A bearing assembly device for a steering gear housing

Abstract

The utility model discloses a kind of automobile steering gear housing bearing assembly devices, including machine table, shell positioning mechanism and bearing assembly mechanism are equipped on the machine table, the shell positioning mechanism includes shell placement table, the bearing assembly mechanism includes the transverse movement seat being arranged in the both sides of shell placement table, two transverse movement seats are coaxially arranged and are provided with pressure head, the shell placement table is equipped with the positioning assembly matched with shell structure, the axis of the input shaft shell of shell is coaxial with the axis of two pressure heads by positioning assembly. The utility model can install bearing to the input shaft shell both ends of steering gear housing, and it is strong in adaptability, and installation precision and efficiency are high.

Description

Technical Field

[0001] This utility model relates to the field of steering gear manufacturing technology, specifically to an assembly device for a bearing housing of an automotive steering gear. 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 includes a rack housing 24 and an input shaft housing 23. The rack housing 24 is longer and is used to accommodate the rack. It is provided with an ear hole 26, an interface 27 and a mounting base 29. The input shaft housing 23 is shorter and is used to accommodate the steering shaft. Its shorter tubular structure intersects the rack housing 24 at a certain angle.

[0004] In the production process of automotive steering gear, bearings need to be installed in the bearing mounting ports 25 at both ends of the input shaft housing 23. Existing bearing press-in technology mainly uses a vertical pressing method to press the bearings in. However, the angle formed by the input shaft housing and the rack housing makes it difficult to use existing vertical press-fitting equipment. As a result, the bearing installation path and the axis of the input shaft housing often cannot be aligned coaxially, resulting in very low installation efficiency and making it unsuitable for the structure of the steering gear housing. Utility Model Content

[0005] The purpose of this utility model is to provide an automotive steering gear housing bearing assembly device, which can install bearings at both ends of the input shaft housing of the steering gear housing, with strong adaptability, high installation accuracy and efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an automotive steering gear housing bearing assembly device, comprising a machine base, wherein the machine base is provided with a housing positioning mechanism and a bearing assembly mechanism, the housing positioning mechanism includes a housing placement platform, and the bearing assembly mechanism includes transverse moving seats disposed on both sides of the housing placement platform, with pressure heads coaxially and oppositely disposed on the two transverse moving seats, and a positioning component that cooperates with the housing structure is provided on the housing placement platform, thereby making the input shaft of the housing and the axis of the housing coaxial with the axes of the two pressure heads through the positioning component.

[0007] A further improvement of this utility model is that the diameters of the two pressure heads are respectively adapted to the diameter of the bearing mounting port of their corresponding input shaft housing, and the end of each pressure head is coaxially provided with a bearing placement shaft, the diameter of which is adapted to the inner diameter of its corresponding bearing.

[0008] A further improvement of this utility model is that the positioning component includes a first positioning post, a second positioning post, a third positioning post, a port support block, and a rotary pressing cylinder disposed on the housing placement platform. The upper ends of the first and second positioning posts are provided with ear hole positioning protrusions that engage with two ear holes on the rack housing. The third positioning post is provided with an interface positioning protrusion that engages with an interface on the rack housing. The port support block is provided with an arc-shaped slot that mates with the outer wall of the port of the rack housing. The telescopic end of the rotary pressing cylinder is provided with a pressure strip that can abut against the housing.

[0009] A further improvement of this utility model is that the positioning component includes a fixed cylinder disposed on one side of the housing placement platform, the axis of the telescopic end of the fixed cylinder is coaxial with the axis of the positioned rack housing, and the telescopic end of the fixed cylinder is provided with a pressure plate that can abut against the end face of the mounting seat of the housing.

[0010] A further improvement of this utility model is that the pressure plate is provided with a communication port positioning boss and a shaft hole positioning boss for cooperating with the communication port and shaft hole of the mounting seat of the housing.

[0011] A further improvement of this utility model is that the transverse moving seat includes a slide rail arranged along the width direction of the housing placement platform and an electric lead screw located between the two slide rails. The nut seat of the electric lead screw is provided with a slide block slidably connected to the slide rail, and the pressure head is arranged on the slide block.

[0012] A further improvement of this utility model is that the lower end of the pressure strip is provided with an elastic abutment.

[0013] A further improvement of this utility model is that a limiting ring is coaxially fixedly sleeved on the pressure head to limit excessive compression.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model uses a housing positioning mechanism and a bearing assembly mechanism to position the housing, making the axis of the input shaft housing coaxial with the axes of the two pressure heads. Then, the bearings are press-fitted by the pressure heads on both sides. It has strong compatibility with the steering gear housing and high installation accuracy and efficiency.

[0016] The end of the press head of this utility model is coaxially provided with a bearing placement shaft. The diameter of the bearing placement shaft is adapted to the inner diameter of the corresponding bearing. During press-fitting, the bearing can be sleeved on the bearing placement shaft, and then the transverse moving seat is activated so that the press head presses the bearing into the bearing mounting port. The installation speed is fast and the stability is strong.

