Rotor press fitting tool
By designing a positioning and pressing mechanism for the rotor pressing fixture, the problem of difficult rotor and stator assembly was solved, achieving efficient compressor assembly and cost reduction.
Patent Information
- Application Number
- CN202423083001.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-13
AI Technical Summary
When assembling a compressor, magnetic interference between the rotor and stator makes it difficult to install the rotor in the designated position, resulting in assembly difficulties, low efficiency, and high costs.
A rotor press-fitting fixture was designed, including a positioning mechanism and a press-fitting mechanism. The rotor and stator assemblies are precisely aligned using a limit seat, clamping parts and positioning plate, and rapid assembly is achieved through a press-fitting drive component.
Precise assembly of the rotor assembly was achieved, improving assembly efficiency and reducing compressor assembly costs.
Smart Images
Figure CN223553191U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor assembly technology, and in particular to rotor pressing tooling used in assembling compressors. Background Technology
[0002] When assembling a compressor, magnetic interference between the rotor and stator makes it difficult to install the rotor into the designated position, which in turn leads to assembly difficulties, low assembly efficiency, and high assembly costs. Utility Model Content
[0003] To improve the assembly efficiency and reduce the assembly cost of compressors, this utility model proposes a rotor press-fitting fixture. The fixture includes a positioning mechanism and a press-fitting mechanism. The positioning mechanism includes a base, a limiting seat, a clamping member, and a positioning plate. The limiting seat is fixed to the base and has a limiting post with a diameter less than or equal to the diameter of the main shaft in the rotor assembly to be press-fitted. The clamping member includes at least two clamping blocks arranged around the limiting post, with the top of each clamping block higher than the top of the limiting post. The positioning plate is parallel to the base above it and connected to the base via a sliding rod. The positioning plate has a press-fitting hole and a cylinder positioning groove, with the central axis of the press-fitting hole coinciding with the center of the limiting post. The cylinder positioning groove is arranged around the periphery of the press-fitting hole.
[0004] The pressing mechanism includes a pressing base, a pressing drive, and a pressing head. The pressing base includes a pressing top plate and a pressing bottom plate that are parallel to each other. The pressing top plate is located above the positioning plate, and the pressing bottom plate is located below the base. The pressing top plate and the pressing bottom plate are connected by a pressing connecting rod. The pressing drive is mounted and fixed on the pressing top plate. The pressing head is mounted on the pressing drive rod of the pressing drive and moves up and down between the pressing top plate and the positioning plate under the drive of the pressing drive.
[0005] When assembling a compressor using the rotor press-fit fixture of this invention, the rotor assembly is placed on the limiting seat, and the main shaft in the rotor assembly is held in place by clamping components, so that the central axis of the main shaft coincides with the central axis of the limiting post on the limiting seat; the stator assembly is placed on the positioning plate in the positioning mechanism, and the compressor housing in the stator assembly is inserted into the cylinder positioning groove on the positioning plate, so that the central axis of the stator assembly coincides with the central axis of the main shaft in the rotor assembly; the press-fitting drive component in the press-fitting mechanism is activated, causing the press-fitting drive component to drive the press-fitting head to press down on the stator assembly, so that the stator assembly and the rotor assembly are assembled together. Therefore, when assembling a compressor using the rotor press-fit fixture of this invention, the rotor assembly can be accurately assembled into the stator assembly, and the assembly operation is simple and fast, which can effectively improve the assembly efficiency of the compressor and reduce the assembly cost of the compressor.
