Quick remodeling tool for hot jacket of motor stator

Abstract

The utility model discloses a quick remodeling tool for a motor stator hot jacket, and aims to provide a quick remodeling tool which can be compatible with the processing of hot jackets of different motor models, can reduce the manufacturing and processing cost of the tool, reduces the storage space of the tool, effectively shortens the remodeling time of the tool when the models of motors are switched, and improves the working efficiency. The rapid remodeling tool for the motor stator hot jacket aims to improve the processing efficiency of the hot jacket. The device comprises a bottom plate; the positioning column is arranged on the bottom plate and extends up and down; the positioning sleeve slidably sleeves the positioning column, and the lower part of the outer wall of the positioning sleeve is provided with a reference step surface; the lifting piece is in sliding connection with the positioning column, can lift up and down along the positioning column and is connected with the positioning sleeve; the lifting screw drives the lifting part and the positioning sleeve to lift up and down, the lifting screw is rotationally arranged on the positioning column, the axis of the lifting screw is parallel to or coaxial with the positioning column, and the lifting screw is in threaded connection with the lifting part.

Description

Technical Field

[0001] The utility model relates to the technical field of motor production, in particular to a motor stator shrink sleeve rapid changeover tooling. Background Art

[0002] When the motor housing and the motor wire embedded stator are heat-fitted, heat-fitting equipment is required for heat-fitting processing. Heat-fitting equipment includes heat-fitting tooling. The current heat-fitting tooling includes a base plate and a positioning sleeve. The lower part of the outer wall of the positioning sleeve is provided with a reference step surface, and the positioning sleeve is detachably mounted on the base plate by a number of fixing bolts (generally 4). In actual use, the iron core of the motor wire embedded stator is sleeved on the positioning sleeve, and the lower end of the iron core is supported on the reference step surface, so as to position the motor wire embedded stator; the motor housing is sleeved on the outside of the motor wire embedded stator, and the motor housing is supported on the base plate to achieve the positioning of the motor housing.

[0003] Since motor models are not unique, the inner diameter of the core of the motor wire embedded stator of a certain type of motor is the same. Due to the different spacing between the end face of the motor housing and the end face of the core of the motor wire embedded stator, there are hundreds of motor models. From the perspective of lean production and site restrictions, the same shrink fit tooling needs to be compatible with multiple motor models. The current shrink fit tooling uses replacement of positioning sleeves to be compatible with hundreds of motor models. In this way, a large number of positioning sleeves need to be produced, the tooling manufacturing and processing costs are high, and the tooling storage occupies a large area.

[0004] On the other hand, when the motor model is switched, the entire shrink fit tooling needs to be removed from the shrink fit equipment, and then the positioning sleeve of the tooling needs to be removed. During this process, 4 fixing bolts need to be removed, and then the positioning sleeve of the matching model needs to be installed. During this process, 4 fixing bolts need to be installed; then, the entire shrink fit tooling needs to be reinstalled on the shrink fit equipment; the operation steps are cumbersome, and each tooling replacement time generally takes more than 10 minutes. The tooling replacement time is long when the motor model is switched, which affects production efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a motor stator shrink fitting quick-change tool that is compatible with shrink fitting processing of different motor models, can reduce tool manufacturing and processing costs, reduce tool storage space, and effectively shorten tool changeover time when the motor model is switched, so as to improve the shrink fitting processing efficiency.

[0006] The technical solution of the utility model is:

[0007] A motor stator shrink sleeve quick change tooling, comprising:

[0008] Base plate;

[0009] Positioning columns are arranged on the bottom plate and extend upward and downward;

[0010] The positioning sleeve and the sliding sleeve are arranged on the positioning column, and the lower part of the outer wall of the positioning sleeve is provided with a reference step surface;

[0011] A lifting member slidably connected to the positioning column, which can be lifted up and down along the positioning column, and the lifting member is connected to the positioning sleeve;

[0012] The lifting screw drives the lifting member and the positioning sleeve to move up and down. The lifting screw is rotatably arranged on the positioning column. The axis of the lifting screw is parallel or coaxial with the positioning column. The lifting screw is connected to the lifting member by a thread. The specific use of a motor stator heat-shrink fast-changing tooling of the present scheme is as follows: the iron core of the motor wire-embedded stator is sleeved on the positioning sleeve, and the lower end of the iron core is supported on the reference step surface, so that the motor wire-embedded stator is positioned by the positioning sleeve; the motor housing is sleeved on the outside of the motor wire-embedded stator, and the motor housing is supported on the bottom plate to realize the positioning of the motor housing.

