An equipment for controlling hydraulic bushing press fitting of an arm and an aluminum support
By designing a positioning structure and buffer guide mechanism compatible with both left and right control arms, the problem of high equipment cost and low efficiency caused by positioning fixtures at different workstations in the existing technology is solved, and efficient and low-cost production of press-fitting at the same workstation is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TOWER AUTOMOTIVE (WUHU) CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-07-10
AI Technical Summary
In the existing technology, different positioning fixtures are required at different workstations when pressing aluminum brackets onto the left and right control arms, which leads to increased equipment costs and reduced production efficiency.
Design a hydraulic bushing pressing device for control arms and aluminum brackets. It adopts a second positioning structure with left and right symmetrical arrangement, which can be compatible with the positioning of the left and right control arms and realize pressing at the same station. The first positioning structure positions the installation end of the control arm, and the second positioning structure positions the rest of the part. Combined with the buffer mechanism and guide structure, the pressing quality is ensured.
This enables compatible production of left and right control arms at the same workstation, reducing equipment investment costs and improving pressing quality and efficiency.
Smart Images
Figure CN224475825U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of press-fitting equipment, specifically to a device for press-fitting a control arm and an aluminum bracket hydraulic bushing. Background Technology
[0002] To optimize vehicle handling, comfort, durability, and NVH performance, the vehicle's control arm is equipped with an aluminum bracket and a hydraulic bushing. The aluminum bracket serves as the mounting base for the control arm, while the hydraulic bushing is fixed between the subframe and the vibration source (such as the engine or suspension control arm), forming a controllable force transmission path.
[0003] After the hydraulic bushing is press-fitted onto the aluminum bracket, the aluminum bracket containing the hydraulic bushing can be press-fitted onto the control arm. The left and right control arms are respectively fitted with left and right aluminum brackets. During press-fitting, the relative positions of the left and right aluminum brackets and the control arms are different. When the left aluminum bracket is press-fitted onto the left control arm, the left control arm is to the left of the left aluminum bracket; when the right aluminum bracket is installed onto the right control arm, the right control arm is to the right of the right aluminum bracket.
[0004] When pressing aluminum brackets onto the control arms, the control arms need to be positioned. Therefore, different positioning fixtures are required to position the left and right control arms separately when pressing the left and right aluminum brackets. Thus, different fixtures need to be used at different workstations when pressing aluminum brackets onto the left and right control arms. Utility Model Content
[0005] The purpose of this invention is to provide a device for pressing a control arm and an aluminum bracket hydraulic bushing. This device is equipped with two second positioning structures arranged symmetrically on the left and right sides, which can position the left control arm and the right control arm respectively, so as to achieve compatibility between the left control arm and the right control arm at the same work station.
[0006] To achieve the above objectives, this utility model provides a device for pressing a control arm and an aluminum bracket hydraulic bushing, including a worktable, a press, a positioning fixture, and a pressing fixture. The positioning fixture is fixedly connected to the worktable, and the pressing fixture is connected to the end of the press. The press drives the pressing fixture to move closer to or away from the positioning fixture. The pressing operation cooperates with the hydraulic bushing to position the hydraulic bushing, and the positioning fixture cooperates with the control arm to position the control arm.
[0007] The positioning fixture includes a first positioning structure and two second positioning structures arranged symmetrically on the left and right. The first positioning structure positions the mounting end of the control arm, and the rest of the control arm is positioned by the corresponding second positioning structure.
[0008] Preferably, the positioning fixture further includes a first positioning component, which includes two limiting corners that limit the left and right control arms respectively.
[0009] Preferably, the pressing fixture includes a bushing fixing shaft, a left pressing fixture, and a right pressing fixture. The left pressing fixture cooperates with the bushing fixing shaft to position the left aluminum bracket, and the right pressing fixture cooperates with the bushing fixing shaft to position the right aluminum bracket.
[0010] Preferably, the bushing fixing shaft is configured as a stepped shaft, with a small diameter at the front end and a large diameter at the rear end, and the rear end of the stepped shaft mates with the mounting end of the control arm.
