A press-fitting device for automotive steering knuckle bushings

Abstract

This utility model provides a pressing device for automotive steering knuckle bushings, relating to the field of steering knuckle bushing pressing technology. It includes a worktable, with a fixed frame fixedly connected to the upper surface of the worktable. A hydraulic cylinder is fixedly mounted on the fixed frame, and a pressing head is fixedly mounted on the output end of the hydraulic cylinder. An adjustment mechanism is provided on the worktable, and a clamping mechanism is provided on the adjustment mechanism. A measuring mechanism is provided inside the clamping mechanism. This utility model, through a threaded connection structure between a threaded rod and a lifting sleeve, allows for flexible adjustment of the threaded rod height to adapt to the measurement needs of steering knuckles of different specifications. It eliminates the need to replace measuring components, improving the device's versatility. Real-time detection by a displacement sensor and visual feedback from a display solve the problem of traditional pressing devices being unable to determine the pressing depth. It can accurately control the bushing pressing depth, avoiding bushing loosening due to insufficient pressing or damage to the steering knuckle due to excessive pressing.

Description

Technical Field

[0001] This utility model relates to the field of steering knuckle bushing press-fitting technology, and more specifically, to a press-fitting device for automotive steering knuckle bushings. Background Technology

[0002] The automotive steering knuckle is a key component connecting the wheel and the steering system. Multiple bushings need to be pressed onto its surface to reduce friction and absorb vibration during steering, ensuring that the vehicle can steer flexibly and stably. The quality of the bushing pressing directly affects the service life of the steering knuckle and driving safety. Therefore, a special pressing device is required to achieve precise assembly of the bushings and the steering knuckle.

[0003] In the prior art, patent CN223222801U discloses a pressing device for automotive steering knuckle bushings, including a pressing box and a support plate. A first support block is fixedly installed at the middle of the upper outer surface of the support plate, and a first telescopic rod sleeve is fixedly installed on the upper part of the first support block. Second support blocks are fixedly installed on the front and rear outer surfaces of the two first movable rods away from the first telescopic rod sleeve. Annular clamps are rotatably connected to the opposite ends of the two threaded rods. By rotating the two threaded rods on the left and right sides, the two annular clamps are moved to a predetermined position and firmly fixed to the automotive parts. When there are multiple steering knuckle bushings that need to be pressed inside a part, it is only necessary to continue moving the first movable rod to align the part to be pressed with the pressing head, thereby achieving precise positioning and pressing of the steering knuckle bushing according to the needs of different parts, improving pressing efficiency.

[0004] However, existing devices only determine whether the bushing is properly pressed by setting the cylinder stroke or manually observing the pressing position. They lack a real-time detection function for the bushing pressing depth, which can easily lead to problems such as the bushing not being pressed properly, causing it to loosen, or being pressed too deeply, damaging the steering knuckle. This results in low stability of the pressing quality. Utility Model Content

[0005] The main objective of this invention is to provide a press-fitting device for automotive steering knuckle bushings, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A pressing device for automotive steering knuckle bushings includes a worktable, a fixed frame fixedly connected to the upper surface of the worktable, a hydraulic cylinder fixedly mounted on the fixed frame, a pressing head fixedly mounted on the output end of the hydraulic cylinder, an adjustment mechanism provided on the worktable, a clamping mechanism provided on the adjustment mechanism, and a measuring mechanism provided inside the clamping mechanism.

[0007] Preferably, the adjustment mechanism includes a mounting frame, which is fixedly mounted on the upper surface of the workbench. A one-way lead screw is rotatably mounted inside the mounting frame. A motor is fixedly mounted at one end of the mounting frame, and the output end of the motor is fixedly connected to one end of the one-way lead screw.

[0008] Preferably, the unidirectional lead screw is threaded with a plurality of pressing platforms, the pressing platforms are slidably connected to the inner wall of the mounting frame, and a through hole is provided in the middle of the pressing platform.

[0009] Preferably, the clamping mechanism includes a fixed plate, which is fixedly installed on the pressing platform. A bidirectional lead screw is rotatably installed inside the fixed plate. A knob is fixedly connected to one end of the bidirectional lead screw, and a set of symmetrical clamping blocks are threaded onto the bidirectional lead screw.

[0010] Preferably, the end of the clamping block away from the bidirectional lead screw is slidably sleeved on the guide slide rod, and the guide slide rod is fixedly connected to the pressing platform.

