moving part of the second driving member 41. A correction component 43 is mounted on the fourth bracket 42 near the first detection mechanism 3. Specifically, the correction component 43 includes a correction sensor mounted on the fourth bracket 42. In this embodiment, the correction sensor is a photoelectric sensor (not shown in the figure) for detecting the keyway position. A correction cylinder 431 is mounted on the fourth bracket 42. The piston rod of the correction cylinder 431 is fixedly connected to a correction rod 432. The end of the correction rod 432 away from the correction cylinder 431 is an arc shape adapted to the keyway.
[0051] During the process of the lifting seat 1002 driving the motor shaft to descend, if the photoelectric sensor detects that the keyway of the motor shaft deviates from the preset rotation position, the clamping assembly 11 clamps the motor shaft, and the rotating component 114 drives the clamping cone 113 to rotate, thereby driving the motor shaft to rotate. During the rotation of the motor shaft, the keyway of the motor shaft gradually approaches the preset detection position. When the photoelectric sensor detects that the keyway is close to the preset position, the rotating component 114 closes, and the correction cylinder 431 drives the correction rod 432 to extend radially along the motor shaft. The arc surface at the end of the correction rod 432 is in close contact with the outer surface of the motor shaft. As the correction cylinder 431 continues to push, the correction rod 432 performs a slight angle correction on the motor shaft through the guiding effect of the end face, eliminates the residual angle deviation, and finally inserts into the keyway to limit the detection posture of the motor shaft, ensuring the smooth detection of the subsequent second detection mechanism 4.
[0052] Reference Figure 10 and Figure 11 Each of the two fourth brackets 42 has multiple keyway detection units 44 mounted on its opposite end faces. Specifically, each keyway detection unit 44 includes a mounting plate 441 mounted on the fourth bracket 42. Two detection arms 442 are rotatably connected inside the mounting plate 441. The two detection arms 442 are arranged opposite each other along the width direction of the keyway. The detection arms 442 are L-shaped and their hinge points with the mounting plate 441 are located at the bend. Inside the mounting plate 441, there are third sensors 443, third reset cylinders 444, and third clamping springs 445 that correspond one-to-one with the two detection arms 442. The detection end of the third sensor 443 faces the tail of the detection arm 442 away from the detection end. The piston rod of the third reset cylinder 444 faces the detection arm 442. One end of the third clamping spring 445 is connected to the mounting plate 441, and the other end is fixedly connected to the detection arm 442. The elastic force of the third spring drives the detection ends of the two detection arms 442 to move away from each other.
[0053] Reference Figure 10 and Figure 11Two reference sensors 446 are installed at both ends of the fourth bracket 42 near the discharge mechanism 6 along the motor shaft axis. In this embodiment, the reference sensors 446 are contact displacement sensors. The two reference sensors 446 are arranged opposite each other in the vertical direction and abut against the outer surface of the motor shaft bearing end. The symmetry of the keyway relative to the reference axis is detected by the measurement data of the two reference sensors 446.
[0054] After the correction is completed, the second drive unit 41 drives the two fourth supports 42 to move towards the direction of the motor shaft. When the detection ends of the two detection arms 442 move into the keyway, the reference sensor 446 abuts against the outer end face of the motor shaft. At this time, the piston rod of the third reset cylinder 444 retracts, and the third clamping spring 445 releases its elastic force to push the detection ends of the two detection arms 442 to open outward along the width direction of the keyway and abut against the two side walls of the keyway respectively. The position information of the two side walls of the keyway is transmitted through the lever structure of the detection arms 442, so that the end of the detection arm 442 away from the detection end produces a corresponding swing displacement. The third sensor 443 collects the swing displacement signals of the two sets of detection arms 442 and transmits the displacement data to the data analysis module, thus realizing the measurement of the keyway width. Meanwhile, during the opening of the detection arm 442, if there is a symmetry deviation between the two side walls of the keyway and the reference axis, the swing displacement generated by the two detection arms 442 will form a numerical difference. The data analysis module, combined with the motor shaft reference axis obtained by the reference sensor 446, calculates the displacement difference of the two detection arms 442 to obtain the symmetry error of the keyway relative to the motor shaft reference axis, and completes the detection and judgment of the keyway symmetry. In this way, the second detection mechanism 4 can realize the detection of the depth and symmetry of the keyway.
[0055] After the data acquisition is completed, the piston rod of the third reset cylinder 444 extends, overcoming the elastic force of the third clamping spring 445 to push the detection ends of the two detection arms 442 closer to each other and detach from the keyway sidewall; the second driving member 41 drives the two fourth brackets 42 to reset in the opposite direction along the X-axis, the reference sensor 446 separates from the bearing end of the motor shaft, and the keyway symmetry detection process is completed.
[0056] Reference Figure 2 and Figure 12 The platform 103 is located between the second detection component and the waste conveyor belt 5 and a second transfer station 13 is installed. The discharge mechanism 6 includes a discharge cylinder 61 arranged along the length of the platform 103. A discharge seat 62 is installed on the moving part of the discharge cylinder 61. Material detection probes 9 are installed at the beginning and end of the discharge cylinder 61 on the platform 103. The loading status of the discharge seat 62 is determined by the material detection probes.
