Detection tool table for rotor shaft of motor

Abstract

The utility model relates to the field of detection devices, in particular to a motor rotor shaft detection tool table which comprises a base, a supporting assembly and a dial indicator, the supporting assembly comprises a supporting seat and an adjusting seat, the supporting seat is connected to the base, the adjusting seat is slidably connected to the base, and the sliding direction of the adjusting seat is parallel to the axis direction of a workpiece. A first groove is formed in the end, away from the base, of the supporting seat, a second groove is formed in the end, away from the base, of the adjusting seat, a workpiece is embedded into the first groove and the second groove, and the dial indicator is connected to the base and used for detecting the coaxiality of the two ends of the workpiece. The fixed seat is connected to the base, the adjusting seat is slidably connected to the base, and the dial indicator is connected to the base, so that a workpiece can be conveniently placed in the first groove and the second groove, the dial indicator abuts against the outer wall of the workpiece, the workpiece is rotated, workpiece coaxiality detection is achieved, the operation process is simplified, manual intervention is reduced, the detection time is shortened, and the labor intensity is reduced. The accuracy of measurement is improved, and the efficiency and precision of motor rotor coaxiality detection are improved.

Description

Technical Field

[0001] This application relates to the field of testing devices, and in particular to a motor rotor shaft inspection fixture. Background Technology

[0002] Due to different fitting relationships and overall installation requirements, the rotor of an electric motor is a typical multi-cylindrical surface assembly part. The multiple cylindrical surfaces should be coaxial. According to the processing technology of most motor manufacturers, especially for small and medium-sized motors, the center hole of the shaft end face is mostly used as the processing reference for multiple cylindrical surfaces and multiple processing steps. As the rotating part of the electric motor, the rotor's own balance and coaxiality have a significant impact on the overall performance of the motor, especially on electrical performance and vibration performance. Therefore, the coaxiality detection of the rotor is particularly important.

[0003] Existing rotor coaxiality testing devices use pneumatic gauges or manual operation. Pneumatic gauges are expensive to purchase, increasing equipment costs for companies. Manual operation involves adjusting the dial indicator pointer while manually rotating the rotor for testing, which is very inconvenient, time-consuming, and labor-intensive. Utility Model Content

[0004] To facilitate the detection of the coaxiality of the motor rotor, this application provides a motor rotor shaft inspection fixture.

[0005] The electric motor rotor shaft inspection fixture provided in this application adopts the following technical solution:

[0006] A motor rotor shaft inspection fixture includes a base, a support assembly, and a dial indicator. The support assembly includes a support seat and an adjusting seat. The support seat is connected to the base, and the adjusting seat is slidably connected to the base. The sliding direction of the adjusting seat is parallel to the axial direction of the workpiece. The support seat has a first groove at one end away from the base, and the adjusting seat has a second groove at one end away from the base. The first and second grooves are used for embedding the workpiece. The dial indicator is connected to the base and is used to detect the coaxiality of the two ends of the workpiece.

[0007] By adopting the above technical solution, the fixed seat is connected to the base, the adjusting seat is slidably connected to the base, and the dial indicator is connected to the base, which facilitates placing the workpiece in the first groove and the second groove, so that the dial indicator abuts against the outer wall of the workpiece, and the workpiece is rotated to realize the detection of the coaxiality of the workpiece. This simplifies the operation process, reduces manual intervention, reduces the detection time and labor intensity, improves the accuracy of measurement, and improves the efficiency and accuracy of motor rotor coaxiality detection.

[0008] Preferably, the support base is provided with a first fixing hole, the base is provided with a first connecting hole, the first connecting hole is used for the workpiece to pass through and be threadedly connected to the first fixing hole, the base is provided with a second fixing hole, and the adjusting seat is provided with an adjusting groove, the adjusting groove is used for the fixing bolt to pass through and be threadedly connected to the second fixing hole.