[0013] When the motor switches models, the lifting member and the positioning sleeve are driven to move up and down along the positioning column by rotating the lifting screw, and then the height of the reference step surface of the positioning sleeve is adjusted (i.e., the distance between the reference step surface and the bottom plate is adjusted) to match the current motor model, so as to be compatible with various motor models. Compared with the prior art, when the motor switches models, it is necessary to disassemble the entire heat-shrink tooling from the heat-shrink equipment, disassemble the original positioning sleeve, install the new positioning sleeve, and then reinstall the heat-shrink tooling to the heat-shrink equipment, which has cumbersome operating steps and a long tooling change time when the motor switches models, affecting production efficiency; the motor stator heat-shrink fast-changing tooling of the present application only needs to drive the height position of the lifting member and the positioning sleeve by rotating the lifting screw when the motor switches models. It is not only easy to operate, but also can effectively shorten the tooling change time when the motor switches models to improve the heat-shrink processing efficiency; and there is no need to make a large number of positioning sleeves, which can effectively reduce the tooling manufacturing and processing costs and reduce the tooling storage space.

[0014] Preferably, the positioning column is a hollow structure, and its inner hole forms a receiving hole. A guide groove extending along the axial direction of the positioning column is provided on the side wall of the positioning column. The lifting member is located in the receiving hole, and the lifting member passes through the guide groove and is connected to the positioning sleeve so that the lifting member slides up and down along the guide groove. In this way, on the one hand, the lifting member can be ensured to slide up and down along the guide groove stably; on the other hand, the compactness of the structure of the tooling can be effectively improved.

[0015] Preferably, a cover plate is provided at the upper end of the receiving hole, an axial hole is provided in the middle of the cover plate, the lifting screw passes through the axial hole, the lifting screw is rotatably arranged in the axial hole, a lifting screw hole is provided on the lifting member, and the lower part of the lifting screw extends into the receiving hole and is connected to the lifting screw hole. In this way, on the one hand, it will not affect the height position of the lifting member and the positioning sleeve driven by rotating the lifting screw; on the other hand, it can effectively improve the compactness of the structure of the tooling.

[0016] Preferably, it also includes an anti-loosening ring and a fixing bolt. The anti-loosening ring is fixed on the lifting screw above the cover plate. The cover plate is provided with a plurality of fixing screw holes distributed in sequence around the lifting screw. The anti-loosening ring is provided with an anti-loosening through hole matched with the fixing screw hole. The fixing bolt passes through the anti-loosening through hole and is tightened in the fixing screw hole. In this way, when the motor model is switched, the fixing bolt is first removed; then the height position of the lifting member and the positioning sleeve is driven by rotating the lifting screw; after the height position of the positioning sleeve is adjusted, the fixing bolt is locked to fix the lifting screw, so as to avoid the change of the height position of the positioning sleeve due to the rotation of the lifting screw during the shrink sleeve process, which affects the manufacturing accuracy of the motor housing and the motor embedded wire stator after shrink sleeve processing.

[0017] Preferably, the cover plate is mounted on the upper end of the positioning column by connecting bolts, so that the installation and removal of the cover plate are convenient.

[0018] Preferably, the lifting screw is provided with a retaining ring, and the shaft hole is located between the screw head of the lifting screw and the retaining ring. In this way, the lifting screw can be rotatably arranged on the cover plate, and the installation of the lifting screw is convenient.

