Knuckle opening bushing press-fitting device

Abstract

The utility model discloses a steering knuckle opening bushing press-fitting device which comprises a support and is characterized in that the support comprises a pressure applying mechanism which comprises a pressing rod and a pressing head, the pressing head is arranged on the outer side of the pressing rod in a sleeved mode, and the pressing head is used for being sleeved with an opening bushing; the positioning mechanism comprises a clamp and a positioning block, the clamp is provided with a clamping hole, and the positioning block is fixedly installed on the clamp; the pressing rod is used for driving the pressing head to move so that the opening lining arranged on the pressing head in a sleeving mode can enter the clamping hole, the positioning block is used for stretching into the opening position of the opening lining, the clamp is used for adjusting the hole diameter of the clamping hole so as to adjust the outer diameter of the opening lining, and the pressing head moves relative to the pressing rod so that the opening lining can be pushed into a lining hole of the steering knuckle. According to the mounting device, accurate positioning of the mounting position of the opening lining is achieved, the mounting quality can be improved, and the mounting efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to an assembly device for automotive parts, and in particular to a steering knuckle open bushing press-fit device. Background Technology

[0002] The steering knuckle, also known as the "steering horn," is a crucial component of the automotive steering axle, enabling stable vehicle movement and responsive directional transmission. Its function is to transmit and bear the load from the front of the vehicle, supporting and driving the front wheels to rotate around the kingpin, thus steering the car. During vehicle operation, the vehicle often experiences high-frequency impact loads. Bushings within the steering knuckle provide excellent shock absorption and cushioning. Furthermore, the tension within the bushing bore of the open bushing increases the bushing's connection strength, preventing displacement and enhancing driving stability and safety.

[0003] The automotive steering knuckle bushing is a key component installed inside the steering knuckle bushing bore, playing a role in shock absorption, cushioning, and positioning. The bushing structure is divided into open bushings and non-open bushings. Before being pressed into the steering knuckle bushing bore, the open bushing needs to be pre-compressed and tightened to the appropriate size before being pressed into the bushing bore. The position of the bushing opening tightening is required. If it cannot be accurately positioned during the bushing pressing process, it will not only affect the performance and service life of the steering knuckle, but may even lead to damage to the bushing and steering knuckle, resulting in cost losses. Utility Model Content

[0004] This application provides a steering knuckle open bushing press-fitting device, including a bracket, on which are provided:

[0005] The pressure applying mechanism includes a pressure rod and a pressure head, wherein the pressure head is sleeved on the outside of the pressure rod for fitting an open bushing; the pressure rod moves vertically under the drive of a lifting mechanism;

[0006] The positioning mechanism, located below the pressure applying mechanism, includes a clamp and a clamping positioning seat. The clamp has a clamping hole for clamping an open bushing, and the clamping hole is coaxially arranged with the pressure rod. The clamping positioning seat is located below the clamp and is coaxially arranged with the clamping hole of the clamp.

[0007] And a support mechanism for positioning the steering knuckle.

[0008] Furthermore, the support mechanism includes multiple side plates on the bracket and a support rod rotatably connected to the steering knuckle.

[0009] Furthermore, the fixture is provided with a positioning block on the side of the clamping hole, and the positioning block is positioned by contacting the side of the opening bushing.

[0010] Furthermore, the positioning block is provided with a wedge block at the opening position of the opening bushing.

[0011] Further, the end of the pressing rod is provided with a plunger extending from the middle of the pressing head, and the plunger is coaxially arranged with the pressing rod.

[0012] Further, the lifting mechanism is a nitrogen spring fixed on the support.

[0013] Further, the lifting mechanism further comprises a slide rail vertically arranged on the support, and the pressing rod is slidably connected to the slide rail through a lifting plate.

[0014] Further, the clamp comprises a fixed plate and a moving plate oppositely arranged, the moving plate is fixedly connected to a transverse output end of a lead screw transmission structure, and the fixed plate is movably connected to the transverse output end of the lead screw transmission structure.

[0015] Further, the lead screw transmission structure comprises a lead screw, a sliding block threadedly matched with the lead screw, and a servo motor for driving the lead screw to rotate, a support block is connected to one end of the lead screw away from the servo motor through a bearing, and the fixed plate of the clamp is abutted against an end of the support block. A transversely extending guide rod is connected to the sliding block, and the guide rod is connected to the fixed plate and the moving plate.