[0009] By adopting the above technical solution, the fixing bolt passes through the first connecting hole and is threaded into the first fixing hole, realizing the detachable connection between the support and the base. This makes it easy to loosen the fixing bolt to replace or repair the support. The adjusting seat is provided with an adjusting groove. The fixing bolt passes through the adjusting groove and is threaded into the second fixing hole, making it easy to loosen the fixing bolt as needed. After sliding the adjusting seat to the appropriate area, the fixing bolt is tightened to realize the fixed connection between the adjusting seat and the base, improving the service life and convenience of the equipment.

[0010] Preferably, there are several first connecting holes, which are spaced apart along the sliding direction of the adjusting seat; and there are several second fixing holes, which are spaced apart along the sliding direction of the adjusting seat.

[0011] By adopting the above technical solution, several first connecting holes and several second fixing holes are provided, which improves the adjustment range of the support and adjustment seat, helps the equipment meet the detection needs of workpieces of different lengths, and improves the applicability of the equipment.

[0012] Preferably, a first groove is provided on the hole wall at the end of the first connecting hole away from the support base, and the first groove is used for the head of the fixing bolt to be inserted.

[0013] By adopting the above technical solution, a first groove is provided on the side of the base away from the support and adjustment seat, which facilitates the insertion of the head of the fixing bolt, ensures that the surface of the base away from the support remains horizontal, helps the base to remain flat when placed on the workbench or ground, ensures the stability of the equipment during the testing process, and improves the testing accuracy of the equipment.

[0014] Preferably, the base is provided with a sliding groove, one end of the support seat and the adjusting seat is embedded in the sliding groove, the two side walls of the support seat along the sliding direction perpendicular to the adjusting seat are in contact with the side wall of the sliding groove, and the two side walls of the adjusting seat along the sliding direction perpendicular to the adjusting seat are in contact with the side wall of the sliding groove.

[0015] By adopting the above technical solution, the base is provided with a slide groove, and the support seat and adjusting seat are embedded in the slide groove. The side walls of the support seat and adjusting seat are in close contact with the slide groove wall, which ensures the precise movement of the support seat and adjusting seat along the workpiece axis, improves the flexibility of equipment adjustment, improves the stability of the connection between the support seat, adjusting seat and base, reduces the possibility of the support seat and adjusting seat deviating from the base during the detection process, and improves the reliability of the equipment.

[0016] Preferably, it also includes a backing, which is connected to the side of the support base away from the adjustment base, and the backing is used for one end of the workpiece to abut against it.

[0017] By adopting the above technical solution, the support structure enables the workpiece to be positioned more stably during the inspection process, reducing the possibility of measurement errors caused by the displacement of the dial indicator's corresponding detection position along the workpiece axis when the workpiece is rotated. This reduces the impact of human factors on the inspection results and improves the inspection accuracy and reliability of the equipment.

[0018] Preferably, it also includes support bearings, wherein there are four support bearings, which are divided into two groups. The two groups of support bearings are respectively connected to the support seat and the adjustment seat. The two support bearings in the same group are distributed on both sides of the workpiece axis, and the support bearings are used to abut against the outer wall of the workpiece.

[0019] By adopting the above technical solution and setting up support bearings, the possibility of workpiece shaking during the inspection process is reduced, thus improving the inspection accuracy and stability of the equipment.

[0020] Preferably, it further includes a guide rod and a sliding seat. The guide rod is connected to the base, and the length direction of the guide rod is parallel to the sliding direction of the adjusting seat. The sliding seat is slidably connected to the guide rod, and the sliding direction of the sliding seat is parallel to the length direction of the guide rod. The lower end of the sliding seat is in contact with the base, and the dial indicator is connected to the sliding seat.

