Back pressure tool for bushing press fitting

Abstract

The utility model discloses a back pressure tooling for bushing press fitting, which belongs to the technical field of bushing press fitting and comprises a back pressure tooling main body, the back pressure tooling main body consists of two cylinders, a back pressure table board, a rectangular frame, a threaded rod, a rotating column, a support spring, an anti-drop plate and a positioning column, and the two cylinders are symmetrically and fixedly mounted at the lower end of the back pressure table board; the back pressure tool body is composed of an air cylinder, a back pressure table top, four rectangular frames and four threaded rods, the four rectangular frames are all movably installed on the back pressure table top, the four threaded rods are all installed in the back pressure table top, and the threaded rods are rotationally connected with the rectangular frames at the same time, and the back pressure tool body is composed of the air cylinder, the back pressure table top, the rectangular frames, the threaded rods, rotating columns, supporting springs, anti-disengaging plates and positioning columns. The back pressure tool main body can be used for limiting and fixing bushings with different diameters, so that the universality of the back pressure tool main body is better, and the phenomena of deflection, edge pulling, damage to the steel backing of the bushings and the like when the bushings are pressed into a shaft hole of a parent body can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bushing press-fitting, in particular to a back-pressure tooling for bushing press-fitting. Background Art

[0002] Bushing press-fitting is a processing method that presses one object (called a bushing) into another object (called a matrix), which is commonly used in machinery manufacturing, automobile manufacturing, aerospace and other industries to connect and fix parts. The back-pressure tooling used for bushing press-fitting is a special tool that can provide reverse pressure during the bushing press-fitting process to ensure that the bushing is correctly and stably pressed into the target position. In the existing patent application with application number CN202320677048.0, a connecting rod bushing press-fitting fixture is proposed, in which the diameter of the round rod is fixed, so that only bushings of the same diameter can be sleeved on it. If some bushings with larger diameters are sleeved, the round rod will be difficult to limit the bushing. At this time, when the bushing is pressed into the shaft hole of the matrix, it is easy to produce skew, edge pulling and damage to the steel back of the bushing, which seriously affects the accuracy of the bushing and the matrix, so it needs to be improved. Utility Model Content

[0003] The main purpose of the utility model is to provide a back-pressure tool for bushing press-fitting, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A back-pressure tool for bushing press-fitting, comprising a back-pressure tool body, the back-pressure tool body consisting of a cylinder, a back-pressure table, a rectangular frame, a threaded rod, a rotating column, a support spring, an anti-slip plate and a positioning column, the cylinder having two cylinders symmetrically fixedly mounted on the lower end of the back-pressure table, the rectangular frame having four rectangular frames movably mounted on the back-pressure table, the threaded rods having four threaded rods mounted in the back-pressure table, the threaded rods being rotatably connected to the rectangular frame at the same time, the rotating columns having four threaded rods fixedly mounted on the outer ends of the four threaded rods respectively, the support spring being mounted in the rectangular frame, the anti-slip plate movably mounted in the rectangular frame, and the anti-slip plate is simultaneously located at the upper end of the support spring, the positioning column being fixedly mounted on the upper end of the anti-slip plate, and the positioning column simultaneously passes upward through the upper side wall of the rectangular frame.

[0006] Preferably, the cylinder on the back-pressure tooling body is fixedly mounted on the upper end of the workbench.

[0007] Preferably, a mounting bracket is fixedly mounted on the upper end of the workbench, a press-fitting assembly is fixedly mounted on the mounting bracket, and the press-fitting assembly is located directly above the back-pressing tooling body.

[0008] Preferably, a mounting guide rail groove is provided on the back-pressure table on the back-pressure tooling body, four mounting threaded holes are symmetrically provided on the outer wall of the back-pressure table, the mounting threaded holes are connected to the mounting guide rail groove, and the back-pressure table is fixedly connected to the telescopic rod of the cylinder.

[0009] Preferably, the threaded rod is installed in the mounting threaded hole, and the rotating column is located outside the back pressure table.

