Motor rotor runout testing tool

Abstract

The utility model discloses a motor rotor runout testing fixture tool belongs to motor rotor technical field. The utility model discloses a base, support plate, support arm, clamping arm, shaft sleeve, axle core and measuring scale, assemble the axle core to the motor rotor inner hole, and clamping arm clamps the measuring scale and detects the runout size numerical value of motor rotor. The utility model discloses the accurate design of positioning reference, ensures that runout value measurement is more accurate, and the fixture can realize the clamping and positioning of motor rotor quickly, avoids the time -consuming of manual repeated adjustment, especially suitable for the efficient inspection demand in batch production, through adjustable structure (such as support arm, clamping arm, shaft sleeve, axle core and measuring scale), can satisfy the motor rotor detection of different length, diameter, solves the problem of poor adaptability of single tooling, in addition, the standardization tooling design simplifies the detection process, reduces the dependence on the skill proficiency of operating personnel, reduces the influence of artificial factors on the detection result.

Description

Technical Field

[0001] This utility model belongs to the field of motor rotor runout detection and relates to a motor rotor runout inspection tool. Background Technology

[0002] Currently, people have increasingly higher performance requirements for motors, demanding higher precision in motor manufacturing. As the rotating component of the motor, the rotor requires high rotational accuracy. The current motor rotor testing process involves manually installing a shaft into the inner hole of the motor rotor, placing it at the testing station using the shaft as a reference, and rotating the shaft to drive the motor rotor to rotate, measuring the runout value using a dial indicator. If the testing position needs to be changed, the installation position of the shaft in the inner hole of the motor rotor is adjusted, and the above rotation measurement steps are repeated. This operation has the following drawbacks: ① The accuracy of the test is greatly affected by human factors: When manually clamping the shaft core, if the insertion angle and force are uneven, it is easy to cause the shaft core to deviate from the fit between the shaft core and the inner hole of the motor rotor, causing the reference to shift and directly affecting the accuracy of the runout measurement; manual operation when adjusting the position of the shaft core may also introduce additional errors.

[0003] ②Low testing efficiency: Manual clamping and adjustment of the shaft core require repeated operations. Especially when testing in multiple positions, each time the position is changed, it is necessary to reposition and rotate for measurement. The process is cumbersome and does not meet the high-efficiency testing requirements of mass production.

[0004] ③ High labor intensity: Long-term repetitive clamping and rotating of shafts can easily cause operator fatigue, further increasing the risk of errors and affecting the stability of testing.

[0005] ④ Poor consistency of reference: The fit between the shaft core and the inner hole of the motor rotor changes with manual operation. It is difficult to unify the reference between different testing rounds or different operators, which leads to a decrease in the repeatability and comparability of measurement data. Utility Model Content

[0006] The purpose of this invention is to propose a motor rotor runout inspection fixture to solve the problem of low accuracy in motor rotor runout detection in the prior art.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: A motor rotor runout inspection fixture includes a base, a support plate, a support arm, a clamping arm, a bushing, a shaft core, and a measuring ruler. The support plate is connected to the base, one end of the support arm is connected to the support plate, the other end of the support arm is connected to one end of the clamping arm, the other end of the clamping arm is connected to the measuring ruler, one end of the bushing is connected to the support plate, one end of the shaft core is rotatably connected to the bushing, and the other end of the shaft core is used to assemble the motor rotor. The clamping arm is arranged around the shaft core, and the detection end of the measuring ruler is aligned with the detection position of the motor rotor.

[0008] Furthermore, a first groove is provided at one end of the support arm, and a bolt is provided in the first groove. The bolt is connected to the support plate. The bolt is loosened so that the bolt can move relative to the first groove, and the bolt is tightened so that the bolt can connect the support arm to the support plate.

[0009] Furthermore, the other end of the support arm is provided with a first mounting hole, and one end of the clamping arm is disposed in the first mounting hole.

[0010] Furthermore, a tightening bolt is provided at the other end of the support arm, which passes through the first mounting hole and abuts against the side of one end of the clamping arm.

[0011] Furthermore, a second groove is provided at the other end of the clamping arm, and a slot is provided on the opposite side of the inner wall of the second groove, which is used to clamp the measuring ruler.

[0012] Furthermore, a second mounting hole is provided on the opposite side of the end of the second groove, and a locking bolt is fitted into the second mounting hole.

[0013] Furthermore, an assembly groove is provided at the bottom center of one end of the bushing, and one end of the shaft core is rotatably connected to the assembly groove through a bearing; the other end of the bushing is a hollow structure, and the other end of the shaft core passes through the other end of the bushing.

[0014] Furthermore, the edge of one end of the bushing is fixedly connected to the base by bolts.

