Motor core lamination automatic alignment clamp
By designing the screw, screw sleeve, drive assembly, and limit assembly, the problems of pressure plate vibration and low stacking accuracy in the motor core stacking fixture were solved, thus improving the stability of the pressure plate movement and the stacking accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU LINGCHAO PRECISION TECH CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-19
AI Technical Summary
Existing motor core stacking fixtures are prone to vibration or jamming during the movement of the pressure plate, and the stacking accuracy is not high. In particular, when the number or thickness of the iron cores changes, the nonlinear change of the spring elastic force affects the alignment accuracy of the pressure plate, and the elastic decay after long-term use leads to positional deviation.
The design employs a screw, screw sleeve, drive assembly, and limit assembly. A dual-axis motor drives the helical gear to rotate the screw, and the limit holes and limit rods restrict the movement trajectory of the pressure plate, ensuring stable pressing and resetting of the pressure plate. This avoids vibration and jamming caused by changes in spring elasticity, and improves stacking accuracy.
This improved the smoothness of the pressure plate movement and the stacking accuracy, ensuring the stability and precision of the iron chip stacking process and avoiding vibration and positional deviation caused by changes in elastic force.
Smart Images
Figure CN224373258U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor manufacturing technology, specifically to an automatic alignment fixture for stacked motor core laminations. Background Technology
[0002] An electric motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque and serve as a power source for electrical appliances or various machines. Currently, the most common method is to use thermal energy, water energy, etc., to drive the rotor of a generator to generate electricity. The rotating part of the motor is called the rotor, and the non-rotating part is called the stator. In the market, the iron core of the rotor is usually divided into thin sheets that are electrically insulated from each other to produce multi-layer iron cores. This reduces the cross-section in the direction of magnetic lines of force, reduces eddy currents and their losses, and achieves the best magnetic shielding effect. During the production and processing of the iron core, the multi-layer iron core sheets are usually aligned and stacked, and then the edges are welded to form the final shape. During the stacking process, fixtures are usually used for limiting the position.
[0003] Currently, Chinese utility model patent CN210588954U discloses a stacking fixture with an internal rotor iron core, including a worktable, a positioning device, and a rotor iron core device. The worktable has a placement groove in the center of its top. The positioning device is movably inserted into the placement groove, and the rotor iron core device is movably sleeved on the outer wall of the positioning device. The positioning device includes a positioning rod, a magnet, a protrusion, and a pull block. The magnet is fixedly connected to the bottom of the positioning rod, the protrusion is fixedly connected to the outer wall of the positioning rod, and the pull block is fixedly connected to the top of the positioning rod. The rotor iron core device includes iron cores. This utility model allows iron cores to be individually sleeved onto the positioning rod, stably stacking multiple iron cores together, as the shaft holes on the iron cores correspond to the positioning rod, and the positioning notches on the iron cores correspond to the protrusions. This convenient and quick operation improves the efficiency of alignment and stacking operations.
[0004] Based on the search of the above patents and the discovery of equipment in the existing technology, the above equipment can solve the problems that the stacking fixture operation is relatively complicated, which is not conducive to the operator to quickly align the stacking, and that the iron chips are prone to rotational displacement during stacking operations, resulting in deviation.
[0005] However, during use, when the electric push rod pushes the pressure plate down, the nonlinear change of the spring elastic force can easily cause the pressure plate to vibrate or jam. Especially when the number or thickness of the iron chip stacks changes, the dynamic balance between the pushing force and the elastic force is broken, which directly affects the alignment accuracy of the iron chip stacks. At the same time, the compression spring will inevitably experience elastic decay after long-term use, resulting in positional deviation when the pressure plate is reset. Utility Model Content
[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide an automatic alignment fixture for stacked iron core laminations of a motor. This fixture has the advantages of improving the stability of the pressure plate movement and the stacking accuracy. It solves the problem that when the electric push rod pushes the pressure plate down, the nonlinear change of the spring elastic force can easily cause the pressure plate movement to vibrate or jam. Especially when the number or thickness of the stacked iron core laminations changes, the dynamic balance between the pushing force and the elastic force is broken, which directly affects the alignment accuracy of the stacked iron core laminations. At the same time, the compression spring inevitably experiences elastic decay after long-term use, leading to positional deviation when the pressure plate is reset.