[0010] Preferably, the rectangular frame is movably mounted in the mounting guide rail groove, an upper wall of the rectangular frame is provided with a mounting through hole, and the positioning column passes through the mounting through hole.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By setting up a back-pressure tooling body composed of a cylinder, a back-pressure table, a rectangular frame, a threaded rod, a rotating column, a support spring, an anti-slip plate and a positioning column, the back-pressure tooling body can limit and fix bushings of different diameters, thereby making the back-pressure tooling body more versatile, and further reducing the occurrence of skewness, edge pulling and damage to the steel back of the bushing when the bushing is pressed into the parent shaft hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the cylinder and the back pressure table of the utility model;

[0015] Figure 3 It is a schematic structural diagram of a rectangular frame, a threaded rod, a rotating column, a supporting spring, an anti-slip plate and a positioning column of the utility model;

[0016] Figure 4 It is a schematic structural diagram of a rectangular frame of the utility model after being cut.

[0017] In the figure: 1. Back-pressure tooling body; 2. Workbench; 3. Mounting bracket; 4. Press-fitting assembly; 5. Cylinder; 6. Back-pressure table; 7. Mounting guide groove; 8. Mounting threaded hole; 9. Rectangular frame; 10. Threaded rod; 11. Rotating column; 12. Support spring; 13. Anti-slip plate; 14. Positioning column; 15. Mounting through hole. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a back-pressure tool for bushing press-fitting includes a back-pressure tool body 1, a cylinder 5 on the back-pressure tool body 1 is fixedly mounted on the upper end of a workbench 2, a mounting bracket 3 is fixedly mounted on the upper end of the workbench 2, a pressing assembly 4 is fixedly mounted on the mounting bracket 3, and the pressing assembly 4 is located directly above the back-pressure tool body 1. During bushing press-fitting, the matrix can be placed on the back-pressure tool body 1, and the bushing can be placed on the matrix at the same time, and the bushing and the matrix are made coaxial, and then the pressing assembly 4 can be started, so that the bushing is squeezed into the axial hole of the matrix by using the pressing assembly 4, and when the pressing assembly 4 contacts the bushing, the cylinder 5 on the back-pressure tool body 1 is started again to provide reverse pressure, and finally the bushing will be pressed into the axial hole of the matrix.

[0020] Furthermore, the back-pressure tooling body 1 is composed of a cylinder 5, a back-pressure table 6, a rectangular frame 9, a threaded rod 10, a rotating column 11, a supporting spring 12, an anti-slip plate 13 and a positioning column 14. The cylinder 5 has two and is symmetrically fixedly installed at the lower end of the back-pressure table 6, the rectangular frame 9 has four and is movably installed on the back-pressure table 6, the threaded rod 10 has four and is installed in the back-pressure table 6, the threaded rod 10 is rotatably connected to the rectangular frame 9 at the same time, the rotating column 11 has four and is respectively fixedly installed at the outer ends of the four threaded rods 10, the supporting spring 12 is installed in the rectangular frame 9, the anti-slip plate 13 is movably installed in the rectangular frame 9, and the anti-slip plate 13 At the same time, it is located at the upper end of the support spring 12, the positioning column 14 is fixedly installed at the upper end of the anti-slip plate 13, and the positioning column 14 simultaneously passes upward through the upper side wall of the rectangular frame 9, and the back pressure table 6 on the back pressure tooling body 1 is provided with a mounting guide groove 7, and the outer wall of the back pressure table 6 is symmetrically provided with four mounting threaded holes 8, and the mounting threaded holes 8 are connected with the mounting guide groove 7, and the back pressure table 6 is fixedly connected with the telescopic rod of the cylinder 5, and the threaded rod 10 is installed in the mounting threaded hole 8, and the rotating column 11 is located on the outer side of the back pressure table 6, and the rectangular frame 9 is movably installed in the mounting guide groove 7, and the upper wall of the rectangular frame 9 is provided with a mounting through hole 15, and the positioning column 14 Passing through the mounting through hole 15, when the mother body and the bushing are placed on the back-pressure tooling body 1, the mother body can be sleeved on the four positioning posts 14, so that the mother body is finally located at the upper end of the back-pressure table 6, and then the bushing is sleeved on the four positioning posts 14, and then the threaded rod 10 is rotated by the rotating column 11, so that the threaded rod 10 moves outward in the mounting threaded hole 8. At this time, the threaded rod 10 will move outward with the positioning posts 14, and finally the positioning posts 14 will contact the inner wall of the bushing. When the four positioning posts 14 are in contact with the inner wall of the bushing, the bushing is limited; when the press-fitting component 4 is pressed down, the press-fitting component 4 will push the positioning posts 14 downward When the cylinder 5 moves, the anti-slip plate 13 will compress the supporting spring 12. At the same time, the cylinder 5 will push the back-pressure table 6 to move upward, thereby providing reverse pressure, until the bushing is pressed into the axial hole of the mother body. By setting a back-pressure tooling body 1 composed of the cylinder 5, the back-pressure table 6, the rectangular frame 9, the threaded rod 10, the rotating column 11, the supporting spring 12, the anti-slip plate 13 and the positioning column 14, the back-pressure tooling body 1 can limit and fix bushings of different diameters, so that the back-pressure tooling body 1 has better versatility, and further can reduce the occurrence of skewness, edge pulling and damage to the steel back of the bushing when the bushing is pressed into the axial hole of the mother body.

