Positioning clamp for machining of motor end cover casting

Abstract

The utility model discloses a positioning fixture for motor end cover casting machining, which comprises a bottom plate, positioning structures are symmetrically and movably connected to the top of the bottom plate close to one side corner, and a pressing assembly is slidably connected to the top of the bottom plate far away from the positioning structures and located in the middle of the bottom plate. The mounting holes are formed in the corners of the bottom plate, so that when the bottom plate is mounted, the bottom plate can be mounted and fixed through the mounting holes. Pre-positioning and fixing of the multi-form motor end cover are achieved through the preset positioning structure, dynamic pressing is conducted on the other datum plane of the workpiece in cooperation with the adjustable pressing assembly, a space stable supporting system is constructed based on the three-point positioning principle, and therefore the space position precision and the structure stability of the motor end cover in the machining process are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to foundry application technical field, especially a kind of positioning fixture for motor end cover casting processing. BACKGROUND

[0002] Motor end cover casting is the core structural component of motor, bears the key functions such as supporting bearing, sealing protection, heat dissipation and fixed stator, end cover is matched with rotating shaft through bearing chamber, bears the radial and axial load of rotor, ensures that stator rotor air gap is uniform.

[0003] The existing motor end cover needs to be positioned and fixed in position when casting processing, and the traditional positioning fixture is generally clamped and fixed from outside to inside, and different shapes of special-shaped end cover will appear unstable clamping when being extruded, so as to cause shaking in processing, affect the overall processing quality of end cover, therefore, the utility model provides a kind of positioning fixture for motor end cover casting processing. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of positioning fixture for motor end cover casting processing, and the prepositioning of multi-form motor end cover is realized by prepositioning structure, and the other reference surface of workpiece is implemented dynamic compression in cooperation with adjustable compression assembly, and the space stable support system is constructed based on three-point positioning principle, to ensure the spatial position precision and structural stability of motor end cover in processing process.

[0005] To solve the above technical problems, the utility model adopts one technical scheme: provide a kind of positioning fixture for motor end cover casting processing, including bottom plate, the top of bottom plate is symmetrically movably connected with positioning structure near one side corner, and the position of the top of bottom plate is slidably connected with compression assembly at the position away from positioning structure and located in the middle of bottom plate.

[0006] The utility model is further provided: the corner of bottom plate is all provided with mounting hole.

[0007] Through the above technical scheme, when installing the bottom plate, it can be installed and fixed in position through multiple mounting holes.

[0008] The utility model is further provided: the positioning structure includes positioning column, the bottom of positioning column is fixedly connected with positioning connecting block, the positioning connecting block is screwed in the positioning hole of the top of bottom plate, the outer wall of positioning column is sleeved with positioning plate near the bottom position, the end surface of positioning plate is fixedly connected with multiple positioning lugs, the outer wall of positioning column is screwed with adjusting nut near the top position of positioning plate, and the outer wall of positioning column is clamped and connected with limiting sleeve near the top position.

[0009] By the above technical scheme, the adjusting nut is rotated on the positioning column, so that the abutting positioning plate drives the plurality of positioning protrusions to be pressed and fixed, then the limiting sleeve is sleeved on the top of the positioning column, so that the position of the adjusted adjusting nut is limited and fixed, and rotation shaking in the machining process is prevented.

[0010] The utility model further sets up: the outer wall of positioning column is near top position and is built with embedding groove, the inner wall of limiting sleeve evenly is provided with a plurality of embedded teeth, and is embedded in embedding groove through embedded tooth.

[0011] By the above technical scheme, the limiting sleeve is stably clamped and connected to the top of the positioning column through the embedded teeth, so that clamping and fixing are realized, and the stability in use is improved.

[0012] The utility model further sets up: the top of adjusting nut is near outer wall position and is built with limiting hole, the bottom of limiting sleeve is near outer wall position and is fixedly connected with limiting rod, and limiting rod is inserted in limiting hole.

[0013] By the above technical scheme, the position of the adjusted adjusting nut is limited and fixed by the limiting rod, so that rotation is prevented, and shaking in end cover machining is prevented.

[0014] The utility model further sets up: the pressing assembly includes the slide bar, the end surface of slide bar is connected in the slide groove of the top of bottom plate and is built, the top of slide bar is fixedly connected with connecting barrel, the outer wall of connecting barrel is near bottom position and is sleeved with pressing block, the outer wall of connecting barrel is sleeved with spring, the inner wall of connecting barrel is penetrated and is provided with fixed screw rod, the top of fixed screw rod is fixedly connected with rotating block.

[0015] By the above technical scheme, the rotation of the fixed screw rod is driven by the rotating block, so that the end surface is abutted to the top of the bottom plate, so that the slide bar is positioned and fixed, then the pressing block is lifted, so that the surface of the pre-positioned end cover is pressed and fixed, and the positioning effect of the end cover is realized.