[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic alignment fixture for stacked motor core laminations, comprising a worktable, a positioning device, lamination pieces, insertion holes, a pressure plate, and insertion rods. The positioning device is fixedly installed on the top of the worktable, the lamination pieces are movably connected to the surface of the positioning device, the insertion holes are opened on the top of the lamination pieces, the pressure plate is disposed on both sides of the top of the lamination pieces, the insertion rods are fixedly connected to the inner side of the bottom of the pressure plate, the surface of the insertion rods is inserted into the inner wall of the insertion holes, a screw sleeve is fixedly installed on the outer side of the bottom of the pressure plate, a screw rod is threadedly connected to the inner wall of the screw sleeve, a drive assembly is fixedly installed on the surface of the screw rod, and limit assemblies are provided on both sides of the top of the pressure plate.
[0008] In a preferred embodiment of this invention, the drive assembly includes a first helical gear, which is fixedly installed at the bottom of the screw surface. A second helical gear is meshed with the inner side of the first helical gear. A dual-axis motor is fixedly installed at the bottom of the inner wall of the worktable, and the output end of the dual-axis motor is fixedly connected to the inner side of the second helical gear.
[0009] In a preferred embodiment of this invention, the limiting component includes limiting holes, which are located on both sides of the top of the pressure plate. A limiting rod is movably connected to the inner wall of the limiting hole, and the bottom of the limiting rod is fixedly connected to the top of the worktable.
[0010] As a preferred embodiment of this invention, a control box is fixedly installed on the right side of the workbench, and the control box is electrically connected to the dual-axis motor via wires.
[0011] As a preferred embodiment of this utility model, guide plates are fixedly connected to both sides of the top of the workbench, the surface of the pressure plate is movably connected to the inner wall of the guide plate, and the guide plate is U-shaped.
[0012] As a preferred embodiment of this utility model, the inner wall of the guide plate is provided with grooves on both sides, and the pressure plate is movably embedded with balls on both sides, the surface of the balls being movably connected to the inner wall of the groove.
[0013] As a preferred embodiment of this invention, the bottom of the screw is movably connected to a movable seat, and the movable seat is fixedly connected to both sides of the bottom of the inner wall of the workbench.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model, by setting a screw, a screw sleeve, a drive assembly, and a limiting assembly, enables the threaded connection structure between the screw sleeve and the screw, in conjunction with the drive assembly, to achieve stable downward pressing of the pressure plate. Compared with the traditional method relying on springs, it eliminates the vibration and jamming problems caused by the nonlinear change of spring elastic force. Regardless of the change in the number or thickness of the stacked iron chips, it can maintain stable pressure, effectively improving the smoothness of the pressure plate movement and the stacking accuracy. It solves the problem that when the electric push rod pushes the pressure plate downward, the nonlinear change of spring elastic force can easily cause vibration or jamming of the pressure plate movement. Especially when the number or thickness of the stacked iron chips changes, the dynamic balance between the pushing force and the elastic force is broken, directly affecting the alignment accuracy of the stacked iron chips. At the same time, the compression spring inevitably experiences elastic decay after long-term use, leading to positional deviation when the pressure plate resets. It has the advantages of improving the smoothness of the pressure plate movement and the stacking accuracy.
[0016] 2. By setting up a drive component, this utility model enables a dual-axis motor to drive the second helical gear to rotate. The second helical gear can drive the first helical gear to rotate, which in turn drives the screw to rotate inside the screw sleeve, thereby driving the pressure plate to press down. This ensures that the pressure plate is subjected to uniform force during movement, avoids vibration caused by unstable power, effectively improves the stability of the pressure plate movement, and thus ensures the stacking accuracy of the iron chip.