[0011] Preferably, the measuring mechanism includes a fixed sleeve, which is fixedly installed in the through hole, and a lifting sleeve is slidably connected inside the fixed sleeve, with a threaded rod threadedly connected to the upper end of the lifting sleeve.

[0012] Preferably, a lifting block is fixedly sleeved on the lower end of the lifting sleeve, and the two sides of the lifting block are slidably sleeved on the guide rod. The guide rod is fixedly installed on the lower surface of the pressing platform, and a spring is installed on the guide rod. The upper end of the spring is fixedly connected to the lower surface of the lifting block.

[0013] Preferably, a displacement sensor is fixedly installed inside the lifting block, and a display is fixedly installed on one side of the upper surface of the pressing platform, and the display is electrically connected to the displacement sensor.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The car steering knuckle is clamped and fixed by the clamping mechanism, and the adjustment mechanism is used to make the pressing part correspond to the pressing joint position to ensure the accuracy of the pressing.

[0015] (2) The threaded connection structure between the threaded rod and the lifting sleeve allows for flexible adjustment of the threaded rod height to meet the measurement requirements of different specifications of steering knuckles without the need to replace the measuring components, thus improving the versatility of the device.

[0016] (3) By real-time detection of displacement sensor and visual feedback of display, the problem that traditional pressing device cannot judge pressing depth is solved. The pressing depth of bushing can be accurately controlled to avoid bushing loosening due to shallow pressing or steering knuckle damage due to excessive pressing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This utility model Figure 1 Enlarged view of the structure at point B in the middle; Figure 4 This utility model Figure 2 3D schematic diagram of the cross-sectional structure of the middle AA section; Figure 5 This utility model Figure 4 Enlarged view of the structure at point C; Figure 6 This is a three-dimensional schematic diagram of the bottom structure of the measuring mechanism in this utility model.

[0018] In the diagram: 1. Workbench; 2. Adjustment mechanism; 21. Mounting frame; 22. Motor; 23. One-way lead screw; 24. Crimping platform; 3. Clamping mechanism; 31. Fixing plate; 32. Two-way lead screw; 33. Knob; 34. Clamping block; 4. Measuring mechanism; 41. Lifting sleeve; 42. Threaded rod; 43. Lifting block; 44. Guide rod; 45. Spring; 46. Displacement sensor; 47. Fixing sleeve; 48. Display; 5. Hydraulic cylinder; 6. Pressing head; 7. Fixing frame. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] like Figure 1 , Figure 4 As shown in the figure, this utility model embodiment proposes a pressing device for automotive steering knuckle bushings, including a worktable 1, a fixed frame 7 fixedly connected to the upper surface of the worktable 1, a hydraulic cylinder 5 fixedly installed on the fixed frame 7, a pressing head 6 fixedly installed at the output end of the hydraulic cylinder 5, an adjustment mechanism 2 provided on the worktable 1, a clamping mechanism 3 provided on the adjustment mechanism 2, and a measuring mechanism 4 provided inside the clamping mechanism 3.

[0021] like Figures 1-3As shown, the adjustment mechanism 2 includes a mounting frame 21, which is fixedly mounted on the upper surface of the workbench 1. A one-way lead screw 23 is rotatably mounted inside the mounting frame 21. A motor 22 is fixedly mounted on one end of the mounting frame 21. The output end of the motor 22 is fixedly connected to one end of the one-way lead screw 23. Several pressing platforms 24 are threadedly connected to the one-way lead screw 23. The pressing platforms 24 are slidably connected to the inner wall of the mounting frame 21. A through hole is opened in the middle of the pressing platform 24.

[0022] In a specific setup, several pressing platforms 24 can be installed inside the mounting frame 21. Under the drive of the adjustment mechanism 2, the processing parts can be changed, thereby realizing the pressing of multiple automotive steering knuckle bushings. When adjusting the position of the pressing platform 24, the starting motor 22 drives the one-way screw 23 to rotate. Through the threaded engagement between the pressing platform 24 and the one-way screw 23 and the sliding engagement between the pressing platform 24 and the inner wall of the mounting frame 21, the pressing platform 24 moves along the one-way screw 23 and drives the automotive steering knuckle to move, so that the part to be processed corresponds to the position of the pressing head 6.