[0021] By adopting the above technical solution, a sliding seat is set up, which makes it easy to push the sliding seat to the designated position as needed. A guide rod is set up, and the sliding seat is slidably connected to the guide rod. One end of the sliding seat is in contact with the base, which improves the stability of the sliding seat and reduces the possibility of excessive dial indicator measurement error caused by the sliding seat, thereby improving the stability and reliability of the equipment detection.

[0022] Preferably, there are two sliding seats, which are spaced apart along the length of the guide rod, and the number of dial indicators is the same as the number of sliding seats and corresponds one-to-one.

[0023] By adopting the above technical solution, two sliding seats are provided, and the number of dial indicators is the same as the number of sliding seats and corresponds one-to-one, which facilitates simultaneous detection of both ends of the workpiece and improves the detection efficiency of the equipment.

[0024] Preferably, the sliding seat has a through hole, the guide rod is slidably embedded in the through hole, the outer wall of the guide rod is in contact with the wall of the through hole, and the sliding seat has a positioning hole on the side away from the support seat. The positioning hole is connected to the through hole and is used to allow the fixing bolt to be threaded and pressed against the outer wall of the guide rod.

[0025] By adopting the above technical solution, the outer wall of the guide rod fits into the wall of the through hole, improving the stability of the sliding seat. A positioning hole is set, which is connected to the through hole. The fixing bolt is threaded into the positioning hole and abuts against the outer wall of the guide rod, realizing the relative fixation of the sliding seat and the guide rod. This reduces the possibility of the sliding seat sliding during the detection process, which may cause the dial indicator to shift and result in measurement errors, thereby improving the detection accuracy and reliability of the equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The fixed base is connected to the base, the adjusting base is slidably connected to the base, and the dial indicator is connected to the base, which makes it easy to place the workpiece in the first groove and the second groove, so that the dial indicator abuts against the outer wall of the workpiece, rotates the workpiece, and realizes the detection of the coaxiality of the workpiece. This simplifies the operation process, reduces manual intervention, reduces the detection time and labor intensity, improves the accuracy of measurement, and improves the efficiency and accuracy of motor rotor coaxiality detection.

[0028] 2. The support structure allows the workpiece to be positioned more stably during the inspection process, reducing the possibility of measurement errors caused by the displacement of the dial indicator's corresponding inspection position along the workpiece axis when the workpiece is rotated. This reduces the impact of human factors on the inspection results and improves the inspection accuracy and reliability of the equipment.

[0029] 3. Install support bearings to reduce workpiece shaking during the inspection process, which could lead to excessive inspection errors and improve the inspection accuracy and stability of the equipment. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the motor rotor shaft inspection fixture.

[0031] Figure 2 This is a sectional view of the motor rotor shaft inspection table, mainly showing the support base.

[0032] Figure 3 This is a schematic diagram of the motor rotor shaft inspection fixture from another perspective.

[0033] Figure 4 This is a partial sectional view of the motor rotor shaft inspection fixture.

[0034] Figure 5 This is a sectional view of the motor rotor shaft inspection table, mainly showing the mounting components.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Base; 11. Slide groove; 12. Through groove; 13. First connecting hole; 14. First recessed groove; 15. Second fixing hole; 16. Fourth fixing hole;

[0037] 2. Support assembly; 21. Support base; 211. First fixing hole; 212. First groove; 213. First chamfer; 214. First mounting hole; 215. Third connecting hole; 22. Adjusting seat; 221. Support section; 2211. Second groove; 2212. Second chamfer; 2213. Second mounting hole; 222. Connecting section; 2221. Adjusting groove; 23. Connecting rod; 24. Support bearing; 25. Backing; 251. Abutment plate; 2511. Third chamfer; 252. Connecting plate; 2521. Third fixing hole;

[0038] 3. Mounting components; 31. Fixing base; 311. Connecting block; 3111. Fourth connecting hole; 32. Guide rod; 33. Sliding seat; 331. Through hole; 332. Positioning hole; 333. Fifth fixing hole; 34. Mounting base; 341. Fixing part; 3411. Fifth connecting hole; 342. Connecting part; 343. Mounting part; 3431. Placement hole; 3432. Limiting hole;

[0039] 4. Dial gauge. Detailed Implementation

[0040] The present application will be further described in detail below with reference to the accompanying drawings.