[0016] Further, a jacking cylinder is further arranged at the bottom of the lead screw transmission structure, and the lead screw transmission structure is fixedly installed at an output end of the jacking cylinder through a lead screw support seat.

[0017] The beneficial technical effects of the present application are as follows: the present application provides a knuckle opening bushing press fitting device, which comprises a support, the support comprises a pressing mechanism and a positioning mechanism, the pressing mechanism is used for pushing the opening bushing into the clamp of the positioning mechanism, the positioning block in the positioning mechanism extends into the opening of the opening bushing, and the fixing of the placement angle of the opening bushing is realized. In summary, the present application solves the positioning problem in the press fitting process of the opening bushing, improves the press fitting efficiency and assembly quality, and makes the installation angle of the opening bushing meet the requirements of the drawing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the knuckle opening bushing press fitting device of the present application;

[0019] Figure 2 is a state diagram of the positioning mechanism during press fitting of the present application;

[0020] Figure 3 is a structural schematic view of the pressing mechanism;

[0021] Figure 4 is an exploded schematic view of the pressing mechanism;

[0022] Figure 5 is a structural schematic view of the clamp;

[0023] Figure 6 is a front view of a positioning mechanism;

[0024] Figure 7 is a schematic view of a structure for controlling tension of a clamp by a lead screw transmission structure.

[0025] Reference signs: pressing mechanism 1, pressing rod 11, pressing head 12, plunger 13, nitrogen spring 14, sliding rail 15;

[0026] Positioning mechanism 2, clamp 21, clamping hole 211, fixed plate 212, moving plate 213, positioning block 22, wedge block 221, pressing positioning seat 23, lead screw transmission structure 24, lead screw 241, sliding block 242, servo motor 243, support block 244, inner support 2441, outer support 2442, pressure sensor 2443, guide rod 245, jacking air cylinder 26, lead screw support seat 27;

[0027] Support mechanism 3, side plate 31, support rod 32;

[0028] Open bushing 4, side opening 41. DETAILED DESCRIPTION

[0029] As Figure 1 and Figure 2 shown, a knuckle open bushing press-fitting device includes a support, the support is provided with a pressing mechanism 1, a positioning mechanism 2 and a support mechanism 3. As Figure 3 and Figure 4 shown, the pressing mechanism 1 aims to transfer and press the open bushing 4 into the bushing hole of the knuckle, including a vertically movable pressing rod 11 and a pressing head 12 sleeved on the lower end of the pressing rod 11, the pressing head 12 has a certain elastic annular flange, so that the lower edge of the open bushing 4 is clamped in the annular flange to position the open bushing 4.

[0030] As Figure 5 shown, the positioning mechanism 2 is used for fixing the open bushing 4 at the press-fitting position, including a clamp 21, a positioning block 22 and a pressing positioning seat 23. The clamp 21 has a clamping hole 211 for clamping the open bushing 4 to be installed, the positioning block 22 is fixedly installed on the clamp 21, the positioning block 22 is provided with a wedge block 221 matched with the side opening 41 of the open bushing 4, which extends into the side opening 41 of the open bushing 4 when the clamp 21 is clamped, and the position of the open bushing 4 is positioned by contact. Figure 2 and Figure 3 shown, the aperture of the clamping hole 211 of the clamp 21 is adjusted to adjust the outer diameter of the open bushing 4, so that the open bushing 4 is shrunk to a suitable size, thereby realizing the fixation of the placement angle of the open bushing 4.

[0031] The pressing positioning seat 23 is located below the clamp 21 and coaxially arranged with the clamping hole 211 of the clamp 21. The top of the pressing positioning seat 23 is provided with an annular convex edge matching the lower edge of the opening bushing 4. When the opening bushing 4 reaches the installation position, the lower edge of the opening bushing 4 will be clamped in the annular convex edge, preventing the opening bushing 4 from deviating in position during the pressing process.

[0032] The support mechanism 3 is used for positioning the body position of the knuckle and includes a plurality of side plates 31 and support rods 32. The side plates 31 and the support rods 32 are connected with the support frame through locking structures. The support rods 32 correspond to the connecting holes or other non-pressing position bushing holes on the knuckle, so that the knuckle can rotate around the support rods 32 to rotate the bushing hole to be pressed to the pressing position. The side plates 31 are arranged on the side of the knuckle according to the shape of the knuckle and can limit the rotating stroke of the knuckle. Meanwhile, the pressing positioning seat 23 can assist in positioning the position of the knuckle to a certain extent.

