A kind of press mounting tool of finished flange plate and rear axle housing assembly
By combining guide sleeves, top blocks, limit blocks, and cylinder systems, the problems of insufficient positioning accuracy and low automation in the press-fitting process of finished flanges and rear axle housings have been solved, achieving efficient and precise assembly and high-capacity production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI JIANGLING CHASSIS CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-26
Smart Images
Figure CN224406636U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of machining equipment, and more particularly to a press-fitting fixture for a finished flange and rear axle housing assembly. Background Technology
[0002] In the manufacturing process of automotive rear axles, the press-fitting of the finished flange to the rear axle housing assembly is one of the key assembly steps. The flange needs to be precisely aligned with the rear axle housing and pressed into place to ensure the coaxiality, sealing performance, and overall structural strength of the transmission system. Traditional press-fitting processes typically use hydraulic or pneumatic driven linear press-fitting methods, but the following technical problems exist in actual assembly: Insufficient positioning accuracy: The assembly of the flange and the rear axle housing requires strict coaxiality, but traditional tooling relies on manual or simple guiding mechanisms for positioning, which can easily lead to press-fitting misalignment due to accumulated errors, affecting the product qualification rate. Low degree of automation: Existing tooling often requires manual intervention (such as manually adjusting the flange angle or position), which is inefficient and difficult to adapt to the needs of mass production. Utility Model Content
[0003] The purpose of this utility model is to overcome the defects of the existing technology and provide a press-fitting tool for the finished flange and rear axle housing assembly.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A press-fitting fixture for a finished flange and rear axle housing assembly includes a body, a guide sleeve mounted on the body, a top block mounted on the guide sleeve, a limiting block mounted on one side of the top block, a mounting cavity provided on the guide sleeve, a center point provided inside the mounting cavity, a spring sleeved on the outside of the center point, one end of the spring being connected to the center point, and the other end being connected to the inner wall of the mounting cavity.
[0006] The main body is equipped with two cylinder seats, one of which has a left-turn cylinder and the other has a right-turn cylinder.
[0007] Furthermore, the left-turning cylinder is connected to the first swing arm, and the right-turning cylinder is connected to the second swing arm.
[0008] Furthermore, a first positioning post is installed at the end of the first swing arm, and a second positioning post is installed at the end of the second swing arm.
[0009] Furthermore, the end of the limiting block is provided with multiple positioning pins.
[0010] Furthermore, a driving component is provided at the bottom of the main body, which is a hydraulic cylinder or a pneumatic cylinder.
[0011] Furthermore, the guide sleeve is equipped with an observation hole.
[0012] The beneficial effects of this utility model are as follows: 1. The left and right corner cylinders of this application drive the first and second swing arms respectively, which drive the positioning column to accurately position the flange at an angle, avoiding manual adjustment errors and ensuring the coaxiality of the flange and the rear axle housing.
[0013] 2. The center inside the guide sleeve automatically presses against the center of the workpiece (shaft head) under the action of the spring, realizing dynamic correction and effectively reducing the risk of misalignment during the press-fitting process;
[0014] 3. Multiple locating pins at the end of the limit block provide stable constraints to prevent the flange from shifting during press-fitting and ensure consistent assembly position. Attached Figure Description
[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model.
[0017] Figure 2 This is a bottom view of the present invention. Detailed Implementation
[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0019] Reference Figure 1 , Figure 2 A press-fitting fixture for a finished flange and rear axle housing assembly includes a body 1, a guide sleeve 2 mounted on the body 1, a top block 3 mounted on the guide sleeve 2, a limiting block 4 mounted on one side of the top block 3, a mounting cavity 5 provided on the guide sleeve 2, a top point 6 provided inside the mounting cavity 5, a spring 7 sleeved on the outside of the top point 6, one end of the spring 7 being connected to the top point 6, and the other end being connected to the inner wall of the mounting cavity 5.