[0011] Preferably, the pressing fixture is connected to the worktable via a first guide structure.
[0012] Preferably, the first positioning structure includes a support member and a clamping member. The support member is used to support the mounting end of the control arm, and the clamping member cooperates with the support member to limit the mounting end of the control arm.
[0013] Preferably, the positioning fixture also includes a buffer mechanism.
[0014] Preferably, the buffer mechanism includes a positioning platform, which is slidably connected to the worktable. A pressure cylinder is provided on the worktable, and the telescopic end of the pressure cylinder abuts against the positioning platform.
[0015] According to the above technical solution, the first positioning structure of this utility model positions the mounting end of the control arm, and the rest of the control arm is positioned by the corresponding second positioning structure. Through the first positioning structure, the mounting end and the pressing fixture are coaxially arranged. When the press horizontally pushes the pressing fixture toward the control arm, the inner hole of the bushing that cooperates with the pressing fixture can be coaxially fitted onto the mounting end, thereby ensuring the quality of pressing the aluminum bracket and the control arm.
[0016] The positioning device includes two symmetrically arranged second positioning structures, corresponding to the left and right control arms respectively. When a certain type of control arm needs to be produced, the corresponding second positioning structure can be directly selected on the positioning device. Therefore, by using this equipment for pressing control arms with aluminum bracket hydraulic bushings, both left and right control arms can be produced compatiblely, thereby achieving the purpose of pressing control arms and aluminum bracket hydraulic bushings at the same workstation, saving on equipment investment costs.
[0017] First, the mounting end is engaged with the first positioning structure. Then, the control arm is placed onto the second positioning structure to achieve positioning of the control arm. The second positioning structure includes a positioning pin that engages with a positioning hole on the control arm. The lower end of the positioning pin has a support surface to support the height of the control arm. By setting the height of the support surface, the posture of the control arm on the positioning fixture can be ensured, so that the mounting end can be in a horizontal state. This ensures a smooth pressing process for the aluminum bracket and improves the pressing quality.
[0018] Preferably, to avoid the impact of the instantaneous impact force generated when the aluminum bracket is pressed onto the mounting end on the control arm, the positioning pin can be configured to have a gap with the positioning hole, so that the control arm can buffer the impact energy by rotating relative to the positioning pin at the instant of pressing.
[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0021] Figure 1 This is a schematic diagram of a device for press-fitting a control arm with a hydraulic bushing of an aluminum bracket;
[0022] Figure 2 This is a schematic diagram of a device for press-fitting a control arm with a hydraulic bushing of an aluminum bracket;
[0023] Figure 3 This is a schematic diagram of a device for press-fitting a control arm with a hydraulic bushing of an aluminum bracket;
[0024] Figure 4 This is a schematic diagram of a device for press-fitting a control arm with a hydraulic bushing of an aluminum bracket;
[0025] Figure 5 This is a schematic diagram of a control arm.
[0026] Explanation of reference numerals in the attached figures
[0027] 1 workbench 2 presses
[0028] 31 Support component 42 Left press-fitting fixture
[0029] 32 positioning block 33 positioning pin
[0030] 341 Limiting Corner 41 Bushing Fixed Shaft
[0031] 43 Right Press Fitting Fixture 5 First Guide Structure
[0032] 10 Mounting end 34 Clamping parts
[0033] 61 Positioning Platform 62 Pressure Cylinder
[0034] 63 Second guide structure 35 First positioning component
[0035] 101 angle Detailed Implementation
[0036] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0037] In this utility model, unless otherwise stated, directional words such as "one end," "the other end," "outer surface," "axis," "conical," and "near" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.
[0038] join Figure 1-5 The device for pressing a control arm and an aluminum bracket hydraulic bushing includes a worktable 1, a press 2, a positioning fixture and a pressing fixture. The positioning fixture is fixedly connected to the worktable 1, and the pressing fixture is connected to the end of the press 2. The press 2 drives the pressing fixture to move closer to or away from the positioning fixture. The pressing work cooperates with the hydraulic bushing to position the hydraulic bushing, and the positioning fixture cooperates with the control arm to position the control arm.
