Front suspension articulated cushion automatic press-fitting device
The design of the automatic pressing device for the front suspension articulation soft pad has solved the problems of low production efficiency and low yield caused by assembly deviation, and has achieved high-precision, low-cost automated pressing, thereby improving the overall vehicle quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGCHUN FAW SIHUAN TRANSMISSION AUTOMOBILE PARTS CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-12
AI Technical Summary
In the existing technology, the assembly deviation of the front suspension articulation pad leads to low production efficiency, poor positioning accuracy, affecting the quality of vehicle assembly and overall vehicle comfort, and it is also easily crushed, resulting in a low yield rate.
An automatic pressing device for front-hung hinged soft pads is adopted. Through the coaxial arrangement of components such as linear drive mechanism, limit sleeve, auxiliary positioning pin, and diameter reduction sleeve, the device uses the pressing inner hole as the positioning reference, reduces the diameter first and then presses, avoiding scraping and breakage, and realizing automated continuous cycle action.
It improves positioning accuracy and product yield, reduces failure rate and production cost, enhances vehicle assembly efficiency and overall vehicle comfort, and meets the requirements for large-volume, short-cycle supply.
Smart Images
Figure CN224347298U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tooling and fixture technology, and in particular to an automatic pressing device for a front-hung hinged soft pad. Background Technology
[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for machining or inspection; it is also called a clamp. Broadly speaking, any device used to quickly, conveniently, and safely install a workpiece at any stage of the manufacturing process can be called a fixture. A fixture typically consists of positioning elements (which determine the correct position of the workpiece within the fixture), clamping devices, tool setting and guiding elements (which determine the relative position of the tool and workpiece or guide the tool direction), indexing devices (which allow the workpiece to complete machining at several stations in a single setup; there are rotary indexing devices and linear indexing devices), connecting elements, and the fixture body (fixture base). Modern fixtures are developing towards speed, precision, and automation.
[0003] When press-fitting the front suspension hinge pad into the front suspension stabilizer bar assembly, the current practice is to use the rough shape of the front suspension stabilizer bar assembly control arm mounting hole for positioning. Positioning is adjusted batch by batch, with the control arm mounting hole and the control arm mounting pad having an interference fit. The chamfer of the control arm mounting hole serves as a positioning guide, and press-fitting is performed on one side. If the positioning accuracy is poor, rework is frequently required, and stable and reliable positioning accuracy cannot be guaranteed.
[0004] Currently, after the front suspension articulation pads are pressed onto both sides of the front suspension stabilizer bar assembly, the coaxiality deviation of the mounting holes is relatively large, which affects the next step of vehicle assembly and results in a low yield rate.
[0005] Previously, the outer blank of the control arm assembly hole of the suspension stabilizer bar assembly was used as the positioning reference, and the positioning was adjusted according to batch, resulting in poor positioning accuracy. Due to the high elasticity of the front suspension articulation pad and the relatively soft material of its outermost mating surface, and because the front suspension stabilizer bar assembly swing arm mounting hole and the front suspension articulation pad use an interference fit, and the front suspension articulation pad's outer dimensions are larger than the mating hole, during the pressing and installation of the front suspension articulation pad, there is a phenomenon where the inner hole of the mating hole scrapes the front suspension articulation pad. This causes the front suspension articulation pad to become out of round, and the scraped debris does not completely fall off, but mostly accumulates at the chamfer of the mating surface, causing several impacts: Firstly, the shape of the front suspension articulation pad changes after being scraped, resulting in a large deviation in the coaxiality of the mounting hole, leading to uneven stress in all directions. This causes it to fail quickly after installation and affects durability. Therefore, it seriously affects the OEM's installation efficiency, indirectly increasing production costs and becoming a bottleneck for increasing production capacity, far from meeting the requirements of large-volume, short-cycle supply. Secondly, the uneven stress on the front suspension articulation pad after installation caused by scraping affects not only its durability but also the overall vehicle's comfort and noise reduction performance.
[0006] Furthermore, in the original assembly method, the front suspension hinge pad is easily crushed, resulting in scrap and a low yield rate. In order to reduce production costs, the crushed front suspension hinge pad needs to be removed and reinstalled. The removal process takes a long time and requires special tools, which further affects production efficiency and increases production costs. Summary of the Invention
[0007] To address the problem of low production efficiency caused by assembly deviations of the front suspension hinge pad in existing technologies, the purpose of this utility model is to provide an automatic pressing device for the front suspension hinge pad, comprising:
[0008] A reducing sleeve support 10 is fixedly connected to a device support 9. The fixed end of the pressure head 1 is fixedly connected to a linear drive mechanism. A limiting sleeve 2 and an auxiliary positioning pin 3 are installed on the pressure head 1. A reducing sleeve 4 is installed on the reducing sleeve support 10. A reducing sleeve return spring 8, a retaining ring 11, and a screw 12 are installed on the reducing sleeve 4. The screw 12 is fixedly connected to the reducing sleeve 4. A positioning sleeve 5, a positioning shaft assembly 6, and a positioning shaft return spring 7 are installed on the device support 9.