[0019] Preferably, a height positioning block is also included, the height positioning block is supported on the bottom step surface of the bottom of the bottom plate or the outer wall of the positioning column, the height positioning block is located below the positioning sleeve, and the positioning sleeve is supported on the height positioning block to position the height position of the positioning sleeve. In this way, a number of height positioning blocks of different heights can be made according to the motor model to match motors of different models, and the surface of each height positioning block is engraved with the corresponding motor model. When switching the motor model, the operator only needs to select the corresponding height positioning block to position the height position of the positioning sleeve, so as to achieve rapid model change and ensure the accuracy and consistency of each size adjustment.

[0020] Preferably, a fixing screw hole is provided on the side wall of the positioning sleeve, and a fixing screw is provided in the fixing screw hole, and the fixing screw locks the positioning sleeve on the positioning column. In this way, after the height position of the positioning sleeve is adjusted, the positioning sleeve can be locked on the positioning column by locking the fixing screw, so as to avoid the height position of the positioning sleeve changing during the shrink-fitting process, thereby affecting the manufacturing accuracy of the motor housing and the motor wire embedded stator after the shrink-fitting process.

[0021] Preferably, an annular reference plate is provided on the upper surface of the bottom plate, and the upper surface of the annular reference plate is a reference surface for supporting the motor housing. The motor housing is supported on the reference surface, thereby improving the positioning accuracy of the motor housing.

[0022] Preferably, the positioning column is connected to the base plate by bolts, so as to facilitate the installation and replacement of the positioning column.

[0023] The beneficial effects of the utility model are: it is compatible with heat-shrink processing of different motor models, can reduce tooling manufacturing and processing costs, reduce tooling storage space, and effectively shorten tooling changeover time when the motor model is switched, so as to improve heat-shrink processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The utility model is a structural schematic diagram of a motor stator shrink sleeve quick-change tooling.

[0025] Figure 2 yes Figure 1 Schematic diagram of a cross-sectional structure at AA in the middle.

[0026] Figure 3 The utility model is a schematic diagram of a cross-sectional structure of a motor stator shrink-fit quick-change tooling during actual use.

[0027] In the figure:

[0028] Base plate 1, annular reference plate 1.1;

[0029] Positioning column 2, bottom step surface 2.1, receiving hole 2.2;

[0030] Positioning sleeve 3, reference step surface 3.1;

[0031] Height positioning block 4;

[0032] Lifting screw 5;

[0033] Lifting member 6;

[0034] Guide groove 7;

[0035] Set screw 8;

[0036] Cover plate 9, fixing screw holes 9.1;

[0037] Anti-loosening ring 10;

[0038] Fixing bolt 11;

[0039] Circlip 12;

[0040] Motor wire embedded stator 13;

[0041] Motor housing 14 . DETAILED DESCRIPTION

[0042] Specific embodiment 1, as Figure 1 , Figure 2 , Figure 3 As shown, a motor stator shrink-fit quick-change tool comprises a base plate 1, a positioning column 2, a positioning sleeve 3, a lifting member 6 and a lifting screw 5. A motor stator shrink-fit quick-change tool is installed on the shrink-fit device through the base plate 1.

[0043] The positioning column 2 is arranged on the bottom plate 1 and extends upward and downward. In this embodiment, the positioning column 2 is vertically arranged. The positioning sleeve 3 is slidably arranged on the positioning column 2. The lower part of the outer wall of the positioning sleeve 3 is provided with a reference step surface 3.1. The reference step surface 3.1 is annular. The reference step surface 3.1 is horizontally arranged.

[0044] The lifting member 6 is slidably connected to the positioning column 2, and the lifting member 6 can be lifted up and down along the positioning column 2. The lifting member 6 and the positioning column 2 cannot rotate relative to each other. The lifting member 6 is connected to the positioning sleeve 3.

[0045] The lifting screw 5 drives the lifting member 6 and the positioning sleeve 3 to move up and down. The lifting screw 5 is rotatably arranged on the positioning column 2. The axis of the lifting screw 5 is parallel or coaxial with the positioning column 2. The lifting screw 5 is connected to the lifting member 6 by threads.