[0039] The positioning fixture includes a first positioning structure and two second positioning structures arranged symmetrically on the left and right. The first positioning structure positions the mounting end 10 of the control arm, and the rest of the control arm is positioned by the corresponding second positioning structure.
[0040] Through the implementation of the above technical solution, the first positioning structure positions the mounting end 10 of the control arm, and the rest of the control arm is positioned by the corresponding second positioning structure. Through the first positioning structure, the mounting end 10 is coaxially set with the pressing fixture. When the press 2 horizontally pushes the pressing fixture toward the control arm, the inner hole of the bushing that cooperates with the pressing fixture can be coaxially fitted onto the mounting end, thereby ensuring the quality of pressing the aluminum bracket and the control arm.
[0041] The positioning device includes two symmetrically arranged second positioning structures, corresponding to the left and right control arms respectively. When a certain type of control arm needs to be produced, the corresponding second positioning structure can be directly selected on the positioning device. Therefore, by using this equipment for pressing control arms with aluminum bracket hydraulic bushings, both left and right control arms can be produced compatiblely, thereby achieving the purpose of pressing control arms and aluminum bracket hydraulic bushings at the same workstation, saving on equipment investment costs.
[0042] First, the mounting end is engaged with the first positioning structure, and then the control arm is placed on the second positioning structure to achieve positioning of the control arm. The second positioning structure includes a positioning pin 33, which engages with a positioning hole on the control arm. The lower end of the positioning pin 33 is provided with a support surface, which is used to support the height of the control arm. By setting the height of the support surface, the posture of the control arm on the positioning fixture can be ensured, so that the mounting end 10 can be in a horizontal state, thereby ensuring a smooth pressing process of the aluminum bracket and improving the pressing quality.
[0043] Preferably, in order to avoid the impact of the instantaneous impact force generated when the aluminum bracket is pressed to the installation end on the control arm, the positioning pin 33 can be configured to have a gap with the positioning hole, so that the control arm can buffer the impact energy by rotating relative to the positioning pin 33 at the instant of pressing.
[0044] In this implementation process, preferably, the positioning fixture also includes a first positioning component 35, which includes two limiting corners 341, and the two limiting corners 341 respectively limit the left and right control arms.
[0045] The two limiting corners 341 of the first positioning component 35 are respectively engaged with the included angle 101 of the left control arm and the right control arm.
[0046] After the press 2 is activated, the control arm rotates around the positioning pin 33. The first positioning element 35, in cooperation with the included angle 101, reliably limits the control arm, ensuring the stability of the installation end position while reducing the impact force of the control arm on the positioning pin 33. The second positioning structure also includes a positioning block 32, which cooperates with the outer edge of the control arm to limit the control arm and prevent the position of the control arm from shifting during the pressing process, thus affecting the pressing quality.
[0047] In this embodiment, preferably, the pressing fixture includes a bushing fixing shaft 41, a left pressing fixture 42, and a right pressing fixture 43. The left pressing fixture 42 cooperates with the bushing fixing shaft 41 to position the left aluminum bracket, and the right pressing fixture 43 cooperates with the bushing fixing shaft 41 to position the right aluminum bracket.
[0048] The left pressing fixture 42 and the right pressing fixture 43 are located on both sides of the bushing fixing shaft 41. After the aluminum bracket is fitted onto the bushing fixing shaft 41, the left pressing fixture 42 is located between the two mounting arms of the left aluminum bracket. The two end faces of the left pressing fixture 42 are respectively attached to the opposite faces of the two mounting arms of the aluminum bracket. The left aluminum bracket is supported by the cooperation between the left pressing fixture 42 and the mounting arms. The right pressing fixture 43 is located between the two mounting arms of the right aluminum bracket. The two end faces of the right pressing fixture 43 are respectively attached to the opposite faces of the two mounting arms of the right aluminum bracket. The left aluminum bracket is supported by the cooperation between the right pressing fixture 43 and the mounting arms.
