Detection device for press-fitting angle of motor rotor commutator

Abstract

The invention discloses a device for detecting the press-fitting angle of a commutator of a motor rotor. The device comprises a workbench and a positioner used for observing the starting point position and the final point position of a first groove or a second groove in the rotor. The rotating mechanism is matched with the workbench; the angle sensing assembly is connected with the rotating mechanism; the supporting part is used for supporting the rotor and is matched with the rotating mechanism; the driving mechanism is used for driving the positioner to move, and the positioner is connected with the driving mechanism; when the first groove or the second groove in the rotor is detected, the rotor is matched with the supporting component, the driving mechanism drives the positioner to move, and after the positioning part on the positioner coincides with the starting point of the first groove or the second groove, the rotating mechanism is rotated to enable the terminal point of the first groove or the second groove to coincide with the positioning part on the positioner. The device can quickly detect the press-fitting angle of the motor rotor commutator beside a production line.

Description

Technical Field

[0001] The invention relates to the field of motor rotors, and in particular to a device for detecting the press-fitting angle of a motor rotor commutator. Background Art

[0002] The starting electronic rotor is usually composed of a rotor core, a winding, a rotating shaft, and a commutator. The winding is fixed to the rotor core, the rotating shaft passes through the rotor core and is connected to the rotor core, the commutator is connected to one end of the shaft, and a plurality of first grooves parallel to the axial direction of the rotor core are provided on the circumferential surface of the rotor core. These grooves are arranged at intervals along the circumference of the commutator. A plurality of second grooves parallel to the axial direction of the commutator are usually provided on the circumferential surface of the commutator. These second grooves are arranged at intervals along the circumference of the commutator.

[0003] The commutator and the rotating shaft are usually assembled by press-fitting. Usually, the first groove and the second groove are required to be 0±1° on the design drawing. After press-fitting, it is necessary to determine whether the positions of the first groove on the rotor core and the second groove on the commutator meet the requirements of the design drawing.

[0004] The existing angle detection device generally uses a universal display for detection, which requires the rotor to be sent from the production line to the laboratory, placed under a microscope, marked with the corresponding points on the product, and then the corresponding angle to be measured is calculated. The above operation method has the following shortcomings:

[0005] 1. It is difficult to send the product for inspection, and the procedures are complicated. The product needs to be sent to the laboratory for inspection, and the test cannot be completed immediately on the production line;

[0006] 2. The testing steps are complicated and the testing time is long. After the product is sent to the laboratory, the operator uses Wangongxian to check the product. A single test takes more than 10 minutes. Adding the time required for testing, the testing efficiency is not high.

[0007] In summary, the above method for testing products is not suitable for small batch sampling during mass production. Summary of the invention

[0008] The present invention provides a device for detecting the press-fitting angle of a motor rotor commutator. The present invention can be used to quickly detect the press-fitting angle of a motor rotor commutator beside a production line.

[0009] A detection device for the press-fitting angle of a motor rotor commutator comprises a workbench, a positioner for observing the starting and ending positions of a first groove or a second groove on a rotor, and further comprises:

[0010] A rotating mechanism, the rotating mechanism cooperates with the workbench;

[0011] An angle sensing component, the angle sensing component is connected to the rotating mechanism;

[0012] A supporting component for supporting the rotor, the supporting component cooperates with the rotating mechanism;

[0013] A driving mechanism for driving the positioner to move, the positioner being connected to the driving mechanism;

[0014] When inspecting the first groove or the second groove on the rotor, the rotor is matched with the supporting component, and the locator is moved by the driving mechanism so that the positioning part on the locator coincides with the starting point of the first groove or the second groove, and then the rotating mechanism is rotated so that the end point of the first groove or the second groove coincides with the positioning part on the locator.

[0015] Furthermore, the rotating mechanism includes a sleeve, a movable seat, and a connecting rod. A first through hole is provided on the workbench. The sleeve is fixed to the workbench and cooperates with the first through hole. A plug-in groove is provided at one end of the movable seat. The other end of the movable seat is fixed to one end of the connecting rod. The other end of the connecting rod passes through the sleeve and is connected to the angle sensor assembly.

[0016] Furthermore, the rotating mechanism also includes a first positioning pin, a second through hole is provided on the movable seat, and a first plug hole is provided on the workbench. After the first positioning pin cooperates with the second through hole and the first plug hole, the angle of the rotating mechanism is limited to the initial angle position.