[0023] like Figure 1 , Figure 3 As shown, the clamping mechanism 3 includes a fixed plate 31, which is fixedly installed on the pressing platform 24. A bidirectional lead screw 32 is rotatably installed inside the fixed plate 31. A knob 33 is fixedly connected to one end of the bidirectional lead screw 32. A set of symmetrical clamping blocks 34 are threadedly connected to the bidirectional lead screw 32. The end of the clamping block 34 away from the bidirectional lead screw 32 is slidably sleeved on the guide slide rod, which is fixedly connected to the pressing platform 24.

[0024] Rotating the knob 33 can drive the bidirectional lead screw 32 to rotate, thereby bringing the two clamping blocks 34 closer together or further apart, thus clamping or releasing the steering knuckle. The guide slide can maintain the stability of the other side of the clamping block 34, ensuring that the clamping block 34 moves stably along the axial direction of the bidirectional lead screw 32 and the guide slide.

[0025] like Figure 1 , Figure 3 , Figure 5 , Figure 6 As shown, the measuring mechanism 4 includes a fixed sleeve 47, which is fixedly installed in the through hole. A lifting sleeve 41 is slidably connected inside the fixed sleeve 47. A threaded rod 42 is threadedly connected to the upper end of the lifting sleeve 41. A lifting block 43 is fixedly sleeved on the lower end of the lifting sleeve 41. The two sides of the lifting block 43 are slidably sleeved on the guide rod 44. The guide rod 44 is fixedly installed on the lower surface of the pressing platform 24. A spring 45 is installed on the guide rod 44. The upper end of the spring 45 is fixedly connected to the lower surface of the lifting block 43. A displacement sensor 46 is fixedly installed inside the lifting block 43. A display 48 is fixedly installed on one side of the upper surface of the pressing platform 24. The display 48 is electrically connected to the displacement sensor 46.

[0026] The outer wall of the threaded rod 42 is threadedly connected to the inner wall of the upper end of the lifting sleeve 41. When the threaded rod 42 is rotated, it can rise or fall axially along the lifting sleeve 41, thereby adjusting the height alignment between the upper end of the threaded rod 42 and the steering knuckle pressing part. When the heights of the steering knuckle pressing parts are different, the threaded rod 42 is rotated to make them adapt in real time. In the initial state, the spring 45 is in a naturally extended state, so that the upper surface of the lifting block 43 is in contact with the lower surface of the fixed sleeve 47. The displacement sensor 46 is fixed inside the lifting block 43, with its detection end facing the fixed sleeve. 47 is used to detect the distance change between the lifting block 43 and the fixed sleeve 47. The display 48 can display the value detected by the displacement sensor 46 in real time. When the bushing is pressed down by the press head 6, the bushing pushes the threaded rod 42 and the lifting sleeve 41 to move down synchronously. The lifting sleeve 41 pushes the lifting block 43 to move down along the guide rod 44 and compress the spring 45. At this time, a gap is generated between the lifting block 43 and the fixed sleeve 47. The displacement sensor 46 detects the change in this gap. This displacement is the depth of the bushing pressed into the steering knuckle and is displayed in real time by the display 48.

[0027] The threaded connection structure between the threaded rod 42 and the lifting sleeve 41 allows for flexible adjustment of the height of the threaded rod 42, adapting to the measurement needs of different specifications of steering knuckles without the need to replace measuring components, thus improving the versatility of the device. The real-time detection of the displacement sensor 46 and the visual feedback of the display 48 solve the problem that traditional pressing devices cannot determine the pressing depth, and can accurately control the bushing pressing depth, avoiding bushing loosening due to shallow pressing or damage to the steering knuckle due to excessive pressing.