[0033] The opening bushing 4 is placed in the bushing hole of the knuckle with certain angle requirements. For the manual assembly machine, the placement angle of the opening bushing 4 needs to be fixed. When the placement angle of the opening bushing 4 needs to be fixed, the opening bushing 4 is sleeved on the pressing head 12. In order to prevent the opening bushing 4 from falling off when being sleeved on the pressing head 12, as shown in the figure, in an optional arrangement, the end of the pressing rod 11 is provided with a plunger 13 extending from the center of the pressing head 12. The plunger 13 is coaxially arranged with the pressing rod 11 and can support the opening bushing 4 from the center hole position.

[0034] In the embodiment, the lifting mechanism driving the vertical movement of the pressing rod 11 adopts a nitrogen gas spring 14 as a driving member. The fixed end of the nitrogen gas spring 14 is connected to the support frame, and the driving end of the nitrogen gas spring 14 connects the pressing rod 11 through a lifting plate. The pressing rod 11 drives the opening bushing 4 sleeved on the pressing head 12 to enter the clamping hole 211 of the clamp 21 under the driving of the nitrogen gas spring 14.

[0035] In an optional arrangement, in order to ensure the smooth operation of the pressing mechanism 1, the lifting mechanism further includes a vertically arranged sliding rail 15 which can guide the vertical displacement of the lifting plate. The lifting plate is slidingly connected to the sliding rail 15. The pressing rod 11 drives the pressing head 12 to move in the vertical direction of the sliding rail 15 under the driving of the nitrogen gas spring 14.

[0036] During the installation of the opening bushing 4, the placement angle of the opening bushing 4 is fixed. When the opening bushing 4 is installed and pressed into the knuckle bushing hole, the placement angle of the knuckle also needs to be fixed. The knuckle is placed on the support mechanism 3, and the side plates 31 support the knuckle. The support rods 32 adjust the placement angle of the knuckle so that the knuckle bushing hole passes through the top end of the pressing positioning seat 23, thereby fixing the placement angle of the knuckle.

[0037] When the placement angle of the open bushing 4 and the knuckle are fixed, the pressure rod 11 drives the open bushing 4 sleeved on the pressure head 12 to be pressed, and the open bushing 4 is pressed into the knuckle bushing hole.

[0038] In an optional arrangement, as shown in Figure 6 With Figure 7 The clamp 21 is driven to clamp by a pushing mechanism, which includes a fixed plate 212 and a moving plate 213. The moving plate 213 is fixedly connected to the horizontal moving output end of the pushing mechanism, and the fixed plate 212 is movably connected to the horizontal moving output end of the pushing mechanism. The moving plate 213 can move towards the fixed plate 212 under the driving of the pushing mechanism to adjust the hole diameter of the clamping hole 211 of the clamp 21. Before the open bushing 4 is installed, the pushing mechanism drives the moving plate 213 to move horizontally to the right to expand the clamping hole 211. When the open bushing 4 is sleeved on the pressure head 12, the pressure head 12 and the open bushing 4 move along the vertical direction of the lifting mechanism under the driving of the driving structure, and the open bushing 4 enters the clamping hole 211 of the clamp 21, the pushing mechanism drives the moving plate 213 to move horizontally to the left to reduce the clamping hole 211, and the hole diameter of the clamping hole 211 is adjusted to adjust the outer diameter of the open bushing 4, so that the open bushing 4 is shrunk to the appropriate size, thereby realizing the fixation of the placement angle of the open bushing 4, and completing the work of placing the open bushing 4 into the knuckle bushing hole.

[0039] The pushing mechanism adopts a lead screw transmission mechanism for linear movement. The lead screw transmission structure 24 includes a lead screw 241, a sliding block 242 threadedly installed on the lead screw 241, and a servo motor 243 driving the lead screw 241 to rotate. The end of the lead screw 241 away from the servo motor 243 is connected with a support block 244 through a bearing. The fixed plate 212 of the clamp 21 abuts against the end of the support block 244. A transversely extending guide rod 245 is connected to the sliding block 242, and the guide rod 245 penetrates through the fixed plate 212 to assist the bearing in guiding the position of the fixed plate 212. The moving plate 213 is connected to the end of the guide rod 245, and the horizontal movement is realized by the linear movement of the sliding block 242 on the lead screw.

