Motor stator core hot jacket auxiliary tool

Abstract

The utility model belongs to the technical field of motor production, and particularly relates to an auxiliary tool for hot jacket of a motor stator core. The inner supporting chuck and the limiting boss are fixed to one side of the base and coaxially arranged, the flange is fixedly arranged on the other side of the base, the inner supporting chuck and the limiting boss are both perpendicular to the side face of the base, the limiting boss is located outside the inner supporting chuck, and a cavity is formed between the limiting boss and the inner supporting chuck; the inner supporting chuck is composed of a plurality of inner supporting clamping jaws which are evenly distributed in the circumferential direction, and threaded holes are formed in the centers of the inner supporting clamping jaws. According to the utility model, the use requirements of the motor during hot jacket assembly and other processing technologies can be effectively met, the structure is simple, the production time can be effectively shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor production, and in particular relates to an auxiliary tool for shrink-fitting a motor stator core. Background Art

[0002] In the field of motor manufacturing, the assembly construction of the motor's stator core and casing generally adopts the shrink fitting process. That is, the casing is first heated so that the casing deforms and the inner diameter becomes larger after heating, so that it forms a clearance fit with the outer wall of the stator core for easy assembly. Then, as the casing temperature drops, the clearance fit becomes an interference fit, so that the casing is firmly fitted on the outer wall of the stator core.

[0003] However, when performing the shrink fitting process on the stator core and the casing, the existing tooling only takes into account the requirements of the shrink fitting process, that is, ensuring the coaxiality of the stator core and the casing. For other processes after assembly, such as casing stop processing, other tooling is required to complete, which not only increases work costs and wastes working time, but also causes secondary clamping to affect processing quality. Utility Model Content

[0004] Based on the above technical problems, the purpose of the present invention is to provide a shrink fit auxiliary tooling that can not only meet the process requirements of shrink fit assembly of motor stator core, but also meet the clamping requirements of subsequent motor processing technology.

[0005] The technical solution adopted by the utility model is: an auxiliary tool for shrink-fitting of a motor stator core, comprising: a base, an inner support chuck and a limiting boss fixed to one side of the base and coaxially arranged, and a flange fixed to the other side of the base, wherein the inner support chuck and the limiting boss are both perpendicular to the side of the base, the limiting boss is located outside the inner support chuck, and a cavity is formed between the two, the inner support chuck is composed of a plurality of inner support jaws uniformly distributed in the circumferential direction, and the centers of the plurality of inner support jaws are provided with threaded holes;

[0006] Furthermore, the inner support chuck also includes a chuck base fixed to one side of the base, an inner threaded hole is provided at the end of the chuck base, and an outer threaded protrusion matched with the inner threaded hole is provided at one end of the plurality of inner support jaws;

[0007] Furthermore, the number of the multiple inner supporting jaws is four.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] 1. The utility model can effectively meet the use requirements of the motor during shrink fit assembly and other processing techniques. Its simple structure can effectively shorten the production time and improve work efficiency.

[0010] 2. The cavity between the limiting boss and the inner support chuck can be used to avoid the interference of the stator core coil on the shrink fitting process;

[0011] 3. After the shrink fitting process is completed, the motor and the auxiliary tooling can be fixed by using the internal support function of the internal support chuck, avoiding the influence of secondary clamping on the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 An assembly drawing for the shrink-fit process using the utility model;

[0014] Figure 3 This is a schematic diagram of the structure after the utility model is used for heat-shrink coating construction;

[0015] Figure 4 This is a schematic structural diagram of the internal support chuck of the utility model;

[0016] In the figure: 1. Base; 2. Internal support chuck; 3. Limiting boss; 4. Flange; 5. Stator core; 6. Casing; 7. Internal support jaws; 8. Chuck base; 9. Screws. DETAILED DESCRIPTION

[0017] The technical solution adopted by the present utility model will be further described below with reference to the accompanying drawings.

[0018] First, if Figure 1 As shown, the utility model provides a motor stator core shrink fitting auxiliary tooling, including: a base 1 and an inner support clamp 2 and a limiting boss 3 coaxially fixed on one side of the base 1, and a flange 4 fixed on the other side of the base 1.

[0019] The inner supporting chuck 2 and the limiting boss 3 are both perpendicular to the side surface of the base 1 , wherein the limiting boss 3 is located outside the inner supporting chuck 2 , and there is a cavity between the two.

