Positioning device for machining automobile motor shell
By using a combination of base plate, support plate and positioning core, the complex problem of center and angular positioning of automotive motor housing is solved, realizing efficient and simplified positioning operation and improving production efficiency.
Patent Information
- Application Number
- CN202520170125.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-24
AI Technical Summary
In the existing technology, the center and angular positioning methods of automotive motor housing are complex, resulting in low production efficiency and high precision requirements for positioning pins. Even slight deviations can prevent accurate matching.
A positioning device consisting of a base plate, a support plate, and a positioning core is adopted. By using a combination of a second linear cylinder and a first linear cylinder, angular and center positioning of the automotive motor housing is achieved, simplifying the operation process.
It improves the production efficiency of automotive motor housings, simplifies operation steps, reduces the requirements for positioning accuracy, and improves positioning accuracy.
Smart Images
Figure CN223917702U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a positioning fixture. Specifically, it is a positioning device used to fix the center and angular direction of an automotive motor housing during machining. Background Technology
[0002] In the automotive motor housing manufacturing industry, it's well known that automotive motor housings are mostly cylindrical. During processing, they require precise centering and angular positioning to prevent wobbling and ensure quality. Currently, the primary method for centering and angular positioning of automotive motor housings is to use multiple locating pins to limit lateral movement and rotation. While using multiple locating pins achieves proper positioning, it demands high precision in the pins and their spacing. Even slight deviations can prevent the machined motor housing from accurately fitting the locating pins. Therefore, this method is cumbersome and results in low production efficiency. Utility Model Content
[0003] The problem this invention aims to solve is to provide a positioning device for machining automotive motor housings. This positioning device is easy to operate and has high production efficiency.
[0004] The above-mentioned problems to be solved by this utility model are achieved through the following technical solutions:
[0005] This utility model discloses a positioning device for processing automotive motor housings, characterized by: a base plate, from bottom to top of which a support plate and a positioning core are sequentially connected. The support plate is a circular plate with a first straight edge cut into one side. The positioning core has a large-diameter edge and a small-diameter edge, with the diameter of the portion of the positioning core containing the small-diameter edge being smaller than that of the support plate. The arc of the large-diameter edge is smaller than that of the small-diameter edge, and at least two first linear cylinders are evenly distributed on the outer circumference of the small-diameter edge. A second straight edge cut into the middle of the large-diameter edge is present. The length of the first straight edge is shorter than that of the second straight edge. A left support block and a right support block are respectively located on the base plate before the first and second straight edges. The left and right support blocks are of the same height, and a top head and a second linear cylinder are respectively located on opposite sides of their upper ends. The second linear cylinder is horizontally arranged and opposite the top head. The line connecting the top head and the piston rod of the second linear cylinder is parallel to the first and second straight edges, and the line is symmetrically arranged with respect to the first and second straight edges.
[0006] A further improvement of this utility model is that there is a clamping block inside the right support block. The clamping block has a rectangular cross-section, is arranged horizontally, and one end is connected to the right support block.
[0007] As can be seen from the above scheme, this utility model contains a base plate, on which a support plate and a positioning core are connected sequentially from bottom to top. The support plate is a circular plate with a first straight edge cut into one side. The positioning core has a large-diameter edge and a small-diameter edge, and the diameter of the part of the positioning core where the small-diameter edge is located is smaller than that of the support plate. The arc of the large-diameter edge is smaller than that of the small-diameter edge, and at least two first linear cylinders are evenly distributed on the outer circle of the small-diameter edge. The middle of the large-diameter edge has a second straight edge cut into it. The length of the first straight edge is smaller than that of the second straight edge. Before the first and second straight edges, there are left support blocks and right support blocks on the base plate, respectively. The left and right support blocks are of the same height, and there are top heads and second linear cylinders on opposite sides of their upper ends, respectively. The second linear cylinder is arranged horizontally and opposite to the top head. The line connecting the top head and the piston rod of the second linear cylinder is parallel to the first and second straight edges, and the line is symmetrically arranged with respect to the first and second straight edges. During operation, only the second linear cylinder and three first linear cylinders need to be activated. First, the second linear cylinder clamps the outlet box of the automotive motor housing between the outer end of its piston rod and the top head, achieving angular positioning of the automotive motor housing. Then, the piston rods of the three first linear cylinders extend outwards and press against the inner wall of the automotive motor housing opposite the outlet box, achieving center positioning of the automotive motor housing being processed. Compared with the prior art, this method is not only easier to operate but also improves production efficiency. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the positioning device for processing automotive motor housing according to this utility model;