[0028] The working principle of this automotive steering knuckle bushing press-fitting device: First, the automotive steering knuckle to be processed is placed between the two sets of clamping blocks 34 of the clamping mechanism 3. Rotating the knob 33 drives the bidirectional lead screw 32 to rotate. The bidirectional lead screw 32, through reverse thread transmission, causes the two sets of clamping blocks 34 to move closer together along the guide slide until the steering knuckle is firmly clamped. Then, the motor 22 is started to drive the unidirectional lead screw 23 to rotate, causing the pressing platform 24 to slide along the mounting bracket 21, thereby causing the clamping mechanism 3 and the steering knuckle to move horizontally, aligning the first part of the steering knuckle to be pressed with the bottom of the pressing head 6. Based on the height of this pressing part, the threaded rod 42 is rotated so that the upper end of the threaded rod 42 fits against the upper end of the pressing part of the steering knuckle. The hydraulic cylinder 5 is started to drive the pressing head 6 vertically downwards. The pressing head 6 pushes the bushing towards the pressing part of the steering knuckle. Under pressure, the bushing is gradually pressed into the steering knuckle mounting hole. Simultaneously, the bushing... The threaded rod 42 is pressed downwards, causing the lifting sleeve 41 to slide downwards along the fixed sleeve 47. The lifting sleeve 41 pushes the lifting block 43 downwards along the guide rod 44 and compresses the spring 45. At this time, a gap is generated between the lifting block 43 and the fixed sleeve 47. The displacement sensor 46 detects the change in this gap in real time and transmits the detection data to the display 48. The operator can monitor the pressing depth in real time through the display 48. When the pressing depth reaches the preset value, the hydraulic cylinder 5 is controlled to drive the pressing head 6 to rise and reset. If there are other parts of the steering knuckle that need to be pressed with bushings, the operation of the adjustment mechanism 2 is repeated to align the next pressing part with the pressing head 6. Pressing and depth detection are performed again until all bushings are pressed. Finally, the knob 33 is rotated in the opposite direction to release the clamping block 34 and the processed steering knuckle is taken out.

[0029] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A pressing device for automotive steering knuckle bushings, comprising a worktable (1), a fixing frame (7) fixedly connected to the upper surface of the worktable (1), a hydraulic cylinder (5) fixedly mounted on the fixing frame (7), and a pressing head (6) fixedly mounted on the output end of the hydraulic cylinder (5), characterized in that: The workbench (1) is provided with an adjustment mechanism (2), the adjustment mechanism (2) is provided with a clamping mechanism (3), and the clamping mechanism (3) is provided with a measuring mechanism (4).

2. The pressing device for an automotive steering knuckle bushing according to claim 1, characterized in that: The adjustment mechanism (2) includes a mounting frame (21), which is fixedly mounted on the upper surface of the workbench (1). A one-way lead screw (23) is rotatably mounted inside the mounting frame (21). A motor (22) is fixedly mounted on one end of the mounting frame (21), and the output end of the motor (22) is fixedly connected to one end of the one-way lead screw (23).

3. The pressing device for an automotive steering knuckle bushing according to claim 2, characterized in that: The unidirectional lead screw (23) is threaded with several pressing platforms (24), which are slidably connected to the inner wall of the mounting bracket (21). A through hole is provided in the middle of the pressing platform (24).

4. The pressing device for an automotive steering knuckle bushing according to claim 3, characterized in that: The clamping mechanism (3) includes a fixed plate (31), which is fixedly installed on the pressing platform (24). A bidirectional lead screw (32) is rotatably installed inside the fixed plate (31). A knob (33) is fixedly connected to one end of the bidirectional lead screw (32). A set of symmetrical clamping blocks (34) are threaded onto the bidirectional lead screw (32).

5. The pressing device for an automotive steering knuckle bushing according to claim 4, characterized in that: The end of the clamping block (34) away from the bidirectional lead screw (32) is slidably sleeved on the guide slide rod, which is fixedly connected to the pressing platform (24).

6. The pressing device for an automotive steering knuckle bushing according to claim 3, characterized in that: The measuring mechanism (4) includes a fixed sleeve (47), which is fixedly installed in the through hole. A lifting sleeve (41) is slidably connected inside the fixed sleeve (47), and a threaded rod (42) is threadedly connected to the upper end of the lifting sleeve (41).

7. The pressing device for an automotive steering knuckle bushing according to claim 6, characterized in that: The lower end of the lifting sleeve (41) is fixedly fitted with a lifting block (43). The lifting block (43) is slidably fitted on both sides of the guide rod (44). The guide rod (44) is fixedly installed on the lower surface of the pressing platform (24). A spring (45) is installed on the guide rod (44). The upper end of the spring (45) is fixedly connected to the lower surface of the lifting block (43).

8. The pressing device for an automotive steering knuckle bushing according to claim 7, characterized in that: A displacement sensor (46) is fixedly installed inside the lifting block (43), and a display (48) is fixedly installed on one side of the upper surface of the pressing platform (24). The display (48) is electrically connected to the displacement sensor (46).

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