Novel press fitting tool for bushing of steering engine

Abstract

The utility model relates to the technical field of machinery, in particular to a novel steering gear bush press fitting tool which comprises a base, an air cylinder, a crank sliding block mechanism, a U-shaped profiling tool, a support, a press fitting head, a limiting block, a connecting plate and a guide rail. The crank sliding block mechanism is installed in the center of the top of the base, and the U-shaped profiling tool is fixed to the top of the base. The two sides of the top of the base are each provided with a set of guide rails, the first support and the second support are connected with the guide rails on the corresponding sides in a sliding mode, the opposite faces of the first support and the second support are each provided with a press fitting head and a limiting block, and the first support and the second support are connected through the crank sliding block mechanism. A piston rod of the cylinder is connected with the bottom of a connecting plate, and the top of the connecting plate is fixed to the first support. Compared with the prior art, the two supports are driven to move oppositely through the air cylinder and the slider-crank mechanism, the bushing is pre-pressed, the size of the pre-pressed bushing is smaller than that of a jaw of an auxiliary frame, and the bushing can be smoothly installed on the auxiliary frame.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, specifically a new type of steering gear bushing press-fitting tool. Background Technology

[0002] Currently, the installation method of EPS and vehicle subframe typically adopts EPS pressure rubber bushing design and vehicle subframe fixed size slot design.

[0003] The EPS mounting point rubber bushing needs to meet relatively stringent installation length requirements. These requirements can be guaranteed during initial press-fitting. However, due to the natural springback property of rubber after compression, dimensional deviations often occur during storage and transportation, leading to difficulties in vehicle installation. Furthermore, the use of hammering during vehicle installation due to these dimensional deviations carries the risk of damaging the EPS electronic components.

[0004] Therefore, a new type of steering gear bushing press-fitting tool needs to be designed to pre-press the bushing, reduce the bushing size, and facilitate the smooth assembly of the bushing on the vehicle subframe. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a new type of steering gear bushing press-fitting tool to pre-press the bushing, reduce the bushing size, and facilitate the smooth assembly of the bushing on the vehicle subframe.

[0006] To achieve the above objectives, this utility model provides a novel steering gear bushing press-fitting fixture, comprising a base, a cylinder, a crank-slider mechanism, a U-shaped contouring fixture, a bracket, a press-fitting head, a limiting block, a connecting plate, and guide rails. The crank-slider mechanism is mounted at the top center of the base. The U-shaped contouring fixture is fixed to the top of the base and positioned above the crank-slider mechanism. A set of guide rails is provided on both sides of the top of the base. Bracket 1 and Bracket 2 are slidably connected to the guide rails on their respective sides. A press-fitting head and a limiting block are provided on the opposite surfaces of Bracket 1 and Bracket 2. Bracket 1 and Bracket 2 are connected by a crank-slider mechanism. A cylinder is fixed to the bottom of the base, and the piston rod of the cylinder is connected to the bottom of the connecting plate. The top of the connecting plate is fixed to Bracket 1.

[0007] One end of the guide rail is located at the top edge of the base, and the other end of the guide rail extends toward the U-shaped contour tooling.

[0008] The U-shaped contouring tooling has a U-shaped contouring groove at the top center, which matches the external structure of the steering gear bushing mounting location.

[0009] The installation position of the pressing head matches the position of the U-shaped contour groove, and the installation positions of the two limiting blocks are located on the outside of the U-shaped contour tooling.

[0010] The crank-slider mechanism includes a crank, a connecting rod, and a slider. The middle part of the crank is rotatably mounted on the base. The two ends of the crank are respectively connected to the end of connecting rod one and the end of connecting rod two. The other end of connecting rod one is connected to slider one, which is mounted at the bottom of bracket one. The other end of connecting rod two is connected to slider two, which is mounted at the bottom of bracket two.

[0011] The crank and the base, the crank and connecting rod one, the crank and connecting rod two, connecting rod one and slider one, and connecting rod two and slider two are connected by a rotating shaft.

[0012] The base has a vertically mounted cylinder fixing plate at its bottom, and the cylinder is fixed to the side of the cylinder fixing plate.

[0013] The bottom of bracket one and bracket two are respectively equipped with sliders, which are slidably connected to the guide rail.

[0014] The connecting plate is located within a notch on the surface of the base.

