Comprehensive testing machine tool for motor stator

Abstract

The utility model relates to a motor stator comprehensive test machine tool. The clamping device comprises a base and three pairs of clamping modules, a clamping platform is arranged on the base, three guide grooves are formed in the clamping platform, a rotating disc is rotationally assembled at the bottom of the clamping platform, strip-shaped teeth are arranged on the upper surface of the rotating disc, a servo motor for driving the rotating disc to rotate is further arranged on the clamping platform, and a lower abutting block is further arranged on the upper surface of the clamping platform; the clamping module comprises a sliding seat, a mounting seat and a clamping gripper, a downward pressing air cylinder is further arranged on the mounting seat, a downward pressing block is fixed to a telescopic rod of the downward pressing air cylinder, and clamping teeth meshed with the strip-shaped teeth are arranged at the bottom of the sliding seat. According to the utility model, the full automation of clamping and positioning is realized, so that the clamping efficiency is higher, meanwhile, the clamping device is suitable for stators of various sizes, and the universality is very high.

Description

Technical Field

[0001] The utility model relates to a motor stator tooling, in particular to a tooling for a motor stator comprehensive tester. Background Art

[0002] During the operation of a new energy vehicle motor, it is subjected to vibrations caused by different excitation sources, such as road surface excitation, vibrations caused by the reduction gearbox, vibrations caused by the motor itself, etc. In order to test the mechanical structure reliability of the motor stator under vibration load, it is necessary to conduct vibration tests on the motor stator. When conducting vibration tests on the stator assembly, the stator assembly needs to be fixed on the vibration table through a tooling. The tooling needs to ensure sufficient stiffness and the mass of the tooling itself cannot be too high to save test costs.

[0003] Currently, most enterprises use stator vibration test toolings with poor versatility. When conducting vibration tests on different types of motor stators, it is necessary to separately design and adapt toolings for the tests, which is time-consuming and costly in the R & D process. For this reason, someone has publicly disclosed "a general-purpose motor stator vibration test tooling" (Publication No.: CN218381507U). This tooling adopts the form of vertical axial arrangement of the stator, making the center of gravity of the stator to be measured as close as possible to the vibration table surface, ensuring the stiffness of the tooling while also reducing the mass of the tooling. The tooling includes a vibration table adapter plate, a cylindrical stator mounting base, an upper cover plate, a three-phase wire adapter block, radial and axial adjustment bushings, etc. This tooling is designed with a vibration table adapter plate that can be adapted to different vibration tables. By replacing the three-phase wire adapter block, radial adjustment bushing, and axial adjustment bushing, vibration tests on stators with different outer diameters, different core stack lengths, and different copper wire busbar designs can be achieved, shortening the tooling design time and saving test costs.

[0004] However, when using this tooling, manual disassembly and assembly are required. In particular, when installing and disassembling the radial adjustment bushing and the axial adjustment bushing, due to the relatively high assembly accuracy, it is relatively difficult to disassemble and assemble, further affecting the detection efficiency. Summary of the Invention

[0005] The utility model provides a tooling for a motor stator comprehensive tester, which solves the problems in the prior art that manual positioning of the stator is required during use and the disassembly and assembly efficiency of related positioning parts is low.

[0006] The above technical problems of the present utility model are mainly solved by the following technical solutions: A tooling for an integrated testing machine of a motor stator, comprising a base and three sets of clamping modules; A clamping platform is provided on the base, and three radially circularly arrayed guiding grooves are opened on the clamping platform. A turntable is vertically rotatably assembled at the bottom of the clamping platform. A plurality of spiral-shaped strip teeth are provided on the upper surface of the turntable. An external gear or an internal gear coaxial with the turntable is provided on the side wall of the turntable. A servo motor is further provided on the clamping platform, and a transmission gear meshing with the external gear or the internal gear is provided on the servo motor. A lower abutting block is further provided on the upper surface of the clamping platform; The clamping module comprises a sliding seat slidably matched with the guiding groove, a mounting seat fixed on the sliding seat, and a clamping gripper. A vertical slot is provided on the mounting seat. The clamping gripper is composed of a plug-in body and a clamping body. The plug-in body is slidably inserted into the slot. A pressing cylinder is further provided on the mounting seat, and a pressing block is fixed on the telescopic rod of the pressing cylinder. A tooth engaging with the strip teeth is provided at the bottom of the sliding seat.

