Steering gear shaft support bearing press fitting and finishing device

Abstract

The utility model relates to a kind of steering gear gear shaft support bearing press-fit device, belong to steering gear support bearing assembly equipment technical field.The steering gear gear shaft support bearing press-fit and finishing device, including bottom plate, finishing shaft, press-fit pressure head, spring and fixed ring plate;The bottom plate is fixed with limit sleeve;The lower end of limit sleeve is fixed with fixed ring plate;The finishing shaft is fixed with finishing shaft on fixed ring plate by gasket and lock screw;Press-fit base is slidably equipped on finishing shaft;Spring is equipped on the finishing shaft below press-fit base;The finishing shaft upper end is slidably equipped with press-fit pressure head;The bottom plate of the both sides of limit sleeve is equipped with ejection push plate by finishing cylinder.The steering gear gear shaft support bearing press-fit and finishing device, compact structure, ingenious design, solve the problem that supporting bearing is easy to deform;It is especially suitable for the need of steering gear gear shaft support bearing assembly use.

Description

Technical Field

[0001] This utility model relates to a press-fitting device for a steering gear shaft support bearing, belonging to the technical field of steering gear support bearing assembly equipment. Background Technology

[0002] In the field of automotive steering system structure, the gear shaft is installed inside the automotive steering housing via a bottom ball bearing and a support bearing. The support bearing is formed by rolling thin copper plates, and the part that mates with the gear shaft is coated with a wear-resistant composite material to ensure rotational contact while ensuring low wear on the support bearing during gear shaft rotation.

[0003] Because the support bearing is made of thin-walled metal, the press-fitting process is affected by the fluctuation of the hole position tolerance of the support bearing in the housing. At the same time, the thin-walled rolled edge of the support bearing also has tolerance, and the mating position between the gear shaft and the inner hole of the support bearing also has tolerance. After press-fitting, the dimensions are affected by the cumulative tolerance and are extremely unstable. The following problems exist when installing the bottom ball bearing and the support bearing using the conventional press-fitting method.

[0004] First: After press fitting, the inner hole of the support bearing changes greatly due to tolerance. In particular, after the inner hole shrinks, the gear shaft cannot be installed when assembling the gear shaft. It is necessary to rework it off-line, using an expansion extrusion device to extrude and expand the support bearing to ensure that the gear shaft can be assembled smoothly. This results in a low assembly success rate.

[0005] Second: The existing press-fitting method cannot simultaneously assemble the bottom ball bearing and the support bearing, resulting in low assembly efficiency.

[0006] Therefore, it is necessary to develop a device for press-fitting and finishing steering gear shaft support bearings to solve the above-mentioned problems existing in the current method of press-fitting support bearings for automotive steering gears. Summary of the Invention

[0007] The purpose of this utility model is to provide a compact and ingeniously designed device for press-fitting and finishing steering gear shaft support bearings, which solves the problems of low success rate and low efficiency in existing automotive steering gear press-fitting support bearing methods.

[0008] The technical solution of this utility model is:

[0009] A device for press-fitting and finishing a steering gear shaft support bearing includes a base plate, a finishing shaft, a press-fitting head, a spring, and a fixing ring plate. The device is characterized in that: a limit sleeve is fixedly mounted on the base plate; a fixing ring plate is fixedly mounted on the lower end of the limit sleeve; a finishing shaft is fixedly mounted on the fixing ring plate via a washer and locking screws; a press-fitting base is slidably mounted on the finishing shaft; a spring is fitted onto the finishing shaft below the press-fitting base; a press-fitting head is slidably mounted on the upper end of the finishing shaft; and ejector plates are mounted on the base plate on both sides of the limit sleeve via finishing cylinders.

[0010] The finishing shaft has a stepped surface A at its upper end; a pressing head is slidably mounted on the stepped surface A; a limiting ring ridge is provided in the middle of the finishing shaft; a pressing base is slidably mounted on the finishing shaft below the limiting ring ridge.

[0011] The fixed ring plate has a stepped assembly hole in the middle; after the lower end of the finishing shaft is inserted into the stepped assembly hole, a washer is fixed to its bottom by a locking screw; the washer abuts against the stepped surface of the stepped assembly hole.

[0012] The press base has an integral structure; a support plate is provided in the middle of the press base; the press head has a stepped rotating structure.

[0013] The base plate outside the finishing cylinder is equipped with a protective cover; a solenoid valve and a three-way pipe are installed on the base plate on one side of the protective cover via a baffle; the solenoid valve is connected to the finishing cylinder via the three-way pipe; a combination switch is installed on the base plate on the other side of the protective cover via a button sheet metal; the combination switch is electrically connected to the solenoid valve.