[0015] Compared with the prior art, this invention uses a cylinder and crank-slider mechanism to drive two supports to move in opposite directions, thereby achieving pre-compression of the bushing. The pre-compressed bushing is smaller than the size of the subframe's opening, allowing it to be easily installed onto the subframe. This invention has the advantages of high efficiency, accuracy, good consistency, and simple operation. 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 two supports of this utility model moving towards the U-shaped conforming tool.

[0018] Figure 3 This is a schematic diagram of the two supports of this utility model being positioned away from the U-shaped conforming tooling.

[0019] Figure 4 for Figure 2 AA sectional view.

[0020] Figure 5 for Figure 3 BB cross-sectional view.

[0021] Figure 6 This is a schematic diagram showing the usage state of this utility model. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] See Figure 1This utility model is a novel steering gear bushing press-fitting fixture, including a base, a cylinder, a crank-slider mechanism, a U-shaped contouring fixture, a bracket, a press-fitting head, a limiting block, a connecting plate, and a guide rail. The crank-slider mechanism 2 is installed at the top center of the base 6. The U-shaped contouring fixture 4 is fixed on the top of the base 6 and is mounted above the crank-slider mechanism 2. A set of guide rails 7 are provided on both sides of the top of the base 6. Bracket 1 31 and bracket 2 32 are slidably connected to the guide rails 7 on the corresponding sides. Press-fitting heads 5 and limiting blocks 10 are provided on the opposite surfaces of bracket 1 31 and bracket 2 32. Bracket 1 31 and bracket 2 32 are connected by the crank-slider mechanism 2. A cylinder 1 is fixed at the bottom of the base 6. The piston rod 11 of the cylinder 1 is connected to the bottom of the connecting plate 12. The top of the connecting plate 12 is fixed to bracket 1 31.

[0024] One end of the guide rail 7 is located at the top edge of the base 6, and the other end of the guide rail 7 extends toward the U-shaped contour tooling 4.

[0025] The top center of the U-shaped contour tool 4 has a U-shaped contour groove, which matches the shape and structure of the steering gear bushing mounting location.

[0026] The installation position of the pressing head 5 matches the position of the U-shaped contour groove to ensure that the pressing head 5 can pre-press the bushing of the steering gear placed in the U-shaped contour groove; the installation positions of the two limiting blocks 10 are located on the outside of the U-shaped contour tooling 4 to avoid interference between the limiting blocks 10 and the U-shaped contour tooling 4 during the movement of the bracket 1 31 and the bracket 2 32.

[0027] The crank-slider mechanism 3 includes a crank, a connecting rod, and a slider. The middle part of the crank 21 is rotatably mounted on the base 6. The two ends of the crank 21 are respectively connected to the ends of connecting rod 1 22 and connecting rod 23. The other end of connecting rod 1 22 is connected to slider 1, which is mounted on the bottom of bracket 1 31. The other end of connecting rod 23 is connected to slider 2, which is mounted on the bottom of bracket 2 32. The crank 21 and the base 6, the crank 21 and connecting rod 1 22, the crank 21 and connecting rod 23, the connecting rod 1 22 and slider 1, and the connecting rod 23 and slider 2 are connected by rotating shafts.

[0028] For ease of installation, a vertically mounted cylinder fixing plate 8 is installed at the bottom of the base 6, and the cylinder 1 is fixed to the side of the cylinder fixing plate 8.

[0029] Slider 9 is mounted on the bottom of bracket 1 31 and bracket 2 32 respectively. Slider 9 is slidably connected to guide rail 7 so that bracket 1 31 and bracket 2 32 can move better.

[0030] The connecting plate 12 is located within a notch on the surface of the base 6 to avoid interference between the connecting plate 12 and the base 6 during the operation of the cylinder 1.

[0031] In this invention, cylinder 1 serves as the power source, providing driving force for bidirectional motion. The crank-slider mechanism 3, in conjunction with two symmetrically arranged pressing heads 5 on bracket 1 31 and bracket 2 32, is used for synchronous compression of the bushing. Guide rail 7 ensures smooth and precise movement of bracket 1 31 and bracket 2 32. Limiting block 10 limits the stroke of the pressing head 5 to prevent over-pressing of the bushing.

