A device for assembling a bushing for a steering gear housing

Abstract

The utility model discloses a kind of automobile steering gear housing bushing assembly devices, comprising: machine table;Shell positioning mechanism, set on the machine table, including shell placement table and positioning assembly, the positioning assembly is positioned to the shell placed on the shell placement table, to make the bushing mouth axis of the shell keep vertical;Bushing press-fitting mechanism, set on the machine table, including press-fitting head, driving part and positioning column, the press-fitting head is located above the bushing mouth and its axis is collinear with the axis of bushing mouth, the driving part drives the press-fitting head to press down, the lower end of the press-fitting head is positioned in the positioning column, the outer diameter of the positioning column is compatible with the inner diameter of bushing, the lower end surface of the press-fitting head is provided with magnetic element, for adsorbing the bushing.The utility model does not need worker manual pre-pressing to be into bushing mouth, avoid the damage of inclined press-fitting to rubber layer, improve the reliability of steering gear housing.

Description

Technical Field

[0001] This utility model relates to the field of steering gear manufacturing technology, specifically to an assembly device for an automotive steering gear housing bushing. Background Technology

[0002] The steering gear is one of the core components of a vehicle's steering system. It is responsible for transmitting the steering torque and angle applied by the driver through the steering wheel to the wheels, thereby achieving vehicle steering control. As a protective shell for the steering gear, the steering gear housing effectively protects the internal precision mechanical structure from the influence of the external environment, ensuring smooth and stable steering operation.

[0003] like Figure 1 As shown, a steering gear housing has a first port 23 at one end and a mounting base 24 at the other end. The mounting base 24 has a second port 25 and a shaft hole 26 for connecting other components. The side of the housing has two bushing openings 27 with parallel axes.

[0004] like Figure 2 As shown, the bushing that matches the above-mentioned housing includes a magnetically attracted metal column 28, a through-hole 29 is provided in the metal column 28, and a rubber layer 30 is covered on the outer periphery of the metal column 28, with multiple annular protrusions on the rubber layer 30.

[0005] In the production of steering gear housings, bushings need to be installed into bushing openings to reduce friction and vibration. Existing bushing installation methods typically rely on interference fits to secure the bushing and bushing opening. During installation, operators first pre-press the bushing into the mounting opening using hand tools for initial positioning, followed by final pressing using a pressure device. However, during manual pre-pressing, obstructions from the housing structure or operational errors can easily lead to incomplete alignment between the bushing axis and the housing bushing opening axis. Although the bushing can eventually be pressed into the bushing opening, this tilted pressing can cause excessive localized compression of the rubber layer, damaging its lifespan and ultimately affecting the reliability of the steering gear housing. Utility Model Content

[0006] The purpose of this utility model is to provide an assembly device for automotive steering gear housing bushings, which can press the bushing into the bushing opening without manual pre-pressing by workers, avoiding damage to the rubber layer caused by tilted pressing and improving the reliability of the steering gear housing.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is: a vehicle steering gear housing bushing assembly device, comprising:

[0008] Machine tool;

[0009] A housing positioning mechanism is provided on the machine base, including a housing placement platform and a positioning component. The positioning component is used to position the housing placed on the housing placement platform so that the bushing opening axis of the housing remains vertical.

[0010] A bushing pressing mechanism, mounted on the machine base, includes a pressing head, a driving component, and a positioning post. The pressing head is located above the bushing opening, and its axis is collinear with the axis of the bushing opening. The driving component drives the pressing head to press down. The positioning post is located at the lower end of the pressing head, and the outer diameter of the positioning post is adapted to the inner diameter of the bushing. A magnetic element is provided on the lower end face of the pressing head for adsorbing the bushing.

[0011] A further improvement of this utility model is that the positioning component includes a vertically arranged fixed pressure plate, and the plate surface of the fixed pressure plate is provided with a second port positioning boss and a shaft hole positioning boss for cooperating with the second port and shaft hole of the mounting seat of the housing. A movable pressure plate is provided on one side of the fixed pressure plate to cooperate with it, and the housing is clamped between the fixed pressure plate and the movable pressure plate.

