Press fitting clamp for special-shaped composite bush of automobile plate spring
By designing the fixing blocks and positioning groove structures in the fixture, the problems of angular accuracy and symmetry during the pressing process of composite bushing are solved, and precise pressing and efficient production of composite bushings are achieved.
Patent Information
- Application Number
- CN202422581162.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The prior art is difficult to ensure the angular accuracy and symmetry of the composite bushing during the pressing process, resulting in deformation or damage to the bushing, and traditional methods require multiple flips and pressing processes.
A clamp structure including a pad plate, a fixing block, a positioning groove and an L-shaped positioning block is designed. The end of the bushing is aligned by the fixing block and the positioning groove, and combined with the sliding and locking of the L-shaped positioning block, the precise alignment and pressing of the bushing is achieved.
The precise pressing of composite bushing is realized, ensuring angle accuracy and symmetry, simplifying the operation process, reducing the loss rate and labor cost, and improving production efficiency.
Smart Images
Figure CN223223319U_ABST
Abstract
Description
Technical field:
[0001] The utility model relates to the field of clamps, in particular to a device capable of accurately and quickly pressing a special-shaped composite bushing into a leaf spring. Background technology:
[0002] With the rapid development of my country's automotive industry, medium- and heavy-duty vehicles have become essential tools for people's production and daily lives. However, during vehicle use, people not only place high demands on the vehicle's high load-bearing capacity (safety), but also place equal emphasis on comfort and subsequent maintenance. Therefore, in the early stages of vehicle design, considering the road conditions and load impact, shock-absorbing and wear-resistant composite bushings were designed in key areas of the leaf springs of the vehicle's shock-absorbing components to improve the vehicle's shock-absorbing performance while preventing wear on key components. However, during the manufacturing process, the composite bushings often become out-of-round, resulting in large interference during press-fitting, and frequent quality issues such as bushing deformation and breakage.
[0003] In addition, some bushings have mounting holes on both ends that need to be installed into the ear holes of the leaf spring support rod at a certain angle. The current traditional method requires a part flip and a second press-fit process on a hydraulic press, and it is difficult to ensure angle accuracy and symmetry. Summary of the invention:
[0004] The technical problem to be solved by the utility model is to provide a press-fitting fixture for automobile leaf spring special-shaped composite bushings which can ensure the press-fitting quality and angle accuracy of the composite bushings.
[0005] The above object is achieved as follows: the device comprises a backing plate, which is mounted on a work surface of the equipment (hydraulic press); a substantially arc-shaped fixing block is provided on the left end of the upper surface of the backing plate, the fixing block is connected to the backing plate by bolts, the opening of the fixing block faces rightward, and a pair of corresponding positioning grooves are provided on the inner wall of the fixing block, one of the positioning grooves is located to the left of the radial centerline of the fixing block, and the other positioning groove is located to the right of the radial centerline of the fixing block;
[0006] A washer is provided on the pad located in the fixed block. During operation, the ear hole end of the leaf spring is placed sideways on the washer, and the leaf spring at this end contacts the inner wall of the fixed block to achieve position limiting of the leaf spring.
[0007] It also includes a pressing sleeve upper block, which is installed on the hydraulic piston rod of the equipment. The lower surface of the pressing sleeve upper block is provided with a bushing limiting groove recessed into the interior thereof, and the fixed block is located below the pressing sleeve upper block; after the leaf spring is placed, the special-shaped composite bushing is placed above the inner side of the ear hole of the spring leaf, and the protruding parts at both ends of the bushing are aligned with the two positioning grooves in the fixing seat, and the bushing limiting groove of the pressing sleeve upper block is aligned with the top of the special-shaped composite bushing.
[0008] A longitudinal groove is provided on the right side of the pad, and an L-shaped positioning block is installed in the groove, that is, the positioning block includes a vertical part and a horizontal part connected together. The positioning block can slide in the groove, and the horizontal part of the positioning block has a bolt. The positioning can be achieved by tightening the bolt of the positioning block.
[0009] The advantages of this utility model are as follows: the workpiece is placed sideways in the fixed block, and the other end of the spring is placed in front of the positioning block. The positioning block can be moved and adjusted to a position parallel to the leaf spring. When installing the upper block of the press sleeve, the upper block of the press sleeve is first aligned with the positioning groove of the fixed block below, and then the pressure head connected to the upper block of the press sleeve on the locking device is tightened. During operation, the pressure head first drives the upper block of the press sleeve to lift up, and the position of the positioning groove of the fixed block corresponding to either end of the special-shaped composite bushing is placed above the inner side of the ear hole of the spring, ensuring that the protrusions at both ends of the bushing are in the same direction as the positioning groove in the fixed seat. When the equipment is working, the upper block of the press sleeve is gently pressed onto the bushing to complete the press-fitting of the special-shaped composite open bushing.