[0009] The linear drive mechanism, the pressure head 1, the limiting sleeve 2, the auxiliary positioning pin 3, the diameter reduction sleeve 4, the positioning sleeve 5, the positioning shaft assembly 6, and the positioning shaft return spring 7 are arranged coaxially with each other.
[0010] The front suspension stabilizer bar assembly swing arm 22 is positioned at the mating point of the positioning shaft assembly 6;
[0011] The front suspension hinge pad 21 is placed at the mating point of the auxiliary positioning pin 3;
[0012] The limiting sleeve 2 is in direct contact with the front suspension hinge pad 21. The limiting sleeve 2 has a flat hole for circumferential positioning of the front suspension hinge pad 21. Specifically, the front suspension hinge pad is positioned so that it is in the correct position when rotated in a certain direction.
[0013] Optionally, in some embodiments, the linear drive mechanism is used to drive the pressure head 1 and the limiting sleeve 2 to push the front suspension hinge pad 21 to provide a feeding action, approaching the reduced diameter sleeve 4, until the front suspension hinge pad 21 contacts the reduced diameter sleeve 4.
[0014] Optionally, in some embodiments, the linear drive mechanism is further configured to push the reduced-diameter sleeve 4 to provide a feed action, bringing it close to the front suspension stabilizer bar assembly swing arm 22, so that the reduced-diameter sleeve 4 contacts the front suspension stabilizer bar assembly swing arm 22.
[0015] Optionally, in some embodiments, after the front suspension hinge pad 21 is pressed into the inner hole of the reducing sleeve 4 under the drive of the linear drive mechanism, the front suspension hinge pad 21 is pressed into the inner hole of the front suspension stabilizer arm 22.
[0016] Optionally, in some embodiments, under the drive of the linear drive mechanism, the front suspension hinge pad 21 first contacts the positioning shaft assembly 6 at its narrow end, pushing the positioning shaft assembly 6 out of the inner hole of the front suspension stabilizer arm 22.
[0017] Optionally, in some embodiments, under the drive of the linear drive mechanism, the flange end of the limiting sleeve 2 contacts the large hole end face of the reduced diameter sleeve 4 to determine whether to stop feeding, so as to avoid the automatic pressing device from continuously feeding and causing the front suspension hinge pad 21 to malfunction.
[0018] Specifically, the limiting sleeve flange finally contacts the end face of the large hole of the reduced diameter sleeve to stop the feed, which can prevent the entire structure from continuing to feed and causing the front suspension hinge pad to break or even collapse. If there is no contact, it means that it has not been pressed into the correct position and the device needs to be checked.
[0019] The above-mentioned technical solution of this utility model has at least the following beneficial technical effects: The automatic pressing device for front suspension hinge pads provided by this utility model arranges the linear drive mechanism, the pressing head 1, the limiting sleeve 2, the auxiliary positioning pin 3, the diameter reduction sleeve 4, the positioning sleeve 5, the positioning shaft assembly 6, and the positioning shaft return spring 7 coaxially with each other, using the pressing inner hole as the positioning reference to improve positioning accuracy; on the other hand, by reducing the diameter of the front suspension hinge pad before pressing, the front suspension hinge pad is prevented from being scraped, thus solving the problem of excessive coaxiality and uneven stress caused by the scraping of the front suspension hinge pad. At the same time, it objectively improves the automation level of the device. The device can independently provide automated continuous cycle actions of feeding, clamping the workpiece, reducing diameter, automatically correcting positioning accuracy, pressing, retraction, and resetting. It does not rely on a hydraulic control system. The purely mechanical structure is more stable and reliable, with a low failure rate. The production, use, and maintenance costs of the equipment are low, which fundamentally and significantly improves the product yield and production efficiency. It also enhances product durability, driving comfort, and quietness. It reduces scrap and rework, saves time, reduces costs, and creates higher efficiency. Moreover, this utility model does not rely on a hydraulic system. The control system operates independently and has good scalability, making it suitable for various application scenarios. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or in the conventional technology, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the automatic pressing device for the front suspension hinge pad, provided in an embodiment of the present invention, showing the installation of the front suspension hinge pad before pressing.
[0022] Figure 2 This is a schematic diagram of the intermediate process feeding of an automatic pressing device for a front-hinged hinged soft pad provided in an embodiment of this utility model;
[0023] Figure 3 This is a schematic diagram of the intermediate process of pressing a front-hinged soft pad automatic pressing device against a workpiece, provided in an embodiment of this utility model.
