Diameter-adjustable motor iron core laminating tool
By designing an adjustable diameter motor core stacking fixture, and adopting multi-point synchronous stacking and an adjustable limiting structure, the problem of uneven force distribution in existing motor core stacking devices has been solved, thereby improving stacking efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI LIANYUANDA PRECISION MACHINED CO LTD
- Filing Date
- 2025-03-17
- Publication Date
- 2026-05-26
AI Technical Summary
In the existing technology, the motor core stacking device cannot achieve multi-point synchronous stacking, resulting in uneven stress, difficulty in ensuring concentricity and stacking coefficient, and low production efficiency.
An adjustable diameter motor core stacking fixture was designed, including a fixture base, an upper support, a hydraulic cylinder, an annular pressure plate, and a rectangular pressure plate. Multi-point synchronous stacking is achieved through a lead screw and a limit slider, and the spacing and height of the inner diameter limit rods can be adjusted to accommodate motor cores of different diameters and heights.
This technology enables multi-point synchronous stacking of motor cores, improving stacking efficiency and quality, ensuring uniform stress distribution and stacking accuracy, and enhancing production efficiency.
Smart Images
Figure CN224289560U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of iron core stacking equipment, specifically an adjustable diameter motor iron core stacking fixture. Background Technology
[0002] The stator core is a crucial component of the motor's magnetic circuit. Together with the rotor core and the air gap between the stator and rotor, it forms the complete magnetic circuit of the motor. In asynchronous motors, the magnetic flux within the stator core is alternating, resulting in core losses. Core losses consist of two parts: hysteresis losses and eddy current losses. The stator core is a vital component of the stator and a major part of the motor's magnetic circuit. The motor's electronic core is constructed by laminating and welding layers of laminations together; this lamination process is a critical step in motor stator manufacturing.
[0003] The prior art, patent application number 202120130039.0, describes a stacking fixture for stator cores of wind turbine main shafts. It includes a lower positioning plate, an upper positioning plate, and several positioning screws connected between the lower and upper positioning plates. The fixture has a reasonable structural design and is easy to operate. The positioning sleeve forms a circumferential surface along the circumference, and its inner side is fixed by a support plate. By adjusting the diameter of the positioning sleeve, the outer circumferential diameter of the positioning sleeve can be adjusted, thus making it suitable for stacking laminations with different inner hole sizes and highly versatile. However, it cannot perform multi-point synchronous stacking of the motor core, resulting in uneven stress on the stator core stacking device, and the inability to effectively guarantee concentricity and stacking coefficient, leading to low production efficiency. Utility Model Content
[0004] The purpose of this invention is to provide an adjustable diameter motor core stacking fixture to solve the problem that the existing technology cannot perform multi-point synchronous stacking of motor cores, resulting in uneven force on the stator core stacking device, inability to effectively guarantee concentricity and stacking coefficient, and low production efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable diameter motor core stacking fixture, including a fixture base, an upper support on the upper side of the fixture base, a stacking frame on the top of the upper support via a hydraulic cylinder, and the stacking frame including an annular pressure plate and a rectangular pressure plate. Two limiting sliders are provided in the upper part of the fixture base via a screw thread, and an inner diameter limiting rod is provided on the upper side of the two limiting sliders. The height of the inner diameter limiting rod is adjustable.
[0006] Furthermore, the rectangular pressure plate is fixedly installed inside the annular pressure plate, and the annular pressure plate and the rectangular pressure plate are set parallel to the upper surface of the tooling base.
[0007] Furthermore, the inner wall of the upper support is provided with a limiting groove, and a guide rod is also provided in the limiting groove. The two ends of the stacking frame are provided with guide sliders that are slidably arranged with the guide rods.
[0008] Furthermore, the lead screw is rotatably mounted in the guide groove on the upper side of the tooling base, and two sets of opposite external threads are provided on the outer sides of both ends of the lead screw, and the two limiting sliders are respectively threadedly connected to the two sets of external threads.
[0009] Furthermore, one end of the lead screw is provided with an adjustment handle, and the internal thread of the adjustment handle is provided with a locking bolt.