[0017] Furthermore, the supporting component includes a connecting sleeve, a mounting plate, and a limiting component for circumferentially limiting the rotor. The mounting plate is fixed to the connecting sleeve, and the mounting plate is also fixed to the rotating mechanism. There are multiple limiting components and they are fixed to the connecting sleeve.

[0018] Furthermore, the rotating mechanism includes a second positioning pin, and a second plug hole is provided on the mounting plate. After the second positioning pin is matched with the second plug hole, the second positioning pin positions the supporting component.

[0019] Furthermore, the driving mechanism comprises:

[0020] a first driving unit for moving the positioner along the X direction of the workbench, wherein the first driving unit is fixed to the workbench;

[0021] a second driving unit for moving the positioner along the Z direction of the workbench, the second driving unit being fixed to the first driving unit;

[0022] The third driving unit is used to move the positioner along the Y direction of the workbench. The third driving unit is fixed to the second driving unit, and the positioner is fixed to the third driving unit.

[0023] Further, the first driving unit includes a first support, a first sliding seat, and a first rotating driving component for driving the first sliding seat to move along the X direction of the workbench. The first support is fixed to the workbench, the first sliding seat is slidingly matched with the first support, the first rotating driving component is rotatably matched with the first support, a first gear or a first friction wheel is fixed on the first rotating driving component, the first sliding seat is provided with a first rack or has a first friction surface, the first gear is meshed with the first rack, or the first friction wheel is matched with the first friction surface.

[0024] Furthermore, the second driving unit includes a second support, a second sliding seat, and a second rotating driving component for driving the second sliding seat to move along the Z direction of the workbench. The second support is fixed to the first driving unit, the second sliding seat is slidingly matched with the second support, the second rotating driving component is rotatingly matched with the second support, a second gear or a second friction wheel is fixed on the second rotating driving component, the second sliding seat is provided with a second rack or a second friction surface, the second gear is meshed with the second rack, or the second friction wheel is matched with the second friction surface.

[0025] Furthermore, the third driving unit includes a third support, a third sliding seat, and a third rotating driving component for driving the third sliding seat to move along the Y direction of the workbench. The third support is fixed to the second driving unit, the third sliding seat is slidingly matched with the third support, the third rotating driving component is rotatingly matched with the third support, a third gear or a third friction wheel is fixed on the third rotating driving component, the third sliding seat is provided with a third rack or a third friction surface, the third gear is meshed with the third rack, or the third friction wheel is matched with the third friction surface.

[0026] The beneficial effects of the present invention are as follows: the detection can be carried out quickly at the production line side, an optical microscope is used to focus on a certain position of the first groove or the second groove on the rotor, this position is set as the origin, the rotating mechanism drives the rotor to rotate to the next position, and the optical microscope is used again to confirm. The angle measurement sensor displays the rotation angle in real time, and the final displayed angle is the angle between the two product measurement positions. This method is flexible to use and has fast detection, and can check the angles between different positions on the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of a device for detecting the press-fit angle of a motor rotor commutator.

[0028] Figure 2 A cross-sectional view of a device for detecting the press-fit angle of a motor rotor commutator.

[0029] Figure 3 A three-dimensional diagram of the drive mechanism.

[0030] Markings in the attached drawings:

[0031] Workbench 1, first through hole 1a, first plug hole 1b, locator 2, rotating mechanism A, sleeve 3, movable seat 4, plug-in groove 4a, second through hole 4b, connecting rod 5, first locating pin 6, angle sensor component B, supporting component C, connecting sleeve 7, mounting plate 8, second plug hole 8a, limiting component 9, second locating pin 10, driving mechanism D, first support 11, first sliding seat 12, first rotation driving component 13, first friction wheel 14, second support 15, second sliding seat 16, second rotation driving component 17, third support 18, third sliding seat 19, third rotation driving component 20, angle sensor 21, mounting seat 22, connecting rod 23, first mounting block 24, first locking bolt 25. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the examples of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other implementation methods can be obtained according to the drawings in the specification without paying creative work, and these implementation methods are still within the protection scope of the claims of the present invention.

[0033] like Figures 1 to 3 The detection device for the press-fitting angle of the motor rotor commutator of the present invention includes a workbench 1, a positioner 2 for observing the starting and ending positions of the first groove or the second groove on the rotor, the positioner 2 preferably adopts an optical microscope, and also includes a rotating mechanism A, an angle sensor component B, a supporting component C, and a driving mechanism D. The following is a detailed description of each part and the relationship between them.

