Hydraulic clamping mechanism with buffering function
By designing a hydraulic clamping mechanism with a buffer function, and adopting a coupled embracing clamping structure and a buffer decompression fitting component, the problem of surface protection of cylindrical workpieces by the hydraulic clamping mechanism is solved, achieving the effect of stable clamping and surface protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENYANG UNIV OF CHEM TECH KE YA COLLEGE
- Filing Date
- 2025-03-04
- Publication Date
- 2026-05-12
AI Technical Summary
Conventional hydraulic clamping mechanisms are prone to causing scratches or indentations on the surface of cylindrical workpieces when clamping them, affecting the processing quality and appearance and limiting their application in high-end manufacturing.
A hydraulic clamping mechanism with a buffer function was designed. It adopts a coupled embracing clamping structure and a buffer decompression fitting component, including a semi-circular clamping block, a buffer spring and a fitting module block. The hydraulic push rod drives the transmission link to deflect, so that the clamping push block approaches and clamps the workpiece in a buffering manner to prevent friction and crushing.
It achieves stable clamping and surface protection of the workpiece, avoids damage after processing, ensures a perfect and flawless appearance of the workpiece, and improves processing quality.
Smart Images

Figure CN224223338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydraulic clamping mechanism technology, specifically a hydraulic clamping mechanism with a buffer function. Background Technology
[0002] Hydraulic clamping mechanisms, as highly efficient drive fixtures, are widely used in workpiece clamping and release operations. Their operating mechanism is ingenious: a hydraulic pump drives hydraulic oil into a hydraulic cylinder, which then moves, transmitting oil pressure to the clamp to securely clamp the workpiece. Upon release, a control valve cuts off the oil flow, the oil inside the clamp is discharged, and the clamp resets. Hydraulic clamping mechanisms are particularly favored in the machining of cylindrical parts due to their superior clamping performance. However, conventional designs often focus on improving clamping efficiency while neglecting the meticulous protection and pressure reduction treatment of the workpiece surface. This oversight often results in scratches on the workpiece surface after machining. Indentations or marks not only damage the appearance and texture of products, but also pose a challenge to the quality of precision machining, limiting their application potential in high-end manufacturing. Therefore, optimizing the hydraulic clamping mechanism and strengthening its ability to protect the surface of cylindrical workpieces to reduce unnecessary damage has become the key to improving machining quality and aesthetics. Achieving the dual goals of efficient clamping and gentle care through technological innovation is an important direction for promoting continuous progress in this field. While existing technologies may already have solutions to the above problems, this case aims to provide an alternative or replacement technical solution. Utility Model Content
[0003] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic clamping mechanism with a buffer function, comprising: a mechanism base, a pair of mounting blocks, and a supporting frame, wherein the supporting frame is mounted on the mechanism base, the pair of mounting blocks are respectively mounted on the mechanism base, and a coupling embracing clamping structure is mounted on the supporting frame, wherein the coupling embracing clamping structure comprises: a hydraulic system mounting groove, a hydraulic push rod, a transmission shaped block, a pair of block guide grooves, a pair of transmission push columns, a pair of connecting rod deflection shafts, a pair of transmission connecting rods, and a pair of clamping push blocks;
[0004] The supporting frame is provided with a hydraulic system mounting slot. The hydraulic push rod is mounted on the mechanism base and inserted into the hydraulic system mounting slot. A pair of block guide slots are provided on the transmission shaped block. A pair of transmission push columns are movably inserted into the pair of block guide slots and are respectively mounted on a pair of transmission connecting rods. A pair of connecting rod deflection shafts are respectively mounted on the supporting frame and are respectively connected to a pair of transmission connecting rods. A pair of clamping push blocks are respectively mounted on a pair of transmission connecting rods via shafts. A buffer pressure reduction fitting component is installed on each pair of clamping push blocks.
[0005] It should be noted that, as described above, the mechanism base is fixed in the working position by a pair of mounting blocks and their connecting flanges. Then, the cylindrical workpiece to be clamped is placed on the buffer pressure relief fitting assembly, and the hydraulic push rod in the hydraulic system mounting slot is extended, which in turn pushes the transmission block. This causes the guide groove on the pair of blocks to drive the pair of transmission push rods, which in turn causes the transmission connecting rod to deflect by the connecting rod deflection shaft. This causes the clamping push blocks to move closer to each other, so that the buffer pressure relief fitting assembly tightly clamps the cylindrical workpiece. The anti-slip mat on the mechanism base makes the entire clamping mechanism more stable when placed in the working position, and the dust cover on the hydraulic system mounting slot protects the hydraulic push rod in the hydraulic system mounting slot from dust.