[0024] Figure 4 This is a schematic diagram of the intermediate diameter reduction process of an automatic pressing device for a front suspension hinged soft pad provided in this embodiment of the utility model;
[0025] Figure 5 This is a schematic diagram of the intermediate process correction and positioning of an automatic pressing device for a front suspension hinged soft pad provided in an embodiment of this utility model;
[0026] Figure 6 This is a schematic diagram of the intermediate pressing process of an automatic pressing device for a front suspension hinged soft pad provided in an embodiment of this utility model.
[0027] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:
[0028] 1-Pressure head; 2-Limit sleeve; 3-Auxiliary positioning pin; 4-Reduced diameter sleeve; 5-Positioning sleeve; 6-Positioning shaft assembly; 7-Positioning shaft return spring; 8-Reduced diameter sleeve return spring; 9-Equipment support; 10-Reduced diameter sleeve support; 11-Retaining ring; 12-Screw; 21-Front suspension hinge pad; 22-Front suspension stabilizer bar assembly swing arm. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0031] The accompanying drawings show schematic diagrams of layer structures according to embodiments of the present invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.
[0032] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0033] In the press-fitting production of front suspension articulated pads, it is necessary to ensure the concentricity of the front suspension articulated pads at both ends of the front suspension stabilizer bar assembly. This requires not only ensuring the coaxiality of the front suspension stabilizer bar assembly but also guaranteeing press-fitting accuracy, demanding that the front suspension articulated pads be completely pressed into the front suspension stabilizer bar assembly swing arm mounting holes with uniform force. This invention uses the front suspension stabilizer bar assembly swing arm mounting holes as a positioning reference, eliminating the need for batch-by-batch adjustments and ensuring reliable positioning accuracy. This invention employs a pre-placed compression sleeve method, first reducing the diameter and then sequentially and tightly pressing the pads into the mounting holes, avoiding scraping-induced out-of-roundness and debris accumulation. This fundamentally solves the coaxiality deviation and stress unevenness problems caused by scraping of the front suspension articulated pads. This improves product quality, increases efficiency, enhances product durability, improves driving comfort, and increases noise reduction.
[0034] This utility model relates to an automated device for pressing and fitting a front suspension hinge pad, see reference. Figure 1 As shown, it mainly consists of a pressure head 1, a limit sleeve 2, an auxiliary positioning pin 3, a reducing sleeve 4, a positioning sleeve 5, a positioning shaft assembly 6, a positioning shaft return spring 7, a reducing sleeve return spring 8, an equipment support 9, a reducing sleeve support 10, a retaining ring 11, and a screw 12.
[0035] The reducing sleeve support 10 is fixedly connected to the equipment support 9. The fixed end of the pressure head 1 is fixedly connected to the linear drive mechanism cylinder. The limiting sleeve 2 and the auxiliary positioning pin 3 are installed on the pressure head 1. The reducing sleeve 4 is installed on the reducing sleeve support 10. The reducing sleeve return spring 8, the retaining ring 11, and the screw 12 are installed on the reducing sleeve 4. The screw 12 is fixedly connected to the reducing sleeve 4. The positioning sleeve 5, the positioning shaft assembly 6, and the positioning shaft return spring 7 are installed on the equipment support 9.
[0036] The linear drive mechanism, pressure head 1, limit sleeve 2, auxiliary positioning pin 3, diameter reduction sleeve 4, positioning sleeve 5, positioning shaft assembly 6, and positioning shaft return spring 7 are all arranged coaxially.
[0037] Before pressing, place the front suspension stabilizer bar assembly swing arm 22 at the mating point of the positioning shaft assembly 6, and place the front suspension hinge pad 21 at the mating point of the auxiliary positioning pin 3, as follows: Figure 1 As shown.
[0038] The limiting sleeve 2 is in direct contact with the front suspension hinge pad 21. The limiting sleeve 2 has a flat hole for circumferential positioning of the front suspension hinge pad 21.
[0039] The linear drive mechanism's hydraulic cylinder drives the pressure head 1 and the limiting sleeve 2 to push the front suspension hinge pad 21, providing a feed action to approach and contact the reduced-diameter sleeve 4. Specifically, as follows... Figure 2 As shown.
[0040] The linear drive mechanism cylinder continues to advance, pushing the reduced-diameter sleeve 4 to provide a feed action, approaching and contacting the front suspension stabilizer bar assembly swing arm 22, as... Figure 3 As shown.
[0041] As the linear drive mechanism cylinder continues to advance, the front suspension hinge pad 21 is pressed into the inner hole of the reducing sleeve 4, causing the front suspension hinge pad 21 to begin reducing its diameter. Figure 4 As shown.
