Motor coil shaping tool

Abstract

The utility model belongs to the technical field of motor manufacturing, and particularly discloses a motor coil shaping tool which comprises a pressing plate, a gasket, a positioning column, a positioning block and a positioning nail. According to the shaping tool for the motor coil, the height of the motor coil is adjusted through the pressing plate, the radial size of the motor coil is adjusted through the positioning block, and damage possibly caused to an enameled wire in the shaping process of the motor coil is avoided. Besides, the motor coil shaping tool can meet the manufacturing requirements of various model machines, especially for non-standard and high-slot-fullness-rate motor design schemes, can effectively improve the yield of the motor design schemes, is simple to operate, and can reduce the manual difficulty of coil shaping in the model machine manufacturing process, thereby reducing the model machine manufacturing time and improving the production efficiency. The qualified rate of finished products of the manufactured prototype can be guaranteed, and actual reference can be provided for follow-up batch production of motors.

Description

Technical Field

[0001] This utility model belongs to the field of motor manufacturing technology and relates to a motor coil shaping fixture. Background Technology

[0002] As the performance requirements for motors become increasingly specific, there is a growing trend towards diverse winding schemes in motor design. During the trial production of motors with different winding schemes, when there are specific requirements for the size of the motor coil, the lack of suitable tooling during the prototype production stage often makes prototype manufacturing more difficult. This significantly increases the prototype production time and the failure rate. Furthermore, the lack of process stability in prototype manufacturing also makes it difficult to evaluate the motor for mass production.

[0003] Currently, three-phase asynchronous motors are typically hand-shaped using nylon or wooden coil shaping fixtures. The bottom of this fixture is a cylinder that can be inserted into the inner diameter of the stator core for positioning and fixing. The top of the fixture consists of a cylinder that extends above the coil and has a certain angle. During shaping, the fixture is inserted into the inner diameter of the stator core, and then the coil is gently tapped from the outside in with a nylon or wooden hammer to draw it towards the center, thus achieving the shaping purpose.

[0004] For motors with low slot fill factor, the shaping is relatively simple due to the smaller amount of copper or aluminum wire used, and the traditional motor coil shaping fixtures mentioned above are generally used. However, when shaping the coils of prototypes with high slot fill factor, the increased amount of copper or aluminum wire reduces the coil's deformation capacity, making shaping difficult. The difficulty in winding also results in unevenness in the overall shape of the motor coil. Furthermore, due to the overall size requirements of the coil, traditional coil shaping fixtures cannot accurately control the shaping dimensions, increasing shaping time and reducing efficiency. Moreover, the increased number of hammer blows on the coil will increase the damage rate of the enameled wire, leading to an increased rate of motor defects and scrap, thus increasing costs.

[0005] Therefore, it is evident that the structure of the existing motor coil shaping fixture needs further improvement. Utility Model Content

[0006] The purpose of this utility model is to propose a motor coil shaping fixture that can meet the manufacturing needs of various prototypes, and improve the shaping efficiency of motor coils while ensuring the shaping quality.

[0007] To achieve the above objectives, this utility model adopts the following technical solution:

[0008] A motor coil shaping fixture includes a positioning post, a pressure plate, a positioning block, and a positioning pin;

[0009] The positioning post consists of a positioning part, an enlarged hole part, and a sliding part;

[0010] The positioning part, the enlarged hole part, and the sliding part are arranged and connected sequentially from bottom to top. The positioning part is used to insert into the stator core, the enlarged hole part is used to fit against the inner side of the motor coil, and the sliding part slides with the pressure plate.

[0011] The pressure plate is located above the motor coil, and a first limiting hole is provided on the pressure plate;

[0012] The positioning block is located on the outside of the motor coil. There are several positioning blocks, and each positioning block has at least one row of second limiting holes.

[0013] The first and second limiting holes can be connected by positioning pins.

[0014] Preferably, a gasket is fitted on the sliding part, and the gasket is located between the enlarged hole part and the pressure plate.

[0015] Preferably, the pressure plate, gasket, positioning post, and positioning block are made of nylon material.

[0016] Preferably, there are several gaskets.

[0017] Preferably, the positioning blocks are arranged at equal intervals along the outer circumference of the motor coil.

[0018] Preferably, each positioning block has at least two rows of second limiting holes along the radial direction.

[0019] Preferably, the enlarged portion is frustoconical in shape.

[0020] Preferably, the positioning block is arc-shaped.

[0021] Preferably, the first limiting hole is arranged along the edge of the pressure plate.

