A kind of motor stator and circuit board precision positioning is used to press equipment frock

Abstract

The utility model relates to the technical field of circuit board production, especially relates to a press -fitting frock for motor stator and circuit board precision positioning, the utility model discloses the reasonable structure design, it is mainly by frame, adsorption base, lifting rod, first locating piece, second locating piece and third locating piece are composed, and each part cooperates and matches, and the first locating piece and second locating piece are used to provide the positioning for motor stator, and the third locating piece is used to provide the positioning for annular circuit board, and the lifting rod drives third locating piece and the annular circuit board on it and the motor stator below carry out precision butt joint, and the pressure of avoiding the bruise to annular circuit board can be avoided through the control of lifting, and the adsorption base can carry out inner adsorption locking to motor stator by first locating piece and second locating piece, and the rotation displacement of motor stator and annular circuit board in subsequent circumferential welding process is avoided.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing technology, and in particular to a press-fitting fixture for precise positioning of motor stators and circuit boards. Background Technology

[0002] As a core component of high-precision motion control, the welding quality of the servo motor stator and the toroidal circuit board directly affects the motor's stability, lifespan, and performance. Precision positioning technology, through high-precision fixtures, visual calibration systems, or laser positioning, ensures that the positional error of the components before welding is controlled within the micrometer level, thus laying a solid foundation for subsequent processes. The benefits of precision positioning are: improved welding quality and reliability: Precision positioning ensures accurate alignment of the solder pads and stator windings, avoiding insufficient solder connection (cold solder joints) or adjacent solder joint adhesion (short circuits) caused by misalignment. Accurate positioning maximizes the contact area of ​​the solder joints, reducing contact resistance, energy loss, and heat generation, thereby extending the motor's lifespan. Enhanced product consistency and production efficiency: Precision positioning controls assembly errors upfront, avoiding later disassembly and repair due to poor welding, significantly saving material and labor costs.

[0003] Traditional press-fitting fixtures have shortcomings in the positioning and press-fitting process before welding the motor stator and circuit board. Firstly, they cannot achieve precise positioning, affecting the subsequent welding quality. Secondly, to prevent compression deformation of the motor stator during press-fitting, the vertical pressure is set too low, which leads to insufficient pressure on the circuit board.

[0004] Existing combined gear reducers with bimetallic worm gears have shortcomings in use. First, their structural design is not reasonable, which is not conducive to rapid assembly. Second, they require fasteners such as bolts for assembly and connection, resulting in high connection costs and cumbersome operation. Therefore, optimization and improvement are needed. Summary of the Invention

[0005] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and provide a press-fitting fixture for precise positioning of motor stators and circuit boards.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0007] A press-fitting fixture for precise positioning of a motor stator and a circuit board includes a frame, an adsorption base, a lifting rod, a first positioning component, a second positioning component, and a third positioning component. The bottom end of the frame is provided with an adsorption base. The adsorption base provides positioning for the motor stator through the first and second positioning components. The lifting rod provides positioning for the annular circuit board through the third positioning component and can drive the annular circuit board to precisely dock with the motor stator.

[0008] The first positioning component includes a base and a core column located at its center. The upper side of the base is provided with a positioning groove around the core column. The upper end of the core column is provided with an insertion groove. The bottom end of the core column is provided with an axial negative pressure hole. The side end of the core column is provided with a plurality of inner radial negative pressure holes communicating with the axial negative pressure holes.

[0009] The second positioning component includes a positioning post, the bottom side of which is provided with a positioning protrusion that mates with a positioning groove, the upper end of which is provided with a groove, the lower part of which is provided with a through groove that mates with the outer diameter of the core post, and the inner wall of the through groove is provided with a plurality of outward radial negative pressure holes.

[0010] The third positioning component includes a pressure plate, the lower side of which is provided with a positioning protrusion tube that matches the outer diameter of the core post, a plug-in post that matches the plug-in slot is installed at the center of the pressure plate, and a pressure groove that matches the inner diameter of the annular circuit board is opened on the outer periphery of the pressure plate.

[0011] Furthermore, in the aforementioned press-fitting fixture for precise positioning of the motor stator and circuit board, the lifting rod is a manual lifting rod or an electric lifting rod.

[0012] Furthermore, in the aforementioned press-fitting fixture for precise positioning of the motor stator and circuit board, the adsorption base has a built-in vacuum pump, and the suction end of the vacuum pump is connected to the bottom end of the axial negative pressure hole in the first positioning component.

[0013] Furthermore, in the aforementioned press-fitting fixture for precise positioning of the motor stator and circuit board, a ring seat is installed on the upper side of the base of the first positioning component at the periphery of the core column. The inner diameter of the ring seat matches the outer diameter of the positioning column, and the upper end of the ring seat is provided with a stator positioning groove to facilitate the insertion of the motor stator.

