Production process of assembled disc motor stator

Abstract

The present application relates to motor processing technical field, especially a kind of production process and processing piece of assembled disc motor stator, and process steps are as follows: using winding punching method processes stator core, and reserving connecting portion in the lower part of stator core, and slot extends to the upper part of connecting portion;After stator core, coil, insulation framework and slot sign are assembled, they are loaded into shell, and the connecting portion reserved in the lower part of stator core is located in accommodating cavity, and the bottom of insulation framework is located on the step surface of limiting portion;Using potting material, the stator after assembly is fixed into shell by potting;The accommodating cavity of shell bottom and the connecting portion of stator located in accommodating cavity are cut off by using turning processing.The stator core in the present application is positioned by screw and positioning hole on shell and is fixed by potting and solidification, then turning processing is carried out, production can be realized, it is simple to operate, process flow is simplified, production cost of product is reduced, the whole stator core is positioned and installed with shell, and positioning precision is high.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a manufacturing process for an assembled disc motor stator. Background Technology

[0002] Currently, mass-produced disc motors on the market are mainly of single stator single rotor, double stator single rotor, and double rotor single stator types. The double rotor single stator structure has three stator configurations, among which the assembled disc motor stator structure has significant advantages over the previous two: The assembled disc motor stator structure eliminates the iron core at the top of the motor. Due to the reduction in the amount of iron core material used, iron loss is greatly reduced, motor efficiency is improved, motor weight is greatly reduced, and torque is increased by more than 30% for the same weight.

[0003] However, this structure presents many problems in production. Firstly, the split iron core is difficult to process and cannot be mass-produced through stamping and stacking processes. Although it can be produced by cutting after stacking through wire cutting, the production cost is very high and it cannot be mass-produced.

[0004] Secondly, after the iron core and coil are processed, the installation and positioning are also very troublesome and difficult to position accurately. If the positioning is off, it will affect the performance of the motor. Only in the laboratory sample production can a lot of tooling fixtures be used for positioning, and sample production can be achieved, but it is not possible to carry out mass production in practice. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a manufacturing process for assembled disc motor stators that enables mass production, has low cost, high positioning accuracy, and produces motors with excellent performance.

[0006] To achieve the above objectives, the first technical solution of the present invention is: a modular disc motor stator machining part, including a housing, wherein the bottom of the housing is provided with a receiving cavity, and the outer periphery of the receiving cavity is provided with a limiting part.

[0007] In the above technical solution, the limiting part is an annular step formed by folding the inner wall of the housing inward.

[0008] The second technical solution of the present invention is: a manufacturing process for an assembled disc motor stator, including the above-mentioned processed parts, and the steps are as follows: S1, the stator is processed by the winding and punching method, and a connecting part is reserved at the lower part of the stator, and the punching groove extends to the upper part of the connecting part; S2, after assembling the stator, coil, insulating frame and slot, install them into the housing, with the pre-reserved connection part at the bottom of the stator located in the receiving cavity, and the bottom of the insulating frame located on the stepped surface of the limiting part; S3 uses potting compound to pot and fix the assembled stator, coil, insulating frame and slot to the housing; S4, use a lathe to cut off the receiving cavity at the bottom of the housing and the connecting part of the stator located in the receiving cavity.

[0009] In the above technical solution, the winding and punching method steps are as follows: S'1 fixes a silicon steel strip of a certain width onto a rotatable material support mechanism for feeding; S'2 The rolled silicon steel strip is leveled by a leveling mechanism; S'3 uses a punch press to punch grooves into the leveled silicon steel strip; S'4 winds the stator core on the coiling mechanism according to the pre-set number of slots.

[0010] In the above technical solution, the stator core, coil, insulating frame and slot are fixedly connected to the housing by fixing bolts, and the fixing bolts pass through the receiving cavity and are fixed to the connecting part of the stator core.

[0011] In the above technical solution, the bottom radius of the insulating skeleton is larger than the radius of the limiting part.

[0012] In the above technical solution, the bottom outer periphery of the insulating frame is provided with a retaining edge, and the radius of the retaining edge is larger than the radius of the limiting part.

[0013] In the above technical solution, the stator core is composed of multiple core units, the skeleton unit of the insulating frame is fitted on the corresponding core unit, the coil is wound on the outside of the skeleton unit, and the slot is inserted into each core unit.

[0014] In summary, the advantages of the technical solution of this invention compared with traditional technical means are as follows: This invention uses the insulating skeleton and housing of the processed parts for positioning. After potting, the iron core is fixed by the potting material. The motor iron core does not need to be fixed by other tooling fixtures. The processing can be completed by machining the receiving cavity and the connecting part of the stator located in the receiving cavity. The operation is simple, the process is simplified, and the production cost of the product is greatly reduced. At the same time, since the iron core is initially integrated, the iron core is positioned and installed with the housing as a whole, and the positioning accuracy is high. Attached Figure Description

[0015] The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention with the casing removed; Figure 2 This is a schematic diagram of the stator core processing in this invention; Figure 3This is an exploded view of the stator in this invention; Figure 4 This is a schematic diagram of the installation of the stator and the housing in this invention; Figure 5 This is a schematic diagram of the stator mounted on the housing in this invention; Figure 6 for Figure 5 A cross-sectional view; Figure 7 This is a schematic diagram of the processed stator mounted on the machine housing. Figure 8 for Figure 7 A cross-sectional view; The following are the designations: housing 100; receiving cavity 110; limiting part 120; fixing bolt 130; insulating frame 200; side guard 210; frame unit 220; stator core 300; connecting part 310; punching groove 320; core unit 330; coil 400; slot label 500; potting material 600. Detailed Implementation

[0017] Based on the preferred embodiments of the present invention, and through the following description, those skilled in the art can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

[0018] The invention will be further described with reference to the following figures: Example 1: As Figures 1-8 As shown, a modular disc motor stator machining part includes a housing 100, the bottom of the housing 100 is provided with a receiving cavity 110, and the outer periphery of the receiving cavity 110 is provided with a limiting part 120.

