Stretching positioning equipment for manufacturing motor shell

Abstract

The utility model discloses stretching positioning equipment for manufacturing a motor shell, which comprises a base, a stretching driving mechanism arranged above the base, a central positioning module, a multi-stage positioning mechanism and an elastic compensation component, the multi-stage positioning mechanism and the elastic compensation component are distributed on the base in an annular array, and the base is provided with a guide rail connected with the multi-stage positioning mechanism. And through the multi-dimensional positioning and elastic compensation design, the precision and reliability of stretching machining of the motor shell are remarkably improved. A radial telescopic clamping piece of the center positioning module is matched with a stepped positioning face of the multi-stage positioning mechanism, synchronous and accurate positioning of an inner hole and an end face is achieved, and particularly, due to the adaptive design of a first positioning step face to the thickness of a flange, the problem that deviation is prone to being generated in a traditional single positioning mode is effectively solved. A spiral spring and a damper of the elastic compensation assembly are of a coaxial nested structure, the design of a compensation included angle ranging from 5 degrees to 15 degrees is combined, the tolerance of a workpiece can be compensated in a self-adaptive mode, vibration is buffered, and deformation caused by stress concentration is avoided.

Description

Technical Field

[0001] This utility model relates to the field of processing equipment technology, specifically a stretching and positioning device for manufacturing motor housings. Background Technology

[0002] In the stretch forming process of motor housings, the accuracy and stability of the positioning equipment directly affect product quality. Existing technologies, traditional stretch positioning devices generally suffer from problems such as a single positioning method and insufficient adaptive compensation capability: on the one hand, relying solely on a single positioning structure of center positioning or end face positioning makes it difficult to simultaneously meet the high-precision positioning requirements of the motor housing's inner hole and the flange end face, especially when there are deviations in the housing flange thickness tolerance or end face contour, which can easily lead to housing offset or deformation during stretching; on the other hand, the lack of an effective elastic buffer mechanism means that when vibration occurs during equipment operation or there are slight differences in workpiece dimensions, the rigidly connected positioning components will experience stress concentration, affecting positioning reliability and equipment lifespan. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a stretching and positioning device for manufacturing motor housings, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A stretching and positioning device for manufacturing a motor housing includes a base, a stretching drive mechanism disposed above the base, a central positioning module, a multi-stage positioning mechanism distributed in a ring array on the base, and an elastic compensation component. The base is provided with guide rails connecting the multi-stage positioning mechanisms.

[0006] The stretching drive mechanism includes a vertically arranged hydraulic cylinder and a top plate connected to its piston rod. The center positioning module consists of a positioning mandrel fixed coaxially with the top plate and at least two sets of radially extendable clamping members.

[0007] The multi-stage positioning mechanism includes a positioning block that is slidably connected to the guide rail via a slider. The positioning block has a stepped positioning surface that matches the contour of the motor housing end face. The elastic compensation component includes a helical spring and a damper that are elastically connected at both ends to the end of the clamping member and the positioning block, respectively. The helical spring and the damper are coaxially nested.

[0008] As a further description of the above technical solution, the clamping member includes a connecting rod hinged to the positioning spindle and an arc-shaped clamping plate disposed at the end of the connecting rod, wherein the inner surface of the clamping plate is provided with anti-slip texture.

[0009] As a further description of the above technical solution, the stepped positioning surface includes a first positioning step surface, a second positioning step surface, and a chamfered transition surface, wherein the height of the first positioning step surface matches the thickness of the motor housing flange.

[0010] As a further description of the above technical solution, the base is provided with an auxiliary positioning structure, which includes at least three guide columns disposed on the edge of the base, a linear bearing, and a limiting block disposed on the top of the guide columns. The linear bearing is installed on the top plate and slides with the guide columns.

[0011] As a further description of the above technical solution, the base is provided with a circulating cooling channel at its bottom, and the channel is connected to an external coolant supply system via a quick connector.

[0012] As a further description of the above technical solution, the axis of the elastic compensation component forms a compensation angle of 5°-15° with the radial movement direction of the clamping member.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The stretching and positioning device for manufacturing motor housings according to this utility model has at least one of the following beneficial effects during use:

[0015] Through multi-dimensional positioning and elastic compensation design, the accuracy and reliability of motor housing stretching are significantly improved. The radial telescopic clamping component of the central positioning module, in conjunction with the stepped positioning surface of the multi-stage positioning mechanism, achieves synchronous and precise positioning of the inner hole and end face. In particular, the adaptation design of the first positioning step to the flange thickness effectively solves the offset problem easily caused by traditional single positioning methods. The coaxial nested structure of the helical spring and damper in the elastic compensation component, combined with a 5°-15° compensation angle design, can adaptively compensate for workpiece tolerances and buffer vibrations, avoiding deformation caused by stress concentration. The guide column of the auxiliary positioning structure, in conjunction with the linear bearing, ensures the straightness of the top plate movement, improving equipment stability. The setting of the circulating cooling channel effectively solves the problem of thermal deformation during long-term operation. Actual testing shows that this equipment can reduce the scrap rate of motor housing stretching by 40%, extend equipment life by 30%, and significantly improve production efficiency and product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a stretching and positioning device for manufacturing a motor housing according to the present invention;

[0017] Figure 2 This is a perspective structural diagram of a stretching and positioning device for manufacturing a motor housing according to the present invention.