[0012] A further improvement of this utility model is that the positioning component further includes a housing support platform disposed between the fixed pressure plate and the moving pressure plate. The upper end surface of the housing support platform is provided with a support surface that cooperates with the outer wall surface of the housing. A rotary pressing cylinder is provided on one side of the housing support platform, and a pressing block that cooperates with the housing placed on the housing support platform is provided on the working end of the rotary pressing cylinder.

[0013] A further improvement of this utility model is that the upper surface of the housing support is provided with a clearance groove for avoiding the reinforcing ribs on the outer wall of the housing.

[0014] A further improvement of this utility model is that the machine base is provided with a bushing opening support column, the upper end face of the bushing opening support column is in contact with the lower end face of the bushing opening of the housing, and a bushing clearance groove is provided on the upper end face of the bushing opening support column, the diameter of the bushing clearance groove being larger than the inner diameter of the bushing opening and smaller than its outer diameter.

[0015] A further improvement of this utility model is that the dynamic pressure plate includes a dynamic pressure plate body and a positioning cylinder for driving the dynamic pressure plate body close to the fixed pressure plate, and the surface of the dynamic pressure plate body is provided with a port positioning boss that cooperates with the first port of the housing.

[0016] A further improvement of this utility model is that the machine base is provided with a support, the driving component is a pressure cylinder mounted on the support, the telescopic end of the pressure cylinder is vertically downward and its lower end is connected to the pressing head.

[0017] A further improvement of this utility model is that the lower end face of the pressing head is provided with an annular groove, and the magnetic element is a permanent magnet ring located in the annular groove.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention uses a housing positioning mechanism and a bushing pressing mechanism to position the bushing, keeping the bushing opening axis of the housing vertical. The bushing is then pressed in by adsorbing it with a pressing head, eliminating the need for manual pre-pressing and preventing damage to the rubber layer caused by tilted pressing, thus improving the reliability of the steering gear housing.

[0020] In this invention, the fixed pressure plate is provided with a second port positioning boss and a shaft hole positioning boss, and the moving pressure plate clamps the shell to prevent the shell from rotating or shifting during pressing. In addition, the pressing pressure is dispersed by the design of the support surface of the shell support table fitting against the outer wall of the shell, which provides support for the shell and improves the stability of pressing.

[0021] This utility model uses a bushing support column to support the lower end face of the bushing opening. The diameter of the clearance groove is between the inner and outer diameters of the bushing opening. The support column provides vertical support force, and the clearance groove facilitates the avoidance of the protruding part when the bushing is fully pressed into the bushing opening, ensuring that the bushing is pressed in evenly.

[0022] In this invention, the lower end of the pressing head is provided with an annular groove, and a permanent magnet ring is built into the annular groove to attract the bushing. The bushing's own adsorption properties are used to position it, which reduces damage to the bushing compared to clamping the bushing and facilitates the placement and pressing of the bushing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the steering gear housing structure in the prior art.

[0024] Figure 2 This is a schematic diagram of a bushing structure in the prior art.

[0025] Figure 3 This is a schematic diagram of the structure of this utility model.

[0026] Figure 4 This is a schematic cross-sectional view of the bushing support column of this utility model.

[0027] Figure 5 This is a schematic cross-sectional view of the housing support of this utility model.

[0028] Figure 6 This is a partially enlarged schematic diagram of the housing positioning mechanism of this utility model.

[0029] Figure 7 This is a top view schematic diagram of the shell positioning mechanism structure of this utility model.

[0030] In the diagram, 1-machine platform, 2-housing placement platform, 3-press head, 4-driving component, 5-positioning column, 6-magnetic element, 7-fixed pressure plate, 8-second port positioning boss, 9-shaft hole positioning boss, 10-moving pressure plate, 11-housing support platform, 12-support surface, 13-rotary pressing cylinder, 14-pressure block, 15-bulb port support column, 16-bulb clearance groove, 17-moving pressure plate body, 18-positioning cylinder, 19-port positioning boss, 20-bracket, 21-clearance groove, 22-ring groove, 23-first port, 24-mounting base, 25-second port, 26-shaft hole, 27-bulb port, 28-metal column, 29-through port, 30-rubber layer, 31-bulb. Detailed Implementation

[0031] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1: Combination Figures 1-7 It is known that a car steering gear housing bushing assembly includes:

[0033] Machine 1;

[0034] A housing positioning mechanism is provided on the machine base 1, including a housing placement platform 2 and a positioning component. The positioning component is used to position the housing placed on the housing placement platform 2 so that the bushing opening axis of the housing remains vertical.

