Shrink jacket clamping tool for casing and stator

Abstract

The utility model belongs to the technical field of motor assembly, and particularly relates to a casing and stator shrinkage fit clamping tool which comprises a bottom plate, a base plate arranged on the bottom plate, a positioning ring arranged on the periphery of the base plate, a positioning seat arranged on the upper end face of the base plate, a positioning pressing plate arranged on the upper end face of the positioning seat, and a plurality of mounting holes formed in the side wall of the positioning pressing plate. A sliding block is movably arranged in the installation hole, an elastic piece is arranged on the outer side of the sliding block in a sleeved mode, a first inclined face is formed on the inner side of the sliding block, a push block is arranged on the inner circumference of the positioning pressing plate, and a second inclined face matched with the first inclined face is formed on the outer circumference of the push block. The pushing block can be driven to move up and down through the power source, then the sliding block is pushed to move, the outer end of the sliding block abuts against the inner circumference of the stator coil to support the inner diameter of the stator coil and centralize the coil, a machine shell can be conveniently pressed on the outer circumference of the stator coil subsequently, operation is easy, and automatic production can be achieved conveniently.

Description

Technical Field

[0001] This utility model relates to the field of motor assembly technology, and specifically to a heat-shrink clamping fixture for the housing and stator. Background Technology

[0002] In the motor manufacturing industry, the hot fitting process is a common method for assembling stator cores and housings. The hot fitting process involves first heating the housing, which causes the housing to deform and increase its inner diameter, forming a clearance fit with the stator. As the housing temperature decreases, the clearance fit changes to an interference fit, thus allowing the housing to be firmly fitted onto the outer wall of the stator core.

[0003] For example, Chinese Utility Model Patent No. 2024202048381 discloses a heat fitting fixture for a housing and a stator, including a pressing table, a base plate on the pressing table, a housing mounting seat on the upper surface of the base plate, an annular abutment first formed on the upper outer periphery of the housing mounting seat, a stator mounting seat inside the housing mounting seat, an annular abutment second formed on the upper outer periphery of the stator mounting seat, and an inner support member for supporting the inner periphery of the stator inside the stator mounting seat.

[0004] When the stator aperture changes, the size of the support bar needs to be changed to adapt to stators of different sizes. This operation is complicated and not conducive to automated processing. Therefore, the structure needs further improvement. Utility Model Content

[0005] The purpose of this invention is to provide a heat-shrink clamping fixture for the housing and stator, which solves the problem of complex operation by using a slider.

[0006] The purpose of this utility model is achieved as follows: a heat-shrink clamping fixture for a housing and a stator includes a base plate, a pad on the base plate, a positioning ring on the outer periphery of the pad, a positioning seat on the upper end face of the pad, a positioning pressure plate on the upper end face of the positioning seat, a plurality of mounting holes on the side wall of the positioning pressure plate, a slider movably disposed in the mounting holes, an elastic element sleeved on the outer side of the slider, a first inclined surface formed on the inner side of the slider, a push block disposed on the inner periphery of the positioning pressure plate, a second inclined surface formed on the outer periphery of the push block that cooperates with the first inclined surface, and a power source connected to the lower end of the push block for driving its movement.

[0007] Preferably, the outer side of the slider is formed with a groove.

[0008] Preferably, the outer periphery of the positioning plate is formed with a second groove.

[0009] Preferably, the outer periphery of the positioning seat is provided with a stator positioning three-jaw seat, and the stator positioning three-jaw seat is provided with three positioning pins respectively.

[0010] Preferably, a cover is installed on the lower outer periphery of the base plate, and a tooling base is provided at the lower end of the cover.

[0011] Preferably, an urethane column is provided between the base plate and the tooling base.

[0012] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0013] This invention utilizes a slider design, which allows the power source to drive the push block to move up and down during the actual assembly process. This, in turn, moves the slider so that its outer end abuts against the inner circumference of the stator coil. This supports the inner diameter and aligns the coil, facilitating the subsequent pressing of the housing onto the outer circumference of the stator coil. Depending on the inner diameter of the stator coil, the power source can control the position of the push block, thereby controlling the distance the slider extends. This design is suitable for assembling stator coils with different inner diameters. The operation is simple and facilitates automated production. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0016] Figure 3 This is a schematic diagram of the exploded structure of the part of this utility model.