[0015] Furthermore, the measuring ruler is set to a micrometer.

[0016] Compared with the prior art, this utility model has the following advantages: As described above, this utility model relates to a motor rotor runout inspection fixture. Through precise design of the positioning reference, this utility model reduces measurement errors caused by unstable motor rotor placement or positioning deviations, ensuring more accurate runout measurement. The fixture can quickly clamp and position the motor rotor, avoiding the time-consuming manual adjustments, making it particularly suitable for the high-efficiency inspection needs in mass production. Adjustable structures (such as support arms, clamping arms, bushings, shaft cores, and measuring rulers) can meet the inspection needs of motor rotors of different lengths and diameters, solving the problem of poor adaptability of single fixtures. Furthermore, the standardized fixture design simplifies the inspection process, reduces reliance on operator skill levels, and minimizes the impact of human factors on the inspection results. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a motor rotor runout inspection fixture according to the present invention; Figure 2 This is a top view of a motor rotor runout inspection fixture according to the present invention; Figure 3 This is a left view of a motor rotor runout inspection fixture according to the present invention; Figure 4 This is a perspective view of the support arm of a motor rotor runout inspection fixture according to the present invention; Figure 5 This is a perspective view of the clamping arm of a motor rotor runout inspection fixture according to the present invention; Figure 6 This is a perspective view of the bushing of a motor rotor runout inspection fixture according to the present invention; Figure 7 for Figure 6 AA cross-section view; Figure 8 This is a perspective view of the shaft core of a motor rotor runout inspection fixture according to the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1-base; 2-support plate; 3-support arm; 31-first groove; 32-first mounting hole; 33-tightening bolt; 4-clamping arm; 41-second groove; 42-slot; 43-second mounting hole; 44-locking bolt; 5-shaft sleeve; 51-assembly groove; 52-third mounting hole; 6-shaft core. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figures 1 to 3 As shown, a motor rotor runout inspection fixture according to this embodiment includes a base 1, a support plate 2, a support arm 3, a clamping arm 4, a bushing 5, and a shaft core 6.

[0022] Define the axis direction of bushing 5 or shaft core 6 as the left-right direction.

[0023] The bottom of the support plate 2 is connected to the top of the base 1. One end of the support arm 3 is provided with a first groove 31, such as... Figure 4As shown. A bolt is provided in the first groove 31, and the bolt is connected to the support plate. Loosening the bolt allows it to move relative to the first groove 31, and tightening the bolt allows the support arm 3 to be connected to the support plate 2. Therefore, the bolt is slidably connected in the first groove 31 to adjust the extension distance of the support arm 3, and the support arm 3 can rotate around the bolt to adjust its position. A first mounting hole 32 is provided at the other end of the support arm 3, and one end of the clamping arm 4 is provided in the first mounting hole 32. The position of the clamping arm 4 passing through the first mounting hole 32 is adjustable. A tightening bolt 33 is also provided at the other end of the support arm 3. The tightening bolt 33 passes through the first mounting hole 32 and abuts against the side of one end of the clamping arm 4. The tightening bolt 33 is used to fix the position of the clamping arm 4 in the first mounting hole 32.

[0024] like Figure 5 As shown, a second groove 41 is provided at the other end of the clamping arm 4. Corresponding slots 42 are provided on opposite sides of the inner wall of the second groove 41. The slots 42 on opposite sides form a clamping area with one-to-one correspondence, which is used to place the measuring ruler. The number of opposite slots 42 is not limited to one pair. In this embodiment, there are two pairs of opposite slots 42. Therefore, the measuring ruler can be adjusted into the appropriate slot 42 according to the position of the motor rotor.

[0025] In addition, to ensure that the measuring ruler is fixed in the slot 42, a corresponding second mounting hole 43 is provided on the opposite side of the end of the second groove 41. The second mounting hole 43 is provided with a locking bolt 44, which is tightened to fix the measuring ruler.

[0026] The support arm 3 and its matching clamp arm 4 and measuring ruler are not limited to one set. In this example, the support arm 3 and its matching clamp arm 4 and measuring ruler are two sets, which are installed at different positions on the same side of the support plate 2 to detect the runout value of the motor rotor.