[0018] Figure 3This is a side view of a stretching and positioning device for manufacturing a motor housing according to the present invention.

[0019] Numbering on the map:

[0020] 1. Base; 101. Auxiliary positioning structure; 102. Linear bearing; 103. Guide column; 104. Circulating cooling channel; 105. Guide rail; 2. Tensioning drive mechanism; 201. Hydraulic cylinder; 202. Top plate; 3. Center positioning module; 301. Positioning mandrel; 302. Clamping component; 4. Multi-stage positioning mechanism; 401. First positioning step; 402. Second positioning step; 5. Elastic compensation component; 501. Damper; 502. Helical spring. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-3 As shown, this utility model provides a stretching and positioning device for manufacturing motor housings, including a base 1, a stretching drive mechanism 2 disposed above the base 1, a central positioning module 3, a multi-level positioning mechanism 4 distributed in a ring array on the base 1, and an elastic compensation component 5. The base 1 is provided with a guide rail 105 connecting the multi-level positioning mechanism 4.

[0023] When using this motor housing to manufacture a stretching and positioning device, the motor housing to be processed is first placed on the base 1. The hydraulic cylinder 201 in the stretching drive mechanism 2 starts to work. The hydraulic cylinder 201 is arranged vertically, and its piston rod drives the top plate 202 to move vertically. The top plate 202 is coaxially fixed with the positioning mandrel 301, so the positioning mandrel 301 will move together with the top plate 202.

[0024] The stretching drive mechanism 2 includes a vertically arranged hydraulic cylinder 201 and a top plate 202 connected to its piston rod. The center positioning module 3 consists of a positioning mandrel 301 coaxially fixed with the top plate 202 and at least two sets of radially extendable clamping members 302.

[0025] The center positioning module 3 has at least two sets of clamping members 302, which are radially extendable. These include a connecting rod hinged to the positioning spindle 301 and an arc-shaped clamping plate at the end of the connecting rod. When the top plate 202 moves the positioning spindle 301 downwards, the connecting rod rotates around its hinge point with the positioning spindle 301, causing the arc-shaped clamping plate to extend radially. The inner surface of the arc-shaped clamping plate has anti-slip textures. When the clamping plate extends radially, the anti-slip textures contact the inner hole of the motor housing, achieving center positioning and initial clamping of the inner hole of the motor housing, ensuring the accurate center position of the motor housing.

[0026] The multi-stage positioning mechanism 4 includes a positioning block that is slidably connected to the guide rail 105 via a slider. The positioning block has a stepped positioning surface that matches the contour of the motor housing end face. The elastic compensation component 5 includes a helical spring 502 and a damper 501 that are elastically connected at both ends to the end of the clamping member 302 and the positioning block, respectively. The helical spring 502 and the damper 501 are coaxially nested.

[0027] While the central positioning module 3 positions the inner hole of the motor housing, the multi-stage positioning mechanism 4 also begins to operate. The multi-stage positioning mechanism 4 includes a positioning block slidably connected to the guide rail 105 on the base 1 via a slider. The positioning block has a stepped positioning surface that matches the contour of the motor housing end face. The two ends of the elastic compensation component 5 are elastically connected to the end of the clamping member 302 and the positioning block, respectively. It consists of a coaxially nested helical spring 502 and a damper 501, and the axis of the elastic compensation component 5 forms a compensation angle of 5°-15° with the radial movement direction of the clamping member 302. When the clamping member 302 extends or retracts radially, a force is applied to the positioning block through the elastic compensation component 5. Under the action of this force, the positioning block moves radially along the guide rail 105 via the slider. Since the stepped positioning surface includes a first positioning step 401, a second positioning step 402 and a chamfered transition surface, the height of the first positioning step 401 matches the thickness of the motor housing flange. As the positioning block moves, the stepped positioning surface will gradually fit against the end face of the motor housing, realizing multi-level positioning of the end face of the motor housing, especially the precise positioning of the flange part.

[0028] Furthermore, the clamping member 302 includes a connecting rod hinged to the positioning spindle 301 and an arc-shaped clamping plate disposed at the end of the connecting rod, wherein the inner surface of the clamping plate is provided with anti-slip texture.

[0029] The design of each component is reasonable. For example, the inner surface of the arc-shaped clamping plate of clamping component 302 is provided with anti-slip texture, which increases the clamping force and prevents the motor housing from sliding during processing. The chamfered transition surface of the stepped positioning surface facilitates the fit between the positioning block and the end face of the motor housing, improving positioning efficiency. The overall structure is compact and the functions are complete, which can effectively improve the production efficiency and product quality of motor housing manufacturing.