[0017] 3. By setting a limiting component, this utility model can make the limiting hole cooperate with the limiting rod, which can accurately limit the movement trajectory of the pressure plate in the vertical direction, prevent the pressure plate from shifting or tilting laterally when subjected to pressure or other external forces, and ensure that the pressure plate can perform the pressing operation on the iron chip vertically and stably, which greatly improves the stability of the pressure plate movement and helps to improve the alignment accuracy of the stacked iron chips. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0019] Figure 2 This is a three-dimensional cross-sectional view of the workbench of this utility model;
[0020] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of the pressure plate of this utility model.
[0021] In the diagram: 1. Workbench; 2. Positioning device; 3. Iron chip; 4. Insertion hole; 5. Pressure plate; 6. Insert rod; 7. Screw sleeve; 8. Screw; 9. Drive assembly; 91. Helical gear one; 92. Helical gear two; 93. Dual-axis motor; 10. Limiting assembly; 101. Limiting hole; 102. Limiting rod; 11. Control box; 12. Guide plate; 13. Slide groove; 14. Ball bearing; 15. Movable seat. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] like Figures 1 to 3 As shown, the automatic alignment fixture for stacked motor core laminations provided by this utility model includes a worktable 1, a positioning device 2, a lamination 3, an insertion hole 4, a pressure plate 5, and an insertion rod 6. The positioning device 2 is fixedly installed on the top of the worktable 1. The lamination 3 is movably connected to the surface of the positioning device 2. The insertion hole 4 is opened on the top of the lamination 3. The pressure plate 5 is set on both sides of the top of the lamination 3. The insertion rod 6 is fixedly connected to the inner side of the bottom of the pressure plate 5. The surface of the insertion rod 6 is inserted into the inner wall of the insertion hole 4. A screw sleeve 7 is fixedly installed on the outer side of the bottom of the pressure plate 5. A screw rod 8 is threadedly connected to the inner wall of the screw sleeve 7. A drive assembly 9 is fixedly installed on the surface of the screw rod 8. Limiting assemblies 10 are opened on both sides of the top of the pressure plate 5.
[0024] refer to Figures 1 to 3 The drive assembly 9 includes a helical gear 91, which is fixedly installed on the bottom of the surface of the screw 8. The inner side of the helical gear 91 is meshed with a helical gear 92. A dual-axis motor 93 is fixedly installed on the bottom of the inner wall of the worktable 1. The output end of the dual-axis motor 93 is fixedly connected to the inner side of the helical gear 92.
[0025] As a technical optimization of this utility model, by setting the drive component 9, the dual-axis motor 93 can drive the helical gear 2 92 to rotate, and the helical gear 2 92 can drive the helical gear 1 91 to rotate, so that the helical gear 1 91 can drive the screw 8 to rotate in the screw sleeve 7 and thus drive the pressure plate 5 to press down. This ensures that the pressure plate 5 is subjected to uniform force during the movement, avoids shaking caused by unstable power, effectively improves the stability of the movement of the pressure plate 5, and thus ensures the stacking accuracy of the iron chip 3.
[0026] refer to Figures 1 to 3The limiting component 10 includes a limiting hole 101, which is opened on both sides of the top of the pressure plate 5. A limiting rod 102 is movably connected to the inner wall of the limiting hole 101, and the bottom of the limiting rod 102 is fixedly connected to the top of the worktable 1.
[0027] As a technical optimization of this utility model, by setting the limiting component 10, the limiting hole 101 can cooperate with the limiting rod 102, which can accurately limit the movement trajectory of the pressure plate 5 in the vertical direction, prevent the pressure plate 5 from shifting laterally or tilting when subjected to pressure or other external forces, and ensure that the pressure plate 5 can perform the pressing operation on the iron chip 3 vertically and stably, which greatly improves the stability of the movement of the pressure plate 5 and helps to improve the alignment accuracy of the stacked iron chip 3.
[0028] refer to Figures 1 to 3 A control box 11 is fixedly installed on the right side of the workbench 1. The control box 11 is electrically connected to the dual-axis motor 93 through wires.