[0006] Preferably, the buffer pressure relief bonding assembly includes: a pair of semi-circular clamping blocks, a plurality of buffer springs, and a plurality of bonding module blocks;
[0007] A pair of the semi-circular clamping blocks are respectively mounted on a pair of clamping push blocks, a plurality of buffer springs are respectively mounted on a pair of the semi-circular clamping blocks, and a plurality of fitting module blocks are respectively mounted on a plurality of buffer springs;
[0008] It should be noted that, as described above, when the pair of clamping push blocks approach each other, the pair of semi-circular clamping blocks approach each other, which in turn causes multiple bonding module blocks to first contact the surface of the cylindrical workpiece. As the pair of semi-circular clamping blocks continue to approach each other, multiple buffer springs provide cushioning, and multiple bonding module blocks will be bonded to the surface of the cylindrical workpiece in an alternating manner. The anti-scratch pads set on the bonding module blocks are generally made of silicone, so that the workpiece is securely clamped and fixed while being protected from friction and pressure damage.
[0009] Preferably, the mounting block is provided with a connecting flange.
[0010] Preferably, the base of the mechanism is provided with an anti-slip mat;
[0011] Preferably, the hydraulic system mounting slot is equipped with a dust cover;
[0012] Preferably, the bonding module block is provided with anti-scratch pads.
[0013] Beneficial effects
[0014] This utility model provides a hydraulic clamping mechanism with a buffer function. It offers the following advantages compared to existing technologies: This clamping mechanism, through a coupled embracing clamping structure, ensures that cylindrical workpieces can be firmly and securely clamped and positioned. Specifically, the mechanism utilizes buffer and pressure-reducing fitting components on pairs of clamping push blocks. These components not only maintain the high stability of the workpiece during clamping but also implement comprehensive protection and safeguarding strategies for the clamping area. This innovative design effectively avoids damage to the workpiece caused by excessive squeezing or scratching, ensuring that the workpiece maintains a flawless appearance after processing. Attached Figure Description
[0015] Figure 1 This is a front sectional view of the hydraulic clamping mechanism with buffer function described in this utility model.
[0016] Figure 2 for Figure 1 A magnified view of the letter "A" in the diagram.
[0017] In the diagram: 1. Mechanism base; 2. Mounting and retaining block; 3. Supporting and mounting frame; 4. Hydraulic system mounting groove; 5. Hydraulic push rod; 6. Transmission irregular block; 7. Guide groove on the block; 8. Transmission push column; 9. Connecting rod deflection shaft; 10. Transmission connecting rod; 11. Clamping push block; 12. Semi-arc clamping block; 13. Buffer spring; 14. Fitting module block. Detailed Implementation
[0018] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0019] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.
[0020] Example
[0021] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-2As shown, a hydraulic clamping mechanism with a buffer function includes: a mechanism base 1, a pair of mounting and fixing blocks 2, and a supporting and fixing frame 3. The supporting and fixing frame 3 is mounted on the mechanism base 1, and the pair of mounting and fixing blocks 2 are respectively mounted on the mechanism base 1. A coupling and embracing clamping structure is installed on the supporting and fixing frame 3. The coupling and embracing clamping structure includes: a hydraulic system mounting groove 4, a hydraulic push rod 5, a transmission shaped block 6, a pair of block guide grooves 7, a pair of transmission push columns 8, a pair of connecting rod deflection shafts 9, a pair of transmission connecting rods 10, and a pair of clamping push blocks 11. The hydraulic system mounting groove 4 is provided on the supporting and fixing frame 3, and the hydraulic push rod 5 is mounted on the mechanism base 1 and inserted into the hydraulic system mounting groove 4. The transmission shaped block 6 is respectively provided with a pair of block guide grooves 7, and the pair of transmission push rods 8 are respectively provided with a pair of block guide grooves 7, and a pair of transmission push rods 8. The columns 8 are respectively movably inserted into the guide grooves 7 on the pair of blocks, and the pair of transmission push columns 8 are respectively mounted on the pair of transmission connecting rods 10. The pair of connecting rod deflection shafts 9 are respectively mounted on the support frame 3, and the pair of connecting rod deflection shafts 9 are respectively connected to the pair of transmission connecting rods 10. The pair of clamping push blocks 11 are respectively mounted on the pair of transmission connecting rods 10 through shafts. The pair of clamping push blocks 11 are respectively equipped with buffer pressure relief fitting components. The buffer pressure relief fitting components include: a pair of semi-circular clamping blocks 12, a plurality of buffer springs 13, and a plurality of fitting module blocks 14. The pair of semi-circular clamping blocks 12 are respectively mounted on the pair of clamping push blocks 11, the plurality of buffer springs 13 are respectively mounted on the pair of semi-circular clamping blocks 12, and the plurality of fitting module blocks 14 are respectively mounted on the plurality of buffer springs 13.