[0057] After the motor shaft is inspected by the first inspection mechanism 3 and the second inspection mechanism 4, the clamping assembly 11 releases its grip on the motor shaft. The lifting cylinder 1001 drives the lifting seat 1002 to raise the motor shaft to the docking height adapted to the transfer mechanism 7. At this time, the data analysis module has completed the comprehensive detection result judgment of the axial runout, radial runout, keyway width and symmetry of the motor shaft. If the motor shaft is determined to be a qualified part and the discharge seat 62 is in an unloaded state, the transfer mechanism 7 transfers the motor shaft from the lifting seat 1002 at the second detection mechanism 4 to the discharge seat 62. The discharge cylinder 61 drives the discharge seat 62 to move, and the discharge seat 62 transports the qualified motor shaft to the outlet 101. If the discharge seat 62 is fully loaded, the transfer mechanism 7 places the motor shaft on the second transfer seat and temporarily stores the qualified motor shaft through the second transfer table 13. When the material detection probe detects that the discharge seat 62 has completed unloading and reset to the starting position of the discharge cylinder 61, the transfer mechanism 7 starts again and transfers the qualified motor shaft temporarily stored in the second transfer table 13 to the discharge seat 62. Then, the discharge cylinder 61 drives the discharge seat 62 to transport the motor shaft to the outlet 101, completing the temporary storage and discharge operation of qualified parts. If the motor shaft is determined to be a defective part, the transfer mechanism 7 places the motor shaft on the waste conveyor belt 5. The waste conveyor belt 5 transports the defective motor shaft along the width direction of the inspection box 1 and finally discharges it to the outside of the inspection box 1 through the waste port 102, thus completing the waste collection process for defective parts.
[0058] The implementation principle of the new energy motor shaft testing equipment in this application embodiment is as follows: The material to be tested is conveyed to the transfer mechanism 7 through the feeding mechanism 2. The transfer mechanism 7 transfers the motor shaft to be tested to the first testing mechanism 3. The first testing mechanism 3 completes the axial runout, radial runout, and diameter of the shaft end of the motor shaft. Then, the motor shaft is transferred to the second testing mechanism 4. The second testing mechanism 4 detects the width and symmetry of the keyway of the motor shaft. The data processing module analyzes and processes the test data and determines its passability. Qualified motor shafts are transferred to the discharge mechanism 6 by the transfer mechanism 7 and discharged in an orderly manner through the outlet 101. Unqualified motor shafts are transferred to the waste conveyor belt 5 by the transfer mechanism 7 and finally discharged as waste through the waste outlet 102. This testing equipment integrates multiple test contents of the motor shaft into the testing box 1 and automatically transfers the motor shaft through the transfer mechanism 7. This eliminates the need for manual transfer and clamping by workers, shortens the overall testing process, and improves the testing efficiency of the motor shaft.
[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A testing device for the shaft of a new energy motor, characterized in that, include: The test box (1) has an inlet on one side and an outlet (101) on the opposite side. The test box (1) is equipped with a platform (103). The feeding mechanism (2) is located on the side of the platform (103) near the inlet. The feeding mechanism (2) includes a feeding cylinder (21) located on the platform (103). The moving part of the feeding cylinder (21) is provided with a feeding bin (22) for carrying the motor shaft. The first detection mechanism (3) is set on the platform (103) and located on the side of the feeding mechanism (2) away from the inlet. The first detection mechanism (3) includes multiple axial runout detection units (32), radial runout detection units (34) and bearing end detection units (33). The axial runout detection units (32) are used to detect the axial runout tolerance of the motor shaft, the radial runout detection units (34) are used to detect the radial runout tolerance of the motor shaft, and the bearing end detection units (33) are used to detect the bearing end diameter parameter. The second detection mechanism (4) is set on the platform (103) and located on the side of the first detection mechanism (3) away from the feeding mechanism (2). The second detection mechanism (4) includes a plurality of keyway detection units (44), which are used to detect keyway width parameters and symmetry. A transfer mechanism (7) is mounted on the platform (103). The transfer mechanism (7) includes a transfer frame (71), on which an X-axis transfer guide rail (72) parallel to the length direction of the detection box (1) is mounted. A Z-axis transfer cylinder (73) is mounted on the moving part of the X-axis transfer guide rail (72), and a pneumatic gripper (74) for clamping the motor shaft is mounted on the moving part of the Z-axis transfer cylinder (73). The discharge mechanism (6) is located on the side of the platform (103) near the outlet (101). The discharge mechanism (6) includes a discharge cylinder (61) located on the platform (103). The moving part of the discharge cylinder (61) is provided with a discharge seat (62) for carrying the motor shaft.