[0016] The utility model further sets up: the end surface bottom of pressing block is fixedly connected with a plurality of protection blocks, and the end surface of spring is abutted to pressing block and rotating block respectively.

[0017] By the above technical scheme, the surface of the pressed end cover is protected by the protection block, so that the surface is prevented from being damaged, and under the abutting action of the spring, the pressing block is stably pressed to the surface of the end cover.

[0018] The utility model has the advantages that:

[0019] The positioning clamp for motor end cover casting machining discloses in the utility model realizes the pre-positioning fixation of the motor end cover of multiple forms through the pre-set positioning structure, cooperates with the adjustable compression assembly to implement the dynamic compression of the other reference surface of the workpiece, constructs the space stable support system based on the three-point positioning principle, so as to ensure the space position precision and structural stability of the motor end cover in the machining process. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure diagram of the positioning clamp for motor end cover casting machining of the utility model;

[0021] Figure 2 It is an explosion view of the positioning clamp for motor end cover casting machining of the utility model;

[0022] Figure 3 It is a structure diagram of the positioning structure in the positioning clamp for motor end cover casting machining of the utility model;

[0023] Figure 4 It is an explosion view of the positioning structure in the positioning clamp for motor end cover casting machining of the utility model;

[0024] Figure 5 It is a structure diagram of the compression assembly in the positioning clamp for motor end cover casting machining of the utility model;

[0025] Figure 6 It is an explosion view of the compression assembly in the positioning clamp for motor end cover casting machining of the utility model.

[0026] In the drawing: 1, bottom plate; 11, mounting hole; 12, sliding groove; 13, positioning hole; 2, positioning structure; 21, positioning column; 211, embedded groove; 22, positioning connecting block; 23, positioning plate; 231, positioning protruding block; 24, adjusting nut; 241, limiting hole; 25, limiting sleeve; 251, embedded tooth; 252, limiting rod; 3, compression assembly; 31, sliding rod; 32, connecting cylinder; 33, pressing block; 331, protection block; 34, spring; 35, fixed screw rod; 36, rotating block. DETAILED DESCRIPTION

[0027] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and features of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is defined more clearly and explicitly.

[0028] For example, Figures 1-4As shown, a positioning clamp for motor end cover casting machining, including the bottom plate 1, the corner of the bottom plate 1 is provided with mounting hole 11, which can be installed through the position of the installation hole 11, the top of the bottom plate 1 is symmetrically connected with the positioning structure 2 near the side corner, the positioning structure 2 includes positioning column 21, the outer wall of the positioning column 21 is provided with embedded groove 211 near the top position, the inner wall of the limiting sleeve 25 is uniformly provided with a plurality of embedded teeth 251, and the embedded teeth 251 are embedded in the embedded groove 211, so that the limiting sleeve 25 is stably connected with the top of the positioning column 21 through the embedded teeth 251, so as to realize the clamping and fixing, improve the stability in use, the bottom of the positioning column 21 is fixedly connected with the positioning connecting block 22, the positioning connecting block 22 is screw connected with the positioning hole 13 provided in the top of the bottom plate 1, the outer wall of the positioning column 21 is sleeved with the positioning plate 23 near the bottom position, the end surface of the positioning plate 23 is fixedly connected with a plurality of positioning convex blocks 231, the outer wall of the positioning column 21 is screw connected with the adjusting nut 24 near the top position of the positioning plate 23, the top of the adjusting nut 24 is provided with limiting hole 241 near the outer wall position, the bottom of the limiting sleeve 25 is fixedly connected with limiting rod 252 near the outer wall position, and the limiting rod 252 is inserted into the limiting hole 241, so as to limit the position of the adjusting nut 24 after adjustment by using the limiting rod 252, prevent its rotation, cause the end cover processing to shake, the outer wall of the positioning column 21 is clamped and connected with the limiting sleeve 25 near the top position, the adjusting nut 24 is rotated on the positioning column 21, so that the positioning plate 23 provided with multiple positioning convex blocks 231 is pressed and fixed, then the limiting sleeve 25 is sleeved on the top of the positioning column 21, so that the position of the adjusting nut 24 after adjustment is limited, prevent the rotation and shaking in the process of machining.