[0006] Preferably, an eccentric pin insertion hole is provided on the limiting column, and the central axis of the eccentric pin insertion hole is parallel to the central axis of the limiting column. In this way, when assembling a compressor using the rotor press-fitting tooling of the present utility model, the eccentric pin in the rotor assembly is inserted into the eccentric pin insertion hole on the limiting column, enabling the main shaft in the rotor assembly to be quickly aligned with the limiting column, that is, making the central axis of the main shaft coincide with the central axis of the limiting column, which can further improve the assembly efficiency of the compressor. Further, limiting blocks are provided around the limiting column, and a clamping groove for accommodating the clamping block is formed between two adjacent limiting blocks, and the clamping groove extends along the radial direction of the limiting column. In this way, when clamping the main shaft对接 with the limiting column using a clamping member, the movement direction of the clamping block can be guided by the clamping groove, preventing the movement direction of the clamping block from deviating and affecting the clamping efficiency or even the assembly efficiency of the compressor. Further preferably, the cross-section of the limiting block is a sector structure, and the inner edge surface of the limiting block is connected to the side surface of the limiting column. In this way, the limiting block and the limiting column are connected into an integral structure, preventing the limiting block from moving out of position and causing the extension direction of the clamping groove to deviate, affecting the assembly efficiency of the compressor.
[0007] Preferably, a limiting groove for installing the limiting column and the clamping member is provided at the top of the limiting seat. In this way, when installing the limiting column and the clamping member onto the limiting seat, the limiting groove can be used to position the limiting column and the clamping member, preventing the limiting column and the clamping member from being misaligned during use and affecting the assembly efficiency of the compressor. Further, a radial movement sliding groove is provided on the side wall of the limiting groove; the clamping member includes a moving slider and a moving driving member, the moving slider is clamped in the radial movement sliding groove and is connected to the bottom of the clamping block, and the moving slider drives the clamping block to move in the radial direction under the drive of the moving driving member. In this way, during press-fitting, the moving driving member can be used to push the moving slider to move towards the limiting column in the radial movement sliding groove, thereby driving the clamping block connected to the moving slider to move towards the limiting column to clamp the main shaft aligned with the limiting column, realizing the positioning of the rotor assembly; after the press-fitting is completed, the moving driving member can be used to push the moving slider to move away from the limiting column in the radial movement sliding groove, thereby driving the clamping block connected to the moving slider to move away from the limiting column to release the main shaft in the rotor assembly, facilitating the operator to remove the press-fitted rotor assembly and stator assembly from the positioning mechanism. Further preferably, the moving slider is a "convex" - shaped structure, and the radial cross-section of the radial movement sliding groove is a "convex" - shaped structure. In this way, when the moving slider is assembled into the radial movement sliding groove, the convex blocks on both sides of the radial movement sliding groove can be used to hold the moving slider, preventing the moving slider from晃动错位 during movement in the radial movement sliding groove and improving the compression efficiency of the compressor.
[0008] Preferably, the pressing base is fixedly mounted on a support base, which is provided with a pressing start device and a clamping start device. The pressing start device is connected to the pressing drive component in the pressing mechanism, and the clamping start device is connected to the moving drive component in the clamping component. Thus, when assembling a compressor using the rotor pressing fixture of this invention, the pressing start device and the clamping start device can be used to start the pressing mechanism and the clamping component respectively for pressing and clamping operations, making operation simple and convenient and further improving the assembly efficiency of the compressor. Furthermore, the pressing start device and the clamping start device are symmetrically arranged on both sides of the pressing base. This allows the operator to simultaneously start the pressing mechanism and the clamping component with both hands during assembly, preventing the operator from putting their hands into the rotor pressing fixture of this invention during the pressing process, thus ensuring safety and preventing errors.
[0009] Preferably, the base includes a base top plate, a base bottom plate, and a support plate. The base top plate is parallel to the base bottom plate and located above the base bottom plate, and both ends of the base top plate are connected to the base bottom plate through the support plate. Such a base has a simple and stable structure, is easy to manufacture, and has low cost, which can reduce the production cost of the rotor pressing fixture of this utility model, and further reduce the assembly cost of the compressor. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the rotor pressing fixture of this utility model;
[0011] Figure 2 for Figure 1 A schematic diagram of the AA cross-sectional structure in the diagram;
[0012] Figure 3 This is a schematic diagram of the rotor pressing tool of this utility model in use.