[0020] The outer diameter of the inner support chuck 2 is matched with the inner diameter of the stator core 5 to be shrink-fitted, so that the stator core 5 can be sleeved on the inner support chuck 2. The outer diameter of the limiting boss 3 matches the outer diameter of the stator core 5. In this way, when the stator core 5 is sleeved on the inner support chuck 2, the outer wall of the stator core 5 can be stuck on the limiting boss 3. When the stator core 5 and the housing 6 are subjected to the following steps, the stator core 5 and the housing 6 are sleeved on the inner support chuck 2. Figure 2 When the shrink fitting process is used for assembly, the coaxiality of the stator core 5 and the housing 6 can be ensured by the verticality of the inner support chuck 2 and the base 1. At the same time, the stator core 5 and the housing 6 can be limited by the limiting boss 3, that is, the position of the stator core 5 in the housing 6 is limited, and finally the stator core 5 is formed. Figure 3As shown in the assembly structure, the coils of the stator core 5 can be stored in the cavity formed between the limiting boss 3 and the inner support clamp 2, avoiding interference with the shrink fit assembly of the stator core 5 and the housing 6.

[0021] In addition, considering that after completing the shrink fit process of the stator core 5 and the casing 6, it is usually necessary to turn the stop of the casing 6, in order to avoid the use of additional tooling to fix the casing 6 on the lathe, the utility model provides an internal support function for the internal support chuck 2, that is, by changing the outer diameter of the internal support chuck 2, the fit between it and the inner diameter of the stator core 5 is changed from a clearance fit to an interference fit, and then the entire auxiliary tooling is fixed to the casing 6. In this way, when it is necessary to turn the stop of the casing 6, the entire tooling can be fixed to the chuck of the lathe spindle through the flange 4 on the other side of the base 1, and the stop of the casing 6 can be turned.

[0022] Specifically, if Figure 4 As shown, in this embodiment, the inner support chuck 2 is composed of a plurality of inner support jaws 7 uniformly distributed along its axis in the circumferential direction. The plurality of inner support jaws 7 are preferably four, that is, one end of the plurality of inner support jaws 7 is fixed to the base 1, and the plurality of inner support jaws 7 are uniformly distributed in the circumferential direction to form the entire inner support chuck 2. The centers of the plurality of inner support jaws 7 are provided with threaded holes. When the stator core 5 is sleeved on the inner support chuck 2 composed of the plurality of inner support jaws 7, a screw 9 slightly larger than the threaded hole is screwed into the threaded hole in the center of the plurality of inner support jaws 7 to open the plurality of inner support jaws 7, that is, the outer diameter of the inner support chuck 2 is changed so that the inner diameter of the inner support chuck 2 and the inner diameter of the stator core 5 are changed from a clearance fit to an interference fit.

[0023] In addition, as an optimal technical solution, the internal support chuck 2 can also be set to a detachable structure, that is, the end of the internal support chuck 2 close to the base 1 is fixed to the base 1 through the chuck base 8, and an internal threaded hole is provided at the end of the chuck base 8. An external threaded protrusion is provided at the bottom of the internal support chuck 2 composed of multiple internal support jaws 7. The internal support chuck 2 can be fixed to the chuck base 8 through the threaded cooperation between the external threaded protrusion and the internal threaded hole. In this way, when the internal support chuck 2 is damaged due to long-term use, the internal support chuck 2 can be removed separately for replacement.

[0024] The above embodiments merely represent preferred embodiments of the present invention. Although the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that any modifications and improvements made by those skilled in the art without departing from the concept of the present invention are all within the scope of protection of the present invention.

Claims

1. A motor stator core shrink-fit auxiliary tooling, comprising: A base (1) and an inner support chuck (2) and a limiting boss (3) fixed on one side of the base (1) and coaxially arranged, and a flange (4) fixed on the other side of the base (1), the inner support chuck (2) and the limiting boss (3) are both perpendicular to the side of the base (1), the limiting boss (3) is located outside the inner support chuck (2), and there is a cavity between the two. It is characterized in that the inner support chuck (2) is composed of a plurality of inner support jaws (7) evenly distributed along the circumference, and the centers of the plurality of inner support jaws (7) are provided with threaded holes.

2. The motor stator core shrink-fit auxiliary tooling according to claim 1, characterized in that: The inner support chuck (2) further comprises a chuck base (8) fixed to one side of the base (1); an inner threaded hole is provided at the end of the chuck base (8); and an outer threaded protrusion matched with the inner threaded hole is provided at one end of a plurality of inner support jaws (7).

3. The motor stator core shrink-fit auxiliary tooling according to claim 2, characterized in that: The number of the multiple inner supporting clamping claws (7) is four.

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