Torsion beam bushing press

Abstract

This invention discloses a torsion beam bushing press-fitting machine, comprising a first hydraulic cylinder, a bushing upper press head, a bushing lower top seat, an air expansion shaft, rotary cutting blades, an old bushing release block, a motor, and a second hydraulic cylinder. The middle position of the bottom of the bushing lower top seat is rotatably connected to the middle end face of the top of the air expansion shaft via a rotating shaft. A set of rotary cutting blades is distributed and installed at each air expansion part on the air expansion shaft, forming a complete spiral blade structure. The advantages of this invention are: it can press off the old bushing located on the torsion beam; it uses the rotary cutting blades in a spinning state to cleanly cut away any remaining bushing material; it can press the new bushing into the hole structure located on the torsion beam; it achieves an integrated structure function of removing the old and installing the new, enhancing the functional versatility of traditional press-fitting machines and improving the efficiency of pressing and replacing old and new bushings; and it reduces the excessive traditional processing steps between old bushing removal and new bushing pressing.

Description

Technical Field

[0001] This invention relates to the field of press fitting machines, specifically a torsion beam bushing press fitting machine. Background Technology

[0002] The connecting holes on a torsion beam typically require press-fitting of specialized bushings, many of which are made of rubber. Existing torsion beam bushing press-fitting machines, with their limited functionality, cannot efficiently replace old bushings with new ones. Consequently, the process from removing the old bushing to moving it to the press-fitting station for the new bushing is cumbersome and inefficient. Summary of the Invention

[0003] The purpose of this invention is to provide a torsion beam bushing press-fitting machine in order to solve the above-mentioned problems.

[0004] The present invention achieves the above-mentioned objective through the following technical solution: a torsion beam bushing press machine, comprising a bushing upper press head, a bushing lower top seat, an air expansion shaft, a rotary cutting blade, an old bushing release block, a motor, and a second oil cylinder, wherein one end of a guide tube located in the middle of the bushing upper press head is inserted into the middle end of a tube located at the top of the bushing lower top seat by moving downward; the middle position of the bottom of the bushing lower top seat is rotatably connected to the middle end face of the top of the air expansion shaft by a rotating shaft; a set of rotary cutting blades are distributed and installed in each air expansion part on the air expansion shaft, and multiple sets of rotary cutting blades form a complete spiral blade structure;

[0005] A hexagonal hole post is rotatably installed in the middle of the old bushing pressure relief block, and one end of the hexagonal hole post is fixedly connected to the middle of the bottom end of the air expansion shaft. A hexagonal insert rod is slidably connected inside the other end of the hexagonal hole post, and one end of the hexagonal insert rod is connected to the motor located at the output end of the second oil cylinder.

[0006] Preferably, a piston ring is installed at one end of the conduit, and the piston ring slides and seals against the inner wall of the middle insertion tube. The other end of the conduit is connected to a vacuum pump located on one side of the L-shaped carrier plate through a gas guide tube.

[0007] Preferably, the top end of the L-shaped carrier plate is fixedly connected to the cylinder end of the first oil cylinder, and the bottom end of the L-shaped carrier plate is fixedly connected to one side of the work counter. A round hole is provided in the middle of the work counter, and a torsion beam tooling structure is provided at the round hole.

[0008] Preferably, the cylinder body of the second hydraulic cylinder is fixedly connected to the inside of the worktable via a connecting structure.

[0009] Preferably, the surface structure shape of the bottom of the upper pressure head of the bushing and the surface structure shape of the top of the lower top seat of the bushing are respectively matched with the upper and lower end structure shapes of the bushing.

[0010] Preferably, the outer diameter of the catheter, the outer diameter of the central insertion tube, and the outer diameter of the hexagonal prism are all smaller than the inner diameter of the metal channel in the center of the bushing.

[0011] The beneficial effects of this invention are:

[0012] It can punch away the old bushings located on the torsion beam;

[0013] The residual bushing material is cleaned by using a spinning blade assembly in a spinning state;

[0014] It can press-fit new bushings into the hole structure located on the torsion beam;

[0015] It realizes the integrated structure function of dismantling old and installing new, enhances the functional versatility of traditional press-fitting machines, and improves the efficiency of press-fitting and replacing old and new bushings.

[0016] The connection and switching between disassembly and assembly structures is convenient, reducing the excessive traditional processing steps between the removal of old bushings and the pressing of new bushings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a side view of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the partial connection structure of the entire invention;

[0020] Figure 3 This is a schematic diagram of the air shaft connection structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the connection structure between the pressure head, air expansion shaft and hexagonal hole column on the bushing of the present invention.

[0022] Figure 5 This is a schematic diagram of the hexagonal plug connection structure of the present invention.

