Torsion test tool for stator core of permanent magnet synchronous motor
By designing a permanent magnet synchronous motor stator core torsion testing tooling including base, support, torsion disc and torque sensor, the problem of complex structure, large size and instability of the torsion testing tooling of the motor core in the prior art is solved, and the miniaturization, stability and low-cost test tooling is achieved, which is suitable for motor torsion testing at different heights.
Patent Information
- Application Number
- CN202422152102.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-03
AI Technical Summary
The existing motor core torsion force testing tooling has complex structure, large size, instable and high cost, making it difficult to meet the demand for motor torsion tests of different heights.
A permanent magnet synchronous motor stator core torsion testing tooling is designed, including a base, a first support, a second support, a torsion disc, a fixed disk, a torsion bar and a torsion sensor. Through simplifying the structure and optimizing the design, miniaturization and stability are achieved.
It achieves a simple structure, small size, and no interference with the mold. The product can be torsionally rotated, convenient to operate, strong applicability, low cost, and can meet the needs of motor torsion testing of different heights and stabilize product quality.
Smart Images
Figure CN223005922U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to machinery, in particular to motor manufacturing technology, and especially to a torsion test tooling for a permanent magnet synchronous motor stator core. Background Art
[0002] With the rapid development of new energy motor technology, people have put forward higher requirements for the operating conditions and efficiency of motors. As the mainstream core forming method of current new energy motors, the evaluation method of the structural strength of the welded stator core is particularly important. The evaluation methods of the structural strength of the welded stator core are mainly the drawing force and the penetration depth and width. In addition, the torsional force of the core is also one of the ways to evaluate the welding strength of the core.
[0003] During the operation of the motor, the stator core may be affected by various mechanical loads and vibrations, resulting in the generation of torsional torque.
[0004] In the prior art, the tooling for testing the torsional force of the motor core adopts a stepping motor torsion tooling, or a servo motor torsion tooling, or a mechanical slotting machine. Among them, the stepping motor torsion tooling and the servo motor torsion tooling can meet various torsion requirements, but their stability is slightly poor and the cost is high. The mechanical slotting machine is a single-stage gear transmission for acceleration. When the required torsion angle of the product by the customer is large, a multi-head worm and worm gear need to be used, which has high manufacturing difficulty, high cost and instability. If a single-head worm is used, only the transmission ratio of the external gear can be increased, that is, a very large gear and a very small gear need to be matched, resulting in the disadvantages of a large volume of the slotting machine and easy interference between the large gear and the mold. Summary of the Invention
[0005] The purpose of the utility model is to provide a torsion test tooling for a permanent magnet synchronous motor stator core, and the torsion test tooling for the permanent magnet synchronous motor stator core is to solve the technical problems of complex structure, large volume and insufficient stability of the torsion force test tooling in the prior art.
[0006] A torsion test tooling for a permanent magnet synchronous motor stator core of the utility model includes a base. A first support and a second support are arranged on the base. A first fixing plate is arranged on the first support. The axis of the first fixing plate is parallel to the horizontal plane. At least two first fixing pins are evenly distributed along the circumferential direction on the outer periphery of the first fixing plate. A torsion plate is arranged on the second support. The torsion plate and the fixing seat face each other and are parallel to each other. The torsion plate is rotationally connected to the second support through a rotating shaft. The rotating shaft is connected with a testing machine driving device through a torsion bar. A torsion sensor is arranged between the torsion bar and the testing machine driving device. The signal output end of the torsion sensor is connected to a controller. A second fixing plate is arranged on the torsion plate. Second fixing pins corresponding to the first fixing pins one by one are evenly distributed along the circumferential direction on the outer periphery of the second fixing plate.
[0007] Furthermore, a fixing base is provided on the first support, and the first fixing plate is arranged on the fixing base;
[0008] Furthermore, the number of the first fixing pins and the number of the second fixing pins are both in a factor relationship with the number of stator slots.
[0009] Furthermore, a sliding chassis is fixedly arranged at the bottom of the second support, and first long circular holes are respectively arranged on both sides of the sliding chassis. The long diameter direction of the first long circular holes is parallel to the axial direction of the torsion disc.
[0010] Furthermore, second long circular holes are respectively arranged on both sides of the base. The long diameter direction of the second long circular holes is perpendicular to the long diameter direction of the first long circular holes, and the first long circular holes are connected to the second long circular holes through bolts.
[0011] Furthermore, threaded holes are also arranged on the base, and the first long circular holes are connected to the threaded holes through bolts.
[0012] Furthermore, baffles are respectively and fixedly arranged on both sides of the fixing base between the base and the first support.
