Motor stator core hot-jacketing tool
By designing a motor stator core heat fitting fixture with adjustable support claws and scale indicator needles, the problems of large coil heads and inconsistent models in low-voltage high-power motors were solved, achieving flexible adaptation and cost savings for the motor stator core.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANGZHOU SHUGUANG PHOTOELECTRICITY AUTOMATION CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-02
AI Technical Summary
Existing motor stator core heat fitting fixtures are difficult to adapt to the large coil heads of low-voltage, high-power motors, and cannot be used interchangeably with different motor models, resulting in high costs and inflexibility.
A heat-fitting fixture for motor stator cores, comprising a vertical support base and radially movable support claws, was designed. The position of the support claws can be adjusted by a drive mechanism to accommodate motor stator cores of different sizes, and quick matching can be achieved through a detachable support block and a scale indicator.
It enables flexible adaptation to stator cores of different motor models, reduces replacement costs, and improves production efficiency and applicability.
Smart Images
Figure CN224319202U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor assembly tooling technology, specifically a motor stator core heat fitting tooling. Background Technology
[0002] The stator heat-shrinking process has been widely used in the motor industry for the process of heat-shrinking the stator core housing. Stator heat-shrinking generally requires the use of tooling to fix and support the stator core.
[0003] Motor stator heat fitting fixtures typically use cylindrical thin-walled cylinders to fix the stator core. However, because the internal coil diameter of low-voltage, high-power motor stator cores is relatively large and the number of coils is relatively large, the coil end caps are relatively large, making it difficult for general cylindrical heat fitting fixtures to support such stator cores.
[0004] Meanwhile, since different models of motors have different sizes and lengths, general heat fitting fixtures can only meet the needs of motors with a specific flange. Different flanges cannot be used interchangeably, which cannot meet the requirements of universality and is detrimental to cost control. Utility Model Content
[0005] The purpose of this invention is to provide a heat-shrinking fixture for motor stator cores, which can effectively solve the problems in the background art.
[0006] The technical solution to achieve the above objective is: a heat fitting fixture for a motor stator core, characterized in that: it includes a vertically upward-arranged support base, a cylindrical chuck body is fixedly installed on the support base, a plurality of vertically upward-arranged support claws are arranged on the chuck body along the circumference, the support claws are radially movable and supported on the chuck body, and a cylindrical core chuck is formed between the support claws for fitting the stator core, and a drive mechanism for driving the support claws radially is installed in the chuck body.
[0007] Furthermore, the chuck body includes a chuck base and a chuck base connected to each other. The chuck base is fixedly installed with the support base. A drive mechanism mounting cavity is formed between the chuck base and the chuck base. The drive mechanism includes a large bevel gear rotatably installed in the chuck base. The large bevel gear has a ring of bevel teeth on one side facing the chuck base and a spiral groove on the other side. A small bevel gear is rotatably installed on the outer wall of the chuck body. The small bevel gear meshes with the large bevel gear for transmission.
[0008] The chuck body has circumferentially distributed grooves on the side facing away from the support base. The number of grooves is the same as the number of support claws, and sliders are slidably mounted on them. Guide rails and guide grooves are provided between the sliders and the grooves. The bottom end of the slider is located in the chuck body and is provided with meshing teeth that cooperate with the helical groove transmission. The support claws are detachably connected to the sliders by bolts.
[0009] Furthermore, the outer end of the small bevel gear protrudes from the chuck body and is provided with a hexagonal hole.
[0010] Furthermore, the support claw is connected to the corresponding slider via an L-shaped support block. The horizontal section of the support block is fixed to the corresponding slider by bolts. The cross-section of the vertical section of the support block is arc-shaped, and the outer ring is located on the same circumference to form a housing chuck for mounting the motor housing. The support claw is connected to the inner ring of the corresponding support block. The support claw extends forward from the support block, and a cylindrical iron core chuck is formed between the extended ends of the support claw for mounting the stator iron core.
[0011] Furthermore, a first spacer is provided at the included angle of the support block.