[0013] Figure 4 for Figure 3 Schematic diagram of the BB cross-sectional structure in the diagram;
[0014] Figure 5 for Figure 3 A schematic diagram of the CC section structure. Detailed Implementation
[0015] Below, in conjunction with Figures 1 to 5 This paper provides a detailed description of the rotor pressing tooling of this utility model.
[0016] like Figures 1 to 5As shown, the rotor pressing fixture of this utility model includes a positioning mechanism and a pressing mechanism. The positioning mechanism includes a base 11, a limiting seat 12, a clamping member 13, and a positioning plate 14. The limiting seat 12 is fixed on the base 11 and has a limiting post 121. The diameter of the limiting post 121 is less than or equal to the diameter of the main shaft 21 in the rotor assembly to be pressed. The clamping member 13 includes at least two clamping blocks 131, which are arranged around the limiting post 121, and the top of the clamping block 131 is higher than the top of the limiting post 121. The positioning plate 14 is arranged parallel above the base 11 and connected to the base 11 by a sliding rod 15. The positioning plate 14 has a pressing hole 141 and a cylinder positioning groove 142. The central axis of the pressing hole 141 coincides with the center of the limiting post 121. The cylinder positioning groove 142 is arranged around the periphery of the pressing hole 141 so that the compressor housing 51 in the stator assembly 5 to be pressed can be inserted into the cylinder positioning groove 142. Preferably, the cylinder positioning groove 142 is disposed at the edge of the press-fit hole 141 and forms a stepped structure at the edge of the press-fit hole 141. Preferably, the limiting post 121 is provided with an eccentric pin insertion hole 1211, and the central axis of the eccentric pin insertion hole 1211 is parallel to the central axis of the limiting post 121. In this way, when assembling the compressor using the rotor press-fit tooling of this utility model, inserting the eccentric pin 22 in the rotor assembly into the eccentric pin insertion hole 1211 on the limiting post 121 can quickly align the main shaft 21 in the rotor assembly with the limiting post 121, and even if the central axis of the main shaft 21 coincides with the central axis of the limiting post 121, the assembly efficiency of the compressor can be further improved. Preferably, the eccentric pin insertion hole 1211 has a disassembly opening (not shown in the figure) on the side wall away from the central axis of the limiting post 121, to facilitate the insertion of the eccentric pin 22 into the eccentric pin insertion hole 1211 or the removal of the eccentric pin 22 from the eccentric pin insertion hole 1211. Preferably, limiting blocks 122 are provided around the limiting post 121, and a clamping groove (not shown in the figure) for accommodating the clamping block 131 is formed between two adjacent limiting blocks 122, and the clamping groove extends along the radial direction of the limiting post 121. In this way, when the main shaft 21 that is connected to the limiting post 121 is clamped by the clamping member 13, the clamping groove can be used to guide the movement direction of the clamping block 131, so as to avoid the movement direction of the clamping block 131 deviating, which would affect the clamping efficiency and even the assembly efficiency of the compressor. Preferably, the limiting block 122 has a fan-shaped cross-section, and its inner edge is connected to the side of the limiting post 121. This way, the limiting block 122 and the limiting post 121 are integrated into a single structure, preventing the limiting block 122 from shifting and causing the clamping groove to deviate in its extension direction, thus affecting the compressor's assembly efficiency. Preferably, the top of the limiting seat 12 is provided with a limiting groove 123 for mounting the limiting post 121 and the clamping member 13.In this way, when installing the limit post 121 and the clamping member 13 onto the limit seat 12, the limit groove 123 can be used to position the limit post 121 and the clamping member 13, preventing the dislocation of the limit post 121 and the clamping member 13 during use and affecting the assembly efficiency of the compressor. Preferably, a radial movement sliding groove (not shown in the figure) is provided on the side wall of the limit groove 123; the clamping member 13 includes a moving slider 132 and a moving driving member (not shown in the figure). The moving slider 132 is clamped in the radial movement sliding groove and connected to the bottom of the clamping block 131, and the moving slider 132 drives the clamping block 131 to move in the radial direction under the drive of the moving driving member. In this way, during press-fitting, the moving driving member can be used to push the moving slider 132 to move towards the limit post 121 in the radial movement sliding groove, thereby driving the clamping block 131 connected to the moving slider 132 to move towards the limit post 121 to clamp the main shaft 21 aligned with the limit post 121, achieving the positioning of the rotor assembly; after the press-fitting is completed, the moving driving member can be used to push the moving slider 132 to move away from the limit post 121 in the radial movement sliding groove, thereby driving the clamping block 131 connected to the moving slider 132 to move away from the limit post 121 to release the main shaft 21 in the rotor assembly, facilitating the operator to remove the press-fitted rotor assembly and the stator assembly 5 from the positioning mechanism. Preferably, the moving slider 132 has a "convex" shape structure, and the radial cross-section of the radial movement sliding groove has a "convex" shape structure. In this way, when the moving slider 132 is assembled into the radial movement sliding groove, the convex blocks on both sides of the radial movement sliding groove can be used to hold the moving slider 132, preventing the moving slider 132 from shaking and dislocating during movement in the radial movement sliding groove and improving the compression efficiency of the compressor.