[0013] Furthermore, a bearing is arranged between the rotating shaft and the second support.
[0014] Furthermore, the torsion bar is fixedly connected or in interference fit with the rotating shaft.
[0015] Furthermore, both the first fixing pins and the second fixing pins are six in number.
[0016] Compared with the prior art, the effects of the present utility model are positive and obvious. A torsion test tooling for the stator core of a permanent magnet synchronous motor of the present utility model has a simple structure, a small volume, does not interfere with the mold, has a large torsional amplitude for the product, is convenient to operate, has strong applicability, low cost, can meet the torsion test requirements of motors with different heights, stabilizes the product quality, and is of great significance for evaluating the welding structure strength of the stator core of a permanent magnet synchronous motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 FIG. 1 is a first three-dimensional schematic diagram of a torsion test tooling for the stator core of a permanent magnet synchronous motor of the present utility model.
[0018] Figure 2 FIG. 2 is a second three-dimensional schematic diagram of a torsion test tooling for the stator core of a permanent magnet synchronous motor of the present utility model.
[0019] Figure 3 FIG. 3 is a front view schematic diagram of a torsion test tooling for the stator core of a permanent magnet synchronous motor of the present utility model.
[0020] Figure 4An upward view schematic diagram of a torsional test fixture for the stator core of a permanent magnet synchronous motor of the present utility model.
[0021] Figure 5 A top view schematic diagram of a torsional test fixture for the stator core of a permanent magnet synchronous motor of the present utility model.
[0022] Figure 6 A left view schematic diagram of a torsional test fixture for the stator core of a permanent magnet synchronous motor of the present utility model.
[0023] Figure 7 A right view schematic diagram of a torsional test fixture for the stator core of a permanent magnet synchronous motor of the present utility model. Specific embodiments
[0024] The present utility model will be further described below in conjunction with embodiments. However, the present utility model is not limited to these embodiments. Any similar structure and its similar variations of the present utility model shall be included in the protection scope of the present utility model. The use of directions such as up, down, front, back, left, and right in the present utility model is only for convenient and clear description and does not limit the technical solution of the present utility model.
[0025] As Figures 1-7 shown, a torsional test fixture for the stator core of a permanent magnet synchronous motor of the present utility model includes a base 1. A first support 2 and a second support 3 are arranged on the base 1. A first fixing plate 41 is fixedly arranged on the first support 2. The axis of the first fixing plate 41 is parallel to the horizontal plane. At least two first fixing pins 5 are evenly distributed along the circumferential direction on the outer periphery of the first fixing plate 41. A torsion disc 6 is arranged on the second support 3. The torsion disc 6 faces the fixing seat 4 and is parallel to it. The torsion disc 6 is rotatably connected to the second support 3 through a rotating shaft 7. The rotating shaft 7 is connected to a testing machine driving device (not shown in the figure) through a torsion bar 8. A torsion sensor (not shown in the figure) is arranged between the torsion bar 8 and the testing machine driving device. The signal output end of the torsion sensor is connected to a controller (not shown in the figure). A second fixing plate 9 is arranged on the torsion disc 6. Second fixing pins 10 corresponding one by one to the first fixing pins 5 are evenly distributed along the circumferential direction on the outer periphery of the second fixing plate 9.
[0026] Furthermore, a fixing seat 4 is arranged on the first support 2, and the first fixing plate 41 is fixedly arranged on the fixing seat 4.
[0027] Furthermore, the number of the first fixing pins and the number of the second fixing pins are both in a factor relationship with the number of stator slots.
[0028] Furthermore, a sliding chassis 13 is fixedly arranged at the bottom of the second support 3. First long circular holes 14 are respectively arranged on both sides of the sliding chassis 13. The major axis direction of the first long circular holes 14 is parallel to the axis of the torsion disc 6.
[0029] Further, second long circular holes 15 are respectively arranged on both sides of the base 1, the major axis direction of the second long circular holes 15 is perpendicular to the major axis direction of the first long circular holes 14, and the first long circular holes 14 are connected to the second long circular holes 15 through bolts.
[0030] The sliding chassis 13 can adjust its position back and forth and left and right on the base 1, and can be adjusted according to the height of the iron core to be measured.
[0031] Further, threaded holes are also arranged on the base 1, and the first long circular holes 14 are connected to the threaded holes through bolts. (The threaded holes on the base 1 can be through holes or non-through holes)
[0032] Further, baffles 11 are respectively and fixedly arranged on both sides of the fixed seat 4 between the base 1 and the first support 2.
[0033] Further, a bearing 12 is arranged between the rotating shaft 7 and the second support 3 to ensure the stability of the rotating shaft 7 during the working process.