[0022] According to the appendix Figure 1-2It is found that the mechanism base 1 is fixed in the working position by a pair of mounting blocks 2 and their connecting flanges. Then, the cylindrical workpiece to be clamped is placed on the buffer pressure relief fitting assembly. The hydraulic push rod 5 in the hydraulic system mounting groove 4 is extended, which pushes the transmission block 6. This causes the guide groove 7 on the block to drive the pair of transmission push rods 8, which in turn causes the transmission connecting rod 10 to deflect by the connecting rod deflection shaft 9. This causes the clamping push blocks 11 to move closer to each other, so that the buffer pressure relief fitting assembly tightly clamps the cylindrical workpiece. The anti-slip mat on the mechanism base 1 allows the entire clamping mechanism to be placed in the working position. The system is more stable. The dust cover on the hydraulic system mounting slot 4 can protect the hydraulic push rod 5 inside the hydraulic system mounting slot 4 from dust. When the pair of clamping push blocks 11 approach each other, the pair of semi-circular clamping blocks 12 approach each other, which in turn causes multiple bonding module blocks 14 to contact the surface of the cylindrical workpiece first. As the pair of semi-circular clamping blocks 12 continue to approach each other, multiple buffer springs 13 will provide buffering, and multiple bonding module blocks 14 will be bonded to the surface of the cylindrical workpiece in an alternating manner. The anti-scratching pads on the bonding module blocks 14 are generally made of silicone, so that the workpiece is securely clamped and fixed while avoiding friction and pressure damage.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A hydraulic clamping mechanism with a buffer function, comprising: The system comprises a base, a pair of mounting blocks, and a supporting frame, wherein the supporting frame is mounted on the base, the pair of mounting blocks are respectively mounted on the base, and a coupling clamping structure is mounted on the supporting frame. The coupling clamping structure includes: a hydraulic system mounting groove, a hydraulic push rod, a transmission shaped block, a pair of block guide grooves, a pair of transmission push columns, a pair of connecting rod deflection shafts, a pair of transmission connecting rods, and a pair of clamping push blocks. The supporting frame has a hydraulic system mounting slot. The hydraulic push rod is mounted on the base of the mechanism and inserted into the hydraulic system mounting slot. The transmission block has a pair of block guide slots. A pair of transmission push columns are movably inserted into the pair of block guide slots and are mounted on a pair of transmission connecting rods. A pair of connecting rod deflection shafts are mounted on the supporting frame and are connected to the pair of transmission connecting rods. A pair of clamping push blocks are mounted on the pair of transmission connecting rods via shafts. A buffer pressure relief fitting assembly is installed on each pair of clamping push blocks.
2. The hydraulic clamping mechanism with buffer function according to claim 1, characterized in that, The buffer pressure relief bonding assembly includes: a pair of semi-circular clamping blocks, several buffer springs, and several bonding module blocks; A pair of semi-circular clamping blocks are respectively mounted on a pair of clamping push blocks, a plurality of buffer springs are respectively mounted on a pair of semi-circular clamping blocks, and a plurality of fitting module blocks are respectively mounted on a plurality of buffer springs.
3. A hydraulic clamping mechanism with a buffer function according to claim 2, characterized in that, The mounting block is provided with a connecting flange.
4. A hydraulic clamping mechanism with a buffer function according to claim 3, characterized in that, The base of the mechanism is equipped with an anti-slip mat.
5. A hydraulic clamping mechanism with a buffer function according to claim 4, characterized in that, The hydraulic system mounting slot is equipped with a dustproof cover.
6. A hydraulic clamping mechanism with a buffer function according to claim 5, characterized in that, The bonding module block is equipped with anti-scratch pads.