[0017] This utility model uses a first positioning post, a second positioning post, a third positioning post, a port support block, and a rotary pressing cylinder to adaptively position the steering gear housing according to its own structure. The positioning effect is good and the stability is high. Furthermore, the fixing cylinder further improves the stability of the fixing.

[0018] This invention allows for two-stage pressing of the bearing during installation. While one pressing head is in operation, the other pressing head, though not pressing, can still be inserted into the bearing mounting port on the other side of the housing. The limiting ring contacts the housing to provide a support point, making the pressing of the bearing on the other side more stable. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the steering gear housing structure in the prior art.

[0020] Figure 2 This is a schematic diagram of the structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the housing placement platform of this utility model (the steering gear housing has been placed in the figure).

[0022] Figure 4 This is a partially enlarged schematic diagram of the structure of the housing placement platform of this utility model.

[0023] Figure 5 This is a partially enlarged schematic diagram of the structure of the housing fixing cylinder of this utility model.

[0024] Figure 6 This is a schematic diagram of the transverse moving seat structure of this utility model.

[0025] Figure 7 This is a cross-sectional schematic diagram showing the positional relationship between the pressure head and the bearing mounting port of this utility model.

[0026] In the diagram, 1-machine base, 2-housing platform, 3-lateral moving seat, 4-pressure head, 5-bearing placement shaft, 6-first positioning post, 7-second positioning post, 8-third positioning post, 9-port support block, 10-rotating pressing cylinder, 11-ear hole positioning protrusion, 12-interface positioning protrusion, 13-arc-shaped bayonet, 14-pressure strip, 15-fixing cylinder, 16-pressure plate, 17-port positioning boss, 18-shaft hole positioning boss, 19-slide rail, 20-slide seat, 21-elastic stop block, 22-limiting ring, 23-input shaft housing, 24-rack housing, 25-bearing mounting port, 26-ear hole, 27-interface, 28-port of rack housing, 29-mounting seat, 30-connecting port, 31-shaft hole, 32-electric lead screw, 33-bearing. Detailed Implementation

[0027] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1: Combination Figures 1-7 It is known that an automotive steering gear housing bearing assembly device includes a machine base 1, on which a housing positioning mechanism and a bearing assembly mechanism are provided. The housing positioning mechanism includes a housing placement platform 2, and the bearing assembly mechanism includes transverse moving seats 3 arranged on both sides of the housing placement platform 2. Pressure heads 4 are coaxially arranged opposite each other on the two transverse moving seats 3. The housing placement platform 2 is provided with a positioning component that cooperates with the housing structure. The positioning component makes the axis of the housing input shaft coaxial with the axis of the two pressure heads 4.

[0029] The diameters of the two pressure heads 4 are respectively adapted to the diameter of the bearing mounting port of their corresponding input shaft housing. A bearing placement shaft 5 is coaxially provided at the end of the pressure head 4, and the diameter of the bearing placement shaft 5 is adapted to the inner diameter of its corresponding bearing. The bearing placement shaft 5 and the pressure head 4 are integrated into one piece.

[0030] On the existing steering gear housing input shaft housing 23, there are two bearing mounting ports 25 with different diameters at both ends. The bearings in the two bearing mounting ports 25 also have different diameters, but they are still coaxially arranged. The two pressure heads 4 also have two diameter specifications.

[0031] The positioning assembly includes a first positioning post 6, a second positioning post 7, a third positioning post 8, a port support block 9, and a rotary pressing cylinder 10, all mounted on the housing platform 2. The upper ends of the first positioning post 6 and the second positioning post 7 are each provided with ear hole positioning protrusions 11 that engage with two ear holes on the rack housing. The third positioning post 8 is provided with an interface positioning protrusion 12 that engages with an interface on the rack housing. The port support block 9 is provided with an arc-shaped latch 13 that mates with the outer wall of the port of the rack housing. A pressure strip 14, capable of abutting against the housing, is horizontally provided on the telescopic end of the rotary pressing cylinder 10. Preferably, the lower end of the pressure strip 14 is provided with an elastic abutment 21.

[0032] One end of the rack housing 24 is provided with a rack housing port 28, and the other end is provided with a mounting base 29. The mounting base 29 is provided with a communication port 30 that communicates with the inner cavity of the rack housing 24. During positioning, the axes of the two ear holes 26 and the interface 27 are all in the vertical direction.

[0033] The positioning assembly includes a fixing cylinder 15 disposed on one side of the housing placement platform 2. The axis of the telescopic end of the fixing cylinder 15 is coaxial with the axis of the positioned rack housing. The telescopic end of the fixing cylinder 15 is provided with a pressure plate 16 that can abut against the end face of the mounting seat of the housing. Preferably, the fixing cylinder 15 is disposed on a horizontal mounting plate, and a pressure plate slide rail is provided on the mounting plate along the telescopic direction of the fixing cylinder. The pressure plate 16 is slidably connected to the pressure plate slide rail.

[0034] The pressure plate 16 is provided with a communication port positioning boss 17 and a shaft hole positioning boss 18 for cooperating with the communication port and shaft hole of the mounting base of the housing.