[0010] Furthermore, the inner diameter limiting rod includes a first limiting rod disposed on the upper part of the limiting slider, and a second limiting rod is elastically slidably disposed in the sliding cavity inside the upper side of the first limiting rod by means of a spring.
[0011] Furthermore, the second limiting rod is provided with limiting fins on its outer side, and the limiting fins are slidably disposed with the limiting sliding hole inside the first limiting rod.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. The present invention, due to the presence of annular and rectangular pressure plates in the stacking frame, increases the stacking area and enables multi-point synchronous stacking of the motor core, which facilitates uniform stress distribution during the longitudinal stacking process of the motor core and improves the efficiency and quality of stacking.
[0014] 2. In addition, the tooling base of this utility model has two limiting sliders inside through a lead screw with opposing threads, and the upper side of the two limiting sliders is provided with an inner diameter limiting rod. By rotating the lead screw to drive the two limiting sliders to move and adjust, the distance between the two inner diameter limiting rods can be adjusted, which is convenient for limiting the internal structure of motor cores of different diameters and improves the flexibility of motor core stacking and positioning.
[0015] 3. This utility model includes an inner diameter limiting rod comprising a first limiting rod disposed on the upper part of the limiting slider, a second limiting rod elastically slidably disposed in the sliding cavity inside the upper side of the first limiting rod via a spring, and a limiting fin disposed on the outer side of the second limiting rod, wherein the limiting fin is slidably disposed with the limiting sliding hole inside the first limiting rod, thereby making the height of the inner diameter limiting rod adjustable, thus satisfying the internal support limiting treatment for motor cores of different heights, preventing movement when the motor cores are stacked, and improving the accuracy of core stacking. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the tooling base structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the stacking frame structure of this utility model.
[0020] In the diagram: 1. Tooling base; 2. Upper bracket; 3. Hydraulic cylinder; 4. Guide slider; 5. Annular pressure plate; 6. Rectangular pressure plate; 7. Adjusting handle; 8. Limiting groove; 9. Guide rod; 10. Limiting slider; 11. Guide groove; 12. Lead screw; 13. First limiting rod; 14. Second limiting rod; 15. Limiting fin; 16. Limiting sliding hole; 17. Spring. Detailed Implementation
[0021] 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.
[0022] Please see Figure 1 , Figure 2 , Figure 3 In this embodiment of the present invention, an adjustable diameter motor core stacking fixture includes a fixture base 1, an upper support 2 on the upper side of the fixture base 1, and a stacking frame on the top of the upper support 2 via a hydraulic cylinder 3. The stacking frame includes an annular pressure plate 5 and a rectangular pressure plate 6. The rectangular pressure plate 6 is fixedly installed inside the annular pressure plate 5, and the annular pressure plate 5 and the rectangular pressure plate 6 are arranged parallel to the upper surface of the fixture base 1, which increases the stacking area and enables multi-point synchronous stacking of the motor core. This facilitates uniform force distribution during the longitudinal stacking of the motor core and improves the efficiency and quality of the stacking process.
[0023] like Figure 1 and Figure 3As shown, in order to limit the movement of motor cores of different diameters, two limiting sliders 10 are provided on the upper part of the tooling base 1 via opposing threads of a lead screw 12. The upper sides of the two limiting sliders 10 are provided with inner diameter limiting rods. The lead screw 12 is rotatably mounted in the guide groove 11 on the upper side of the tooling base 1, and the outer sides of both ends of the lead screw 12 are provided with two sets of opposite external threads. The two limiting sliders 10 are respectively threaded to the two sets of external threads. One end of the lead screw 12 is provided with an adjusting handle 7, and the internal thread of the adjusting handle 7 is provided with a locking bolt. The two inner diameter limiting rods are used to limit the movement of multiple motor cores, preventing movement when the motor cores are stacked. Furthermore, by rotating the lead screw 12 to drive the two limiting sliders 10 to move and adjust, the distance between the two inner diameter limiting rods can be adjusted, facilitating the limiting of the movement of motor cores of different diameters and improving the flexibility of motor core stacking and positioning.