[0034] The rotating mechanism A cooperates with the workbench 1; the rotating mechanism A includes a sleeve 3, a movable seat 4, and a connecting rod 5. The workbench 1 is provided with a first through hole 1a. The sleeve 3 is fixed to the workbench 1 and cooperates with the first through hole 1a. The sleeve 3 passes through the first through hole 1a, and the sleeve 3 and the first through hole 1a are loosely matched. One end of the movable seat 4 is provided with a plug-in groove 4a, and the other end of the movable seat 4 is fixed to one end of the connecting rod 5. The connecting rod 5 and the sleeve 3 are loosely matched. The other end of the connecting rod 5 passes through the sleeve 3 and is connected to the angle sensor component B.

[0035] The rotating mechanism A also includes a first positioning pin 6, a second through hole 4b is provided on the movable seat 4, and a first plug hole 1b is provided on the workbench 1. After the first positioning pin 6 cooperates with the second through hole 4b and the first plug hole 1b, the angle of the rotating mechanism A is limited to the position of the initial angle. The first positioning pin 6 passes through the second through hole 4b and is loosely matched with the second through hole 4b. When the first positioning pin 6 is inserted into the first plug hole 1b, the first positioning pin 6 locks the workbench 1 and the movable seat 4 into one, so that the movable seat 4 cannot rotate relative to the workbench 1. Since the movable seat 4 is connected to the angle sensor component B through the connecting rod 5, the angle sensor component B cannot rotate at this time. When the angle sensor component B is in this position, the angle of the angle sensor component B returns to the position of the initial angle. In this embodiment, the initial angle is set to zero. When the first positioning pin 6 is separated from the first plug hole 1b, a torque is applied to the movable seat 4, so that the movable seat 4 can rotate relative to the workbench 1.

[0036] The angle sensing component B is connected to the rotating mechanism A. In this embodiment, the angle sensing component B includes an angle sensor 21, a mounting seat 22, and a connecting rod 23. The angle sensor 21 and the mounting seat 22 are located below the movable seat 4, the angle sensor 21 is connected to the connecting rod 5, the angle sensor 21 is connected to the mounting seat 22, the mounting seat 22 is connected to the connecting rod 23, and after the connecting rod 23 is connected to the workbench 1, the angle sensor 21 is suspended below the movable seat 4.

[0037] The support component C is used to support the rotor, and the support component C cooperates with the rotating mechanism A. The support component C includes a connecting sleeve 7, a mounting plate 8, and a limiting component 9 for circumferentially limiting the rotor. The connecting sleeve 7 is used for inserting the rotating shaft, and one end of the connecting sleeve 7 is inserted into the plug-in groove 4a. The mounting plate 8 is fixed to the connecting sleeve 7, and the mounting plate 8 is located on the circumferential surface of the connecting sleeve 7. The mounting plate 8 and the connecting sleeve 7 preferably adopt an integrally formed structure to ensure the stability and reliability of the structure. The mounting plate 8 is also fixed to the rotating mechanism A, and the mounting plate 8 is fixed to the movable seat 4 by screws. There are multiple limiting components 9, and multiple limiting components 9 are evenly distributed around the inner hole of the connecting sleeve 7. One end of these limiting components 9 is fixed to the connecting sleeve 7, and the other end of each limiting component 9 is a free end for inserting into the groove set on the axial end surface of the rotor core. Therefore, through the plug-in cooperation of multiple limiting components and the rotor core, the rotor cannot rotate relative to the support component C.

[0038] The rotating mechanism A includes a second positioning pin 10, one end of which is connected to the movable seat 4, and a second plug hole 8a is provided on the mounting plate 8. After the other end of the second positioning pin 10 is matched with the second plug hole 8a, the second positioning pin 10 forms a position for the supporting component C. After the connecting sleeve 7 is inserted into the plug-in groove 4a, the second positioning pin 10 is plugged and matched with the second plug hole 8a, thereby limiting the rotation of the connecting sleeve 7 relative to the movable seat 4.