[0014] The advantages of this utility model are:

[0015] This steering gear shaft support bearing press-fitting and finishing device is compact and ingeniously designed. It can simultaneously complete the assembly of the bottom ball bearing and the support bearing, and can also provide internal support for the support bearing through the finishing shaft, thereby solving the problem of easy deformation of the support bearing. It is particularly suitable for the needs of steering gear shaft support bearing assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the isometric structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model after removing the protective cover and baffle;

[0019] Figure 4 for Figure 3 Structural diagram;

[0020] Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure;

[0021] Figure 6 for Figure 5 A magnified structural diagram at point A;

[0022] Figure 7 This is a schematic diagram of the working structure of this utility model;

[0023] Figure 8 for Figure 7 Schematic diagram of the structure in the middle BB direction;

[0024] Figure 9 This is a schematic diagram of the finishing shaft of this utility model.

[0025] In the diagram: 1. Base plate; 2. Finishing shaft; 3. Press head; 4. Spring; 5. Washer; 6. Locking screw; 7. Limit sleeve; 8. Fixing ring plate; 9. Finishing cylinder; 10. Solenoid valve; 11. T-pipe; 12. Baffle; 13. Press base; 14. Button sheet metal; 15. Combination switch; 16. Protective cover; 17. Ejector plate; 18. Press part; 19. Support bearing; 20. Stepped assembly hole; 21. Limit ring ridge; 22. Support plate; 23. Bottom ball bearing; 24. Stepped surface A. Detailed Implementation

[0026] The steering gear shaft support bearing press-fitting and finishing device includes a base plate 1, a finishing shaft 2, a press-fitting head 3, a spring 4, and a fixing ring plate 8 (see the instruction manual appendix). Figure 1 , 2 and 3).

[0027] A limiting sleeve 7 is fixedly mounted on the base plate 1; a fixing ring plate 8 is fixedly mounted on the lower end of the limiting sleeve 7 (see the instruction manual appendix). Figure 2 , 3 and 6).

[0028] The finishing shaft 2 is fixedly mounted on the fixed ring plate 8 by a washer 5 and a locking screw 6 (see the instruction manual appendix). Figure 6 and 9 ).

[0029] The fixed ring plate 8 has a stepped mounting hole 20 in the middle (see the instruction manual appendix). Figure 6 After the lower end of the finishing shaft 2 is inserted into the stepped mounting hole 20, a washer 5 is fixed to its bottom by a locking screw 6; the washer 5 is in contact with the stepped surface of the stepped mounting hole 20.

[0030] The upper end of the finishing shaft 2 is provided with a stepped surface A24; a pressing head 3 is slidably mounted on the stepped surface A24 (see the instruction manual appendix). Figure 5 and 9 A limiting ring 21 is provided in the middle of the finishing shaft 2; a pressing base 13 is slidably mounted on the finishing shaft 2 below the limiting ring 21. The pressing base 13 has an integral structure; a support plate 22 is provided in the middle of the pressing base 13 (see the instruction manual appendix). Figure 3 During operation, the push plate 17 can be pushed upward by the support plate 22 to move the press base 13 upward.

[0031] A spring 4 is fitted on the finishing shaft 2 below the press-fit base 13 (see instruction manual). Figure 6 The press-fit base 13 always tends to move upward under the force of the spring 4. The limiting ring 21 serves to confine the spring 4 to the finishing shaft 2.

[0032] A pressing head 3 is slidably mounted on the upper end of the finishing shaft 2. The pressing head 3 has a stepped rotating structure (see the instruction manual appendix). Figure 3 ).

[0033] The bottom plates 1 on both sides of the limiting sleeve 7 are equipped with ejector plates 17 via finishing cylinders 9 (see instruction manual appendix). Figure 3 ).

[0034] A protective cover 16 is mounted on the base plate 1 outside the finishing cylinder 9; a solenoid valve 10 and a three-way pipe 11 are mounted on the base plate 1 on one side of the protective cover 16 via a baffle 12; the solenoid valve 10 is connected to the finishing cylinder 9 via the three-way pipe 11; a combination switch 15 is mounted on the base plate 1 on the other side of the protective cover 16 via a button sheet metal 14; the combination switch 15 is electrically connected to the solenoid valve 10 (see the attached instruction manual). Figure 1 ).

[0035] The steering gear shaft support bearing press-fitting and finishing device, during operation, assembles the support bearing 19 onto the finishing shaft 2's mounting position, the dimensions of which are the same as those of the currently used finishing tools. Then, the hand-operated oblique hole of the press-fitting part 18 is installed onto the finishing shaft 2, and the bottom ball bearing 23 is placed at the top mounting position of the finishing shaft 2. At this time, the press-fitting head 3 is placed on the end face of the bottom ball bearing 23, and the press-fitting head 3 is fitted into the top end of the finishing shaft 2.