[0041] Reference Figure 1 This application discloses an electric motor rotor shaft inspection table including a base 1. A sliding groove 11 is provided on one side surface of the base 1 along the thickness direction of the base 1. The two ends of the sliding groove 11 penetrate the base 1 along the length direction of the base 1. The base 1 is provided with a through groove 12, which is connected to the sliding groove 11 and penetrates the base 1 along the thickness direction of the base 1.

[0042] Reference Figure 1 and Figure 2 A motor rotor shaft inspection fixture also includes a support assembly 2, which includes a support base 21. One end of the support base 21 abuts against the bottom of the slide groove 11, and both sides of the support base 21 along its length are in contact with the wall of the slide groove 11. Two first fixing holes 211 are provided at the end of the support base 21 near the bottom of the slide groove 11, symmetrically distributed along the length of the support base 21. A first connecting hole 13 is provided at the bottom of the slide groove 11, penetrating the base 1 along its thickness direction, for a fixing bolt to pass through and threadedly connect to the first fixing hole 211. Several first connecting holes 13 are provided, divided into two groups, each group corresponding to one of the two first fixing holes 211, with the first connecting holes 13 spaced apart along the length of the base 1.

[0043] Reference Figure 2 and Figure 3In this embodiment, there are six first connecting holes 13, and three first connecting holes 13 in the same group are evenly distributed along the length of the base 1. A first groove 14 is provided on the hole wall of the first connecting hole 13 away from the slide groove 11. The first groove 14 is used for the head of the fixing bolt to be inserted.

[0044] Reference Figure 1 and Figure 3 The support assembly 2 also includes an adjusting seat 22. The adjusting seat 22 includes a supporting section 221 and a connecting section 222. One end of the supporting section 221 abuts against the bottom of the slide groove 11. Both sides of the supporting section 221 along its length are in contact with the wall of the slide groove 11. One end of the connecting section 222 is fixedly connected to the side of the supporting section 221 away from the supporting seat 21. The side of the connecting section 222 near the bottom of the slide groove 11 is in contact with the bottom of the slide groove 11. Both sides of the connecting section 222 along its length are in contact with the wall of the slide groove 11. The connecting section 222 is provided with adjusting grooves 2221, which penetrate the connecting section 222 along its thickness. Two adjusting grooves 2221 are provided, symmetrically distributed along the length of the connecting section 222. The bottom of the slide groove 11 is provided with a plurality of second fixing holes 15, which penetrate the base 1 along the thickness direction of the base 1. The shank of the fixing bolt passes through the adjusting groove 2221 and is threaded into the second fixing hole 15. The head of the fixing bolt abuts against the side surface of the connecting section 222 away from the bottom of the slide groove 11. A plurality of second fixing holes 15 are provided, divided into two groups, each group corresponding to one of the two adjusting grooves 2221. The plurality of second fixing holes 15 in each group are spaced apart along the length direction of the base 1. In this embodiment, there are eight second fixing holes 15, with four in each group evenly distributed along the length direction of the base 1.