[0019] like Figure 4 As shown, the limiting part 120 is an annular step formed by folding the inner wall of the housing 100 inward.

[0020] Example 2: A manufacturing process for an assembled disc motor stator, including the processed parts from Example 1, with the following steps: S1, the stator core 300 is processed by a winding and punching method, and a connecting part 310 is reserved at the lower part of the stator core 300, and the punching groove 320 extends to the upper part of the connecting part; S2, after assembling the stator core 300, coil 400, insulating frame 200 and slot 500, they are installed into the housing 100, and the pre-reserved connecting part 310 at the lower part of the stator core 300 is located in the receiving cavity 110, and the bottom of the insulating frame 200 is located on the stepped surface of the limiting part 120. S3, using potting compound, the assembled stator core 300, coil 400, insulating frame 200 and slot 500 are potted and fixed into the housing 100; S4, using a lathe to cut away the receiving cavity at the bottom of the housing and the connecting part 310 of the stator core 300 located in the receiving cavity.

[0021] like Figure 2 As shown, the winding and punching method comprises the following steps: S'1 fixes a silicon steel strip of a certain width onto a rotatable material support mechanism for feeding; S'2 The rolled silicon steel strip is leveled by a leveling mechanism; S'3 uses a punch press to punch grooves into the leveled silicon steel strip; S'4 winds the stator core on the coiling mechanism according to the pre-set number of slots.

[0022] like Figure 4 As shown, the stator core 300, coil 400, insulating frame 200 and slot 500 are fixedly connected to the housing 100 by fixing bolts 130. The fixing bolts 130 pass through the receiving cavity 110 and are fixed to the connecting part 310 of the stator core 300. Before processing, the fixing bolts 130 can position the stator core 300. After processing, the fixing bolts 130 are cut off together with the connecting part 310 without the need for additional processing measures.

[0023] like Figure 3 , 4 As shown in Figure 5, the bottom radius of the insulating frame 200 is greater than the radius of the limiting part 120. Specifically, the bottom outer periphery of the insulating frame 200 is provided with a retaining edge 210, and the radius of the retaining edge 210 is greater than the radius of the limiting part 120.

[0024] like Figure 1 , 2 As shown in Figure 3, the stator core 300 is composed of multiple core units 330. The skeleton unit 220 of the insulating skeleton 200 is fitted onto the corresponding core unit 330. The coil 400 is wound around the outside of the skeleton unit 220. Each core unit 330 is fitted with a slot 500.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A manufacturing process for an assembled disc motor stator, characterized in that: The stator machining parts used in the production process include a housing (100), the bottom of which is provided with a receiving cavity (110), and the outer periphery of the receiving cavity (110) is provided with a limiting part (120), the limiting part (120) being an annular step formed by folding the inner wall of the housing (100) inward. The specific steps of the production process are as follows: S1, the stator core (300) is processed by a winding punching method, and a connecting part (310) is reserved at the lower part of the stator core (300), and the punching groove (320) extends to the upper part of the connecting part (310); S2, the stator core (300), coil (400), insulating frame (200) and slot (500) are assembled and installed into the housing (100), and the connecting part (310) reserved at the lower part of the stator core (300) is located in the receiving cavity (110), the bottom of the insulating frame (200) abuts against the limiting part (120), the bottom radius of the insulating frame (200) is larger than the radius of the limiting part (120), and the bottom outer periphery of the insulating frame (200) is provided with a retaining edge (210), the radius of the retaining edge (210) is larger than the radius of the limiting part (120); S3, using potting compound, the assembled stator core (300), coil (400), insulating frame (200) and slot (500) are potted and fixed into the housing (100); S4, using a lathe to cut off the receiving cavity (110) at the bottom of the housing (100) and the connecting part (310) of the stator core (300) located in the receiving cavity (110).

2. The assembly-type disc motor stator manufacturing process according to claim 1, characterized in that: The winding and punching method involves the following steps: S'1 fixes a silicon steel strip of a certain width onto a rotatable material support mechanism for feeding; S'2 The rolled silicon steel strip is leveled by a leveling mechanism; S'3 uses a punch press to punch grooves into the leveled silicon steel strip; S'4 winds the stator core on the coiling mechanism according to the pre-set number of slots.

3. The assembly-type disc motor stator manufacturing process according to claim 1, characterized in that: The stator core (300), coil (400), insulating frame (200) and slot (500) are fixedly connected to the housing (100) by fixing bolts (130), which pass through the receiving cavity (110) and are fixed to the connecting part (310) of the stator core (300).

4. The assembly-type disc motor stator manufacturing process according to claim 1, characterized in that: The stator core (300) is composed of multiple core units (330). The skeleton unit (220) of the insulating skeleton (200) is fitted on the corresponding core unit (330). The coil (400) is wound around the outside of the skeleton unit (220). Each core unit (330) is fitted with the slot (500).

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