[0046] The specific use of the motor stator shrink-fit quick-change tooling of this embodiment is as follows:

[0047] The iron core of the motor wire embedded stator 13 is sleeved on the positioning sleeve 3, and the lower end of the iron core is supported on the reference step surface 3.1, so that the motor wire embedded stator is positioned by the positioning sleeve 3; the motor housing 14 is sleeved on the outside of the motor wire embedded stator, and the motor housing is supported on the base plate 1 to achieve the positioning of the motor housing.

[0048] When the motor model is switched, the lifting screw 5 is rotated to drive the lifting member 6 and the positioning sleeve 3 to move up and down along the positioning column 2, thereby adjusting the height of the reference step surface 3.1 of the positioning sleeve 3 (that is, adjusting the distance between the reference step surface 3.1 and the base plate 1) to match the current motor model, thereby being compatible with various different motor models (in this embodiment, the different motor models compatible with various different motor models refer to the different motor models generated due to the different distances between the end face of the motor housing and the end face of the iron core of the motor embedded stator, although the inner diameter of the iron core of the motor embedded stator is the same). Compared with the prior art, when the motor model is switched, it is necessary to disassemble the entire shrink fitting tool from the shrink fitting equipment, disassemble the original positioning sleeve 3, install the new positioning sleeve 3, and then reinstall the shrink fitting tool on the shrink fitting equipment. The operation steps are cumbersome, and the tool change time when the motor model is switched is long, which affects the production efficiency. The motor stator shrink fitting quick change tool of the present application only needs to rotate the lifting screw 5 to drive the height position of the lifting part 6 and the positioning sleeve 3 when the motor model is switched. It is not only easy to operate, but also can effectively shorten the tool change time when the motor model is switched to improve the shrink fitting processing efficiency. Moreover, there is no need to make a large number of positioning sleeves 3, which can effectively reduce the tool manufacturing and processing costs and reduce the tool storage space.

[0049] Specific embodiment 2, as Figure 1 , Figure 2 , Figure 3 As shown, a motor stator shrink fit quick changeover tool comprises a base plate 1, a positioning column 2, a positioning sleeve 3, a lifting member 6 and a lifting screw 5. A motor stator shrink fit quick changeover tool is installed on the shrink fit device through the base plate 1. For example, the base plate 1 is installed on the shrink fit device through bolts, so that a motor stator shrink fit quick changeover tool is installed on the shrink fit device.

[0050] The positioning column 2 is arranged on the bottom plate 1. In this embodiment, the positioning column 2 is connected to the bottom plate 1 by bolts. In this way, it is convenient to install and replace the positioning column 2. Of course, it should be noted that the positioning column 2 can also be connected to the bottom plate 1 by welding or rivets.

[0051] The positioning column 2 is distributed in an upward and downward extension. In this embodiment, the positioning column 2 is distributed vertically. The positioning sleeve 3 is slidably sleeved on the positioning column 2. The lower part of the outer wall of the positioning sleeve 3 is provided with a reference step surface 3.1. The reference step surface 3.1 is annular. The reference step surface 3.1 is distributed horizontally.

[0052] The lifting member 6 is slidably connected to the positioning column 2, and the lifting member 6 can be lifted up and down along the positioning column 2. The lifting member 6 and the positioning column 2 cannot rotate relative to each other. The lifting member 6 is connected to the positioning sleeve 3.

[0053] The lifting screw 5 drives the lifting member 6 and the positioning sleeve 3 to move up and down. The lifting screw 5 is rotatably arranged on the positioning column 2. The axis of the lifting screw 5 is parallel or coaxial with the positioning column 2. The lifting screw 5 is connected to the lifting member 6 by threads.

[0054] The specific use of the motor stator shrink-fit quick-change tooling of this embodiment is as follows:

[0055] The iron core of the motor wire embedded stator 13 is sleeved on the positioning sleeve 3, and the lower end of the iron core is supported on the reference step surface 3.1, so that the motor wire embedded stator is positioned by the positioning sleeve 3; the motor housing 14 is sleeved on the outside of the motor wire embedded stator, and the motor housing is supported on the base plate 1 to achieve the positioning of the motor housing.