[0042] As the linear drive mechanism cylinder continues to advance, the front suspension hinge pad 21, with its first reduced diameter end, is pressed into the inner hole of the front suspension stabilizer bar assembly swing arm 22, thus correcting the positioning accuracy. Figure 5 As shown.
[0043] The linear drive mechanism cylinder continues to advance, and the front suspension hinge pad 21 first contacts the reduced-diameter end of the positioning shaft assembly 6 and gradually pushes it out of the inner hole of the front suspension stabilizer bar assembly swing arm 22. It continues to advance, and when the flange end face of the limiting sleeve 2 contacts the end face of the reduced-diameter sleeve 4, the feeding stops to avoid the automatic pressing device from continuously feeding and causing malfunction of the front suspension hinge pad 21. The linear drive mechanism cylinder then stops advancing, completing the pressing process. Figure 6 As shown.
[0044] Specifically, the feed should stop when the flange of the limiting sleeve 2 finally contacts the end face of the large hole of the reducing sleeve 4 to prevent the entire structure from continuing to feed, which could cause the front suspension hinge pad 21 to break or even collapse; if there is no contact, it means that it has not been pressed into the correct position and the current device needs to be checked.
[0045] After completion, the linear drive mechanism hydraulic cylinder drives the pressure head 1 and the limit sleeve 2 to retract, the reducing sleeve 4 is reset under the action of the reducing sleeve return spring 8, the front suspension stabilizer bar assembly of the pressed product is removed, the positioning shaft assembly 6 is reset under the action of the positioning shaft return spring 7, and the entire feeding process is completed continuously and automatically.
[0046] The technical solution of this utility model uses the press-fit inner hole as the positioning reference to improve the positioning accuracy; moreover, this utility model reduces the diameter of the front suspension hinge pad before press-fitting to avoid the front suspension hinge pad being scraped; and this utility model can independently provide an automated continuous cycle of feeding-workpiece clamping-diameter reduction-automatic correction of positioning accuracy-press-returning-reset without relying on a hydraulic control system.
[0047] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0048] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. An automatic pressing device for a front-hinged soft pad, characterized in that, include: A reducing sleeve support (10) is fixedly connected to the equipment support (9). The fixed end of the pressure head (1) is fixedly connected to the linear drive mechanism. A limiting sleeve (2) and an auxiliary positioning pin (3) are installed on the pressure head (1). A reducing sleeve (4) is installed on the reducing sleeve support (10). A reducing sleeve return spring (8), a retaining ring (11), and a screw (12) are installed on the reducing sleeve (4). The screw (12) is fixedly connected to the reducing sleeve (4). A positioning sleeve (5), a positioning shaft assembly (6), and a positioning shaft return spring (7) are installed on the equipment support (9). The linear drive mechanism, the pressure head (1), the limiting sleeve (2), the auxiliary positioning pin (3), the diameter reduction sleeve (4), the positioning sleeve (5), the positioning shaft assembly (6), and the positioning shaft return spring (7) are arranged coaxially with each other. The front suspension stabilizer bar assembly swing arm (22) is positioned at the mating point of the positioning shaft assembly (6); The front suspension hinge pad (21) is placed at the mating point of the auxiliary positioning pin (3); The limiting sleeve (2) is in direct contact with the front suspension hinge pad (21), and the limiting sleeve (2) has a flat hole for circumferential positioning of the front suspension hinge pad (21).
2. The apparatus according to claim 1, characterized in that, The linear drive mechanism is used to drive the pressure head (1) and the limiting sleeve (2) to push the front suspension hinge pad (21) to provide a feeding action, approach the reducing sleeve (4) until the front suspension hinge pad (21) contacts the reducing sleeve (4).
3. The apparatus according to claim 1, characterized in that, The linear drive mechanism is also used to push the reduced diameter sleeve (4) to provide a feed action, bringing it close to the front suspension stabilizer arm (22), so that the reduced diameter sleeve (4) contacts the front suspension stabilizer arm (22).
4. The apparatus according to claim 1, characterized in that, Driven by the linear drive mechanism, after the front suspension hinge pad (21) is pressed into the inner hole of the reduced diameter sleeve (4) to reduce its diameter, the front suspension hinge pad (21) is pressed into the inner hole of the front suspension stabilizer arm (22).
5. The apparatus according to claim 1, characterized in that, Driven by the linear drive mechanism, the front suspension hinge pad (21) first contacts the positioning shaft assembly (6) at its narrow end, pushing the positioning shaft assembly (6) out of the inner hole of the front suspension stabilizer arm (22).
6. The apparatus according to claim 1, characterized in that, When the flange end of the limiting sleeve (2) contacts the large hole end face of the reduced diameter sleeve (4) under the drive of the linear drive mechanism, the feeding stops to avoid the automatic pressing device from causing the front suspension hinge pad (21) to malfunction due to continuous feeding.