[0010] The device has a simple structure, is easy to process and operate, has few wearing parts, is low in cost, is highly efficient, and saves manpower, thereby ensuring the accuracy and symmetry of the sleeve pressing angle. Description of the drawings:
[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0012] Figure 2 yes Figure 1 AA view;
[0013] Figure 3 yes Figure 2 A-direction view. Specific implementation method:
[0014] The following combination Figure 1-3 Further explain the utility model;
[0015] The utility model comprises a backing plate 1, which is mounted on the working surface of the equipment (oil hydraulic press); a substantially arc-shaped fixing block 3 is provided on the left end of the upper surface of the backing plate, and the fixing block is connected to the backing plate by bolts, with the opening of the fixing block facing the right side, and a pair of positioning grooves 8 are correspondingly provided on the inner wall of the fixing block, one of which is located to the left of the radial center line of the fixing block, and the other is located to the right of the radial center line of the fixing block;
[0016] A washer 2 is provided on the pad located in the fixed block. During operation, the ear hole end of the leaf spring 9 is placed sideways on the washer, and the leaf spring at this end contacts the inner wall of the fixed block to achieve position limiting of the leaf spring.
[0017] It also includes a press sleeve upper block 4, which is installed on the hydraulic piston rod of the equipment. The lower surface of the press sleeve upper block is provided with a bushing limit groove 5 recessed into the interior thereof, and the fixed block is located below the press sleeve upper block; after the leaf spring is placed, the special-shaped composite bushing 10 is placed above the inner side of the ear hole of the spring leaf, and the protruding parts at both ends of the bushing are aligned with the two positioning grooves in the fixing seat, and the bushing limit groove of the press sleeve upper block is aligned with the top of the special-shaped composite bushing.
[0018] The right side of the backing plate has a longitudinal groove, into which an L-shaped positioning block 7 is installed. This block consists of a vertical portion and a horizontal portion connected together, allowing the block to slide within the groove. The horizontal portion of the positioning block has a bolt 6, which is tightened to achieve positioning. Adjust the rear end of the leaf spring to be parallel to the positioning block.
[0019] The arc-shaped fixing block has various specifications. The inner rings of the fixing blocks of different specifications have different sizes to adapt to workpieces of different specifications and ensure that the workpieces can be attached to the inner wall of the fixing block after being placed therein.
[0020] Place the workpiece (steel leaf spring) within the fixed block, with the other end of the leaf spring positioned in front of the positioning block. The positioning block can be moved and adjusted to a position parallel to the leaf spring. When installing the upper block, first align the upper block with the positioning grooves of the lower fixed block, then tighten the pressure head connected to the upper block on the device. During operation, the pressure head first lifts the upper block, and positions either end of the special-shaped composite bushing corresponding to the positioning groove of the fixed block above the inner side of the ear hole of the leaf spring, ensuring that the protrusions at both ends of the bushing align with the positioning grooves in the fixed seat. Once the device is operating, gently press the upper block onto the bushing to complete the press-fit of the special-shaped composite open bushing.
[0021] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A press-fitting fixture for a special-shaped composite bushing of an automobile leaf spring, comprising a backing plate (1) mounted on a working surface of the device; wherein: A superior arc-shaped fixing block (3) is provided on the left end of the upper surface of the backing plate. The fixing block is connected to the backing plate by bolts. The opening of the fixing block faces the right side. A pair of positioning grooves (8) are correspondingly provided on the inner wall of the fixing block, one of which is located on the left side of the radial center line of the fixing block, and the other is located on the right side of the radial center line of the fixing block. A washer (2) is provided on the backing plate located inside the fixed block; It also includes a pressing sleeve upper block (4), which is mounted on the hydraulic piston rod of the equipment. The lower surface of the pressing sleeve upper block is provided with a bushing limiting groove (5) recessed into the interior thereof, and the fixed block is located below the pressing sleeve upper block; A longitudinal groove is provided on the right side of the pad, and an L-shaped positioning block (7) is installed in the groove, that is, the positioning block includes a vertical part and a horizontal part connected together, and the positioning block can slide in the groove. The horizontal part of the positioning block has a bolt (6), and the positioning can be achieved by locking the bolt of the positioning block.