[0021] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A back pressure tool for bushing press fitting, comprising a back pressure tool body (1), characterized in that: The back-pressure tooling body (1) is composed of a cylinder (5), a back-pressure table (6), a rectangular frame (9), a threaded rod (10), a rotating column (11), a supporting spring (12), an anti-slip plate (13) and a positioning column (14). The cylinder (5) has two and is symmetrically fixedly installed at the lower end of the back-pressure table (6). The rectangular frame (9) has four and is movably installed on the back-pressure table (6). The threaded rod (10) has four and is installed in the back-pressure table (6). The rotating column (11) is rotatably connected with the rectangular frame (9), the rotating column (11) has four parts and is respectively fixedly mounted on the outer ends of the four threaded rods (10), the supporting spring (12) is mounted in the rectangular frame (9), the anti-slip plate (13) is movably mounted in the rectangular frame (9), and the anti-slip plate (13) is simultaneously located at the upper end of the supporting spring (12), the positioning column (14) is fixedly mounted on the upper end of the anti-slip plate (13), and the positioning column (14) simultaneously passes upward through the upper side wall of the rectangular frame (9).

2. A back pressure tool for bushing press fitting according to claim 1, characterized in that: The cylinder (5) on the back-pressure tooling body (1) is fixedly mounted on the upper end of the workbench (2).

3. A back pressure tool for bushing press fitting according to claim 2, characterized in that: A mounting bracket (3) is fixedly mounted on the upper end of the workbench (2), a press-fitting assembly (4) is fixedly mounted on the mounting bracket (3), and the press-fitting assembly (4) is located directly above the back-pressing tooling body (1).

4. A back-pressing tool for bushing press-fitting according to claim 3, characterized in that: A mounting guide groove (7) is provided on the back-pressure table (6) on the back-pressure tooling body (1); four mounting threaded holes (8) are symmetrically provided on the outer wall of the back-pressure table (6); the mounting threaded holes (8) are connected to the mounting guide groove (7); and the back-pressure table (6) is fixedly connected to the telescopic rod of the cylinder (5).

5. A back-pressing tool for bushing press-fitting according to claim 4, characterized in that: The threaded rod (10) is installed in the mounting threaded hole (8), and the rotating column (11) is located outside the counter-pressure table (6).

6. A back-pressing tool for bushing press-fitting according to claim 5, characterized in that: The rectangular frame (9) is movably mounted in the mounting guide rail groove (7); a mounting through hole (15) is provided on the upper wall of the rectangular frame (9); and the positioning column (14) passes through the mounting through hole (15).

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