[0022] Compared with the prior art, this utility model has the following advantages:

[0023] As described above, this utility model relates to a motor coil shaping fixture, which adjusts the height of the motor coil using a pressure plate and adjusts the radial dimension of the motor coil using a positioning block. This avoids potential damage to the enameled wire during the motor coil shaping process and prevents insulation withstand voltage failures caused by enameled wire damage. Furthermore, this motor coil shaping fixture is not only suitable for three-phase asynchronous motors but also widely applicable to motors requiring manual coil shaping. It can meet the production needs of various prototypes, especially for non-standard and high-slot-fill-rate motors, where this fixture can improve the yield rate. In addition, this motor coil shaping fixture is simple to operate, reducing the manual difficulty of coil shaping during prototype production, thereby reducing prototype production time, and ensuring a high yield rate for the produced prototypes. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0025] Figure 1 This is an exploded view of the motor coil shaping fixture according to an embodiment of the present invention. Figure 1 .

[0026] Figure 2 This is a front view of the motor coil shaping fixture according to an embodiment of the present utility model.

[0027] Figure 3 This is a perspective view of the motor coil shaping fixture according to an embodiment of the present utility model.

[0028] Figure 4 This is an exploded view of the motor coil shaping fixture according to an embodiment of the present invention. Figure 2 .

[0029] Figure 5 This is a top view of the motor coil shaping fixture according to an embodiment of the present invention.

[0030] Among them, 1-positioning pin, 2-pressure plate, 21-first limiting hole, 3-shim, 4-positioning post, 41-positioning part, 42-expanding hole part, 43-sliding part, 5-positioning block, 51-second limiting hole, 61-motor coil, 62-stator core. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0032] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] Example:

[0038] like Figures 1 to 5 As shown, in this embodiment, the motor coil shaping fixture includes a positioning pin 1, a pressure plate 2, a gasket 3, a positioning post 4, and a positioning block 5.

[0039] The positioning post 4 consists of a positioning part 41, an enlarged hole part 42, and a sliding part 43. These parts are arranged sequentially from bottom to top and connected. The positioning part 41 is inserted into the stator core 62; inserting it into the center of the stator core 62 provides positioning and fixation. The enlarged hole part 42 fits against the inner side of the motor coil 61, and the positioning block 5 cooperates with the enlarged hole part 42 to adjust the radial dimension of the motor coil 61. The sliding part 43 slides with the pressure plate 2 to adjust the height of the motor coil 61.

[0040] The pressure plate 2 is located above the motor coil 61. The height of the motor coil 61 can be adjusted by moving the pressure plate 2 along the sliding part 43. The pressure plate 2 is provided with a first limiting hole 21.

[0041] The positioning block 5 is located on the outside of the motor coil 61. There are several positioning blocks 5, and each positioning block 5 has at least one row of second limiting holes 51. The first limiting hole 21 and the second limiting hole 51 can be connected by the positioning pin 1. The enlarged hole portion 42 is preferably frustoconical in shape. The inner side of the motor coil 61 is attached to the enlarged hole portion 42, and the outer side of the motor coil 61 is in contact with the positioning block 5. By adjusting the position of the positioning block 5, and then aligning the first limiting hole 21 and the second limiting hole 51 by the positioning pin 1, the radial dimension of the motor coil 61 can be adjusted.

[0042] In this embodiment of the motor coil shaping fixture, the pressure plate 2 is detachably mounted on the upper end of the positioning post 4, and a shim 3 is provided between the pressure plate 2 and the positioning post 4. Specifically, the shim 3 is sleeved on the sliding part 43, and the shim 3 is located between the enlarged hole part 42 and the pressure plate 2. Several shims 3 are provided, and the required height for shaping the motor coil 61 can be flexibly adjusted by adjusting the number of shims 3.

[0043] In the motor coil shaping fixture of this embodiment, there are several positioning pins 1, the first limiting hole 21 is arranged along the edge of the pressure plate 2, and the positioning block 5 and the pressure plate 2 are detachably connected by the positioning pins 1, making the motor coil shaping fixture easier to operate as a whole.

[0044] Furthermore, the positioning blocks 5 are arranged at equal intervals along the outer circumference of the motor coil 61. In this embodiment, there are four positioning blocks 5, which are preferably arc-shaped, as they can adapt to the outer side of the motor coil 61. The four positioning blocks 5 can effectively adjust the shape of the motor coil 61 and control its size. Moreover, adjusting the shape of the motor coil 61 by hammering the positioning blocks 5 can greatly avoid damage to the enameled wire, improve the yield rate, and thus reduce costs.

[0045] In addition, the positioning block 5 is provided with several rows of parallel second limiting holes 51. When each positioning block 5 has at least two rows of second limiting holes 51 radially arranged, the second limiting holes 51 can cooperate with the positioning pin 1. By aligning the first limiting hole 21 with the second limiting holes 51 in different rows and inserting the positioning pin 1 into the second limiting holes 51 in different rows, the radial dimension of the motor coil 61 during the forming process can be adjusted. The motor coil forming fixture of this embodiment can accurately control the outer dimension of the coil through the adjustable positioning block 5, which can greatly improve the forming efficiency, save costs, and prevent damage to the enameled wire and insulation withstand voltage failure during repeated debugging and confirmation of the outer dimension of the motor coil 61. At the same time, this design is simple to operate, reliable in process, and easy to implement quickly.