[0030] Furthermore, the stepped positioning surface includes a first positioning step surface 401, a second positioning step surface 402, and a chamfered transition surface, and the height of the first positioning step surface 401 matches the thickness of the motor housing flange.

[0031] The center positioning module 3 uses the radially extendable clamping member 302 to center the inner hole of the motor housing. The stepped positioning surface of the multi-stage positioning mechanism 4 matches and positions the end face of the housing. In particular, the first positioning step surface 401 matches the thickness of the motor housing flange, realizing multi-dimensional precise positioning of the inner hole and the end face, ensuring the positional accuracy of the motor housing during the stretching process, thereby improving the processing quality of the motor housing.

[0032] Furthermore, the base 1 is provided with an auxiliary positioning structure 101, which includes at least three guide posts 103 disposed on the edge of the base 1, a linear bearing 102, and a limiting block disposed on the top of the guide posts 103. The linear bearing 102 is installed on the top plate 202 and slides with the guide posts 103.

[0033] The auxiliary positioning structure 101 on the base 1 serves to assist in stabilization. The auxiliary positioning structure 101 includes at least three guide posts 103 disposed at the edge of the base 1, a linear bearing 102, and a limiting block disposed at the top of the guide posts 103. The linear bearing 102 is mounted on the top plate 202 and slides in cooperation with the guide posts 103. During the vertical movement of the top plate 202, the linear bearing 102 slides along the guide posts 103, ensuring the linearity and stability of the top plate 202's movement and preventing deviation. Simultaneously, the limiting block restricts the travel of the top plate 202, preventing excessive movement.

[0034] Furthermore, the base 1 is equipped with a circulating cooling channel 104 at its bottom, which is connected to an external coolant supply system via a quick connector. During the stretching and positioning process, heat may be generated due to friction, etc. The circulating cooling channel 104 at the bottom of the base 1 is connected to the external coolant supply system via a quick connector, and the coolant circulates within the channel to promptly remove the heat generated during equipment operation and maintain the normal operating temperature of the equipment.

[0035] Furthermore, the axis of the elastic compensation component 5 forms a compensation angle of 5°-15° with the radial movement direction of the clamping member 302. The helical spring 502 and the damper 501 of the elastic compensation component 5 are coaxially nested, and their axis forms a certain compensation angle with the radial movement direction of the clamping member 302. When the motor housing has certain processing errors or is affected by vibration during the stretching process, the elastic effect of the helical spring 502 can provide a certain buffer and compensation, while the damper 501 can reduce vibration and impact, enabling the equipment to adaptively adjust the positioning force, ensuring the stability and reliability of positioning, and improving the adaptability of the equipment to different working conditions.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A stretching and positioning device for manufacturing motor housings, characterized in that: It includes a base, a tension drive mechanism disposed above the base, a central positioning module, a multi-level positioning mechanism distributed in a ring array on the base, and an elastic compensation component. The base is provided with guide rails connecting the multi-level positioning mechanisms. The stretching drive mechanism includes a vertically arranged hydraulic cylinder and a top plate connected to its piston rod. The center positioning module consists of a positioning mandrel fixed coaxially with the top plate and at least two sets of radially extendable clamping members. The multi-stage positioning mechanism includes a positioning block that is slidably connected to the guide rail via a slider. The positioning block has a stepped positioning surface that matches the contour of the motor housing end face. The elastic compensation component includes a helical spring and a damper that are elastically connected at both ends to the end of the clamping member and the positioning block, respectively. The helical spring and the damper are coaxially nested.

2. The stretching and positioning equipment for manufacturing a motor housing according to claim 1, characterized in that: The clamping component includes a connecting rod hinged to the positioning spindle and an arc-shaped clamping plate disposed at the end of the connecting rod. The inner surface of the clamping plate is provided with anti-slip texture.

3. The stretching and positioning equipment for manufacturing a motor housing according to claim 1, characterized in that: The stepped positioning surface includes a first positioning step, a second positioning step, and a chamfered transition surface. The height of the first positioning step matches the thickness of the motor housing flange.

4. The stretching and positioning equipment for manufacturing a motor housing according to claim 1, characterized in that: The base is provided with an auxiliary positioning structure, which includes at least three guide columns disposed on the edge of the base, a linear bearing, and a limiting block disposed on the top of the guide columns. The linear bearing is installed on the top plate and slides with the guide columns.

5. The stretching and positioning equipment for manufacturing a motor housing according to claim 1, characterized in that: The base is provided with a circulating cooling channel at its bottom, which is connected to an external coolant supply system via a quick connector.

6. The stretching and positioning equipment for manufacturing a motor housing according to claim 1, characterized in that: The axis of the elastic compensation component forms a compensation angle of 5°-15° with the radial movement direction of the clamping member.

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