[0032] See Figure 6 Because bushings are provided at both ends of the steering gear, two pressing fixtures 13 are required during pre-pressing. The worker places the steering gear on the U-shaped contour fixture 4, starts the pressing fixture, and the piston rod of cylinder 1 retracts, causing bracket 1 31 to move towards the U-shaped contour fixture 4. The crank-slider mechanism 2 retracts, causing bracket 2 32 to move towards the U-shaped contour fixture 4. Figure 2 , Figure 4 As shown. After the pressing head 5 contacts the bushing, it continues to apply pressure, causing the bushing to undergo elastic deformation. Then, after the pressing head 5 maintains pressure on the bushing according to the preset pressure and time, the piston rod of cylinder 1 extends, driving bracket 31 to return to its original position away from the U-shaped contouring fixture 4. The crank-slider mechanism 2 extends, driving bracket 32 ​​to return to its original position away from the U-shaped contouring fixture 4, as shown. Figure 3 , Figure 5 As shown. After pressing is completed, the worker removes the steering gear. This utility model is easy to operate, and the pressing process reduces manual intervention.

[0033] This invention achieves bidirectional pre-compression through a cylinder, significantly improving production efficiency and ensuring consistency in pressure and depth for each pressing operation; the limiting block effectively prevents excessive pre-compression of the bushing, ensuring pressing accuracy and improving product quality.

[0034] This invention uses a cylinder and crank-slider mechanism to drive two supports to move in opposite directions, thereby achieving pre-compression of the bushing. The pre-compressed bushing is smaller than the size of the subframe's opening, allowing it to be easily installed onto the subframe. This invention has the advantages of high efficiency, accuracy, good consistency, and simple operation.

Claims

1. A novel steering machine bushing press-fitting tool, comprising a base, a gas cylinder, a crank slider mechanism, a U-shaped profiling tool, a support, a press-fitting head, a limit block, a connecting plate, a guide rail, characterized in that: The top center of the base (6) is provided with a crank slider mechanism (2), a U-shaped profiling tool (4) is fixed on the top of the base (6) and arranged above the crank slider mechanism (2), both sides of the top of the base (6) are respectively provided with a set of guide rails (7), a support one (31) and a support two (32) are respectively slidably connected with the guide rails (7) on the corresponding side, the opposite sides of the support one (31) and the support two (32) are respectively provided with a press fitting head (5) and a limiting block (10), the support one (31) and the support two (32) are connected by the crank slider mechanism (2), the bottom of the base (6) is fixed with a pneumatic cylinder (1), the piston rod (11) of the pneumatic cylinder (1) is connected with the bottom of a connecting plate (12), and the top of the connecting plate (12) is fixed with the support one (31).

2. A novel steering gear bush press fitting tool according to claim 1, characterized in that: One end of the guide rail (7) is located at the top edge of the base (6), and the other end of the guide rail (7) extends to the direction of the U-shaped profiling tool (4).

3. A novel steering gear bush press fitting tool according to claim 1, characterized in that: The top center of the U-shaped profiling tool (4) is provided with a U-shaped profiling groove, and the U-shaped profiling groove matches the outer shape structure of the installation position of the steering machine bushing.

4. A novel steering gear bush press fitting tool according to claim 3, characterized in that: The installation position of the press fitting head (5) matches the position of the U-shaped profiling groove, and the installation positions of the two limiting blocks (10) are located outside the U-shaped profiling tool (4).

5. A novel steering gear bush press fitting tool according to claim 1, characterized in that: The crank slider mechanism (2) comprises a crank, a connecting rod and a slider, the middle part of the crank (21) is rotatably installed on the base (6), both ends of the crank (21) are respectively connected with the end part of the connecting rod one (22) and the end part of the connecting rod two (23), the other end part of the connecting rod one (22) is connected with the slider one, the slider one is installed on the bottom of the support one (31), the other end part of the connecting rod two (23) is connected with the slider two, and the slider two is installed on the bottom of the support two (32).

6. A novel steering gear bush press fitting tool according to claim 5, characterized in that: The crank (21) and the base (6), the crank (21) and the connecting rod one (22), the crank (21) and the connecting rod two (23), the connecting rod one (22) and the slider one, and the connecting rod two (23) and the slider two are connected by a rotating shaft.

7. A novel steering gear bush press fitting tool according to claim 1, characterized in that: The bottom of the base (6) is provided with a vertically arranged pneumatic cylinder fixing plate (8), and the pneumatic cylinder (1) is fixed on the side surface of the pneumatic cylinder fixing plate (8).

8. A novel steering gear bush press fitting tool according to claim 1, characterized in that: The bottom of the support one (31) and the bottom of the support two (32) are respectively provided with a slider (9), and the slider (9) is slidably connected with the guide rail (7).

9. A novel steering gear bush press fitting tool according to claim 1, characterized in that: The connecting plate (12) is located in the notch on the surface of the base (6).

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