[0035] The bushing pressing mechanism is mounted on the machine base 1 and includes a pressing head 3, a driving component 4, and a positioning post 5. The pressing head 3 is located above the bushing opening and its axis is collinear with the axis of the bushing opening. The driving component 4 drives the pressing head 3 to press down. The positioning post 5 is located at the lower end of the pressing head 3. The outer diameter of the positioning post 5 is adapted to the inner diameter of the bushing. A magnetic element 6 is provided on the lower end face of the pressing head 3 for adsorbing the bushing.

[0036] The positioning assembly includes a vertically arranged pressure plate 7. The surface of the pressure plate 7 is provided with a second port positioning boss 8 and a shaft hole positioning boss 9 for cooperating with the second port and shaft hole of the mounting base of the housing. A dynamic pressure plate 10 is provided on one side of the pressure plate 7 to cooperate with it. The housing is clamped between the pressure plate 7 and the dynamic pressure plate 10.

[0037] The positioning assembly also includes a housing support platform 11 disposed between the fixed pressure plate 7 and the moving pressure plate 10. The upper end surface of the housing support platform 11 is provided with a support surface 12 that cooperates with the outer wall surface of the housing. A rotary pressing cylinder 13 is provided on one side of the housing support platform 11. The working end of the rotary pressing cylinder 13 is provided with a pressing block 14 that cooperates with the housing placed on the housing support platform 11.

[0038] The working end of the rotary pressing cylinder is vertically upward, with a horizontal pressure bar on top and a pressure block positioned on the lower end face of the pressure bar. The rotary pressing cylinder is a conventional cylinder in the prior art that combines rotary and linear motion functions. This type of cylinder can perform tasks such as workpiece clamping, positioning, or other actions requiring combined movements.

[0039] The upper surface of the housing support 11 is also provided with a clearance groove 21 for avoiding the reinforcing ribs on the outer wall of the housing.

[0040] The machine base 1 is equipped with a bushing opening support column 15. The upper end face of the bushing opening support column 15 contacts the lower end face of the bushing opening of the housing. A bushing clearance groove 16 is provided on the upper end face of the bushing opening support column 15. The diameter of the bushing clearance groove 16 is larger than the inner diameter of the bushing opening and smaller than its outer diameter. The bushing opening support column 15 provides a reverse support force to the bushing opening during pressing, making the pressing more stable.

[0041] The dynamic pressure plate 10 includes a dynamic pressure plate body 17 and a positioning cylinder 18 for driving the dynamic pressure plate body 17 closer to the fixed pressure plate 7. The surface of the dynamic pressure plate body 17 is provided with a port positioning boss 19 that mates with the first port of the housing. Preferably, a port support plate is vertically mounted on the housing placement platform 2 between the dynamic pressure plate 10 and the fixed pressure plate 7. The upper end of the port support plate has an arc surface that mates with the outer wall of the first port of the steering gear housing. This further improves the stability of the housing placement.

[0042] The machine base 1 is equipped with a support 20, and the driving component 4 is a pressure cylinder set on the support 20. The extension end of the pressure cylinder is vertically downward and its lower end is connected to the pressing head 3.

[0043] The existing steering gear housing has two bushing ports 27, and the pressure cylinder and pressure head 3 are also provided in two sets accordingly.

[0044] The lower end face of the pressing head 3 is provided with an annular groove 22, and the magnetic element 6 is a permanent magnet ring located in the annular groove 22. The metal pillar 28 of the existing bushing is made of ferromagnetic alloy, and preferably, the permanent magnet ring is a magnetic ring.