[0029] As a technical optimization of this utility model, by setting up a control box 11, the operator can conveniently control the start, stop and speed adjustment of the dual-axis motor 93 through the control box 11, thereby accurately controlling the pressing process of the pressure plate 5. Compared with manual operation, it is more stable and efficient, and improves the controllability and precision of the overall stacking process.
[0030] refer to Figures 1 to 3 Guide plates 12 are fixedly connected to both sides of the top of the workbench 1. The surface of the pressure plate 5 is movably connected to the inner wall of the guide plate 12. The guide plate 12 is U-shaped.
[0031] As a technical optimization of this utility model, by setting the guide plate 12, the guide plate 12 can provide a clear guiding path for the movement of the pressure plate 5, further enhance the stability of the pressure plate 5 during the movement, prevent it from deviating, ensure that the pressure plate 5 can accurately press the iron chip 3, and improve the stacking accuracy.
[0032] refer to Figures 1 to 3 The guide plate 12 has grooves 13 on both sides of its inner wall, and the pressure plate 5 has balls 14 movably embedded on both sides. The surface of the balls 14 is movably connected to the inner wall of the grooves 13.
[0033] As a technical optimization of this utility model, by setting the slide groove 13 and the ball bearing 14, the ball bearing 14 can be movably connected to the inner wall of the slide groove 13, which can transform the sliding friction between the pressure plate 5 and the guide plate 12 into rolling friction, greatly reducing the frictional resistance, making the pressure plate 5 move more smoothly, reducing the occurrence of jamming, and ensuring the stability of the movement of the pressure plate 5.
[0034] refer to Figures 1 to 3The bottom of the screw 8 is movably connected to a movable seat 15, which is fixedly connected to both sides of the bottom of the inner wall of the workbench 1.
[0035] As a technical optimization of this utility model, by setting the movable seat 15, the movable seat 15 can be fixed on both sides of the bottom of the inner wall of the worktable 1, which can provide a stable support point for the screw 8, ensuring that the screw 8 remains stable during rotation and will not shake or deviate due to uneven force, thereby ensuring that the process of driving the pressure plate 5 is stable and reliable, and improving the smoothness of the movement of the pressure plate 5.
[0036] The working principle and usage process of this utility model are as follows: When using the automatic alignment fixture for stacked iron cores, firstly, the positioning device 2 is fixedly installed on the top of the workbench 1. Then, the iron core 3 is movably connected to the surface of the positioning device 2. The positioning device 2 is used to initially position the iron core 3, ensuring accurate stacking. Next, the user starts the dual-axis motor 93 through the control box 11. The output end of the dual-axis motor 93 drives the second helical gear 92 to rotate. The second helical gear 92 meshes with the first helical gear 91, thereby driving the first helical gear 91 to rotate. The first helical gear 91 drives the screw 8 to rotate within the screw sleeve 7. Since the screw sleeve 7 is fixed to the bottom of the pressure plate 5, the rotation of the screw 8 causes the pressure plate 5 to move downwards. During this process, the limiting hole 101 cooperates with the limiting rod 102 to precisely limit the vertical movement trajectory of the pressure plate 5, preventing lateral deviation or tilting. The guide plate 12, internal sliding groove 13, and ball bearings 1... 4 also provides synchronous assistance. The U-shaped guide plate 12 provides a guiding path for the pressure plate 5. The ball bearings 14 in the groove 13 convert the sliding friction between the pressure plate 5 and the guide plate 12 into rolling friction, reducing frictional resistance and ensuring that the pressure plate 5 moves down smoothly. When the pressure plate 5 moves above the iron chip 3, the insertion rod 6 is inserted into the corresponding insertion hole 4 on the top of the iron chip 3. Then the pressure plate 5 continues to press down, firmly pressing the iron chip 3. Through the continuous operation of the screw 8, the screw sleeve 7 and the drive assembly 9, compared with the traditional spring structure, it can provide stable pressure that is not affected by changes in the number or thickness of the stacked iron chips 3, avoid the pressure plate 5 from shaking or jamming, ensure that the position of the iron chip 3 is fixed during the stacking process, and improve the stacking accuracy. After the iron chip 3 is stacked and pressed, if it is necessary to reset the pressure plate 5, the operator adjusts the dual-axis motor 93 to reverse through the control box 11, and the screw 8 rotates in the opposite direction, driving the pressure plate 5 to move up and reset, so that the iron chip 3 can be removed.