[0012] Furthermore, the end of the support block away from the slider is provided with a notch located on the outer ring of the support block, and a second spacer is fixedly installed in the notch.
[0013] Furthermore, the outer wall of the support block and the outer wall of the end of the support claw extending out of the support block are both provided with raised textures to improve friction.
[0014] Furthermore, the chuck base is provided with a scale arranged in the radial direction, and the slider is provided with an indicator needle that cooperates with the scale.
[0015] This invention uses the rotation of a small bevel gear to drive the rotation of a large bevel gear, which in turn drives the sliding block to slide, thereby adjusting the radial position of the support claw and forming cylinders of different sizes. This solves the technical problem in the prior art where the coil head is too large and difficult to assemble.
[0016] The support claw of this utility model is detachably connected to the slider through the support block, which can be quickly disassembled and replaced. It is suitable for more types of motors, saves costs, and has high reliability, making it suitable for small-batch, multi-variety production modes.
[0017] This invention features pre-engraved scales representing the size of the motor flange on the chuck base. In use, simply adjust the threaded slider pointer to align with the corresponding scale. It is simple, clear, and easy to operate. Attached Figure Description
[0018] Figure 1 This is a cross-sectional view of the present invention;
[0019] Figure 2 A perspective view of the present invention in use;
[0020] Figure 3 for Figure 2 Side view;
[0021] Figure 4 for Figure 2 A sectional view. Detailed Implementation
[0022] like Figure 1-4 As shown, this utility model includes a vertically upward-arranged support base 1, a cylindrical chuck body 2 fixedly mounted on the support base 1, a plurality of vertically upward-arranged support claws 3 arranged circumferentially on the chuck body 2, the support claws 3 being radially movable and supported on the chuck body 2, a cylindrical iron core chuck 15 being formed between the support claws 3, the iron core chuck 15 being used to mount the stator iron core 14, and a drive mechanism 4 for driving the support claws 3 radially is installed inside the chuck body 2.
[0023] The chuck body 2 includes a chuck base 5 and a chuck base 6 connected to each other. The chuck base 5 is fixedly installed on the support base 1. A drive mechanism mounting cavity is formed between the chuck base 5 and the chuck base 6. The drive mechanism 4 includes a large bevel gear 7 rotatably installed in the chuck base 6. The large bevel gear 7 has a ring of bevel teeth 8 on one side facing the chuck base 5 and a spiral groove 9 on the other side. A small bevel gear 10 is rotatably installed on the outer wall of the chuck body 2 (the specific rotatable installation method is a conventional existing structure, and can be as follows). Figure 1 The stepped limiting structure mentioned above (the small bevel gear 10 meshes with the bevel teeth 8 of the large bevel gear 7 for transmission, the outer end of the small bevel gear 10 protrudes outward from the chuck body 2 and is provided with a hexagonal hole).
[0024] The chuck body 2 has circumferentially distributed sliding grooves 11 on the side facing away from the support base 1. The number of sliding grooves 11 is the same as the number of support claws 3, which is three in total. Each of the three grooves has a slider 12 slidably mounted on it. The slider 12 and the sliding groove 11 are provided with mutually cooperating guide rails and guide grooves (conventional technology). The bottom end of the slider 12 is located inside the chuck body 2 and is provided with meshing teeth 13 that are in transmission cooperation with the spiral groove 9. The support claws 3 are connected to the corresponding sliders 12 by L-shaped support blocks 17. The support claws 3 and the support blocks 17 are fixedly connected. The horizontal section of the support block 17 is fixed to the corresponding slider 12 by bolts. The vertical section of the support block 17 is arc-shaped. The outer ring of the vertical section of the support block 17 is located on the same circumference to form a housing chuck 19 for mounting the motor housing 18. The support claws 3 are connected to the inner ring of the support block 17 and extend upward from the support block 17. The extended ends of the support claws 3 form a cylindrical iron core chuck 15 for mounting the stator iron core 14.