[0045] The working principle of the automotive steering gear housing bushing fitting device provided by the utility model is as follows: In use, the housing is first placed on the housing support 11. When adjusting its position, the second port 25 and shaft hole 26 of the mounting base 24 cooperate with the second port positioning boss 8 and shaft hole positioning boss 9 of the fixed pressure plate. Then, the housing is pressed by rotating the pressing cylinder 13. Then, the housing is clamped and positioned by the cooperation of the moving pressure plate 10 and the fixed pressure plate 7, so that the bushing opening is kept in a vertical position. The bushing is fitted onto the positioning post 5. The pressing head 3 achieves radial precision positioning by adsorbing the bushing through the permanent magnet ring 6. The pressing head 3 is driven by the pressing cylinder to press down along the vertical axis, pressing the bushing into the bushing opening. The pressing cylinder is reset. During this process, the squeezing force between the rubber layer 30 and the inner wall of the bushing opening 27 is greater than the adsorption force of the magnetic element 6 on the metal post 28. Therefore, the pressing head 3 separates from the bushing, completing the pressing of the bushing.

[0046] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "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 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. Any equivalent structural or procedural transformations made using the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A vehicle steering gear housing bushing assembly device, characterized in that, include: Machine (1); The housing positioning mechanism is provided on the machine base (1) and includes a housing placement platform (2) and a positioning component. The positioning component is used to position the housing placed on the housing placement platform (2) so that the bushing opening axis of the housing remains vertical. The bushing pressing mechanism is set on the machine base (1) and includes a pressing head (3), a driving component (4) and a positioning column (5). The pressing head (3) is located above the bushing opening and its axis is collinear with the axis of the bushing opening. The driving component (4) drives the pressing head (3) to press down. The positioning column (5) is set at the lower end of the pressing head (3). The outer diameter of the positioning column (5) is adapted to the inner diameter of the bushing. The lower end face of the pressing head (3) is provided with a magnetic element (6) for adsorbing the bushing.

2. The automotive steering gear housing bushing assembly device according to claim 1, characterized in that: The positioning component includes a vertically arranged pressure plate (7). The pressure plate (7) has a second port positioning boss (8) and a shaft hole positioning boss (9) for cooperating with the second port and shaft hole of the mounting base of the housing. A dynamic pressure plate (10) is provided on one side of the pressure plate (7) to cooperate with it. The housing is clamped between the pressure plate (7) and the dynamic pressure plate (10).

3. The automotive steering gear housing bushing assembly device according to claim 2, characterized in that: The positioning assembly also includes a housing support platform (11) disposed between the fixed pressure plate (7) and the moving pressure plate (10). The upper surface of the housing support platform (11) is provided with a support surface (12) that cooperates with the outer wall surface of the housing. A rotary pressing cylinder (13) is provided on one side of the housing support platform (11). The working end of the rotary pressing cylinder (13) is provided with a pressing block (14) that cooperates with the housing placed on the housing support platform (11).

4. The automotive steering gear housing bushing assembly device according to claim 3, characterized in that: The upper surface of the housing support (11) is also provided with a clearance groove (21) for avoiding the reinforcing ribs on the outer wall of the housing.

5. The automotive steering gear housing bushing assembly device according to claim 1, characterized in that: The machine base (1) is provided with a bushing opening support column (15). The upper end face of the bushing opening support column (15) is in contact with the lower end face of the bushing opening of the housing. The upper end face of the bushing opening support column (15) is provided with a bushing clearance groove (16). The diameter of the bushing clearance groove (16) is greater than the inner diameter of the bushing opening and smaller than its outer diameter.

6. The automotive steering gear housing bushing assembly device according to claim 2, characterized in that: The dynamic pressure plate (10) includes a dynamic pressure plate body (17) and a positioning cylinder (18) for driving the dynamic pressure plate body (17) close to the fixed pressure plate (7). The plate surface of the dynamic pressure plate body (17) is provided with a port positioning boss (19) that cooperates with the first port of the housing.

7. The automotive steering gear housing bushing assembly device according to claim 1, characterized in that: The machine base (1) is provided with a bracket (20), and the driving component (4) is a pressure cylinder set on the bracket (20). The telescopic end of the pressure cylinder is vertically downward and its lower end is connected to the pressing head (3).

8. The automotive steering gear housing bushing assembly device according to claim 1, characterized in that: The lower end face of the press head (3) is provided with an annular groove (22), and the magnetic element (6) is a permanent magnet ring located in the annular groove (22).

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