[0014] Furthermore, in the aforementioned press-fitting fixture for precise positioning of the motor stator and circuit board, when the positioning protrusion of the second positioning member engages with the corresponding positioning groove, the outer radial negative pressure hole communicates with the corresponding inner radial negative pressure hole.

[0015] Furthermore, in the aforementioned press-fitting fixture for precise positioning of the motor stator and circuit board, the third positioning component has a first pressure relief groove on the outer surface of the plug-in post, and the inner wall of the positioning protrusion has a second pressure relief groove. The length directions of the first pressure relief groove and the second pressure relief groove are parallel to the axial direction of the plug-in post.

[0016] The beneficial effects of this utility model are:

[0017] This utility model has a reasonable structural design, mainly composed of a frame, an adsorption base, a lifting rod, a first positioning component, a second positioning component, and a third positioning component. The components work together to provide positioning for the motor stator using the first and second positioning components, and positioning for the annular circuit board using the third positioning component. The lifting rod drives the third positioning component and the annular circuit board on it to precisely align with the motor stator below. By controlling the lifting pressure, damage to the annular circuit board can be avoided. At the same time, the adsorption base can internally adsorb and lock the motor stator using the first and second positioning components, preventing rotational displacement of the motor stator and the annular circuit board during subsequent circumferential welding.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the motor stator and the ring circuit board in this utility model;

[0022] Figure 3 This is an assembly diagram of the three positioning components in this utility model;

[0023] Figure 4 This is a structural schematic diagram of the first positioning component in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the second positioning component in this utility model;

[0025] Figure 6 This is a structural schematic diagram of the third positioning component in this utility model;

[0026] In the attached diagram, the components represented by each number are as follows:

[0027] 1-Frame, 2-Adsorption base, 3-Lifting rod, 4-First positioning component, 401-Base, 402-Core column, 403-Positioning groove, 404-Intercepting groove, 405-Axial negative pressure hole, 406-Inner radial negative pressure hole, 5-Second positioning component, 501-Positioning post, 502-Positioning protrusion, 503-Groove, 504-Through groove, 505-Outer radial negative pressure hole, 6-Third positioning component, 601-Pressure plate, 602-Positioning protrusion tube, 603-Intercepting post, 7-Motor stator, 8-Annular circuit board. Detailed Implementation

[0028] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-6 As shown, this embodiment provides a press-fitting fixture for precise positioning of a motor stator and a circuit board, including a frame 1, an adsorption base 2, a lifting rod 3, a first positioning component 4, a second positioning component 5, and a third positioning component 6. The bottom end of the frame 1 is provided with the adsorption base 2, which provides positioning for the motor stator 7 via the first positioning component 4 and the second positioning component 5. The lifting rod 3 provides positioning for the annular circuit board 8 via the third positioning component 6, and can drive the annular circuit board 8 to precisely mate with the overall cylindrical motor stator 7.

[0030] In this embodiment, the first positioning member 4 includes a base 401 and a core post 402 located at its center. The upper side of the base 401 is provided with a positioning groove 403 around the core post 402. The upper end of the core post 402 is provided with an insertion groove 404. The bottom end of the core post 402 is provided with an axial negative pressure hole 405. The side end of the core post 402 is provided with a plurality of inner radial negative pressure holes 406 communicating with the axial negative pressure holes 405.

[0031] In this embodiment, the second positioning member 5 includes a positioning post 501. The bottom side of the positioning post 501 is provided with a positioning protrusion 502 that cooperates with the positioning groove 403. The upper end of the positioning post 501 is provided with a groove 503. The lower part of the groove 503 is provided with a through groove 504 that cooperates with the outer diameter of the core post 402. The inner wall of the through groove 504 is provided with a plurality of outer radial negative pressure holes 505.

[0032] In this embodiment, the third positioning member 6 includes a pressure plate 601. The lower side of the pressure plate 601 is provided with a positioning protrusion 602 that matches the outer diameter of the core post 402. The center of the pressure plate 601 is provided with a plug post 603 that matches the plug groove 404. The outer periphery of the pressure plate 601 is provided with a pressure groove that matches the inner diameter of the annular circuit board 8.

[0033] In this embodiment, the lifting rod 3 is a manual lifting rod or an electric lifting rod.

[0034] In this embodiment, a vacuum pump is built into the adsorption base 2, and the suction end of the vacuum pump is connected to the bottom end of the axial negative pressure hole 405 in the first positioning member 4.