[0045] Reference Figure 1 and Figure 2The support base 21 has a first groove 212 at one end away from the bottom of the sliding groove 11. A first chamfer 213 is provided on each of the two sides of the groove along the length of the support base 21, located on the side of the first groove 212 away from the base 1. The support section 221 has a second groove 2211 at one end away from the bottom of the sliding groove. A second chamfer 2212 is provided on each of the two sides of the groove along the length of the support section 221, located on the side of the second groove 2211 away from the base 1. The support assembly 2 also includes a connecting rod 23 and a support bearing 24. The support base 21 has two first mounting holes 214, which penetrate the support base 21 along the length of the base 1. The two first mounting holes 214 are distributed on both sides of the first groove 212 along the length of the support base 21, and the distances from the axes of the two first mounting holes 214 to the two sides of the support base 21 along the length of the support base 21 are equal. The support section 221 is provided with a second mounting hole 2213, which extends through the support section 221 along the length of the base 1. There are two second mounting holes 2213, distributed on both sides of the second groove 2211 along the length of the support section 221. The distances from the axes of the two second mounting holes 2213 to the two side surfaces of the support section 221 along its length are equal. The number of connecting rods 23 is the same as the number of first mounting holes 214 and second mounting holes 2213, and they correspond one-to-one. One end of each connecting rod 23 is embedded in the first mounting hole 214 and the second mounting hole 2213. The number of support bearings 24 is the same as the number of connecting rods 23, and they correspond one-to-one. The support bearings 24 are located between the support base 21 and the support section 221, and are coaxially rotatably connected to the outer periphery of the connecting rods 23. The outer wall of the support bearing 24 is in contact with the outer wall of the workpiece.

[0046] The support assembly 2 also includes a backrest 25, which is located on the side of the support base 21 away from the adjustment base 22.

[0047] Reference Figure 2 and Figure 4The support 25 includes an abutment plate 251 and a connecting plate 252. One end of the connecting plate 252 is fixedly connected to the side surface of the support 21 away from the adjusting seat 22. The connecting plate 252 has two third fixing holes 2521, and two second fixing holes 15 are symmetrically distributed along the length of the support 21. The support 21 has three connecting holes 215, the number of which is the same as the number of third fixing holes 2521 and they correspond one-to-one. The third connecting holes 215 are used for fixing bolts to pass through and be threaded into the third fixing holes 2521. The head of the fixing bolt abuts against the side surface of the support 21 away from the connecting plate 252. The end of the abutment plate 251 near the bottom of the groove 11 is fixedly connected to the side of the connecting plate 252 away from the support 21. The side surface of the abutment plate 251 near the support 21 is used for one end of the workpiece to abut against. The abutment plate 251 has a third chamfer 2511 at one end away from the bottom of the groove 11. The third chamfer 2511 is located on the side of the abutment plate 251 close to the support seat 21. The third chamfer 2511 is used for one end of the workpiece to abut.

[0048] Reference Figure 1 and Figure 3 A motor rotor shaft inspection fixture also includes a mounting assembly 3. The mounting assembly 3 includes a fixed base 31, a guide rod 32, and a sliding base 33. One end of the fixed base 31 is fixedly connected to the surface of the base 1 near the slide groove 11. Two fixed bases 31 are provided, symmetrically distributed along the length of the base 1. The surface of the fixed base 31 away from the other fixed base 31 is flush with the surface of the base 1 along its length. Connecting blocks 311 are fixedly connected to both sides of the fixed base 31 along the width of the base 1. The surface of the connecting block 311 near the base 1 is flush with the end of the fixed base 31 near the base 1. The connecting block 311 has a fourth connecting hole 3111. The base 1 has a fourth fixing hole 16. The number of fourth fixing holes 16 is the same as the number of fourth connecting holes 3111 and they correspond one-to-one. The fourth connecting hole 3111 is used for a fixing bolt to pass through and be threaded into the fourth fixing hole 16. The head of the fixing bolt abuts against the surface of the connecting block 311 away from the base 1. The guide rod 32 is parallel to the length of the base 1, and its two ends are fixedly connected to two fixed seats 31. The sliding seat 33 is slidably connected to the guide rod 32, and the sliding direction of the sliding seat 33 is parallel to the length of the guide rod 32. One end of the sliding seat 33 is in contact with the surface of the base 1 near the guide rod 32.