[0024] like Figure 1 and Figure 3 As shown, the inner wall of the upper support 2 is provided with a limiting groove 8, and a guide rod 9 is also provided in the limiting groove 8. The two ends of the stacking frame are provided with guide sliders 4 that are slidably arranged with the guide rods 9, which are used to slide and guide the stacking frame during lifting and adjustment, which helps to improve the stability of the stacking frame during lifting and stacking.
[0025] like Figure 1 and Figure 3 As shown, in order to meet the internal support and limiting of motor cores of different heights, an inner diameter limiting rod is also included, which is a first limiting rod 13 set on the upper part of the limiting slider 10. A second limiting rod 14 is elastically slidably provided in the sliding cavity inside the upper side of the first limiting rod 13 by means of a spring 17, so that the height of the inner diameter limiting rod is adjustable, thereby meeting the internal support and limiting treatment of motor cores of different heights, preventing movement when the motor cores are stacked, and improving the accuracy of core stacking.
[0026] like Figure 1 and Figure 3 As shown, in order to limit the motor cores of different heights, a limiting fin 15 is provided on the outside of the second limiting rod 14, and the limiting fin 15 is slidably disposed with the limiting sliding hole 16 inside the first limiting rod 13. The radius of the first limiting rod 13 is equal to the sum of the radius of the second limiting rod 14 and the length of a single limiting fin 15. The limiting fin 15 extends the support diameter outside the second limiting rod 14, which makes it easier to keep the first limiting rod 13 and the second limiting rod 14 limiting motor cores of the same size.
[0027] The working principle and usage process of this utility model are as follows: In use, multiple motor cores are stacked longitudinally on the tooling base 1, and two inner diameter limiting rods are used to limit the multiple motor cores. Then, the stacking frame is driven to move down by the hydraulic cylinder 3 to perform the stacking. The stacking frame includes an annular pressure plate 5 and a rectangular pressure plate 6, which increases the stacking area and enables multi-point synchronous stacking of the motor cores. This makes it easier to ensure that the motor cores are subjected to uniform force during longitudinal stacking, which is beneficial to improving the efficiency and quality of stacking.
[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An adjustable diameter motor core stacking fixture, comprising a fixture base (1), characterized in that: The tooling base (1) is provided with an upper support (2) on the upper side. The top of the upper support (2) is provided with a stacking frame via a hydraulic cylinder (3). The stacking frame includes an annular pressure plate (5) and a rectangular pressure plate (6). The upper part of the tooling base (1) is provided with two limiting sliders (10) threaded in opposite directions via a screw (12). The upper side of the two limiting sliders (10) is provided with an inner diameter limiting rod. The height of the inner diameter limiting rod is adjustable.
2. The adjustable diameter motor core stacking fixture according to claim 1, characterized in that: The rectangular pressure plate (6) is fixedly installed inside the annular pressure plate (5), and the annular pressure plate (5) and the rectangular pressure plate (6) are set parallel to the upper surface of the tooling base (1).
3. The adjustable diameter motor core stacking fixture according to claim 1, characterized in that: The upper support (2) has a limiting groove (8) on its inner wall, and a guide rod (9) is provided in the limiting groove (8). The stacking frame has guide sliders (4) that slide with the guide rod (9) at both ends.
4. The adjustable diameter motor core stacking fixture according to claim 1, characterized in that: The lead screw (12) is rotatably mounted in the guide groove (11) on the upper side of the tooling base (1), and the two ends of the lead screw (12) are provided with two opposite sets of external threads. The two limiting sliders (10) are respectively threadedly connected to the two sets of external threads.
5. The adjustable diameter motor core stacking fixture according to claim 4, characterized in that: One end of the lead screw (12) is provided with an adjustment handle (7), and the internal thread of the adjustment handle (7) is provided with a locking bolt.
6. The adjustable diameter motor core stacking fixture according to claim 1, characterized in that: The inner diameter limiting rod includes a first limiting rod (13) disposed on the upper part of the limiting slider (10), and a second limiting rod (14) is elastically slidably disposed in the sliding cavity inside the upper side of the first limiting rod (13) by means of a spring (17).
7. The adjustable diameter motor core stacking fixture according to claim 6, characterized in that: The second limiting rod (14) is provided with a limiting fin (15) on the outside, and the limiting fin (15) is slidably disposed with the limiting sliding hole (16) inside the first limiting rod (13).