[0056] When the motor model is switched, the lifting screw 5 is rotated to drive the lifting member 6 and the positioning sleeve 3 to move up and down along the positioning column 2, thereby adjusting the height of the reference step surface 3.1 of the positioning sleeve 3 (that is, adjusting the distance between the reference step surface 3.1 and the base plate 1) to match the current motor model, thereby being compatible with various different motor models (in this embodiment, the different motor models compatible with various different motor models refer to the different motor models generated due to the different distances between the end face of the motor housing and the end face of the iron core of the motor embedded stator, although the inner diameter of the iron core of the motor embedded stator is the same). Compared with the prior art, when the motor model is switched, it is necessary to disassemble the entire shrink fitting tool from the shrink fitting equipment, disassemble the original positioning sleeve 3, install the new positioning sleeve 3, and then reinstall the shrink fitting tool on the shrink fitting equipment. The operation steps are cumbersome, and the tool change time when the motor model is switched is long, which affects the production efficiency. The motor stator shrink fitting quick change tool of the present application only needs to rotate the lifting screw 5 to drive the height position of the lifting part 6 and the positioning sleeve 3 when the motor model is switched. It is not only easy to operate, but also can effectively shorten the tool change time when the motor model is switched to improve the shrink fitting processing efficiency. Moreover, there is no need to make a large number of positioning sleeves 3, which can effectively reduce the tool manufacturing and processing costs and reduce the tool storage space.

[0057] Specifically, the positioning column 2 is a hollow structure, and its inner hole forms a receiving hole 2.2. The receiving hole 2.2 runs through the upper and lower end surfaces of the positioning column 2. A cover plate 9 is provided at the upper end of the receiving hole 2.2. In this embodiment, the cover plate 9 is installed on the upper end of the positioning column 2 by connecting bolts. In this way, it is convenient to install and remove the cover plate 9. Of course, the cover plate 9 can also be installed on the upper end of the positioning column 2 by welding. A guide groove 7 extending along the axial direction of the positioning column 2 is provided on the side wall of the positioning column 2, and the guide groove 7 connects the outer wall of the positioning column 2 and the inner wall of the receiving hole 2.2. The lifting member 6 is located in the receiving hole 2.2. The lifting member 6 passes through the guide groove 7 and is connected to the positioning sleeve 3 so that the lifting member 6 slides up and down along the guide groove 7. In this way, on the one hand, it can ensure that the lifting member 6 slides up and down along the guide groove 7 stably; on the other hand, it can effectively improve the compactness of the structure of the tooling. In this embodiment, there are two guide grooves 7, and the two guide grooves 7 are distributed on opposite sides of the positioning column 2. Both ends of the lifting member 6 pass through the two guide grooves 7, and both ends of the lifting member 6 are connected to the positioning sleeve 3.

[0058] An axial hole is provided in the middle of the cover plate 9. The lifting screw 5 passes through the axial hole. The lifting screw 5 is rotatably set in the axial hole. A retaining spring 12 is provided on the lifting screw 5. The retaining spring 12 is close to the screw head of the lifting screw 5. The axial hole is located between the screw head of the lifting screw 5 and the retaining spring 12. A lifting screw hole is provided on the lifting member 6. The lifting screw hole is located in the accommodating hole 2.2. The lower part of the lifting screw 5 extends into the accommodating hole 2.2 and is connected to the lifting screw hole. In this way, on the one hand, it will not affect the height position of the lifting member 6 and the positioning sleeve 3 driven by rotating the lifting screw 5; on the other hand, it can effectively improve the compactness of the structure of the tooling.

[0059] A conical guide portion is provided at the top of the outer wall of the positioning sleeve 3, and the outer diameter of the conical guide portion gradually decreases from bottom to top.