[0049] Reference Figure 5The sliding seat 33 has a through hole 331, and the guide rod 32 is coaxially slidably embedded in the through hole 331. The outer wall of the guide rod 32 is in contact with the wall of the through hole 331. The sliding seat 33 has a positioning hole 332 on the side away from the support seat 21. The positioning hole 332 is connected to the through hole 331 and is used to allow the fixing bolt to be threaded and pressed against the outer wall of the guide rod 32. There are two sliding seats 33, which are spaced apart along the length of the guide rod 32.

[0050] Reference Figure 1 and Figure 5 The motor rotor shaft inspection table also includes a dial indicator 4. The mounting assembly 3 also includes mounting bases 34, the number of which is the same as the number of sliding bases 33 and corresponds one-to-one. The mounting bases 34 are fixedly connected to the side surface of the sliding base 33 near the support base 21. Each mounting base 34 includes a fixing part 341, a connecting part 342, and a mounting part 343. The side surface of the fixing part 341 away from the support base 21 is in contact with the side surface of the sliding base 33 near the support base 21. The fixing part 341 has two fifth connecting holes 3411, spaced apart along the thickness direction of the base 1. The side surface of the sliding base 33 near the fixing part 341 has five fixing holes 333, the number of which is the same as the number of fifth connecting holes 3411 and corresponds one-to-one. The fifth connecting holes 3411 are used for a fixing bolt to pass through and be threaded into the fifth fixing hole 333, with the head of the fixing bolt abutting against the side surface of the fixing part 341 away from the sliding base 33. One end of the connecting part 342 is fixedly connected to the end of the fixing part 341 away from the base 1, and the surface of the connecting part 342 away from the base 1 is flush with the end of the sliding seat 33 away from the base 1. The end of the mounting part 343 near the base 1 is fixedly connected to the end of the connecting part 342 away from the sliding seat 33. The mounting part 343 is provided with a placement hole 3431, which penetrates the mounting part 343 along the width direction of the base 1. The number of dial indicators 4 is the same as the number of mounting seats 34 and corresponds one-to-one. The measuring rod of the dial indicator 4 passes through the placement hole 3431, and the outer wall of the sleeve of the dial indicator 4 fits against the wall of the placement hole 3431. The dial indicator 4 is used to detect the coaxiality of the two ends of the workpiece. The end of the mounting part 343 away from the base 1 is provided with a limiting hole 3432, which is used to allow the fixing bolt to be threaded and pressed against the outer wall of the sleeve of the dial indicator 4.

[0051] The implementation principle of the motor rotor shaft inspection table in this application embodiment is as follows: the first fixing hole 211 of the support base 21 is aligned with the corresponding first connecting hole 13, and the fixing bolt passes through the first connecting hole 13 and is threadedly connected to the first fixing hole 211. The fixing bolt passes through the adjusting groove 2221 and is threadedly connected to the corresponding second connecting hole.

[0052] The workpiece is placed on the support base 21 and the support section 221. The support section 221 is slidable so that the outer wall of the workpiece is in contact with the outer walls of the four support bearings 24. The axis of the workpiece is parallel to the length direction of the base 1. The head of the fixing bolt is pressed against the connecting section 222, pushing one end of the workpiece against the backrest 25. The two sliding seats 33 are adjusted so that the measuring rods of the two dial indicators 4 are aligned with the area to be measured. The fixing bolt is threaded into the positioning hole 332 and then pressed against the outer wall of the guide rod 32.

[0053] Rotate the workpiece and observe the changes in the readings of the two dial indicators to determine the coaxiality of the two ends of the workpiece.

[0054] 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. An electric motor rotor shaft testing fixture table, characterized by: It includes base (1), support assembly (2) and dial indicator (4); the support assembly (2) includes support seat (21) and adjusting seat (22); the support seat (21) is connected to base (1); the adjusting seat (22) is slidably connected to base (1); the sliding direction of the adjusting seat (22) is parallel to the axial direction of the workpiece; the end of the support seat (21) away from base (1) is provided with a first groove (212); the end of the adjusting seat (22) away from base (1) is provided with a second groove (2211); the first groove (212) and the second groove (2211) are used for embedding the workpiece; the dial indicator (4) is connected to base (1); the dial indicator (4) is used for detecting the coaxiality of the two ends of the workpiece.