[0023] In the diagram: 1. First hydraulic cylinder; 2. Upper pressure head of bushing; 3. Guide tube; 310. Air guide tube; 4. Lower top seat of bushing; 410. Middle insertion tube; 5. Air expansion shaft; 510. Air expansion part; 6. Rotary cutting blade; 7. Old bushing pressure release block; 8. Hexagonal hole column; 810. Hexagonal insertion rod; 9. Motor; 10. Second hydraulic cylinder; 11. Vacuum pump; 12. Work table; 12a. Round hole; 13. L-shaped carrier plate. Detailed Implementation

[0024] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0027] Please see Figure 1-5 As shown, a torsion beam bushing press machine includes a bushing upper press head 2, a bushing lower top seat 4, an air expansion shaft 5, a rotary cutting blade 6, an old bushing release block 7, a motor 9, and a second oil cylinder 10, all located at the output end of a first oil cylinder 1. One end of a guide tube 3 located in the middle of the bushing upper press head 2 is inserted into one end of a middle insertion tube 410 located at the top of the bushing lower top seat 4 by moving downward. The middle position of the bottom of the bushing lower top seat 4 is rotatably connected to the middle end face of the top of the air expansion shaft 5 by a rotating shaft. Each air expansion part 510 distributed on the air expansion shaft 5 is equipped with a set of rotary cutting blades 6, and multiple sets of rotary cutting blades 6 form a complete spiral blade structure.

[0028] The old bushing release block 7 has a hexagonal hole column 8 rotatably installed in the middle, and one end of the hexagonal hole column 8 is fixedly connected to the middle of the bottom end of the air expansion shaft 5. The other end of the hexagonal hole column 8 is slidably connected to a hexagonal insert rod 810, and one end of the hexagonal insert rod 810 is connected to the motor 9 located at the output end of the second oil cylinder 10.

[0029] Combination Figure 4As shown, a piston ring is installed at one end of the conduit 3, and the piston ring slides and seals against the inner wall of the middle insertion tube 410. The other end of the conduit 3 is connected to the vacuum pump 11 located on one side of the L-shaped carrier plate 13 through the air guide tube 310.

[0030] When one end of the conduit 3 with the piston ring is slidably inserted into the middle insertion tube 410, the vacuum pump 11 vents the contents of the middle insertion tube 410. After the venting time is set, the valve body located on the vacuum pump 11 is closed, which helps to keep the conduit 3 and the middle insertion tube 410 in a secure, non-separated state.

[0031] like Figure 1 As shown, the top end of the L-shaped carrier plate 13 is fixedly connected to the cylinder end of the first oil cylinder 1, and the bottom end of the L-shaped carrier plate 13 is fixedly connected to one side of the work counter 12. A circular hole 12a is provided in the middle of the work counter 12, and a torsion beam tooling structure is provided at the circular hole 12a.

[0032] The circular hole 12a allows the bushing lower top seat 4, air expansion shaft 5, rotary cutting blade 6, and old bushing pressure release block 7 to pass through unobstructed.

[0033] The cylinder body of the second hydraulic cylinder 10 is fixedly connected to the inside of the worktable 12 via a connecting structure.

[0034] Furthermore, the surface structure shape at the bottom of the upper pressure head 2 of the bushing and the surface structure shape at the top of the lower top seat 4 of the bushing are respectively matched with the upper and lower end structure shapes of the bushing.

[0035] Furthermore, the outer diameter of the catheter 3, the outer diameter of the central insertion tube 410, and the outer diameter of the hexagonal post 8 are all smaller than the inner diameter of the metal channel in the middle of the bushing.

[0036] The following is an example of the procedure for disassembling and replacing bushings in a torsion beam:

[0037] Operation 1: Fix the torsion beam to be disassembled and replaced at the round hole 12a using the torsion beam tooling structure. Then, insert the middle hole structure of the new bushing into the middle insertion tube 410, and make the bottom of the new bushing match and contact the lower top seat 4 of the bushing. At the same time, the hexagonal hole post 8 located at the bottom of the air shaft 5 is inserted into and passes through the middle hole structure of the old bushing located on the torsion beam, which can keep the air shaft 5 and its connecting parts in an upright and immobile state.

[0038] Operation 2: The first cylinder 1 extends and moves the connected upper pressure head 2 of the bushing downward until the bottom surface of the upper pressure head 2 of the bushing matches and contacts the top surface of the new bushing. At the same time, the guide tube 3 located in the middle of the upper pressure head 2 of the bushing slides and seals to be inserted into the middle insertion tube 410.

[0039] Operation 3: Run vacuum pump 11 to exhaust air from the middle insertion tube 410 connected by air guide tube 310. After the set exhaust time is reached, the valve body on vacuum pump 11 is closed, so that the guide tube 3 and the middle insertion tube 410 are in a tight and firm connection.

