Self-centering clamp for machining motor shell

Abstract

The self-centering clamp comprises a base and an operation table arranged above the base, an open hole is formed in the middle of the operation table, a centering clamping assembly is arranged to be matched with the open hole, the centering clamping assembly comprises a push block and a sliding block in sliding contact with the side face of the push block, the block is arranged to be in an L shape, and the push block is arranged on the base. The operation table is provided with a sliding groove matched with the sliding block, and the sliding block is connected with the sliding groove in a sliding mode. The air cylinder drives the pushing block to move up and down, when the pushing block moves upwards, the sliding block is pushed to slide towards the outer side of the operation table through the inclined face, at the moment, the inner wall of the motor shell can be supported and fixed, the effect of simultaneously driving the four sets of sliding blocks to move through the single air cylinder is achieved, and the manufacturing cost is reduced; and meanwhile, the four sets of sliding blocks can be effectively controlled to slide at the same time, and the motor shell can be effectively fixed to a machining center.

Description

Technical Field

[0001] The utility model relates to the technical field of motor processing, in particular to a self-centering clamp for processing a motor shell. Background Art

[0002] The motor housing is part of the motor. In the actual production process, it needs to go through a variety of processing procedures. When processing some motor housings, the outer wall of the housing is clamped. However, when performing processes such as spraying, the clamped outer wall will block the spraying area.

[0003] The utility model patent with the existing patent publication number CN216150170U discloses a clamping fixture for processing a motor housing, including a base and a clamping assembly. The base has a plurality of slideways on its top, and the plurality of slideways diverge from the center of the base to the outer edge. The clamping assembly includes a telescopic driving component arranged in the slideway, a slider located in the slideway and connected to the telescopic end of the telescopic driving component, and a pressing block installed on the slider. The clamping fixture for processing the motor housing drives the slider to slide in the slideway through the telescopic driving component, thereby driving the pressing block to move with the slider. When clamping the inside of the motor housing, the convex surface of the arc is fitted and clamped with the motor housing, and when clamping the outer wall of the motor housing, the concave surface of the arc is fitted and clamped with the outer wall of the motor housing, that is, the inner wall of the motor housing can be clamped as well as the outer wall of the motor housing, without the need for multiple clamps to be used in combination, thereby reducing the processing cost of the motor housing.

[0004] After analysis, it was found that during the process of clamping the motor housing, the clamp used four sets of driving components to drive the pressure block to move. The four sets of driving components need to be started at the same time during the actual clamping process and drive the pressure block to move the same distance, otherwise it may cause clamping deviation. At the same time, the four sets of driving components also greatly increase the manufacturing cost of the clamp. Utility Model Content

[0005] The utility model aims to provide a self-centering fixture for machining a motor housing, so as to solve the problems in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A self-centering fixture for machining a motor housing comprises a base and an operating table arranged above the base, wherein an opening is opened in the middle of the operating table, and a centering clamping assembly is arranged in conjunction with the opening, wherein the centering clamping assembly comprises a push block and a slider in sliding contact with the side of the push block.

[0008] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0009] In an optional solution: the block is arranged in an L-shape, the operating table is provided with a sliding groove in cooperation with the sliding block, and the sliding block is slidably connected to the sliding groove.

[0010] In an optional solution: a cylinder is arranged in the middle of the upper surface of the base, and the output end of the cylinder is connected to the push block.

[0011] In an optional solution: a groove is provided inside the sliding block at one end close to the sliding slot, a return spring is provided inside the groove, and the return spring is connected to the sliding slot at one end away from the groove.

[0012] In an optional solution: the sliding blocks are provided in four groups, the upper ends of the sliding blocks are provided with clamping blocks, and the clamping blocks are detachably connected to the sliding blocks by bolts.

[0013] In an optional solution: the upper part of the push block is a frustum, and the lower part is a cylinder.

[0014] In an optional solution: a plurality of groups of reinforcing ribs are provided on the lower surface of the operating table.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The utility model drives a push block to move up and down by a cylinder. When the push block moves upward, it pushes the slide block to slide toward the outside of the operating table through the inclined surface. At this time, the inner wall of the motor housing can be supported and fixed, and the effect of driving four groups of slide blocks to move at the same time by a single cylinder is achieved, thereby reducing the manufacturing cost and effectively controlling the four groups of slide blocks to slide at the same time, so that the motor housing can be effectively fixed on the machining center. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the structure of one side of the utility model.

[0019] Figure 3 It is a cross-sectional view of the utility model.

[0020] Figure 4 This is a schematic diagram of the slider structure of the utility model.

[0021] Figure 5 It is a schematic diagram of the structure of the operating table of the utility model.