[0060] Furthermore, a motor stator shrink-fit quick-change tooling also includes an anti-loosening ring 10 and a fixing bolt 11. The anti-loosening ring 10 is fixed on the lifting screw 5 above the cover plate 9. In this embodiment, the anti-loosening ring 10 is fixed on the screw head of the lifting screw 5. The cover plate 9 is provided with a plurality of fixing screw holes 9.1 distributed in sequence around the lifting screw 5. The anti-loosening ring 10 is provided with an anti-loosening through hole that cooperates with the fixing screw hole. The fixing bolt 11 passes through the anti-loosening through hole and is tightened in the fixing screw hole. In this way, when the motor model is switched, the fixing bolt 11 is first removed; then the height position of the lifting member 6 and the positioning sleeve 3 is driven by rotating the lifting screw 5; after the height position of the positioning sleeve 3 is adjusted, the fixing bolt 11 is locked to fix the lifting screw 5, so as to avoid the change of the height position of the positioning sleeve 3 due to the rotation of the lifting screw 5 during the shrink-fit process, thereby affecting the manufacturing accuracy of the motor housing and the motor wire embedded stator after shrink-fit processing.

[0061] In an implementation manner of this embodiment, the fixing screw hole is a round hole, and the inner diameter of the fixing screw hole is larger than the outer diameter of the fixing bolt 11 and smaller than the outer diameter of the bolt head of the fixing bolt 11 .

[0062] In another implementation of this embodiment, the fixing screw hole is an arc-shaped hole, and the arc-shaped holes are distributed and extended around the circumference of the fixing bolt 11 .

[0063] Furthermore, a fixing screw hole is provided on the side wall of the positioning sleeve 3, and the fixing screw hole penetrates the side wall of the positioning sleeve 3 along the radial direction of the positioning sleeve 3. A fixing screw 8 is provided in the fixing screw hole, and the fixing screw 8 locks the positioning sleeve 3 on the positioning column 2. In this way, after the height position of the positioning sleeve 3 is adjusted, the positioning sleeve 3 can be locked on the positioning column 2 by locking the fixing screw 8, so as to avoid the height position of the positioning sleeve 3 changing during the shrink-fitting process, thereby affecting the manufacturing accuracy after the shrink-fitting process of the motor housing and the motor wire embedded stator.

[0064] Furthermore, an annular reference plate 1.1 is provided on the upper surface of the base plate 1, and the upper surface of the annular reference plate 1.1 is a reference surface for supporting the motor housing. The motor housing is supported on the reference surface, thereby improving the positioning accuracy of the motor housing. In this embodiment, the annular reference plate 1.1 is mounted on the base plate 1 by bolts.

[0065] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 2, and the difference is that:

[0066] A motor stator shrink sleeve quick change tooling also includes a height positioning block 4. The height positioning block 4 is supported on the bottom plate 1 or the bottom step surface of the bottom of the outer wall of the positioning column 2, the height positioning block 4 is located below the positioning sleeve 3, and the positioning sleeve 3 is supported on the height positioning block 4 to position the height position of the positioning sleeve 3.

[0067] In one implementation of this embodiment, a bottom step surface 2.1 is provided at the bottom of the outer wall of the positioning column 2, and the bottom step surface is annular and horizontally distributed. The height positioning block 4 is supported on the bottom step surface, and the positioning sleeve 3 is supported on the height positioning block 4 to position the height position of the positioning sleeve 3.

[0068] In another implementation manner of this embodiment, the height positioning block 4 is supported on the base plate 1 , and the positioning sleeve 3 is supported on the height positioning block 4 to position the height position of the positioning sleeve 3 .