[0040] Operation 4: When the second hydraulic cylinder 10 is in the extended state, insert one end of the hexagonal insert rod 810 connected to it into the hexagonal hole of the hexagonal hole column 8. At the same time, according to the inner diameter of the hole structure of the torsion beam mounting bushing, inflate the air shaft 5, so that the air expansion part 510 is in an outward movement state, thereby achieving the effect of extending the rotary cutting blade 6 at the air expansion part 510 outward, and the edge of the rotary cutting blade 6 until it is in sliding contact with the inner wall of the hole structure of the torsion beam mounting bushing.

[0041] Operation 5: Begin the replacement process: The first hydraulic cylinder 1 extends, while the second hydraulic cylinder 10 retracts with the same amount of change, moving the fixed new bushing, air shaft 5, and old bushing release block 7 downwards. Simultaneously, the motor 9 drives the air shaft 5, connected by the hexagonal insert 810 and hexagonal hole column 8, and the spiral-structured rotary cutting blade 6 to rotate, completing three objectives: 1. Punching off the old bushing located on the torsion beam; 2. Using the rotary cutting blade 6 in a spinning state to cleanly cut away any remaining bushing material; 3. Pressing the new bushing into the hole structure located on the torsion beam.

[0042] Operation 6: When the new bushing is installed, the lower top seat 4 of the bushing is positioned on the back of the hole structure on the torsion beam. The valve body on the vacuum pump 11 is opened, making the air pressure inside the middle insertion tube 410 the same as the external air pressure. This releases the tight connection between the guide tube 3 and the middle insertion tube 410. Then, the first cylinder 1 contracts, driving the upper pressure head 2 of the connected bushing to move upward and reset. The second cylinder 10 contracts, continuously moving the lower top seat 4 of the connected bushing downward, so that the middle insertion tube 410 on the lower top seat 4 of the bushing is completely separated from the new bushing, thus completing the press-fitting task.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalent elements of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A torsion beam bushing press-fitting machine, characterized in that: The system includes a bushing upper pressure head (2), a bushing lower top seat (4), an air expansion shaft (5), a rotary cutting blade (6), an old bushing pressure release block (7), a motor (9), and a second oil cylinder (10) located at the output end of the first oil cylinder (1). One end of the guide tube (3) located in the middle of the bushing upper pressure head (2) is inserted into the port of the middle insertion tube (410) located at the top of the bushing lower top seat (4) by moving downward. The middle position of the bottom of the bushing lower top seat (4) is rotatably connected to the middle end face of the top of the air expansion shaft (5) through a rotating shaft. Each air expansion part (510) distributed on the air expansion shaft (5) is equipped with a set of rotary cutting blades (6), and multiple sets of rotary cutting blades (6) form a complete spiral blade structure. The old bushing pressure relief block (7) is rotatably mounted with a hexagonal hole column (8) in the middle, and one end of the hexagonal hole column (8) is fixedly connected to the middle of the bottom end of the air expansion shaft (5). The other end of the hexagonal hole column (8) is slidably connected with a hexagonal insert rod (810), and one end of the hexagonal insert rod (810) is connected to the motor (9) located at the output end of the second oil cylinder (10).

2. The torsion beam bushing press-fitting machine according to claim 1, characterized in that: One end of the conduit (3) is equipped with a piston ring, and the piston ring slides and seals against the inner wall of the middle insertion tube (410). The other end of the conduit (3) is connected to a vacuum pump (11) located on one side of the L-shaped carrier plate (13) through a gas duct (310).

3. The torsion beam bushing press-fitting machine according to claim 2, characterized in that: The top of the L-shaped carrier plate (13) is fixedly connected to the cylinder end of the first oil cylinder (1), and the bottom of the L-shaped carrier plate (13) is fixedly connected to one side of the work counter (12). A round hole (12a) is provided in the middle of the work counter (12), and a torsion beam tooling structure is provided at the round hole (12a).

4. The torsion beam bushing press-fitting machine according to claim 1, characterized in that: The cylinder body of the second cylinder (10) is fixedly connected to the inside of the worktable (12) through a connecting structure.

5. The torsion beam bushing press-fitting machine according to claim 1, characterized in that: The surface structure shape at the bottom of the upper pressure head (2) of the bushing and the surface structure shape at the top of the lower top seat (4) of the bushing are respectively matched with the upper and lower end structure shapes of the bushing.

6. The torsion beam bushing press-fitting machine according to claim 1, characterized in that: The outer diameter of the catheter (3), the outer diameter of the central insertion tube (410), and the outer diameter of the hexagonal post (8) are all smaller than the inner diameter of the metal channel in the middle of the bushing.

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