[0022] Notes on the figure numbers: 1. base; 101. reinforcing rib; 2. operating table; 3. centering clamping assembly; 301. push block; 302. slider; 303. clamping block; 304. groove; 305. return spring; 306. slide groove; 307. cylinder. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] In one embodiment, Figure 1-Figure 5 As shown, a self-centering fixture for processing a motor housing comprises a base 1 and an operating table 2 arranged above the base 1. An opening is opened in the middle of the operating table 2, and a centering clamping assembly 3 is arranged in conjunction with the opening. The centering clamping assembly 3 comprises a push block 301 and a slider 302 that is in sliding contact with the side of the push block 301. The push block 301 pushes the slider 302 to move to complete the clamping of the inner wall of the motor housing. A plurality of groups of reinforcing ribs 101 are arranged on the lower surface of the operating table 2 to improve the stability of the operating table 2.

[0025] like Figure 1-5 As shown, the slider 302 is provided with four groups and is L-shaped. A clamping block 303 is provided on the upper end of the slider 302. The clamping block 303 is detachably connected to the slider 302 by bolts. The motor housing may have different shapes. The detachable clamping block 303 is convenient for replacing the clamping block 303 for motor housings with different shapes. The operating table 2 is provided with a slide groove 306 to cooperate with the slider 302. It should be noted that the slide groove 306 should be provided with a limited position structure to cooperate with the slider 302 to improve the sliding stability of the slider 302 and prevent the slider 302 from falling off. The slider 302 is slidably connected to the slide groove 306. A cylinder 307 is provided in the middle of the upper surface of the base 1. The output end of the cylinder 307 is connected to the push block 301. The upper part of the push block 301 is a frustum, and the lower part is a cylindrical setting. It should be noted that a notch is provided on the bottom side of the slider 302, and the slider is slidably connected to the frustum part of the push block 301 through the notch. When the push block 301 moves upward, the slider 302 can be pushed to move through the inclined surface of the frustum. A groove 304 is provided inside the slider 302 at one end close to the slide groove 306, and a return spring 305 is provided inside the groove 304. The return spring 305 is connected to the slide groove 306 at one end away from the groove 304. When the slider 302 slides toward the outside of the operating table 2, the return spring 305 will be compressed. When the push block 301 moves downward, the slider 302 loses its thrust, the return spring 305 relaxes, and the slider 302 is pushed open.

[0026] The above embodiment discloses a self-centering fixture for processing a motor casing, wherein, when the motor casing needs to be processed, four groups of clamping blocks 303 are placed inside the motor casing so that the clamping blocks 303 are all inside the motor casing, and then the cylinder 307 is started so that the cylinder 307 pushes the push block 301 to move upward, thereby causing the four groups of slide blocks 302 to slide toward the outside of the operating table 2 at the same time, so that the clamping blocks 303 contact and finally support the inner wall of the motor casing to complete the clamping.

[0027] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A self-centering fixture for machining a motor housing, comprising a base (1) and an operating table (2) arranged above the base (1), characterized in that: An opening is provided in the middle of the operating table (2), and a centering clamping assembly (3) is provided in coordination with the opening. The centering clamping assembly (3) comprises a push block (301) slidably connected to the opening and a sliding block (302) slidably contacting the side of the push block (301).

2. The self-centering fixture for machining a motor housing according to claim 1, characterized in that: The sliding block (302) is arranged in an L shape, the operating table (2) is provided with a sliding groove (306) in cooperation with the sliding block (302), and the sliding block (302) is slidably connected to the sliding groove (306).

3. The self-centering fixture for machining a motor housing according to claim 1, characterized in that: A cylinder (307) is provided in the middle of the upper surface of the base (1), and an output end of the cylinder (307) is connected to the push block (301).

4. The self-centering fixture for machining a motor housing according to claim 2, characterized in that: A groove (304) is provided inside the sliding block (302) at one end close to the sliding groove (306), a return spring (305) is provided inside the groove (304), and the return spring (305) is connected to the sliding groove (306) at one end away from the groove (304).

5. The self-centering fixture for machining a motor housing according to claim 2, characterized in that: The sliders (302) are provided in four groups. A clamping block (303) is provided at the upper end of the slider (302). The clamping block (303) is detachably connected to the slider (302) via bolts.

6. The self-centering fixture for machining a motor housing according to claim 1, characterized in that: The push block (301) has a truncated cone at the upper portion and a cylindrical configuration at the lower portion.

7. The self-centering fixture for machining a motor housing according to claim 1, characterized in that: The lower surface of the operating table (2) is provided with a plurality of groups of reinforcing ribs (101).

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