[0037] In summary, this automatic alignment fixture for stacked iron core laminations, through the configuration of screw 8, screw sleeve 7, drive assembly 9, and limit assembly 10, enables the threaded connection between screw sleeve 7 and screw 8, in conjunction with drive assembly 9, to achieve stable downward pressing of pressure plate 5. Compared to the traditional method relying on springs, it eliminates the vibration and jamming problems caused by nonlinear changes in spring elastic force. Regardless of changes in the number or thickness of stacked iron core laminations 3, it can maintain stable pressure, effectively improving the smoothness of pressure plate 5 movement and stacking accuracy. It solves the problem that when the electric push rod pushes the pressure plate downward, the nonlinear changes in spring elastic force can easily cause vibration or jamming in the pressure plate movement. Especially when the number or thickness of stacked iron core laminations changes, the dynamic balance between pushing force and elastic force is broken, directly affecting the alignment accuracy of stacked iron core laminations. At the same time, the compression spring inevitably experiences elastic decay after long-term use, leading to positional deviation when the pressure plate is reset.
[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic alignment fixture for stacked motor core laminations, comprising a worktable (1), a positioning device (2), laminations (3), insertion holes (4), a pressure plate (5), and insertion rods (6), characterized in that: The positioning device (2) is fixedly installed on the top of the workbench (1). The iron chip (3) is movably connected to the surface of the positioning device (2). The insertion hole (4) is opened on the top of the iron chip (3). The pressure plate (5) is set on both sides of the top of the iron chip (3). The insertion rod (6) is fixedly connected to the inner side of the bottom of the pressure plate (5). The surface of the insertion rod (6) is inserted into the inner wall of the insertion hole (4). A screw sleeve (7) is fixedly installed on the outer side of the bottom of the pressure plate (5). A screw rod (8) is threadedly connected to the inner wall of the screw sleeve (7). A drive assembly (9) is fixedly installed on the surface of the screw rod (8). Limiting assemblies (10) are opened on both sides of the top of the pressure plate (5).
2. The motor core lamination automatic alignment fixture of claim 1, wherein: The drive assembly (9) includes a helical tooth (91), which is fixedly installed on the bottom of the screw (8) surface. The inner side of the helical tooth (91) is meshed with a helical tooth (92). A dual-axis motor (93) is fixedly installed on the bottom of the inner wall of the worktable (1). The output end of the dual-axis motor (93) is fixedly connected to the inner side of the helical tooth (92).
3. The motor core lamination automatic alignment fixture of claim 1, wherein: The limiting component (10) includes a limiting hole (101), which is opened on both sides of the top of the pressure plate (5). A limiting rod (102) is movably connected to the inner wall of the limiting hole (101), and the bottom of the limiting rod (102) is fixedly connected to the top of the worktable (1).
4. The motor core lamination automatic alignment fixture of claim 2, wherein: A control box (11) is fixedly installed on the right side of the workbench (1), and the control box (11) is electrically connected to the dual-axis motor (93) through wires.
5. The motor core lamination automatic alignment fixture of claim 1, wherein: Guide plates (12) are fixedly connected to both sides of the top of the workbench (1). The surface of the pressure plate (5) is movably connected to the inner wall of the guide plate (12). The guide plate (12) is U-shaped.
6. The motor core lamination automatic alignment fixture of claim 5, wherein: The guide plate (12) has grooves (13) on both sides of its inner wall, and ball bearings (14) are movably embedded on both sides of the pressure plate (5). The surface of the ball bearings (14) is movably connected to the inner wall of the groove (13).
7. The motor core lamination automatic alignment fixture of claim 1, wherein: The bottom of the screw (8) is movably connected to a movable seat (15), which is fixedly connected to both sides of the bottom of the inner wall of the workbench (1).