[0007] The present utility model can realize its forward or reverse rotation by program control of the servo motor, and then drive the turntable to rotate synchronously. The strip teeth on the turntable will drive the three sliding seats to feed and slide along the guiding grooves synchronously, so as to realize the clamping or loosening actions of the three clamping grippers. When the three clamping grippers move to the outermost side, this is the loading and unloading gear of the present utility model. The motor stator is composed of a stator core and a stator winding. The stator core is generally a hollow cylindrical structure, and the stator winding is located in the inner region of the stator core. The present utility model is used for vertically clamping and fixing the stator core. The specific operation of installation and positioning is as follows: First, switch the present utility model to the loading and unloading gear, manually place the stator on the present utility model, ensure that the bottom of the stator core is placed on the lower abutting block, and then perform the clamping program. The three sets of clamping modules will gradually approach the outer wall of the stator core until the three clamping bodies simultaneously abut against the outer wall of the stator core. At this time, the axis of the stator core is completely fixed. Then, the pressing cylinder controls the pressing block to descend and press on the upper surface of the stator core. At this time, the stator is completely fixed. On the contrary, when the stator needs to be unloaded after being detected, the pressing cylinder rises and resets, and then the loosening program of the servo motor is performed, and the stator is taken away manually. The clamping and positioning of the present utility model are fully automated, so it has a high clamping efficiency, and at the same time adapts to stators of various sizes, and has very high versatility.

[0008] Further, the outer contour of the plug-in body is cylindrical, and the shape of the slot is an arc slot with an open structure, so that the plug-in body can rotate circumferentially relative to the slot; A clamping concave surface is provided on the clamping body. Through the above technical solutions, the plug-in body can rotate freely, and such a design is beneficial to the clamping body to center itself automatically, ensuring that the clamping body and the outer wall of the stator can be uniformly stressed.

[0009] Further, there are three guiding keys radially and circumferentially arrayed at the bottom of the clamping platform that abuts against the lower block, and a sliding groove that slidably mates with the guiding keys is provided at the bottom of the lower block. For stators of different sizes, the position of the lower block can be adjusted by sliding to adapt.

[0010] Further, a number of positioning holes are provided on the guiding keys, a jack that penetrates through the sliding groove is provided on the upper surface of the lower block, and a positioning pin that partially extends into the positioning hole is inserted into the jack. This can ensure that the relative positions of the lower block and the guiding keys do not change.

[0011] Therefore, the present utility model has the following characteristics compared with the prior art: 1. The clamping and positioning of the present utility model are fully automated, so it has a high clamping efficiency, and at the same time, it can adapt to stators of various sizes, having high versatility; 2. The clamping gripper is inserted and mated with the mounting seat, which is convenient for quickly replacing the clamping gripper to adapt to stators of different sizes or for replacing a damaged clamping gripper; 3. The plug-in body can rotate freely, and this design is beneficial for the clamping body to center itself independently, ensuring that the outer wall of the clamping body and the stator can be evenly stressed. Description of the Drawings

[0012] Att Figure 1 is a schematic structural view of the present utility model;

[0013] Att Figure 2 is a top view of the present utility model;

[0014] Att Figure 3 is Att Figure 2 is a sectional view taken along the A-A direction of Att. Detailed Embodiments

[0015] The technical solutions of the present utility model will be further specifically described below through examples in conjunction with the drawings.

[0016] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0017] Example 1: See Figure 1 and Figure 3, A tooling for a comprehensive testing machine of a motor stator, comprising a base 100 and three sets of clamping modules 200; a clamping platform 110 is provided on the base, and three radially circularly arrayed guiding grooves 111 are opened on the clamping platform. A turntable 120 is vertically rotatably assembled at the bottom of the clamping platform. A number of spirally distributed strip teeth 121 are provided on the upper surface of the turntable. An internal gear 122 coaxial with the turntable is provided on the side wall of the turntable. A servo motor 130 is also provided on the clamping platform, and a transmission gear 131 meshing with the internal gear is provided on the servo motor. A lower abutting block 140 is further provided on the upper surface of the clamping platform; The clamping module includes a sliding seat 210 slidably matched with the guiding groove, a mounting seat 220 fixed on the sliding seat, and a clamping gripper 230. The clamping gripper is made of aluminum alloy, and the material is softer than the stator, so it is not easy to damage the stator. A vertical slot 221 is provided on the mounting seat. The clamping gripper is composed of a plug-in body 231 and a clamping body 232. The plug-in body is slidably inserted into the slot. A downward pressing cylinder 240 is also provided on the mounting seat, and a downward pressing block 241 is fixed on the telescopic rod of the downward pressing cylinder. A tooth 211 meshing with the strip teeth is provided at the bottom of the sliding seat.

[0018] In this embodiment, the forward or reverse rotation of the servo motor can be realized through program control, and then the turntable is driven to rotate synchronously. The strip teeth on the turntable will drive the three sliding seats to feed and slide along the guiding grooves synchronously, so as to realize the clamping or loosening actions of the three clamping grippers. When the three clamping grippers move to the outermost side, this is the loading and unloading gear of this embodiment. The motor stator is composed of a stator core and a stator winding. The stator core is generally a hollow cylindrical structure, and the stator winding is located in the inner region of the stator core. This embodiment is used to vertically clamp and fix the stator core. The specific operation of installation and positioning is as follows: first, switch this embodiment to the loading and unloading gear, manually place the stator on this embodiment, ensure that the bottom of the stator core is placed on the lower abutting block, and then perform the clamping program. The three sets of clamping modules will gradually approach the outer wall of the stator core until the three clamping bodies are in contact with the outer wall of the stator core at the same time. At this time, the axis of the stator core is completely fixed. Then, the downward pressing cylinder controls the downward pressing block to descend and press on the upper surface of the stator core. At this time, the stator is completely fixed. On the contrary, when the stator needs to be unloaded after the detection is completed, the downward pressing cylinder rises and resets, and then the loosening program of the servo motor is performed, and the stator is taken away manually. The clamping and positioning of this embodiment are fully automated, so it has a high clamping efficiency, and at the same time, it is suitable for stators of various sizes and has high versatility.