[0069] A motor stator heat-shrink fast-changing tooling of the present embodiment can produce a number of height positioning blocks 4 of different heights according to different motor models to match different motor models, and the surface of each height positioning block 4 is engraved with the corresponding motor model. When switching the motor model, the operator only needs to select the corresponding height positioning block 4 to position the height position of the positioning sleeve 3, so as to achieve rapid changeover and ensure the accuracy and consistency of each size adjustment. Specifically, when switching the motor model, the lifting screw 5 is rotated to drive the lifting member 6 and the positioning sleeve 3 to move up; then the original height positioning block 4 is removed, and a matching height positioning block 4 is selected to be supported on the bottom step surface of the bottom of the outer wall of the positioning column 2; then, the lifting screw 5 is rotated to drive the lifting member 6 and the positioning sleeve 3 to move down until the positioning sleeve 3 is supported on the height positioning block 4 to position the height position of the positioning sleeve 3, thereby achieving rapid changeover and ensuring the accuracy and consistency of each size adjustment.

[0070] The above description is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A motor stator shrink sleeve quick change tooling, characterized in that: include: Base plate; Positioning columns are arranged on the bottom plate and extend upward and downward; The positioning sleeve and the sliding sleeve are arranged on the positioning column, and the lower part of the outer wall of the positioning sleeve is provided with a reference step surface; A lifting member slidably connected to the positioning column, which can be lifted up and down along the positioning column, and the lifting member is connected to the positioning sleeve; The lifting screw drives the lifting member and the positioning sleeve to move up and down. The lifting screw is rotatably arranged on the positioning column. The axis of the lifting screw is parallel or coaxial with the positioning column. The lifting screw is connected to the lifting member through threads.

2. The motor stator shrink-fit quick-change tooling according to claim 1 is characterized in that: The positioning column is a hollow structure, and its inner hole forms a receiving hole. A guide groove extending along the axial direction of the positioning column is provided on the side wall of the positioning column. The lifting member is located in the receiving hole, and the lifting member passes through the guide groove and is connected to the positioning sleeve so that the lifting member slides up and down along the guide groove.

3. The motor stator shrink-fit quick-change tooling according to claim 2 is characterized in that: A cover plate is provided at the upper end of the accommodating hole, an axial hole is provided in the middle of the cover plate, the lifting screw passes through the axial hole, the lifting screw is rotatably arranged in the axial hole, a lifting screw hole is provided on the lifting member, and the lower part of the lifting screw extends into the accommodating hole and is connected to the lifting screw hole.

4. The motor stator shrink-fit quick-change tooling according to claim 3 is characterized in that: It also includes an anti-loosening ring and a fixing bolt. The anti-loosening ring is fixed on the lifting screw above the cover plate. The cover plate is provided with a plurality of fixing screw holes distributed in sequence around the lifting screw. The anti-loosening ring is provided with an anti-loosening through hole matching the fixing screw hole. The fixing bolt passes through the anti-loosening through hole and is tightened in the fixing screw hole.

5. A motor stator shrink-fit quick-change tooling according to claim 3 or 4, characterized in that: The cover plate is mounted on the upper end of the positioning column through connecting bolts.

6. A motor stator shrink-fit quick-change tooling according to claim 3 or 4, characterized in that: The lifting screw is provided with a retaining ring, and the shaft hole is located between the screw head of the lifting screw and the retaining ring.

7. A motor stator shrink-fit quick-change tooling according to claim 1, 2, 3 or 4, characterized in that: It also includes a height positioning block, which is supported on the bottom step surface of the bottom plate or the bottom of the outer wall of the positioning column. The height positioning block is located below the positioning sleeve, and the positioning sleeve is supported on the height positioning block to position the height position of the positioning sleeve.

8. A motor stator shrink-fit quick-change tooling according to claim 1, 2, 3 or 4, characterized in that: A fixing screw hole is arranged on the side wall of the positioning sleeve, and a fixing screw is arranged in the fixing screw hole. The fixing screw locks the positioning sleeve on the positioning column.

9. A motor stator shrink-fit quick-change tooling according to claim 1, 2, 3 or 4, characterized in that: An annular reference plate is provided on the upper surface of the bottom plate, and the upper surface of the annular reference plate is a reference surface for supporting the motor housing.

10. A motor stator shrink-fit quick-change tooling according to claim 1, 2, 3 or 4, characterized in that: The positioning column is connected to the bottom plate by bolts.

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