[0040] Further, the support block 244 includes an outer support 2442 away from the lead screw 241 and an inner support 2441 close to the lead screw 241. The fixed plate 212 abuts against the end of the outer support 2442. A pressure sensor 2443 is arranged between the inner support 2441 and the outer support 2442. When the movable plate moves towards the fixed plate 212 to clamp the open bushing 4, a certain pressing force is applied from the outer support 2442 to the inner support 2441. The pressure sensor 2443 judges whether the open bushing 4 has been clamped according to the detected pressing force.

[0041] Further, the pushing mechanism is further provided with a jacking cylinder 26 at the bottom of the lead screw transmission structure 24, the lead screw transmission structure 24 is fixedly installed on the output end of the jacking cylinder 26 through a lead screw support seat 27, the piston movement of the jacking cylinder 26 can drive the whole lead screw transmission structure 24 and the clamp 21 to move up and down, thereby realizing the adjustment of the installation position of the open bush 4.

[0042] Compared with the way of judging the placement angle of the bush by means of a sensor or a vision system, the application has higher economy, better operation and placement of personnel, and higher efficiency. Since the hard limit of the positioning block 22 is provided, an error prevention function is also provided, and if the operator does not place the open bush 4 at the angle positioning block 22, the open bush 4 cannot be placed on the pressing rod 11, and high-precision placement is realized. Through the open bush 4 placement angle positioning block 22 and the knuckle placement adjustable support rod 32, the control of the pressing angle of the open bush 4 is realized, so that the installation angle of the open bush 4 meets the requirements of the drawing.

[0043] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A knuckle opening bush press fitting device comprising a support, characterized in that, Be equipped with on the support: Pressure mechanism (1), including pressure rod (11) and pressure head (12), the pressure head (12) is equipped with outside the pressure rod (11), for the sleeve opening bushing (4);The pressure rod (11) is vertically moved under the drive of lifting mechanism; Positioning mechanism (2), located below pressure mechanism (1), including clamp (21) and compression positioning seat (23), the clamp (21) has the clamping hole (211) of opening bushing clamping, the clamping hole (211) is coaxially arranged with pressure rod (11);Compression positioning seat (23) is located below the clamp (21), and is coaxially arranged with the clamping hole (211) of clamp (21); And the support mechanism (3) for positioning knuckle.

2. The open bush press fitting device according to claim 1, wherein The support mechanism (3) includes a plurality of side plates (31) on the support and a support rod (32) rotatably connected with the knuckle.

3. The open bush press fitting device according to claim 1, wherein The clamp (21) is provided with a positioning block (22) on the side of the clamping hole (211), and the positioning block (22) is positioned by contacting the side of the opening bushing.

4. The open bush press fitting device according to claim 3, wherein The positioning block (22) is provided with a wedge (221) corresponding to the opening position of the opening bushing.

5. The open bush press fitting device according to claim 1, wherein The end of the pressure rod (11) is provided with a plunger (13) extending from the middle part of the pressure head (12), and the plunger (13) is coaxially arranged with the pressure rod (11).

6. The open bush press fitting device of claim 1, wherein The lifting mechanism is a nitrogen spring (14) fixed on the support.

7. The open bush press fitting device of claim 1, wherein The lifting mechanism further includes a slide rail (15) vertically arranged on the support, and the pressure rod (11) is slidably connected to the slide rail (15) through a lifting plate.

8. The open bush press fitting device of claim 1, wherein The clamp (21) includes a fixed plate (212) and a moving plate (213) arranged opposite, and is driven to clamp by a lead screw transmission structure, the moving plate (213) is fixedly connected to the transverse output end of the lead screw transmission structure, and the fixed plate (212) is movably connected to the transverse output end of the lead screw transmission structure.

9. The open bush press fitting device of claim 8, wherein The lead screw transmission structure (24) includes a lead screw (241), a sliding block (242) threadedly fitted on the lead screw (241), and a servo motor (243) for driving the lead screw (241) to rotate, and the end of the lead screw (241) away from the servo motor (243) is connected with a support block (244) through a bearing, and the fixed plate (212) of the clamp (21) abuts against the end of the support block (244);The sliding block (242) is connected with a transversely extending guide rod (245), and the guide rod (245) penetrates the fixed plate (212) and is connected with the moving plate (213).

10. The open bush press fitting device of claim 9, wherein A jacking cylinder (26) is further arranged at the bottom of the lead screw transmission structure (24), and the lead screw transmission structure (24) is fixedly installed on the output end of the jacking cylinder (26) through a lead screw support seat (27).

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