[0019] See Figure 1 , The outer contour of the plug-in body is cylindrical, and the outer shape of the slot is an arc groove with an open structure, so that the plug-in body can rotate circumferentially relative to the slot; A clamping concave surface 233 is provided on the clamping body. Through the above technical solution, the plug-in body can rotate freely, and such a design is beneficial for the clamping body to center itself automatically, ensuring that the clamping body and the outer wall of the stator can be evenly stressed.

[0020] See Figure 1 , three guiding keys 112 which are radially and circumferentially arrayed are provided at the bottom of the lower abutting block on the clamping platform. A sliding groove 141 which is slidably matched with the guiding keys is provided at the bottom of the lower abutting block. A protruding limiting part 144 is provided at the outer end of the lower abutting block. For stators of different sizes, the position of the lower abutting block can be adjusted by sliding to adapt.

[0021] See Figure 1 、 Figure 2 And Figure 3 , a plurality of positioning holes 113 are provided on the guiding keys. A jack 142 which penetrates the sliding groove is provided on the upper surface of the lower abutting block. A positioning pin 143 which partially extends into the positioning hole is inserted into the jack. This can ensure that the relative position between the lower abutting block and the guiding keys does not change.

[0022] See Figure 3 , a bottom plate 150 which is fixed to the clamping platform is further provided on the base. The servo motor is fixed to the bottom of the bottom plate; a circular track 151 is provided on the upper surface of the bottom plate. The bottom of the turntable is adapted to the circular track.

[0023] See Figure 2 , a first proximity sensor 160 and a second proximity sensor 170 are provided on the base, facing the inner end and the outer end of the sliding seat respectively. The two proximity sensors are used to detect the position of the sliding seat to prevent the moving position from exceeding the safe range.

[0024] It will be obvious to those skilled in the art that the present utility model can be changed in various ways. Such changes are not considered to deviate from the scope of the present utility model. All such modifications that are obvious to those skilled in the art will be included within the scope of the present claims.

Claims

1. A tooling for an integrated testing machine of a motor stator, characterized in that: It includes a base and three pairs of clamping modules; a clamping platform is provided on the base, and three guiding grooves distributed in a radial circular array are formed on the clamping platform. A turntable is vertically rotatably assembled at the bottom of the clamping platform. A number of spiral-shaped strip teeth are provided on the upper surface of the turntable. An external gear or an internal gear coaxial with it is provided on the side wall of the turntable. A servo motor is also provided on the clamping platform. A transmission gear meshing with the external gear or the internal gear is provided on the servo motor. A lower abutting block is also provided on the upper surface of the clamping platform; the clamping module includes a sliding seat slidably matched with the guiding groove, a mounting seat fixed on the sliding seat, and a clamping gripper. A vertical slot is provided on the mounting seat. The clamping gripper is composed of a plug-in body and a clamping body. The plug-in body is slidably inserted into the slot. A pressing cylinder is also provided on the mounting seat. A pressing block is fixed on the telescopic rod of the pressing cylinder. A cog engaging with the strip teeth is provided at the bottom of the sliding seat.

2. The fixture of the integrated testing machine for the motor stator according to claim 1, wherein: The outer contour of the plug-in body is cylindrical, and the shape of the slot is an arc groove with an open structure, so that the plug-in body can rotate circumferentially relative to the slot; a clamping concave surface is provided on the clamping body.

3. The tooling for the comprehensive testing machine of the motor stator according to claim 1 or 2, characterized in that: Three guiding keys distributed in a radial circular array are provided at the bottom of the lower abutting block on the clamping platform, and a sliding groove slidably matched with the guiding keys is provided at the bottom of the lower abutting block.

4. The tooling for the comprehensive testing machine of the motor stator according to claim 3, characterized in that: A number of positioning holes are provided on the guiding keys, a jack penetrating through the sliding groove is provided on the upper surface of the lower abutting block, and a positioning pin partially extending into the positioning hole is inserted into the jack.

5. The tooling for the comprehensive testing machine of the motor stator according to claim 1, characterized in that: A bottom plate fixed to the clamping platform is also provided on the base; the servo motor is fixed to the bottom of the bottom plate; a circular track is provided on the upper surface of the bottom plate, and the bottom of the turntable is adapted to the circular track.

6. The tooling for the comprehensive testing machine of the motor stator according to claim 1, characterized in that: A first proximity sensor and a second proximity sensor are provided on the base, facing the inner end and the outer end of the sliding seat respectively.

Images