[0017] As Figures 1 to 5 shown, the base 11 includes a base top plate 111, a base bottom plate 112, and a support plate 113. The base top plate 111 is parallel to the base bottom plate 112 and located above the base bottom plate 112, and both ends of the base top plate 111 are connected to the base bottom plate 112 through the support plate 113. Such a base 11 has a simple and stable structure, is easy to manufacture and has a low cost, can reduce the production cost of the rotor press-fitting tooling of the present utility model, and further can reduce the assembly cost of the compressor.
[0018] As Figures 1 to 5As shown, the pressing mechanism includes a pressing base 31, a pressing drive (not shown), and a pressing head (not shown). The pressing base 31 includes a pressing top plate 311 and a pressing bottom plate 312 that are parallel to each other. The pressing top plate 311 is located above the positioning plate 14, and the pressing bottom plate 312 is located below the base 11. The pressing top plate 311 and the pressing bottom plate 312 are connected by a pressing connecting rod 313. The pressing drive is mounted and fixed on the pressing top plate 311, and the pressing head is mounted on the pressing drive rod of the pressing drive and moves up and down between the pressing top plate 311 and the positioning plate 14 under the drive of the pressing drive. Preferably, the pressing base 31 is mounted and fixed on a support base 6, and the support base 6 is provided with a pressing starting device 41 and a clamping starting device 42. The pressing starting device 41 is connected to the pressing drive in the pressing mechanism, and the clamping starting device 42 is connected to the moving drive in the clamping member 13. Thus, when assembling a compressor using the rotor pressing fixture of this utility model, the pressing starting device 41 and the clamping starting device 42 can be used to start the pressing mechanism and the clamping member 13 respectively for pressing and clamping operations. The operation is simple and convenient, and can further improve the assembly efficiency of the compressor. Preferably, the pressing starting device 41 and the clamping starting device 42 are symmetrically arranged on both sides of the pressing base 31. In this way, during assembly, the operator can use both hands to start the pressing mechanism 41 and the clamping member 13 simultaneously, which can prevent the operator from putting their hands into the rotor pressing fixture of this utility model during the pressing process, thus ensuring safety and preventing errors.
[0019] When assembling a compressor using the rotor press-fit fixture of this utility model, the rotor assembly is placed on the limiting seat, and the main shaft 21 in the rotor assembly is clamped by the clamping member 13, so that the central axis of the main shaft 21 coincides with the central axis of the limiting post 121 on the limiting seat 12; the stator assembly 5 is placed on the positioning plate 14 in the positioning mechanism, and the compressor housing 51 in the stator assembly 5 is inserted into the cylinder positioning groove 142 on the positioning plate 14, so that the central axis of the stator 52 in the stator assembly 5 coincides with the central axis of the main shaft 21 in the rotor assembly; the press-fitting drive in the press-fitting mechanism is activated, so that the press-fitting drive drives the press-fitting head to press down the stator assembly 5, so that the stator assembly 5 and the rotor assembly are assembled together. Therefore, when assembling a compressor using the rotor press-fit fixture of this utility model, the rotor assembly can be accurately assembled into the stator assembly 5, and the assembly operation is simple and fast, which can effectively improve the assembly efficiency of the compressor and reduce the assembly cost of the compressor.