[0009] Figure 2 A three-dimensional schematic diagram;
[0010] Figure 3 This is a schematic diagram of the positioning device for machining the automotive motor housing according to this utility model, which includes machined parts;
[0011] Figure 4 yes Figure 3 A schematic diagram of the AA section. Detailed Implementation
[0012] like Figure 1 , Figure 2As shown, the positioning device for processing automotive motor housings of this utility model includes a base plate 1, on which a support plate 3 and a positioning core 2 are connected sequentially from bottom to top. The support plate 3 is a circular plate with a first straight edge 301 cut out on one side. The positioning core 2 includes a large-diameter edge 22 and a small-diameter edge 21. The diameter of the part of the positioning core 2 containing the small-diameter edge 21 is smaller than that of the support plate 3. The arc of the large-diameter edge 22 is smaller than that of the small-diameter edge 21. Three first linear cylinders 4 are evenly distributed on the outer circle of the small-diameter edge 21. A second straight edge 201 cut out is located in the middle of the large-diameter edge 22. The length of the first straight edge 301 is smaller than that of the second straight edge 201, and the first straight edge 301 protrudes. Outside the second straight edge 201, a left support block 9 and a right support block 5 are respectively provided on the base plate 1 before the first and second straight edges. The left support block 9 and the right support block 5 are of the same height, and their lower ends are fixed to the base plate 1 by bolts. A top head 8 and a second linear cylinder 6 are respectively installed on opposite sides of their upper ends. The second linear cylinder 6 is arranged horizontally and is opposite to the top head 8. The line connecting the top head 8 and the piston rod of the second linear cylinder 6 is parallel to the first straight edge 301 and the second straight edge 201, and the line is symmetrically arranged with respect to the first and second straight edges.
[0013] The right support block 5 has a clamping block 7 fixed inside it. The clamping block 7 has a rectangular cross-section and is arranged horizontally. One end of the clamping block 7 is connected to the right support block 5.
[0014] See Figure 3 and Figure 4 The automotive motor housing being processed includes a cylinder 10, one side of which is provided with a terminal box 11. During operation, the second linear cylinder 6 and three first linear cylinders 4 are activated. First, the second linear cylinder 6 clamps the terminal box 11 of the automotive motor housing between the outer end of the piston rod of the second linear cylinder 6 and the top head 9, thereby angularly positioning the automotive motor housing. Then, the piston rods of the three first linear cylinders 4 extend outwards and press against the inner wall of the automotive motor housing opposite to the terminal box 11, thereby achieving center positioning of the automotive motor housing being processed.
Claims
1. A positioning device for machining automotive motor housings, characterized in that: The utility model relates to a kind of positioning device, including bottom plate (1), which is sequentially connected with support disc (3) and positioning core (2) from bottom to top on the bottom plate (1), the support disc (3) is round plate, and one side has the first straight edge (301) cut into;The positioning core (2) contains large diameter side (22) and small diameter side (21), the diameter of the part of positioning core (2) where the small diameter side (21) is located is less than support disc (3);The arc of the large diameter side (22) is less than the arc of small diameter side (21), and the outer circle of the small diameter side (21) is uniformly distributed with at least two first linear cylinders (4);The second straight edge (201) is cut into in the middle of the large diameter side (22);The length of the first straight edge (301) is less than the second straight edge (201);The bottom plate (1) before first, second straight edge respectively has left support block (9) and right support block (5), and the height of the left support block (9) and the right support block (5) is same, and the upper end of the left support block (9) and the right support block (5) is respectively provided with top head (8) and second linear cylinder (6) on opposite sides;Second linear cylinder (6) is horizontally arranged and opposite to top head (8), and the line between top head (8) and the piston rod of second linear cylinder (6) is parallel to the first straight edge (301), the second straight edge (201), and the line is symmetrically arranged between the first straight edge and the second straight edge.
2. The positioning device for processing of an electric machine housing according to claim 1, characterized in that: The inside of the right support block (5) has tight block (7), and the cross section of the tight block (7) is rectangular, which is horizontally arranged, and one end is connected with the right support block (5).