[0039] A driving mechanism D is used to drive the positioner 2 to move, and the positioner 2 is connected to the driving mechanism D; the driving mechanism D includes a first driving unit, a second driving unit, and a third driving unit. The first driving unit is used to move the positioner 2 along the X direction (lateral direction) of the workbench 1, and the first driving unit is fixed to the workbench 1. In this embodiment, the first driving unit includes a first support 11, a first sliding seat 12, and a first rotating driving component 13 for driving the first sliding seat 12 to move along the X direction of the workbench 1. The first support 11 is fixed to the workbench 1, and the first sliding seat 12 is slidably matched with the first support 11. The first support 11 is provided with a first sliding groove, and the first sliding groove is a dovetail groove. The first sliding seat 12 has a first protrusion, and the first protrusion is dovetail-shaped, and the first protrusion is slidably matched with the first sliding groove.

[0040] The first rotating driving component 13 is rotatably matched with the first support 11. The first rotating driving component 13 is composed of a first rod portion and a first hand wheel fixed to the first rod portion. The first rod portion is rotatably matched with the first support 11 through, for example, a bearing. A first accommodating cavity is provided on the first support 11, and the first rod portion extends into the first accommodating cavity on the first support 11.

[0041] A first gear or a first friction wheel 14 is fixed to the first rotating driving component 13, and the first gear or the first friction wheel 14 is located in the first accommodating cavity on the first support 11. The first gear or the first friction wheel 14 is fixed to the first rod portion in the first rotating driving component 13. The first sliding seat 12 is provided with a first rack or a first friction surface, and the first gear is meshed with the first rack, or the first friction wheel 14 cooperates with the first friction surface.

[0042] When torque is applied to the first rotating driving component 13, the first rotating driving component 13 rotates and drives the first gear or the first friction wheel 14 to rotate. The first gear or the first friction wheel 14 transmits power to the first sliding seat 12, thereby causing the first sliding seat 12 to move along the X direction of the workbench 1, and then causing the positioner 2 connected to the driving mechanism D to move along the X direction of the workbench 1.

[0043] The second driving unit is used to move the positioner 2 along the Z direction (longitudinal direction) of the workbench 1, and the second driving unit is fixed to the first driving unit. The second driving unit includes a second support 15, a second sliding seat 16, and a second rotating driving component 17 for driving the second sliding seat 16 to move along the Z direction of the workbench 1. The second support 15 is fixed to the first driving unit, the second support 15 is fixed to the first sliding seat 12 in the first driving unit, the second sliding seat 16 is slidably matched with the second support 15, the second support 15 is provided with a second sliding groove, the second sliding groove is a dovetail groove, the second sliding seat 16 has a second protrusion, the second protrusion is dovetail-shaped, and the second protrusion is slidably matched with the second sliding groove.

[0044] The second rotating driving component 17 is rotationally matched with the second support 15. The second rotating driving component 17 is composed of a second rod portion and a second hand wheel fixed to the second rod portion. The second rod portion is rotationally matched with the second support 15 through, for example, a bearing. A second accommodating cavity is provided on the second support 15, and the second rod portion extends into the second accommodating cavity on the second support 15.

[0045] A second gear or a second friction wheel is fixed on the second rotating driving component 17, and the second gear or the second friction wheel is located in the second accommodating cavity on the second support 15. The second gear or the second friction wheel is fixed to the second rod portion in the second rotating driving component 17. The second sliding seat 16 is provided with a second rack or a second friction surface, and the second gear is meshed with the second rack, or the second friction wheel is matched with the second friction surface.

[0046] When torque is applied to the second rotating driving component 17, the second rotating driving component 17 rotates to drive the second gear or the second friction wheel 14 to rotate, and the second gear or the second friction wheel 14 transmits power to the second sliding seat 16, thereby causing the second sliding seat 16 to move along the Z direction of the workbench 1, and then causing the positioner 2 connected to the driving mechanism D to move along the Z direction of the workbench 1.

[0047] The third driving unit is used to move the positioner 2 along the Y direction (height direction) of the workbench 1. The third driving unit is fixed to the second driving unit, and the positioner 2 is fixed to the third driving unit. The third driving unit includes a third support 18, a third sliding seat 19, and a third rotating driving component 20 for driving the third sliding seat 19 to move along the Y direction of the workbench 1. The third support 18 is fixed to the second driving unit, and the third support 18 is fixed to the second sliding seat 16 in the second driving unit. The third sliding seat 19 is slidably matched with the third support 18, and the third support 18 is provided with a second sliding groove, which is a dovetail groove. The third sliding seat 19 has a third protrusion, which is dovetail-shaped, and the third protrusion is slidably matched with the third sliding groove.