[0029] As Figure 5 and Figure 6As shown, the top of the bottom plate 1 is away from the position of the positioning structure 2 and is slidably connected with the pressing assembly 3 at the middle position of the bottom plate 1, the pressing assembly 3 comprises a sliding rod 31, the end surface of the sliding rod 31 is slidably connected with the sliding groove 12 opened at the top of the bottom plate 1, the top of the sliding rod 31 is fixedly connected with a connecting barrel 32, the outer wall of the connecting barrel 32 is sleeved with a pressing block 33 close to the bottom position, the outer wall of the connecting barrel 32 is sleeved with a spring 33, the end surface of the pressing block 33 is fixedly connected with a plurality of protection blocks 331, the end surfaces of the spring 33 are respectively abutted against the pressing block 33 and the rotating block 36, the protection blocks 331 are convenient to use to protect the surface of the pressed end cover, prevent the surface from being damaged, and under the abutting action of the spring 33, the pressing block 33 is stably pressed against the surface of the end cover, the inner wall of the connecting barrel 32 is penetrated through with a fixed screw rod 35, the top of the fixed screw rod 35 is fixedly connected with the rotating block 36, the rotating block 36 is used to drive the rotation of the fixed screw rod 35, so that the end surface thereof is abutted against the top of the bottom plate 1, thereby positioning and fixing the sliding rod 31, then the pressing block 33 is lifted to press and fix the surface of the pre-positioned end cover, thereby realizing the positioning effect of the end cover.

[0030] In use, first, the end cover is placed on the bottom plate 1, so that the outer wall thereof is tightly attached to the outer wall of the positioning column 21, then the adjusting nut 24 is rotated on the positioning column 21, so that the abuttingly arranged positioning plate 23 drives the plurality of positioning protrusions 231 of the end cover to be pressed and fixed, then the limiting sleeve 25 is sleeved on the top of the positioning column 21, so that the position of the adjusted adjusting nut 24 is limited and fixed, thereby preventing the rotary shaking in the machining process, finally, the sliding rod 31 is slid on the sliding groove 12, so that it is moved to the corresponding position, the rotating block 36 is used to drive the rotation of the fixed screw rod 35, so that the end surface thereof is abutted against the top of the bottom plate 1, thereby positioning and fixing the sliding rod 31, then the pressing block 33 is lifted to press and fix the surface of the pre-positioned end cover, thereby realizing the positioning effect of the end cover.

[0031] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A positioning fixture for machining of a motor end cover casting, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is symmetrically movably connected with a positioning structure (2) near one side corner, and the top of the bottom plate (1) is slidably connected with a pressing assembly (3) away from the positioning structure (2) and at the middle position of the bottom plate (1).

2. The positioning fixture for machining of a motor end cover casting according to claim 1, characterized in that: The side corner of the bottom plate (1) is provided with a mounting hole (11).

3. The positioning fixture for machining of a motor end cover casting according to claim 1, characterized in that: The positioning structure (2) comprises a positioning column (21), the bottom of the positioning column (21) is fixedly connected with a positioning connecting block (22), the positioning connecting block (22) is threadedly connected with a positioning hole (13) formed in the top of the bottom plate (1), the outer wall of the positioning column (21) is sleeved with a positioning plate (23) near the bottom position, the end surface of the positioning plate (23) is fixedly connected with a plurality of positioning protrusions (231), the outer wall of the positioning column (21) is threadedly connected with an adjusting nut (24) near the top position of the positioning plate (23), and the outer wall of the positioning column (21) is clampingly connected with a limiting sleeve (25) near the top position.

4. The positioning fixture for machining of a motor end cover casting according to claim 3, characterized in that: The outer wall of the positioning column (21) is provided with an embedded groove (211) near the top position, the inner wall of the limiting sleeve (25) is uniformly provided with a plurality of embedded teeth (251), and the embedded teeth (251) are embedded in the embedded groove (211).

5. The positioning fixture for machining of a motor end cover casting according to claim 3, characterized in that: The top of the adjusting nut (24) is provided with a limiting hole (241) near the outer wall position, the bottom of the limiting sleeve (25) is fixedly connected with a limiting rod (252) near the outer wall position, and the limiting rod (252) is inserted into the limiting hole (241).

6. The positioning fixture for machining of a motor end cover casting according to claim 1, characterized in that: The pressing assembly (3) comprises a sliding rod (31), the end surface of the sliding rod (31) is slidably connected with a sliding groove (12) formed in the top of the bottom plate (1), the top of the sliding rod (31) is fixedly connected with a connecting barrel (32), the outer wall of the connecting barrel (32) is sleeved with a pressing block (33) near the bottom position, the outer wall of the connecting barrel (32) is sleeved with a spring (34), the inner wall of the connecting barrel (32) is penetratingly provided with a fixed screw rod (35), and the top of the fixed screw rod (35) is fixedly connected with a rotating block (36).

7. The positioning fixture for machining of a motor end cover casting according to claim 6, characterized in that: The end surface of the pressing block (33) is fixedly connected with a plurality of protection blocks (331), and the end surfaces of the spring (34) are respectively abutted against the pressing block (33) and the rotating block (36).

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