[0035] The transverse moving seat 3 includes a slide rail 19 arranged along the width direction of the housing platform and an electric lead screw 32 located between the two slide rails 19. The nut seat of the electric lead screw 32 is provided with a slide block 20 slidably connected to the slide rail 19, and the pressure head 4 is arranged on the slide block 20.

[0036] A limiting ring 22 is coaxially fixed on the pressure head 4 to limit excessive compression. The diameter of the limiting ring 22 is larger than the diameter of the bearing mounting opening. When one side of the pressure head 4 is pressing the bearing in, the limiting ring 22 on the other side of the pressure head 4 can also abut against the housing to support it.

[0037] The working principle of the automotive steering gear housing bearing assembly device provided by the utility model is as follows:

[0038] When in use, the steering gear housing is placed on the housing placement platform 2. The rack housing port 28 on the steering gear housing is engaged with the arc-shaped bayonet on the port support block 9, the two ear holes on the steering gear housing are engaged with the first positioning post 6 and the second positioning post 7, and the interface 27 on the steering gear housing is engaged with the third positioning post 8 to complete the horizontal positioning of the housing, so that the axis of the input shaft housing 23 is coaxial with the axis of the two pressure heads 4.

[0039] Then, the rotary pressing cylinder 10 is activated so that the pressure bar 14 rotates to the appropriate position and presses down to fix the steering gear housing. Then, the fixing cylinder 15 is activated, and the mounting base 29 is further fixed by the pressure plate, thus completing the stable fixing of the steering gear housing.

[0040] Place a bearing on the bearing placement shaft 5 of one of the pressure heads 4. First, move the other pressure head 4 without a bearing so that it abuts against one side of the input shaft housing 23 to provide a new support point. Then, move the pressure head 4 with the bearing so that it abuts into the port on the other side of the input shaft housing 23 until the bearing on it is pressed into the bearing mounting port 25. Then, reset the other pressure head 4, put on the bearing again, and press the bearing into the bearing mounting port on that side to complete the bearing installation of the input shaft housing 23.

[0041] 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 bearing assembly device for an automotive steering gear housing, characterized in that: The machine includes a machine base (1), on which a housing positioning mechanism and a bearing assembly mechanism are provided. The housing positioning mechanism includes a housing placement platform (2), and the bearing assembly mechanism includes transverse moving seats (3) arranged on both sides of the housing placement platform (2). Pressure heads (4) are coaxially arranged opposite each other on the two transverse moving seats (3). The housing placement platform (2) is provided with a positioning component that cooperates with the housing structure. The positioning component makes the axis of the housing input shaft coaxial with the axis of the two pressure heads (4).

2. The automotive steering gear housing bearing assembly device according to claim 1, characterized in that: The diameters of the two pressure heads (4) are respectively matched with the diameter of the bearing mounting port of the corresponding input shaft housing. The end of the pressure head (4) is coaxially provided with a bearing placement shaft (5), and the diameter of the bearing placement shaft (5) is matched with the inner diameter of the corresponding bearing.

3. The automotive steering gear housing bearing assembly device according to claim 1, characterized in that: The positioning assembly includes a first positioning post (6), a second positioning post (7), a third positioning post (8), a port support block (9), and a rotary pressing cylinder (10) disposed on the housing placement platform (2). The upper ends of the first positioning post (6) and the second positioning post (7) are provided with ear hole positioning protrusions (11) that engage with the two ear holes on the rack housing. The third positioning post (8) is provided with an interface positioning protrusion (12) that engages with the interface on the rack housing. The port support block (9) is provided with an arc-shaped bayonet (13) that cooperates with the outer wall of the port of the rack housing. The telescopic end of the rotary pressing cylinder (10) is provided with a pressure strip (14) that can abut against the housing.

4. A bearing assembly device for an automotive steering gear housing according to claim 1 or 3, characterized in that: The positioning component includes a fixed cylinder (15) disposed on one side of the housing placement platform (2). The axis of the telescopic end of the fixed cylinder (15) is coaxial with the axis of the rack housing after positioning. The telescopic end of the fixed cylinder (15) is provided with a pressure plate (16) that can abut against the mounting end face of the housing.

5. The automotive steering gear housing bearing assembly device according to claim 4, characterized in that: The pressure plate (16) is provided with a communication port positioning boss (17) and a shaft hole positioning boss (18) for cooperating with the communication port and shaft hole of the mounting base of the housing.

6. The automotive steering gear housing bearing assembly device according to claim 1, characterized in that: The transverse moving seat (3) includes a slide rail (19) arranged along the width direction of the housing placement platform and an electric lead screw (32) located between the two slide rails (19). The nut seat of the electric lead screw (32) is provided with a slide block (20) slidably connected to the slide rail (19). The pressure head (4) is arranged on the slide block (20).

7. The automotive steering gear housing bearing assembly device according to claim 3, characterized in that: The lower end of the pressure strip (14) is provided with an elastic abutment (21).

8. A bearing assembly device for an automotive steering gear housing according to claim 1 or 2, characterized in that: The pressure head (4) is coaxially fixed with a limiting ring (22) to restrict excessive compression.

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