[0020] The main body 1 is provided with two cylinder seats 8, one of which is provided with a left-turning cylinder 9, and the other is provided with a right-turning cylinder 10.
[0021] Furthermore, the left-turning cylinder 9 is connected to the first swing arm 11, and the right-turning cylinder 10 is connected to the second swing arm 12. The end of the first swing arm 11 is equipped with a first positioning post 13, and the end of the second swing arm 12 is equipped with a second positioning post 14.
[0022] Furthermore, the end of the limiting block 4 is provided with multiple positioning pins, the bottom of the body 1 is provided with a driving component, which is a hydraulic cylinder or a pneumatic cylinder, and the guide sleeve 2 is provided with an observation hole 15.
[0023] When using this fixture, first place the rear axle housing on the fixture's pre-positioning plate, and then install the left and right finished flanges onto the fixture using positioning pins.
[0024] Rotate the switches of the left-turning cylinder 9 and the right-turning cylinder 10 to bring the finished flange and the end face of the limit block 4 tightly together without gaps.
[0025] Start the drive unit at the bottom of the fixture. The drive unit moves the entire fixture forward. The shaft head extends into the fixture and is precisely positioned by the center point 6 being in contact with the shaft head reference. The observation hole 15 of the guide sleeve 2 can be used to check whether the center point 6 coincides with the shaft head reference.
[0026] The drive unit continues to move forward, with the tip 6 compressing the spring 7, pressing it tightly against the shaft head. It continues forward until the end face of the top block 3 is flush with the end face of the shaft head, at which point the drive unit can no longer move forward. The contact of the tip 6 is checked through the observation hole 15. The rear axle housing is then welded to the finished flange.
[0027] After the finished flanges are press-fitted and welded, the process dimensions meet the requirements of the drawings. This allows the finished flanges to be welded without further machining, thus increasing machining capacity and meeting the production requirement of 80 units per day. This represents a new level of processing capability.
[0028] The left and right corner cylinders of this application drive the first and second swing arms respectively, which drive the positioning column to accurately position the flange at an angle, avoiding manual adjustment errors and ensuring the coaxiality of the flange and the rear axle housing.
[0029] The center point 6 inside the guide sleeve 2 automatically presses against the center of the workpiece (shaft head) under the action of the spring 7, realizing dynamic correction and effectively reducing the risk of deviation during the pressing process;
[0030] Multiple locating pins at the ends of the limit block 4 provide stable constraints to prevent the flange from shifting during press-fitting and ensure consistent assembly position.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A press-fitting fixture for a finished flange and rear axle housing assembly, comprising a body, a guide sleeve mounted on the body, a top block mounted on the guide sleeve, and a limiting block mounted on one side of the top block, characterized in that, The guide sleeve is provided with a mounting cavity, a center point is provided inside the mounting cavity, a spring is sleeved on the outside of the center point, one end of the spring is connected to the center point, and the other end is connected to the inner wall of the mounting cavity. The main body is provided with two cylinder seats, one of which is provided with a left-turning cylinder and the other is provided with a right-turning cylinder.
2. The press-fitting fixture for a finished flange and rear axle housing assembly according to claim 1, characterized in that, The left-turning cylinder is connected to the first swing arm, and the right-turning cylinder is connected to the second swing arm.
3. The press-fitting fixture for a finished flange and rear axle housing assembly according to claim 2, characterized in that, The first swing arm has a first positioning post installed at its end, and the second swing arm has a second positioning post installed at its end.
4. The press-fitting fixture for a finished flange and rear axle housing assembly according to claim 1, characterized in that, The end of the limiting block is provided with multiple positioning pins.
5. The press-fitting fixture for a finished flange and rear axle housing assembly according to claim 1, characterized in that, The bottom of the main body is provided with a driving component, which is a hydraulic cylinder or a pneumatic cylinder.
6. The press-fitting fixture for a finished flange and rear axle housing assembly according to claim 1, characterized in that, The guide sleeve is provided with an observation hole.