[0048] The third rotating drive component 20 is rotationally matched with the third support 18. The third rotating drive component 20 is composed of a third rod and a third hand wheel fixed to the third rod. The third rod is rotationally matched with the third support 18 through, for example, a bearing. A third accommodating cavity is provided on the third support 18, and the third rod extends into the third accommodating cavity on the third support 18.

[0049] A third gear or a third friction wheel is fixed on the third rotating driving component 20, and the third gear or the third friction wheel is located in the third accommodating cavity on the third support 18. The third gear or the third friction wheel is fixed to the third rod portion in the third rotating driving component 20. The third sliding seat 20 is provided with a third rack or a third friction surface, and the third gear is meshed with the third rack, or the third friction wheel is matched with the third friction surface.

[0050] When torque is applied to the third rotating driving component 20, the third rotating driving component 20 rotates and drives the third gear or the third friction wheel 14 to rotate. The third gear or the third friction wheel 14 transmits power to the third sliding seat 19, thereby causing the third sliding seat 19 to move along the Y direction of the workbench 1, and then causing the positioner 2 connected to the driving mechanism D to move along the Y direction of the workbench 1.

[0051] The first driving unit also includes a first locking mechanism, which includes a first mounting block 24 and a first locking bolt 25. The first mounting block 24 is fixed to the first support 11. A strip hole is provided on the first mounting block 24, and a threaded hole is provided on the first sliding seat 12. The first locking bolt 25 passes through the strip hole and is threadedly connected to the threaded hole on the first sliding seat 12. When the first locking bolt 25 is pressed against the first mounting block 24, the first sliding seat 12 cannot slide relative to the first support 11. When the first locking bolt 25 is separated from the first mounting block 24, the first sliding seat 12 can slide relative to the first support 11.

[0052] The second drive unit is provided with a structure identical to the first lock mechanism, for locking the second slide seat 16 when the second slide seat 16 does not need to slide. The third drive unit is provided with a structure identical to the first lock mechanism, for locking the third slide seat 19 when the third slide seat 19 does not need to slide.

[0053] When inspecting the first groove or the second groove on the rotor, the rotor is matched with the support component C, that is, the rotor is inserted into the connecting sleeve 7, the limiting component 9 is combined with the groove on the rotor, and the first rotating driving component 13 and / or the second rotating driving component 17 and / or the third rotating driving component 20 are rotated to make the driving mechanism D drive the positioner 2 to move to the position required by the operator. Since the positioner 2 in this embodiment adopts an optical microscope, the lens of the optical microscope has a cross-shaped positioning part. The first positioning pin 6 is pulled up to separate the first positioning pin 6 from the first plug hole 1b. The operator manually applies torque to the movable seat 4 to rotate the movable seat 4. The connecting sleeve 7, the rotor, the connecting rod 5, and the angle sensor component B all rotate with the movable seat 4. When the positioning part on the positioner 2 coincides with the starting point of the first groove or the second groove on the rotor, this point is used as the angle origin of the first groove or the second groove. Then rotate the rotating mechanism A, the connecting sleeve 7, the rotor, the connecting rod 5, and the angle sensing component B all rotate again with the movable seat 4, so that the end point of the first groove or the second groove coincides with the positioning part on the positioner 2. At this time, the corresponding angle is displayed by the digital display connected to the angle sensing component B. When detecting the first groove, for example, the first end point angle between the end point of the first groove and the initial angle position of the angle sensing component B, or when detecting the second groove, for example, the second end point angle between the end point of the second groove and the initial angle position of the angle sensing component B, the first end point angle is compared with the second end point angle to determine whether the angle difference between the end points of the first groove and the second groove after press-fitting is within the allowable range (0±1°).

Claims

1. A device for detecting the press-fitting angle of a motor rotor commutator, comprising a workbench (1), and a positioner (2) for observing the starting and ending positions of a first groove or a second groove on a rotor, characterized in that: Also includes: A rotating mechanism (A), wherein the rotating mechanism (A) cooperates with the workbench (1); An angle sensing assembly (B), the angle sensing assembly (B) is connected to the rotating mechanism (A); A supporting member (C) for supporting the rotor, the supporting member (C) being matched with the rotating mechanism (A); A driving mechanism (D) for driving the positioner (2) to move, the positioner (2) being connected to the driving mechanism (D); When inspecting the first groove or the second groove on the rotor, the rotor is matched with the support component (C), and the positioner (2) is driven to move by the driving mechanism (D) so that the positioning part on the positioner (2) coincides with the starting point of the first groove or the second groove, and then the rotating mechanism (A) is rotated so that the end point of the first groove or the second groove coincides with the positioning part on the positioner (2).