[0036] After the above work is completed, the support bearing 19 is now in place. The external pressing equipment presses down on the pressing head 3, which in turn pushes the pressing parts 18 and the pressing base 13 downwards. When the pressing base 13 makes hard contact with the limiting ring 7, the bottom ball bearing 23 is pressed into place with the support bearing 19, and the spring 4 is compressed by the fixing ring plate 8 and the pressing base 13.

[0037] At this time, the pressing equipment remains in the pressing state without loosening, and the finishing position of the finishing shaft 2 continues to be located in the inner hole of the support bearing 19. The internal extrusion force of the support bearing 19 in the installation position of the pressing part 18 is absorbed by the finishing position of the finishing shaft 2, and no inner hole shrinkage deformation can occur.

[0038] After maintaining the pressure for 20 seconds, the combination switch 15, through the solenoid valve 10, diverts the flow at the three-way pipe 11 to the finishing cylinder 9, causing it to push out the ejector plate 17 and gradually contact the pressing base 13. At this time, the pressing base 13 is simultaneously subjected to the reaction forces of the spring 4 and the ejector plate 17 to overcome the frictional force of the support bearing 19 being deformed during pressing and gripping the finishing shaft 2. Simultaneously, the pressing equipment depressurizes and retracts.

[0039] When the pressing base 13 is not subjected to the pressure of the pressing head 3, it is simultaneously subjected to the reaction force of the spring 4 and the ejector plate 17. The pressing base 13 drives the pressing part 18 (the support bearing 19 has been pressed and finished into place, and is combined with the pressing part 18 as one unit) to exit from the finishing shaft 2 of the pressing and finishing device.

[0040] At this point, the automotive steering gear shaft support bearing press-fitting and finishing device has completed all the press-fitting and finishing assembly steps of the support bearing. After removing the part 18 installed on the press-fitting and finishing device and installing the new press-fitting part 18 and the new support bearing 19, the gear shaft support bearing press-fitting and finishing device can enter the next working cycle.

[0041] This steering gear shaft support bearing press-fitting and finishing device has a compact structure and ingenious design. It can simultaneously complete the assembly of the bottom ball bearing and the support bearing, and can also provide internal support for the support bearing through the finishing shaft 2, thereby solving the problem of easy deformation of the support bearing. It is particularly suitable for the needs of steering gear shaft support bearing assembly.

Claims

1. A device for press-fitting and finishing a steering gear shaft support bearing, comprising a base plate (1), a finishing shaft (2), a press-fitting head (3), a spring (4), and a fixing ring plate (8), characterized in that: A limiting sleeve (7) is fixedly mounted on the base plate (1); a fixing ring plate (8) is fixedly mounted on the lower end of the limiting sleeve (7); a finishing shaft (2) is fixedly mounted on the fixing ring plate (8) by means of a washer (5) and a locking screw (6); a pressing base (13) is slidably mounted on the finishing shaft (2); a spring (4) is fitted on the finishing shaft (2) below the pressing base (13); a pressing head (3) is slidably mounted on the upper end of the finishing shaft (2); and an ejector plate (17) is mounted on the base plate (1) on both sides of the limiting sleeve (7) by means of a finishing cylinder (9).

2. The device for press-fitting and finishing a steering gear shaft support bearing according to claim 1, characterized in that: The finishing shaft (2) is provided with a stepped surface A (24) at its upper end; a pressing head (3) is slidably mounted on the stepped surface A (24); a limiting ring ridge (21) is provided in the middle of the finishing shaft (2); a pressing base (13) is slidably mounted on the finishing shaft (2) below the limiting ring ridge (21).

3. The device for press-fitting and finishing a steering gear shaft support bearing according to claim 1, characterized in that: The fixed ring plate (8) is provided with a stepped assembly hole (20) in the middle; after the lower end of the finishing shaft (2) is inserted into the stepped assembly hole (20), a washer (5) is fixed at its bottom by a locking screw (6); the washer (5) is in contact with the stepped surface of the stepped assembly hole (20).

4. The device for press-fitting and finishing a steering gear shaft support bearing according to claim 1, characterized in that: The press base (13) is an integral structure; a support plate (22) is provided in the middle of the press base (13); the press head (3) is a stepped rotating body structure.

5. The device for press-fitting and finishing a steering gear shaft support bearing according to claim 1, characterized in that: A protective cover (16) is installed on the base plate (1) outside the finishing cylinder (9); a solenoid valve (10) and a three-way pipe (11) are installed on the base plate (1) on one side of the protective cover (16) through a baffle (12); the solenoid valve (10) is connected to the finishing cylinder (9) through the three-way pipe (11); a combination switch (15) is installed on the base plate (1) on the other side of the protective cover (16) through a button sheet metal (14); the combination switch (15) is electrically connected to the solenoid valve (10).

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