[0025] As a further improvement of this embodiment, a first spacer 20 is provided at the included angle position of the support block 17, and a notch is provided at the end of the support block 17 away from the slider 12 on the outer ring. A second spacer 21 is fixedly provided in the notch. The outer wall of the support block 17 and the outer wall of the end of the support claw 3 extending out of the support block 17 are respectively provided with raised textures 22 for improving friction.
[0026] The chuck base 6 is provided with a scale 23 arranged in the radial direction. The slider 12 is provided with an indicator needle 24 that matches the scale 23. The indicator needle 24 corresponds to the outer circle of the motor flange. In use, the indicator needle 24 on the slider 12 can be adjusted to the corresponding scale 23 according to the diameter of the motor flange.
[0027] During operation, replace the support block 17 and support claw 3 that match the motor, adjust the position of the iron core chuck 15 so that the outer diameter is smaller than that of the stator iron core 14, put the stator iron core 14 on the iron core chuck 15 and limit and support it through the second spacer 21, and then put the motor housing 35 on the outside of the stator iron core 14. The motor housing 35 and the stator iron core 14 are limited by the stop 26 between them.
[0028] The support claw 3 of this utility model is detachably connected to the slider 12 via the support block 17. The support block 17 and the support claw 3 can be quickly disassembled and replaced, making it suitable for more types of motors.
Claims
1. A heat-shrinking fixture for a motor stator core, characterized in that: It includes a vertically upward-arranged support base, on which a cylindrical chuck body is fixedly mounted. Multiple vertically upward-arranged support claws are arranged circumferentially on the chuck body. The support claws are radially movable and supported on the chuck body. A cylindrical iron core chuck is formed between the support claws for mounting the stator iron core. A drive mechanism for driving the support claws radially is installed inside the chuck body.
2. The motor stator core heat fitting tooling according to claim 1, characterized in that: The chuck body includes a chuck base and a chuck base connected to each other. The chuck base is fixedly installed with a support base. A drive mechanism mounting cavity is formed between the chuck base and the chuck base. The drive mechanism includes a large bevel gear rotatably installed in the chuck base. The large bevel gear has a ring of bevel teeth on one side facing the chuck base and a spiral groove on the other side. A small bevel gear is rotatably installed on the outer wall of the chuck body. The small bevel gear meshes with the large bevel gear for transmission. The chuck body has circumferentially distributed grooves on the side facing away from the support base. The number of grooves is the same as the number of support claws, and sliders are slidably mounted on them. Guide rails and guide grooves are provided between the sliders and the grooves. The bottom end of the slider is located in the chuck body and is provided with meshing teeth that cooperate with the helical groove transmission. The support claws are detachably connected to the sliders by bolts.
3. The motor stator core heat fitting tooling according to claim 2, characterized in that: The outer end of the small bevel gear protrudes from the chuck body and is provided with a hexagonal hole.
4. The motor stator core heat fitting fixture according to claim 2, characterized in that: The support claw is connected to the corresponding slider via an L-shaped support block. The horizontal section of the support block is fixed to the corresponding slider with bolts. The vertical section of the support block has an arc-shaped cross-section, and the outer ring is located on the same circumference to form a housing chuck for mounting the motor housing. The support claw is connected to the inner ring of the corresponding support block. The support claw extends forward from the support block, and the extended ends of the support claw form a cylindrical iron core chuck for mounting the stator iron core.
5. The motor stator core heat fitting tooling according to claim 4, characterized in that: A first spacer is provided at the included angle of the support block.
6. The motor stator core heat fitting tooling according to claim 4, characterized in that: The support block has a notch located on the outer ring of the block at the end away from the slider, and a second spacer is fixedly installed in the notch.
7. The motor stator core heat fitting tooling according to claim 4, characterized in that: The outer wall of the support block and the outer wall of the end of the support claw extending out of the support block are both provided with raised textures to improve friction.
8. The motor stator core heat fitting tooling according to claim 4, characterized in that: The chuck base is provided with a scale arranged in the radial direction, and the slider is provided with an indicator needle that cooperates with the scale.