[0017] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0018] Reference numerals: 1-Base plate; 2-Push plate; 3-Positioning ring; 4-Positioning seat; 5-Positioning pressure plate;

[0019] 6-Mounting hole; 7-Slider; 9-Angle 1; 10-Push block; 11-Angle 2; 12-Power source; 13-Groove 1; 14-Groove 2; 15-Stator positioning three-jaw seat; 16-Positioning column; 17-Cover; 18-Tooling base; 19-Uri-rubber column. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-4As shown, a heat-shrink clamping fixture for a housing and a stator includes a base plate 1, a pad 2 on the base plate 1, a positioning ring 3 on the outer periphery of the pad 2, a positioning seat 4 on the upper end face of the pad 2, a positioning pressure plate 5 on the upper end face of the positioning seat 4, and several mounting holes 6 on the side wall of the positioning pressure plate 5. A slider 7 is movably mounted in the mounting holes 6, and an elastic element, which can be a tension spring, is sleeved on the outer side of the slider 7. Two tension springs are used, connected end to end, and sleeved on the slider 7 and the positioning pressure plate 5. The disassembly and assembly structure is simple and low in cost. When the power source 12 drives the push block 10 to move upward, the tension spring will push the slider 7 to achieve automatic reset. The inner side of the slider 7 is formed with a first inclined surface 9. The inner circumference of the positioning pressure plate 5 is provided with a push block 10. The outer circumference of the push block 10 is formed with a second inclined surface 11 that cooperates with the first inclined surface 9. The lower end of the push block 10 is connected to the power source 12 for driving its movement. When the power source 12 drives the push block to move downward, it will push the slider 7 to move outward through the first inclined surface 9 and the second inclined surface 11.

[0022] This utility model, through the design of the slider, enables the power source 12 to drive the push block 10 to move up and down during the actual assembly process, thereby pushing the slider to move so that its outer end abuts against the inner circumference of the stator coil, which is used to support its inner diameter and straighten the coil, so as to facilitate the subsequent pressing of the housing onto the outer circumference of the stator coil. Depending on the inner diameter of the stator coil, the position of the push block 10 can be controlled by the power source, thereby controlling the distance of the slider extension, so as to be suitable for the assembly of stator coils with different inner diameters. The operation is simple and can be used to realize automated production.

[0023] The outer side of the slider 7 is formed with a groove 13, and the tension spring is disposed in the groove 13, which can restrict the installation position of the tension spring and prevent it from falling off the outer periphery of the slider 7.

[0024] The outer periphery of the positioning plate 5 is formed with a second groove 14. The second groove 14 and the first groove 13 are at the same horizontal height. The tension spring is set in the first groove 13, which can further restrict the installation position of the tension spring and prevent it from falling off the outer periphery of the positioning plate 5.

[0025] The outer periphery of the positioning seat 4 is provided with a stator positioning three-jaw seat 15, and three positioning posts 16 are respectively provided on the stator positioning three-jaw seat 15 for positioning the installation position of the stator coil to facilitate subsequent pressing work.

[0026] A cover 17 is installed on the lower outer periphery of the base plate 1, and a tooling base 18 is provided at the lower end of the cover 17.

[0027] A polyurethane column 19 is provided between the base plate 1 and the tooling base 18. It has good strength, small compression deformation, and can play a role in buffering and shock absorption.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heat-shrink clamping fixture for a housing and a stator, characterized in that, The device includes a base plate (1), a pad (2) on the base plate (1), a positioning ring (3) on the outer periphery of the pad (2), a positioning seat (4) on the upper end face of the pad (2), a positioning pressure plate (5) on the upper end face of the positioning seat (4), a plurality of mounting holes (6) on the side wall of the positioning pressure plate (5), a slider (7) movably disposed in the mounting holes (6), an elastic element sleeved on the outer side of the slider (7), a first inclined surface (9) formed on the inner side of the slider (7), a push block (10) on the inner periphery of the positioning pressure plate (5), a second inclined surface (11) formed on the outer periphery of the push block (10) to cooperate with the first inclined surface (9), and a power source (12) for driving its movement connected to the lower end of the push block (10).

2. The heat-shrink clamping fixture for the housing and stator according to claim 1, characterized in that: The outer side of the slider (7) is formed with a groove (13).

3. The heat-shrink clamping fixture for the housing and stator according to claim 1 or 2, characterized in that: The outer periphery of the positioning plate (5) is formed with groove two (14).

4. The heat-shrink clamping fixture for the housing and stator according to claim 1, characterized in that: The outer periphery of the positioning seat (4) is provided with a stator positioning three-jaw seat (15), and three positioning pins (16) are respectively provided on the stator positioning three-jaw seat (15).

5. The heat-shrink clamping fixture for the housing and stator according to claim 1, characterized in that: A cover (17) is installed on the lower outer periphery of the base plate (1), and a tooling base (18) is provided at the lower end of the cover (17).

6. The heat-shrink clamping fixture for the housing and stator according to claim 5, characterized in that: An urethane column (19) is provided between the base plate (1) and the tooling base (18).

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