[0049] The bushing fixing shaft 41 passes through the inner hole of the bushing in the aluminum bracket. The diameter of the bushing fixing shaft 41 is smaller than the diameter of the inner hole of the bushing. After the press 2 is activated, the bushing fixing shaft 41 extends into the inner hole of the mounting end 10, and the bushing is pressed into the mounting end 10. The inner hole of the bushing mates with the outer wall of the mounting end 10. During the pressing process, the bushing fixing shaft 41 extends into the inner hole of the mounting end 10 and guides the press 2 during the pressing process, so that the bushing and the mounting end can reliably mate.
[0050] In this embodiment, preferably, the bushing fixing shaft 41 is configured as a stepped shaft with a small front end diameter and a large rear end diameter, and the rear end of the stepped shaft is fitted with the inner hole of the mounting end 10 of the control arm.
[0051] During the press-fitting process, the front end of the stepped shaft needs to be inserted into the hole of the mounting end 10 of the control arm to guide the aluminum bracket. Then, the mounting end 10 mates with the bushing mounting hole of the aluminum bracket, and the rear end of the stepped shaft enters the hole of the mounting end 10. The mounting end 10 extends into the bushing mounting hole. As the press 2 continues to operate, the aluminum bracket is pressed onto the mounting end 10 of the control arm, thus achieving the press-fitting of the aluminum bracket and the control arm.
[0052] The bushing fixing shaft 41 is set as a stepped shaft. The front end has a smaller diameter, which makes it easy to enter the mounting end 10 and guide the press 2. The rear end is larger, which can cooperate with the mounting end 10 after entering the mounting end 10, so as to avoid the mounting end 10 from moving during the pressing process and ensure the pressing quality.
[0053] In this embodiment, preferably, the pressing fixture is connected to the worktable 1 via the first guide structure 5.
[0054] The first guide structure 5 is set as a linear slide rail, so that the pressing work can only approach the control arm in a straight line, which is used to ensure the coaxiality of the pressing fixture and the mounting end 10 of the control arm during the pressing process.
[0055] In this embodiment, preferably, the first positioning structure includes a support member 31 and a clamping member 34. The support member 31 is used to support the mounting end 10 of the control arm, and the clamping member 34 cooperates with the support member 31 to limit the mounting end 10 of the control arm.
[0056] When the press pushes the aluminum bracket closer to the mounting end 10, it is necessary to ensure the stability of the position of the mounting end 10 in order to ensure the quality of the press fitting. The stability of the position of the mounting end 10 can be ensured by the cooperation of the support 31 and the clamping 34, so that the bushing can reliably cooperate with the mounting end 10.
[0057] First, the mounting end 10 of the control arm is placed on the support member 31. Then, the clamping member 34 is activated to clamp the mounting end 10, preventing it from jumping during the pressing process. The support member 31 is U-shaped, and this U-shape conforms to the supported position of the mounting end 10. Therefore, through the cooperation of the support member 31 and the clamping member 34, the position of the mounting end 10 can be reliably restricted.
[0058] The support member 31 has a certain height. Under the action of the support member 31, the height of the mounting end 10 can match the height of the aluminum bracket, so that the mounting end 10 and the aluminum bracket are coaxially set.
[0059] Below the positioning pin 33 is a support surface that supports the control arm. The support surface supports the control arm to ensure the height of the control arm in the support position. The support surface cooperates with the support member 31 to ensure that the mounting end 10 is placed horizontally so that the mounting end 10 is coaxial with the aluminum bracket.
[0060] In this embodiment, preferably, the positioning fixture further includes a buffer mechanism.
[0061] The positioning fixture is slidably connected to the worktable through a buffer structure. A linear slide rail is provided between the buffer mechanism and the worktable. When the press exerts a large force on the control arm, there will be a tendency for relative movement between the positioning fixture and the worktable. However, there are also connecting parts between the buffer mechanism and the worktable. The connecting parts can fix the buffer mechanism above the worktable. Therefore, these connecting parts will prevent relative movement between the positioning fixture and the worktable. In this process, the connecting parts can consume some of the kinetic energy of the press 2, thereby protecting the contact position between the mounting end 10 and the aluminum bracket.