[0034] Further, the torsion bar 8 is fixedly connected or interference-fitted with the rotating shaft 7.
[0035] Further, both the first fixing pins 5 and the second fixing pins 10 are six in number, and are spaced 60° from each other.
[0036] Further, both the first fixing pins 5 and the second fixing pins 10 are in the shape of a cuboid.
[0037] Specifically, the driving device, torsion sensor, controller, etc. of the testing machine in this embodiment all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.
[0038] The structure, quantity, and distribution of the second fixing pins 10 on the torsion disk 6 are the same as those of the first fixing pins 5 on the fixed seat 4, and they correspond one by one when installing the iron core. The opposite surfaces of the torsion disk 6 and the fixed seat 4 are parallel to each other and are both perpendicular to the horizontal plane.
[0039] The working principle of this embodiment:
[0040] Clamp one side of the stator slot of the stator iron core into the first fixing pin 5. Then adjust the sliding chassis 13 to a suitable position, fix the sliding chassis 13 and the base 1 with bolts, and restrain the other side of the stator slot of the iron core with the second fixing pin 10 on the torsion disk 6. Thus, both ends of the iron core are fixed on the torsion fixture. Next, apply a load to the torsion bar 8 through the testing machine, the rotating shaft 7 rotates with the torsion bar 8 and transmits the torsion to the torsion disk 6, the iron core twists with the second fixing pin 10 of the torsion disk 6, and the torsion data is input into the computer terminal (controller) through the torsion sensor, so as to finally realize the test of the torsional force of the stator iron core.
[0041] A torsion test tooling for the stator core of a permanent magnet synchronous motor of the utility model has a simple structure, small volume, does not interfere with the mold, has a large torsional amplitude for the product, is convenient to operate, has strong applicability, low cost, can meet the torsional test requirements of motors with different heights, stabilizes the product quality, and is of great significance for evaluating the welding structure strength of the core of the permanent magnet synchronous motor.
Claims
1. A permanent magnet synchronous motor stator core torsion test fixture, characterized in that: The invention comprises a base, on which a first support and a second support are arranged, a first fixed disk is arranged on the first support, the axial direction of the first fixed disk is parallel to the horizontal plane, at least two first fixed pins are evenly distributed along the circumferential direction on the outer circumference of the first fixed disk, a torsion disk is arranged on the second support, the torsion disk and the fixed support are arranged opposite to each other and parallel to each other, the torsion disk is rotatably connected to the second support through a rotating shaft, the rotating shaft is connected to a testing machine driving device through a torsion bar, a torque sensor is arranged between the torsion bar and the testing machine driving device, a signal output end of the torque sensor is connected to a controller, a second fixed disk is arranged on the torsion disk, and second fixed pins corresponding to the first fixed pins are evenly distributed along the circumferential direction on the outer circumference of the second fixed disk.
2. The permanent magnet synchronous motor stator core torsion test fixture according to claim 1, characterized in that: A fixing seat is arranged on the first support, and the first fixing plate is arranged on the fixing seat.
3. The permanent magnet synchronous motor stator core torsion test fixture according to claim 1, characterized in that: The number of the first fixing pins and the number of the second fixing pins are both in a factorial relationship with the number of the stator slots.
4. The permanent magnet synchronous motor stator core torsion test fixture according to claim 1, characterized in that: A sliding chassis is fixedly arranged at the bottom of the second support, and first oblong holes are respectively arranged on both sides of the sliding chassis, and the major diameter direction of the first oblong holes is parallel to the axial direction of the torsion plate.
5. The permanent magnet synchronous motor stator core torsion test fixture according to claim 4, characterized in that: Second oblong holes are respectively arranged on both sides of the base, the major diameter direction of the second oblong hole is perpendicular to the major diameter direction of the first oblong hole, and the first oblong hole is connected to the second oblong hole by bolts.
6. The permanent magnet synchronous motor stator core torsion test fixture according to claim 4, characterized in that: The base is also provided with a threaded hole, and the first oblong hole is connected to the threaded hole through a bolt.
7. The permanent magnet synchronous motor stator core torsion test fixture according to claim 1, characterized in that: Baffles are fixedly arranged on both sides of the fixing seat between the base and the first support.
8. The permanent magnet synchronous motor stator core torsion test fixture according to claim 1, characterized in that: A bearing is arranged between the rotating shaft and the second support.
9. The permanent magnet synchronous motor stator core torsion test fixture according to claim 1, characterized in that: The torsion bar is fixedly connected or interference fit with the rotating shaft.
10. The permanent magnet synchronous motor stator core torsion test fixture according to claim 1, characterized in that: There are six first fixing pins and six second fixing pins.