[0035] In this embodiment, a ring seat is installed on the upper side of the base 401 of the first positioning member 4, which is located around the core column 402. The inner diameter of the ring seat matches the outer diameter of the positioning column 501. The upper end of the ring seat is provided with a stator positioning groove to facilitate the insertion of the motor stator 7.

[0036] In this embodiment, when the positioning protrusion 502 of the second positioning member 5 engages with the corresponding positioning groove 403, the outer radial negative pressure hole 505 communicates with the corresponding inner radial negative pressure hole 406.

[0037] In this embodiment, the third positioning member 6 has a first pressure relief groove on the outer surface of the plug-in post 603, and a second pressure relief groove is formed on the inner wall of the positioning protrusion 602. The length directions of the first and second pressure relief grooves are parallel to the axial direction of the plug-in post 603. The design of the first and second pressure relief grooves is to allow the gas inside the third positioning member 6 to be discharged during the pressing process, while the resistance to gas discharge has a certain reduction effect to prevent the third positioning member 6 from damaging the annular circuit board 8.

[0038] In this embodiment, the second positioning component 5 and the third positioning component 6 are detachable and replaceable components to meet the precision positioning requirements of the ring circuit board 8 and the motor stator 7 of different specifications.

[0039] A specific application of this embodiment is as follows: This press-fitting fixture mainly consists of a frame 1, an adsorption base 2, a lifting rod 3, a first positioning component 4, a second positioning component 5, and a third positioning component 6. The components work together to provide positioning for the motor stator 7 using the first positioning component 4 and the second positioning component 5, and to provide positioning for the annular circuit board 8 using the third positioning component 6. The lifting rod 3 drives the third positioning component 6 and the annular circuit board 8 on it to precisely align with the motor stator 7 below. By controlling the pressure of the lifting rod 3, damage to the annular circuit board 8 can be avoided. At the same time, the adsorption base 2 can internally adsorb and lock the motor stator 7 using the first positioning component 4 and the second positioning component 5, preventing the motor stator 7 and the annular circuit board 8 from rotating or shifting during subsequent circumferential welding.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A press-fitting fixture for precision positioning of a motor stator and a circuit board, characterized in that, The device includes a frame, an adsorption base, a lifting rod, a first positioning component, a second positioning component, and a third positioning component. The bottom of the frame is provided with an adsorption base. The adsorption base provides positioning for the motor stator through the first and second positioning components. The lifting rod provides positioning for the annular circuit board through the third positioning component and can drive the annular circuit board to make precise docking with the motor stator. The first positioning component includes a base and a core column located at its center. The upper side of the base is provided with a positioning groove around the core column. The upper end of the core column is provided with an insertion groove. The bottom end of the core column is provided with an axial negative pressure hole. The side end of the core column is provided with a plurality of inner radial negative pressure holes communicating with the axial negative pressure holes. The second positioning component includes a positioning post, the bottom side of which is provided with a positioning protrusion that mates with a positioning groove, the upper end of which is provided with a groove, the lower part of which is provided with a through groove that mates with the outer diameter of the core post, and the inner wall of the through groove is provided with a plurality of outward radial negative pressure holes. The third positioning component includes a pressure plate, the lower side of which is provided with a positioning protrusion tube that matches the outer diameter of the core post, a plug-in post that matches the plug-in slot is installed at the center of the pressure plate, and a pressure groove that matches the inner diameter of the annular circuit board is opened on the outer periphery of the pressure plate.

2. The press-fitting fixture for precision positioning of motor stator and circuit board according to claim 1, characterized in that, The lifting rod can be a manual lifting rod or an electric lifting rod.

3. The press-fitting fixture for precision positioning of motor stator and circuit board according to claim 1, characterized in that, The adsorption base has a built-in vacuum pump, and the suction end of the vacuum pump is connected to the bottom end of the axial negative pressure hole in the first positioning component.

4. The press-fitting fixture for precision positioning of motor stator and circuit board according to claim 1, characterized in that, In the first positioning component, a ring seat is installed on the upper side of the base at the periphery of the core column. The inner diameter of the ring seat matches the outer diameter of the positioning column. The upper end of the ring seat is provided with a stator positioning groove to facilitate the insertion of the motor stator.

5. The press-fitting fixture for precision positioning of a motor stator and a circuit board according to claim 1, characterized in that, When the positioning protrusion of the second positioning member engages with the corresponding positioning groove, the outer radial negative pressure hole and the corresponding inner radial negative pressure hole are interconnected.

6. The press-fitting fixture for precision positioning of a motor stator and a circuit board according to claim 1, characterized in that, The third positioning component has a first pressure relief groove on the outer surface of the plug-in post, and the inner wall of the positioning protrusion has a second pressure relief groove. The length directions of the first pressure relief groove and the second pressure relief groove are parallel to the axial direction of the plug-in post.

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