[0062] When the press 2 pushes the aluminum bracket to engage with the mounting end 10, the press 2 will apply a lot of pressure to the mounting end 10 during the pressing process. The buffer mechanism can buffer the pressure applied by the aluminum bracket to the mounting end 10 when the aluminum bracket engages with the mounting end 10, thus avoiding hard contact between the two.
[0063] In this embodiment, preferably, the buffer mechanism includes a positioning platform 61, which is slidably connected to the worktable 1. A pressure cylinder 62 is provided on the worktable 1, and the telescopic end of the pressure cylinder 62 abuts against the positioning platform 61.
[0064] During the pressing process, the connecting part between the buffer mechanism and the worktable can absorb some of the kinetic energy of the press 2. The pressure cylinder 62 can also absorb some of the kinetic energy of the press 2. Preferably, the pressure cylinder 62 is positioned opposite the press 2. The force exerted by the press 2 on the positioning platform 61 will be balanced by the pressure cylinder 62, thus protecting the connecting part between the buffer mechanism and the worktable.
[0065] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.
[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.
[0067] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A device for press-fitting a control arm with an aluminum bracket hydraulic bushing, characterized in that, It includes a worktable (1), a press (2), a positioning fixture and a pressing fixture. The positioning fixture is fixedly connected to the worktable (1), and the pressing fixture is connected to the end of the press (2). The press (2) drives the pressing fixture to move closer to or away from the positioning fixture. The pressing work cooperates with the hydraulic bushing to position the hydraulic bushing. The positioning fixture cooperates with the control arm to position the control arm. The positioning fixture includes a first positioning structure and two second positioning structures arranged symmetrically on the left and right. The first positioning structure positions the mounting end (10) of the control arm, and the rest of the control arm is positioned by the corresponding second positioning structure.
2. The device for press-fitting the control arm and the aluminum bracket hydraulic bushing according to claim 1, characterized in that, The positioning fixture includes a first positioning component (35), which includes two limiting corners (341) that limit the left and right control arms respectively.
3. The device for press-fitting the control arm and the aluminum bracket hydraulic bushing according to claim 1, characterized in that, The press-fitting fixture also includes a bushing fixing shaft (41), a left press-fitting fixture (42), and a right press-fitting fixture (43). The left press-fitting fixture (42) cooperates with the bushing fixing shaft (41) to position the left aluminum bracket, and the right press-fitting fixture (43) cooperates with the bushing fixing shaft (41) to position the right aluminum bracket.
4. The device for press-fitting the control arm and the aluminum bracket hydraulic bushing according to claim 3, characterized in that, The bushing fixing shaft (41) is set as a stepped shaft. The front end of the stepped shaft has a small diameter, the rear end of the stepped shaft has a large diameter, and the rear end of the stepped shaft is matched with the mounting end (10) of the control arm.
5. The device for press-fitting the control arm and the aluminum bracket hydraulic bushing according to claim 1, characterized in that, The press-fitting fixture is connected to the worktable (1) through the first guide structure (5).
6. The device for press-fitting the control arm and the aluminum bracket hydraulic bushing according to claim 1, characterized in that, The first positioning structure includes a support member (31) and a clamping member (34). The support member (31) is used to support the mounting end (10) of the control arm, and the clamping member (34) cooperates with the support member (31) to limit the mounting end (10) of the control arm.
7. The device for press-fitting the control arm and the aluminum bracket hydraulic bushing according to claim 1, characterized in that, The positioning fixture also includes a buffer mechanism.
8. The device for press-fitting the control arm and the aluminum bracket hydraulic bushing according to claim 7, characterized in that, The buffer mechanism includes a positioning platform (61), which is slidably connected to the worktable (1). A pressure cylinder (62) is provided on the worktable (1), and the extension end of the pressure cylinder (62) abuts against the positioning platform (61).