[0046] In this utility model's motor coil forming fixture, the pressure plate 2, gasket 3, positioning pin 4, and positioning block 5 are preferably made of nylon material. Specifically, in this motor coil forming fixture, all parts except the positioning pin 1 can be processed and shaped using nylon rods, which is inexpensive, of moderate weight, and easy to operate.

[0047] The process of using the motor coil shaping fixture in this embodiment is as follows:

[0048] First, insert the positioning part 41 into the stator core 62. At this time, the enlarged hole part 42 fits against the inner side of the motor coil 61. Then, according to the size requirements of the motor coil 61, select a suitable thickness and a suitable number of shims 3 and put them on the sliding part 43 of the positioning post 4. Then, cover the top of the positioning post 4 with the pressure plate 2 and use a wooden hammer to knock the pressure plate 2 so that the pressure plate 2 moves along the sliding part 43, thereby shaping the height of the motor coil 61 to the required size. Next is the shaping of the outer diameter of the motor coil 61. The positioning block 5 of the motor coil shaping fixture has multiple rows of parallel second limiting holes 51. According to the size requirements of the motor coil 61, select the appropriate position of the second limiting hole 51, and then use a wooden hammer to tap the positioning block 5 located on the outside of the motor coil 61 until the first limiting hole 21 on the pressure plate 2 can be aligned with the corresponding second limiting hole 51 on the positioning block 5, and the positioning pin 1 can be inserted into the corresponding second limiting hole 51 on the positioning block 5. After adjusting the position of each positioning block 5 on the outside of the motor coil 61 in sequence, the shape of the motor coil 61 that meets the size requirements can be obtained.

[0049] The present invention has been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the motor coil shaping fixture of the present invention. The motor coil shaping fixture of the present invention adjusts the height of the motor coil 61 through the pressure plate 2 and adjusts the radial dimension of the motor coil 61 through the positioning block 5, avoiding potential damage to the enameled wire during the shaping process and preventing insulation withstand voltage failure due to damage to the enameled wire. Furthermore, the motor coil shaping fixture of the present invention allows for flexible sample production. It adjusts the height of the motor coil 61 during shaping through the shim 3 and adjusts the radial dimension of the motor coil 61 during shaping through different second limiting holes 51 on the positioning block 5, thereby meeting the diverse needs of motor design. This fixture is not only suitable for three-phase asynchronous motors but also widely applicable to motors requiring manual unwinding and shaping, especially non-standard and high slot fill factor motors. Using the motor coil shaping fixture of the present invention can improve the product yield. In addition, the motor coil shaping fixture of this utility model is simple to operate and easy to implement quickly. Especially for motor solutions with difficult shaping, it can reduce the manual difficulty of coil shaping during the prototype production process, thereby reducing the prototype production time, while ensuring the finished product qualification rate of the prototype, and effectively evaluating the feasibility of mass production process, which has practical reference significance for the subsequent mass production of motors.

[0050] Of course, the above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model and should be protected by the present utility model.

Claims

1. A motor coil shaping fixture, characterized in that, Includes positioning posts, pressure plates, positioning blocks, and positioning pins; The positioning post consists of a positioning part, an enlarged hole part, and a sliding part; The positioning part, the enlarged hole part, and the sliding part are arranged and connected sequentially from bottom to top. The positioning part is used to be inserted into the stator core, the enlarged hole part is used to fit against the inner side of the motor coil, and the sliding part is slidably engaged with the pressure plate. The pressure plate is located above the motor coil, and a first limiting hole is provided on the pressure plate; The positioning block is located on the outside of the motor coil. There are several positioning blocks, and each positioning block has at least one row of second limiting holes. The first limiting hole and the second limiting hole can be connected by a positioning pin.

2. The motor coil shaping fixture according to claim 1, characterized in that, A gasket is fitted onto the sliding part, and the gasket is located between the enlarged hole part and the pressure plate.

3. The motor coil shaping fixture according to claim 2, characterized in that, The pressure plate, gasket, positioning post, and positioning block are made of nylon material.

4. The motor coil shaping fixture according to claim 2, characterized in that, The gaskets are configured in multiple units.

5. The motor coil shaping fixture according to claim 1, characterized in that, The positioning blocks are arranged at equal intervals along the outer circumference of the motor coil.

6. The motor coil shaping fixture according to claim 1 or 5, characterized in that, Each positioning block has at least two rows of second limiting holes along the radial direction.

7. The motor coil shaping fixture according to claim 1, characterized in that, The enlarged section is truncated cone-shaped.

8. The motor coil shaping fixture according to claim 1, characterized in that, The positioning block is arc-shaped.

9. The motor coil shaping fixture according to claim 1, characterized in that, The first limiting hole is arranged along the edge of the pressure plate.

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