[0027] like Figures 6 to 8 As shown, a mounting groove 51 is provided at the bottom center of the left end of the bushing 5, and the left end of the shaft core 6 is rotatably connected to the mounting groove 51 via a bearing; the right end of the bushing 5 is a hollow structure, and the right end of the shaft core 6 passes through the right end of the bushing, with the length of the shaft core 6 being greater than the length of the bushing 5. Therefore, the part of the right end of the shaft core that passes through the bushing is used to assemble the motor rotor. The clamping arm 4 is arranged around the shaft core, so that the detection end of the measuring ruler held by the clamping arm 4 is aligned with the detection position of the motor rotor, and the appropriate bushing 5 and shaft core 6 can be changed according to the size of the inner and outer diameter of the motor rotor. In addition, four axially symmetrical third mounting holes 52 are provided at the edge of the left end of the bushing 5, and bolts pass through the third mounting holes 52 to fix the bushing 5 to the support plate 2.

[0028] The purpose of the measuring ruler is to detect the dimensional value of the motor rotor runout. In this embodiment, a micrometer is used. Of course, the measuring ruler is not limited to a micrometer; other measuring rulers that can detect the value of motor rotor runout are also applicable.

[0029] All the parts mentioned above can be processed and formed from steel, which has good stability, high reliability, and is easy to operate.

[0030] The steps for detecting motor rotor runout are as follows: First, replace the appropriate bushing 5 and shaft core 6 according to the inner and outer diameters of the motor rotor to be tested; then, assemble the shaft core 6 into the inner hole of the motor rotor, and adjust the posture of the support arm 3 and clamping arm 4 so that the testing ends of the two measuring rulers are aligned with the testing positions on both sides of the motor rotor; finally, zero the measuring rulers according to the testing positions of the motor rotor, and rotate the motor rotor (the shaft core 6 and bushing 5 will rotate with the motor rotor) to obtain the runout value.

[0031] In summary, this design, through fixed tooling and adjustable structures (such as the extension distance and rotation angle of support arm 3, the position of clamping arm 4, the position of measuring ruler, and the dimensions of bushing 5 and shaft core 6), can accurately detect the runout of the motor rotor, greatly improving production inspection efficiency. It is applicable to motor rotors of various inner and outer diameters and can quickly detect defective products, allowing for timely adjustments to the production process and preventing further defective output. The tooling can quickly clamp and position the motor rotor, avoiding the time-consuming process of repeated manual adjustments, making it particularly suitable for the high-efficiency inspection needs in mass production. Furthermore, the standardized tooling design simplifies the inspection process, reduces reliance on operator skill levels, and minimizes the impact of human factors on the inspection results.

[0032] The present embodiment has now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the motor rotor runout inspection fixture of the present invention. Of course, the above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the content of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention and should be protected by the present invention.

Claims

1. A motor rotor runout inspection fixture, comprising a base, a support plate, a support arm, a clamping arm, a bushing, a shaft core, and a measuring ruler, characterized in that: The support plate is connected to the base, one end of the support arm is connected to the support plate, the other end of the support arm is connected to one end of the clamping arm, the other end of the clamping arm is connected to the measuring ruler, one end of the bushing is connected to the support plate, one end of the shaft core is rotatably connected to the bushing, and the other end of the shaft core is used to assemble the motor rotor. The clamping arm is arranged around the shaft core, and the detection end of the measuring ruler is aligned with the detection position of the motor rotor.

2. The motor rotor runout inspection fixture according to claim 1, characterized in that, One end of the support arm is provided with a first groove, and a bolt is provided in the first groove. The bolt is connected to the support plate. Loosening the bolt allows the bolt to move relative to the first groove, and tightening the bolt allows the bolt to connect the support arm to the support plate.

3. The motor rotor runout inspection fixture according to claim 1, characterized in that, The other end of the support arm is provided with a first mounting hole, and one end of the clamping arm is provided in the first mounting hole.

4. The motor rotor runout inspection fixture according to claim 3, characterized in that, The other end of the support arm is also equipped with a tightening bolt, which passes through the first mounting hole and abuts against the side of one end of the clamping arm.

5. The motor rotor runout inspection fixture according to claim 1, characterized in that, The other end of the clamp arm is also provided with a second groove, and the inner wall of the second groove is provided with a slot on the opposite side, which is used to clamp the measuring ruler.

6. The motor rotor runout inspection fixture according to claim 5, characterized in that, A second mounting hole is also provided on the opposite side of the end of the second groove, and a locking bolt is fitted into the second mounting hole.

7. The motor rotor runout inspection fixture according to claim 1, characterized in that, A mounting groove is provided at the bottom center of one end of the bushing, and one end of the shaft core is rotatably connected to the mounting groove through a bearing; the other end of the bushing is a hollow structure, and the other end of the shaft core passes through the other end of the bushing.

8. The motor rotor runout inspection fixture according to claim 1, characterized in that, The edge of one end of the bushing is fixedly connected to the base by bolts.

9. The motor rotor runout inspection fixture according to claim 1, characterized in that, The measuring ruler is set to a micrometer.

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