Claims
1. A rotor press-fitting fixture, characterized in that, The rotor press-fitting tooling includes a positioning mechanism and a press-fitting mechanism. The positioning mechanism includes a base, a limit seat, a clamping member, and a positioning plate. The limit seat is fixed on the base. A limit post is provided on the limit seat, and the diameter of the limit post is less than or equal to the diameter of the main shaft in the rotor assembly to be press-fitted. The clamping member includes at least two clamping blocks. The clamping blocks are arranged around the limit post, and the top ends of the clamping blocks are higher than the top end of the limit post. The positioning plate is arranged parallel to the upper side of the base and is connected to the base through a slide bar. A press-fitting hole and a cylinder block positioning groove are provided on the positioning plate, and the central axis of the press-fitting hole coincides with the central axis of the limit post. The cylinder block positioning groove is arranged in a ring shape around the periphery of the press-fitting hole. The press-fitting mechanism includes a press-fitting seat, a press-fitting driving member, and a press-fitting head. The press-fitting seat includes a press-fitting top plate and a press-fitting bottom plate that are parallel to each other. The press-fitting top plate is located above the positioning plate, and the press-fitting bottom plate is located below the base. The press-fitting top plate and the press-fitting bottom plate are connected through a press-fitting connecting rod. The press-fitting driving member is installed and fixed on the press-fitting top plate. The press-fitting head is installed on the press-fitting driving rod of the press-fitting driving member and moves up and down between the press-fitting top plate and the positioning plate under the drive of the press-fitting driving member.
2. The rotor press-fitting fixture according to claim 1, characterized in that, An eccentric pin insertion hole is provided on the limit post, and the central axis of the eccentric pin insertion hole is parallel to the central axis of the limit post.
3. The rotor press-fitting fixture according to claim 2, characterized in that, Limit blocks are provided around the limit post. A clamping groove for accommodating the clamping block is formed between two adjacent limit blocks, and the clamping groove extends along the radial direction of the limit post.
4. The rotor press-fitting fixture according to claim 3, characterized in that, The cross section of the limit block is a sector structure, and the inner edge surface of the limit block is connected to the side surface of the limit post.
5. The rotor press-fitting fixture according to any one of claims 1-4, characterized in that, A limit groove for installing the limit post and the clamping member is provided at the top of the limit seat.
6. The rotor press-fitting fixture according to claim 5, characterized in that, Radial movement sliding grooves are provided on the side wall of the limit groove. The clamping member includes a moving slider and a moving driving member. The moving slider is clamped in the radial movement sliding groove and is connected to the bottom of the clamping block. The moving slider drives the clamping block to move in the radial direction under the drive of the moving driving member.
7. The rotor press-fitting fixture according to claim 6, characterized in that, The moving slider is a "convex" shaped structure, and the radial cross section of the radial movement sliding groove is a "convex" shaped structure.
8. The rotor press-fitting fixture according to claim 7, characterized in that, The press-fitting seat is installed and fixed on a support seat. A press-fitting starting device and a clamping starting device are provided on the support seat. The press-fitting starting device is connected to the press-fitting driving member in the press-fitting mechanism, and the clamping starting device is connected to the moving driving member in the clamping member.
9. The rotor press-fitting fixture according to claim 8, characterized in that, The press-fitting starting device and the clamping starting device are symmetrically arranged on both sides of the press-fitting seat.
10. The rotor press-fitting fixture according to any one of claims 1-4, characterized in that, The base includes a base top plate, a base bottom plate, and a support plate. The base top plate and the base bottom plate are parallel and located above the base bottom plate. The two ends of the base top plate are connected to the base bottom plate through the support plate.