2. The testing equipment for new energy motor shafts according to claim 1, characterized in that, A pretreatment component (23) is provided at the end of the feeding cylinder (21). The pretreatment component (23) includes a tilting cylinder (231) provided on the platform (103). A blocking block (232) that cooperates with the opening of the feeding bin (22) is provided on the tilting part of the tilting cylinder (231). A clearance cylinder (233) is provided on both sides of the platform (103) along the width direction. An air nozzle (234) is provided on the piston rod of the clearance cylinder (233). The air nozzle (234) is connected to the air supply device. A processing port (222) that slides with the air nozzle (234) is opened on the outer surface of the feeding bin (22).
3. The testing equipment for new energy motor shafts according to claim 1, characterized in that, The platform (103) is provided with a lifting assembly (10) and a clamping assembly (11) corresponding one-to-one with the first detection mechanism (3) and the second detection mechanism (4); the lifting assembly (10) includes a lifting cylinder (1001) disposed on the bottom surface of the platform (103), the piston rod of the lifting cylinder (1001) passes through the platform (103) and is provided with a lifting seat (1002); the clamping assembly (11) includes clamping cylinders (111) disposed opposite to each other along the width direction of the detection box (1), each clamping cylinder (111) is provided with a clamping plate (112) on its piston rod, and the opposing surfaces of the two clamping plates (112) are provided with clamping cones (113) that cooperate with the groove at the end of the motor shaft, and one of the clamping plates (112) is provided with a rotating component (114) that drives the clamping cones (113) to rotate.
4. The testing equipment for new energy motor shafts according to claim 1, characterized in that, The first detection mechanism (3) includes a first driving member (31), and a plurality of axial runout detection units (32) are disposed on the moving part of the first driving member (31). Each axial runout detection unit (32) includes a first bracket (321), a first connecting block (322) is slidably connected inside the first bracket (321), a first probe (323) is disposed on the first connecting block (322), and the first probe (323) abuts against the end face of the motor shaft to be detected. A first sensor (324) is disposed inside the first bracket (321). The detection end of the first sensor (324) abuts against the first connecting block (322). The first bracket (321) is respectively provided with a first reset cylinder (325) and a first clamping spring (326) on its inner sidewall. The piston rod of the first reset cylinder (325) is provided on the first connecting block (322), and the other end of the first clamping spring (326) is provided on the first connecting block (322). The elastic force of the first clamping spring (326) drives the first connecting block (322) to move toward the end face to be detected.
5. The testing equipment for new energy motor shafts according to claim 1, characterized in that, The first detection mechanism (3) further includes a third support (341) disposed on the platform (103), and a plurality of radial runout detection units (34) are disposed on the third support (341). The radial runout detection unit (34) includes a flexible frame (342), a second connecting block (343) is disposed on the flexible frame (342), a second probe (344) is disposed on the second connecting block (343), the second probe (344) abuts against the arc surface of the motor shaft, a second sensor (345), a second reset cylinder (346) and a second clamping spring (347) are disposed on the flexible frame (342), the detection end of the second sensor (345) faces the flexible frame (342), the piston rod of the second reset cylinder (346) is disposed on the side wall of the flexible frame (342) near the motor shaft, and the elastic force of the second clamping spring (347) drives the flexible frame (342) to move toward the motor shaft.
6. The testing equipment for new energy motor shafts according to claim 1, characterized in that, The second detection mechanism (4) includes a second driving member (41) arranged opposite to each other. A fourth bracket (42) is provided on the moving part of the second driving member (41). A plurality of keyway detection parts (44) are arranged on the fourth bracket (42). Each keyway detection part (44) includes a mounting plate (441). Two detection arms (442) are rotatably connected inside the mounting plate (441). The two detection arms (442) are arranged opposite to each other along the width direction of the keyway. A third sensor (443), a third reset cylinder (444), and a third clamping spring (445) corresponding to each of the two detection arms (442) are provided inside the mounting plate (441). 45), the detection end of the third sensor (443) faces the tail of the detection arm (442), the piston rod of the third reset cylinder (444) faces the detection arm (442), one end of the third clamping spring (445) is set on the mounting plate (441), and the other end is set on the detection arm (442). The elastic force of the third spring drives the detection ends of the two detection arms (442) to move away from each other. Each of the fourth brackets (42) is provided with two reference sensors (446) at both ends along the axial direction of the motor shaft. The two reference sensors (446) are arranged opposite each other in the vertical direction and abut against the outer surface of the bearing end of the motor shaft.
7. The testing equipment for new energy motor shafts according to claim 6, characterized in that, One of the fourth brackets (42) is provided with a correction component (43), the correction component (43) includes a correction sensor, the detection end of the correction sensor is oriented toward a preset position of the keyway of the motor shaft, the fourth bracket (42) is provided with a correction cylinder (431), the piston rod of the correction cylinder (431) is oriented toward the preset position of the keyway and is provided with a correction rod (432), the end of the correction rod (432) is in an arc shape adapted to the keyway.
8. The testing equipment for new energy motor shafts according to claim 1, characterized in that, The platform (103) is located between the second detection mechanism (4) and the discharge mechanism (6) and is provided with a waste conveyor belt (5). The waste conveyor belt (5) is arranged parallel to the width direction of the detection box (1). The outer surface of the detection box (1) is provided with a waste port (102) for the unqualified motor shaft to pass through.