2. The motor rotor shaft tester table of claim 1, wherein: The support seat (21) is provided with a first fixing hole (211); the base (1) is provided with a first connecting hole (13); the first connecting hole (13) is used for being threaded with the first fixing hole (211) after the workpiece passes through; the base (1) is provided with a second fixing hole (15); the adjusting seat (22) is provided with an adjusting groove (2221); the adjusting groove (2221) is used for being threaded with the second fixing hole (15) after the fixing bolt passes through.

3. The motor rotor shaft tester table of claim 2, wherein: The first connecting hole (13) is provided with a plurality of first connecting holes (13); a plurality of first connecting holes (13) are distributed along the sliding direction of the adjusting seat (22); the second fixing hole (15) is provided with a plurality of second fixing holes (15); a plurality of second fixing holes (15) are distributed along the sliding direction of the adjusting seat (22).

4. The motor rotor shaft tester table of claim 2, wherein: The first connecting hole (13) is provided with a first embedding groove (14) at the hole wall of the end away from the support seat (21); the first embedding groove (14) is used for embedding the head of the fixing bolt.

5. The motor rotor shaft tester table of claim 2, wherein: The base (1) is provided with a sliding groove (11); one end of the support seat (21) and the adjusting seat (22) is embedded in the sliding groove (11); the two side walls of the support seat (21) along the direction perpendicular to the sliding direction of the adjusting seat (22) are fitted with the side walls of the sliding groove (11); the two side walls of the adjusting seat (22) along the direction perpendicular to the sliding direction of the adjusting seat (22) are fitted with the side walls of the sliding groove (11).

6. The motor rotor shaft tester table of claim 1, wherein: It also includes a backrest (25); the backrest (25) is connected to the side of the support seat (21) away from the adjusting seat (22); the backrest (25) is used for abutting the one end of the workpiece.

7. The motor rotor shaft tester table of claim 1, wherein: It also includes support bearings (24); the support bearings (24) are provided with four; the four support bearings (24) are divided into two groups; the two groups of support bearings (24) are connected to the support seat (21) and the adjusting seat (22) respectively; the two support bearings (24) in the same group are distributed on the two sides of the workpiece axis; the support bearings (24) are used for abutting the outer wall of the workpiece.

8. The motor rotor shaft tester table of claim 1, wherein: Further comprising a guide rod (32) and a sliding seat (33); the guide rod (32) is connected to the base (1); the length direction of the guide rod (32) is parallel to the sliding direction of the adjusting seat (22); the sliding seat (33) is slidingly connected to the guide rod (32); the sliding direction of the sliding seat (33) is parallel to the length direction of the guide rod (32); the lower end of the sliding seat (33) is attached to the base (1); the dial gauge (4) is connected to the sliding seat (33).

9. The motor rotor shaft tester table of claim 8, wherein: The sliding seat (33) is provided with two; two sliding seats (33) are distributed along the length direction of the guide rod (32); the number of the dial gauges (4) is the same as the number of the sliding seats (33) and one-to-one correspondence.

10. The motor rotor shaft tester table of claim 8, wherein: The sliding seat (33) is provided with a through hole (331); the guide rod (32) is slidingly embedded in the through hole (331); the outer wall of the guide rod (32) is attached to the hole wall of the through hole (331); the side of the sliding seat (33) away from the support seat (21) is provided with a positioning hole (332); the positioning hole (332) is communicated with the through hole (331); the positioning hole (332) is used for abutting against the outer wall of the guide rod (32) after the fixed bolt is threadedly connected.

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