A bushing reducing clamp

Abstract

The utility model relates to a bushing reducing diameter clamp relates to the field of automotive parts, including reducing diameter block and positioning platform, and reducing diameter block includes first reducing diameter block and second reducing diameter block, and the positioning platform periphery is evenly provided with a plurality of connecting blocks, wherein the opposite two connecting blocks far from the positioning platform one end respectively connect first reducing diameter block, and the two opposite connecting blocks of first reducing diameter block and second reducing diameter block are evenly provided with a plurality of second reducing diameter blocks between the connecting block, and reducing diameter block every single with reducing diameter machine connection, the side of first reducing diameter block close to the positioning platform is equipped with reducing diameter boss, and the shape and position of reducing diameter boss match with the pit of bushing outside.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to a bushing diameter reduction fixture. Background Technology

[0002] With the rapid development of the automotive industry, the acceptance of new energy vehicles has increased. In order to obtain better handling and more loading space, entry-level new energy vehicles adopt a rear-engine, rear-wheel-drive powertrain layout. Rear-engine, rear-wheel drive brings greater challenges to the rear subframe bushing. The subframe bushing needs greater rigidity in the Z-direction of the whole vehicle to support the weight of the subframe and powertrain, limit the displacement of the subframe during driving, and play a secondary vibration isolation role. A recess is stamped on the outer tube of the subframe bushing to increase the Z-direction rigidity and thus meet the design requirements. Therefore, traditional diameter reduction fixtures cannot reduce the diameter at the recess position. Therefore, a new diameter reduction fixture structure needs to be designed to reduce the diameter of both the subframe bushing and the recess position at the same time. Utility Model Content

[0003] To address the problem that traditional diameter reduction fixtures cannot reduce the diameter of the subframe bushing in the recessed area, a bushing diameter reduction fixture is proposed.

[0004] The technical solution of this utility model is as follows: a bushing reducing clamp, including a reducing block and a positioning table. The reducing block includes a first reducing block and a second reducing block. A plurality of connecting blocks are evenly arranged around the positioning table. Two connecting blocks arranged opposite each other are connected to the first reducing block at the ends away from the positioning table. Two opposite connecting blocks that are distributed at 90 degrees to the connecting block connected to the first reducing block are connected to the second reducing block. A plurality of second reducing blocks are evenly arranged between the first reducing block and the second reducing block connected to the connecting blocks. Each reducing block is individually connected to a reducing machine.

[0005] The first diameter reduction block has a diameter reduction protrusion on its side near the positioning table. The shape and position of the diameter reduction protrusion match the recess on the outside of the bushing.

[0006] Preferably, the connecting block is connected to the reduced diameter block by bolts.

[0007] Preferably, a positioning rod is provided at the center of the top surface of the positioning platform, and a positioning pin is provided on the outside of the positioning rod. The shape and position of the positioning pin match the positioning groove of the inner tube of the bushing.

[0008] The beneficial effects of this utility model are as follows: The bushing reduction fixture of this utility model accurately positions the recess by coordinating the positioning table, positioning rod and positioning pin. The reduction protrusion on the first reduction block is perfectly matched with the outer recess of the subframe bushing, without the need for manual adjustment. It is simple to operate and easy to maintain. The size of the product after reduction is very stable. Attached Figure Description

[0009] Figure 1 This is a perspective view of the bushing diameter reduction fixture of this utility model;

[0010] Figure 2 This is a cross-sectional view of the bushing diameter reduction fixture of this utility model in its working state;

[0011] Figure 3 This is a perspective view of the working state of the bushing diameter reduction fixture of this utility model.

[0012] The component names corresponding to the various reference numerals in the diagram are as follows:

[0013] 1. Reduction block; 11. First reduction block; 111. Reduction protrusion; 12. Second reduction block; 2. Positioning table; 3. Positioning rod; 4. Positioning pin; 5. Connecting block. Detailed Implementation