2. The detection device for the press-fitting angle of the motor rotor commutator according to claim 1, characterized in that: The rotating mechanism (A) comprises a sleeve (3), a movable seat (4), and a connecting rod (5); a first through hole (1a) is provided on the workbench (1); the sleeve (3) is fixed to the workbench (1) and cooperates with the first through hole (1a); one end of the movable seat (4) is provided with a mating groove (4a); the other end of the movable seat (4) is fixed to one end of the connecting rod (5); and the other end of the connecting rod (5) passes through the sleeve (3) and is connected to the angle sensor component (B).

3. The detection device for the press-fitting angle of the motor rotor commutator according to claim 2, characterized in that: The rotating mechanism (A) further comprises a first positioning pin (6), a second through hole (4b) is provided on the movable seat (4), and a first plug hole (1b) is provided on the workbench (1); after the first positioning pin (6) cooperates with the second through hole (4b) and the first plug hole (1b), the angle of the rotating mechanism (A) is limited to the position of the initial angle.

4. The detection device for the press-fitting angle of the motor rotor commutator according to claim 1, characterized in that: The support component (C) comprises a connecting sleeve (7), a mounting plate (8), and a limiting component (9) for circumferentially limiting the rotor, the mounting plate (8) being fixed to the connecting sleeve (7), the mounting plate (8) being also fixed to the rotating mechanism (A), and a plurality of limiting components (9) being fixed to the connecting sleeve (7).

5. The detection device for the press-fitting angle of the motor rotor commutator according to claim 4, characterized in that: The rotating mechanism (A) comprises a second positioning pin (10), and a second plug hole (8a) is provided on the mounting plate (8). After the second positioning pin (10) is matched with the second plug hole (8a), the second positioning pin (10) positions the supporting component (C).

6. The detection device for the press-fitting angle of the motor rotor commutator according to claim 1, characterized in that: The driving mechanism (D) includes: A first drive unit for moving the positioner (2) along the X direction of the workbench (1), the first drive unit being fixed to the workbench (1); A second drive unit for moving the positioner (2) along the Z direction of the workbench (1), the second drive unit being fixed to the first drive unit; A third drive unit is used to move the positioner (2) along the Y direction of the workbench (1); the third drive unit is fixed to the second drive unit, and the positioner (2) is fixed to the third drive unit.

7. The detection device for the press-fitting angle of the motor rotor commutator according to claim 6, characterized in that: The first driving unit comprises a first support (11), a first sliding seat (12), and a first rotating driving component (13) for driving the first sliding seat (12) to move along the X direction of the workbench (1); the first support (11) is fixed to the workbench (1); the first sliding seat (12) and the first support (11) are slidably matched; the first rotating driving component (13) and the first support (11) are rotatingly matched; a first gear or a first friction wheel (14) is fixed to the first rotating driving component (13); the first sliding seat (12) is provided with a first rack or has a first friction surface; the first gear is meshed with the first rack, or the first friction wheel (14) is matched with the first friction surface.

8. The detection device for the press-fitting angle of the motor rotor commutator according to claim 6, characterized in that: The second driving unit comprises a second support (15), a second sliding seat (16), and a second rotating driving component (17) for driving the second sliding seat (16) to move along the Z direction of the workbench (1); the second support (15) is fixed to the first driving unit, the second sliding seat (16) is slidingly matched with the second support (15), the second rotating driving component (17) is rotatingly matched with the second support (15), a second gear or a second friction wheel is fixed to the second rotating driving component (17), the second sliding seat (16) is provided with a second rack or has a second friction surface, the second gear is meshed with the second rack, or the second friction wheel is matched with the second friction surface.

9. The detection device for the press-fitting angle of the motor rotor commutator according to claim 6, characterized in that: The third driving unit comprises a third support (18), a third sliding seat (19), and a third rotating driving component (20) for driving the third sliding seat (19) to move along the Y direction of the workbench (1); the third support (18) is fixed to the second driving unit; the third sliding seat (19) is slidably matched with the third support (18); the third rotating driving component (20) is rotatably matched with the third support (18); a third gear or a third friction wheel is fixed to the third rotating driving component (20); the third sliding seat (20) is provided with a third rack or has a third friction surface; the third gear is meshed with the third rack, or the third friction wheel is matched with the third friction surface.

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