[0014] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0015] refer to Figure 1 , 2 As shown in the figure, this application discloses a bushing diameter reduction fixture, including a diameter reduction block 1 and a positioning table 2. The diameter reduction block 1 includes a first diameter reduction block 11 and a second diameter reduction block 12. Four connecting blocks 5 are evenly arranged around the positioning table 2, and the four connecting blocks 5 are evenly distributed at 90 degrees. The ends of two opposite connecting blocks 5 that are away from the positioning table 2 are respectively connected to the first diameter reduction block 11. The two opposite connecting blocks 5 that are distributed at 90 degrees to the connecting blocks 5 that are connected to the first diameter reduction block 11 are respectively connected to the second diameter reduction block 12. Multiple second reduction blocks 12 are evenly arranged between the second reduction blocks 12. In this embodiment, two second reduction blocks 12 are arranged between each first reduction block 11 connected to the connecting block 5 and the second reduction block 12, so there are a total of 12 reduction blocks 1. Each of the 12 reduction blocks 1 is individually connected to the reduction machine. A dovetail groove is provided on the outer wall of the reduction block 1 for connecting the reduction machine. There is a gap between the reduction blocks 1 before reduction, so that the entire fixture is in an open state, allowing the product to enter. After the reduction machine is started, the 12 reduction blocks 1 are simultaneously subjected to force and move towards the positioning table 2.

[0016] The first diameter reduction block 11 has a diameter reduction protrusion 111 on its side near the positioning table 2. The shape and position of the diameter reduction protrusion 111 match the recess on the outside of the bushing to ensure that the actual diameter reduction is consistent with the CAE simulation.

[0017] Connecting block 5 is connected to reducing block 1 by bolts;

[0018] A positioning rod 3 is provided at the center of the top surface of the positioning platform 2. The positioning platform 2 and the positioning rod 3 are integrally formed. A positioning pin 4 is provided on the outside of the positioning rod 3. The shape and position of the positioning pin 4 match the positioning groove of the inner tube of the bushing.

[0019] The fixture is easy to operate and maintain, and the dimensions of the product after diameter reduction are very stable, with a process capability index (Cpk) of over 1.67.

[0020] The specific working principle is as follows:

[0021] refer to Figure 2 , 3 As shown, when diameter reduction is required, align the inner hole of the bushing inner tube with the positioning groove of the positioning rod 3 and the positioning pin 4 in the same direction, and place the bushing into the diameter reduction fixture. When it is lowered to the positioning table 2, it indicates that the bushing has been placed in place. After starting the diameter reduction machine, the 12 diameter reduction blocks 1 are simultaneously subjected to force and move towards the positioning table 2. The connecting block 5 moves along the through hole groove of the positioning table 2. After the 12 diameter reduction blocks move and come into contact with the bushing outer tube and the outer tube recess, they are squeezed and subjected to force, achieving the effect of simultaneous diameter reduction at the positions of the bushing outer tube and the outer tube recess.

[0022] The beneficial effects are:

[0023] This utility model discloses a bushing reduction fixture that uses a positioning table 2, a positioning rod 3, and a positioning pin 4 to coordinate and accurately position the recess. The reduction protrusion 111 on the first reduction block 11 perfectly matches the outer recess of the subframe bushing, eliminating the need for manual adjustment. It is simple to operate, easy to maintain, and the dimensions of the product are very stable after reduction.

[0024] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.

Claims

1. A bushing diameter reduction fixture, characterized in that, The device includes a reducing block (1) and a positioning table (2). The reducing block (1) includes a first reducing block (11) and a second reducing block (12). Multiple connecting blocks (5) are evenly arranged around the positioning table (2). Two connecting blocks (5) arranged opposite to each other are connected to the first reducing block (11) at the end away from the positioning table (2). Two opposite connecting blocks (5) that are distributed at 90 degrees to the connecting block (5) that connects to the first reducing block (11) are connected to the second reducing block (12). Multiple second reducing blocks (12) are evenly arranged between the first reducing block (11) and the second reducing block (12) connected to the connecting block (5). Each reducing block (1) is individually connected to the reducing machine. The first diameter reduction block (11) has a diameter reduction protrusion (111) on the side near the positioning table (2), and the shape and position of the diameter reduction protrusion (111) match the recess on the outside of the bushing.

2. The bushing diameter reduction fixture according to claim 1, characterized in that, The connecting block (5) is connected to the reduced diameter block (1) by bolts.

3. The bushing diameter reduction fixture according to claim 1, characterized in that, The positioning platform (2) has a positioning rod (3) at the center of its top surface and a positioning pin (4) on the outside of the positioning rod (3). The shape and position of the positioning pin (4) match the positioning groove of the inner tube of the bushing.

Images