High-stability hydraulic clamp special for numerical control machining center

By designing lifting, translation, rotation, and changing mechanisms, the limitations of CNC machining fixtures in angle adjustment and clamping block replacement are solved, thereby improving machining accuracy and efficiency.

CN223997903UActive Publication Date: 2026-03-17CHUZHOU LIANHENG MACHINERY TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-02
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing CNC machining fixtures have limitations in angle adjustment and clamping block replacement, which affects machining accuracy and efficiency.

Method used

A hydraulic clamp was designed, which includes lifting, translation, rotation and changing mechanisms. These mechanisms enable multi-functional adjustment of the clamp and support angle rotation and clamp block replacement.

Benefits of technology

It enables multi-functional adjustment of the fixture, improves machining accuracy and efficiency, and adapts to different machining needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a high-stability hydraulic clamp special for a numerical control machining center. The high-stability hydraulic clamp comprises a machine body. The top of the machine body is fixedly connected with an adjusting assembly. The front face of the adjusting assembly is fixedly connected with a machining assembly. The top of the machine body is fixedly connected with a workbench. The outer side of the workbench is fixedly connected with a lifting mechanism. The lifting mechanism comprises a motor, the output end of the motor is fixedly connected with a rotating disc, the outer side of the rotating disc is fixedly connected with a sliding pin assembly, the surface of the sliding pin assembly is slidably connected with a transmission frame, and the inner side of the transmission frame is fixedly connected with a translation mechanism. Through the arrangement of the lifting mechanism, the translation mechanism, the rotating mechanism and the replacement mechanism, the phenomenon that a traditional clamp for numerical control machining has certain limitation in use is changed, all functions of the clamp can be adjusted according to different requirements of users, the functionality of the hydraulic clamp is greatly expanded, and convenience is provided for the users.
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Description

Technical Field

[0001] This utility model relates to the field of CNC fixture technology, specifically a high-stability hydraulic fixture for CNC machining centers. Background Technology

[0002] In CNC machine tool machining, fixtures need to ensure the position and stability of the workpiece during the machining process. A constant clamping force can prevent the workpiece from shifting and deforming, which is crucial for ensuring machining accuracy. In the high-speed and high-precision machining of CNC machine tools, any slight displacement or deformation may lead to machining errors, affecting the quality and performance of the product. Therefore, in CNC machine tool machining, fixtures should be selected and used reasonably to ensure machining quality and efficiency.

[0003] According to a patent published on the China Patent Network, the patent title is "A Fixture for CNC Machining," and the patent application number is 202221981377.6. This utility model discloses a fixture for CNC machining, including a base plate. An installation groove is formed on the upper surface of the base plate. A first threaded rod is rotatably connected to the inner walls of both sides of the installation groove. A moving rod is threadedly connected to the surface of the first threaded rod. A support rod is fixedly installed on the upper surface of the base plate. Fixed blocks are rotatably connected to the opposing surfaces of the support rod and the moving rod. Fixed grooves are formed on the opposing surfaces of the two fixed blocks. Several circular grooves are formed on the inner wall of the fixed grooves. Springs are fixedly installed on the inner walls of the circular grooves. A fixed rod is fixedly connected to the end of the spring away from the inner wall of the circular groove. In this CNC machining fixture, rotating the operating rod drives the first threaded rod to rotate. The moving rod, under the rotation of the first threaded rod, drives the right-side fixed block to move until the two fixed blocks clamp and fix the tubular workpiece. Furthermore, the fixed rod supports the tubular workpiece, preventing displacement during drilling. However, the aforementioned machining fixtures have certain limitations in use. They cannot be rotated at an angle, and the clamping blocks cannot be replaced.

[0004] Therefore, it is necessary to design and modify CNC machining fixtures to effectively prevent them from being unable to perform angle operations. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a highly stable hydraulic clamping fixture for CNC machining centers, which has the advantages of being able to rotate and quickly change clamping blocks, thus solving the problem of certain limitations in its use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-stability hydraulic clamping fixture for CNC machining centers, comprising a machine body;

[0007] An adjustment assembly is fixedly connected to the top of the unit;

[0008] The front of the adjustment component is fixedly connected to the processing component;

[0009] A worktable is fixedly connected to the top of the machine body;

[0010] A lifting mechanism is fixedly connected to the outside of the workbench;

[0011] The lifting mechanism includes a motor, the output end of which is fixedly connected to a turntable. A sliding pin assembly is fixedly connected to the outer side of the turntable. A transmission frame is slidably connected to the surface of the sliding pin assembly, and a translation mechanism is fixedly connected to the inner side of the transmission frame.

[0012] In a preferred embodiment of this utility model, the translation mechanism includes a limiting slide rail, the outer side of which is fixedly connected to the inner side of the transmission frame, a threaded rod movably connected to the top of the limiting slide rail, a transmission screw block threadedly connected to the surface of the threaded rod, the bottom of the transmission screw block slidingly connected to the inner wall of the limiting slide rail, a manual knob fixedly connected to the outer side of the threaded rod, and a rotating mechanism fixedly connected to the top of the transmission screw block.

[0013] In a preferred embodiment of this utility model, the rotating mechanism includes an outer slide frame, the bottom of which is fixedly connected to the top of the transmission screw block. An inner ring is slidably connected to the inner cavity of the outer slide frame, and a clamping assembly is fixedly connected to the inner side of the inner ring. A positioning hole is provided on the outer side of the outer slide frame, and an insert is provided through the outer side of the inner ring. A rotating plate is fixedly connected to the outer side of the insert, and a return spring is sleeved on the surface of the insert. A replacement mechanism is fixedly connected to the output end of the clamping assembly.

[0014] In a preferred embodiment of this utility model, the replacement mechanism includes a support plate, the inner side of which is fixedly connected to the output end of the clamp assembly, an installation strip is fixedly connected to the top of the support plate, an installation block is provided on the surface of the installation strip, and a clamping plate assembly is fixedly connected to the outer side of the installation block.

[0015] As a preferred embodiment of this invention, a reinforcing ring is fixedly connected to the inner side of the support plate, and the reinforcing ring is fixedly connected to the output end of the clamp assembly.

[0016] As a preferred embodiment of this invention, a limiting block is fixedly connected to the outer side of the transmission frame, and the back side of the limiting block is fixedly connected to the front side of the worktable.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model, by setting up a lifting mechanism, a translation mechanism, a rotation mechanism, and a replacement mechanism, changes the phenomenon that traditional CNC machining fixtures have certain limitations in use. It can adjust the various functions of the fixture according to the different needs of the user, greatly expanding the functionality of the hydraulic fixture and providing convenience for the user.

[0019] 2. This utility model, through the setting of the translation mechanism, can adjust the position of the clamp according to the user's needs, making it convenient for the user to adjust the position of the clamp.

[0020] 3. The present invention, through the setting of the rotating mechanism, enables users to easily adjust the angle of the clamp, providing convenience for users.

[0021] 4. This utility model, through the setting of the replacement mechanism, allows users to easily replace the clamping plates to cope with different processed objects.

[0022] 5. By setting the reinforcing ring, this utility model can reinforce the support plate and prevent it from separating from the clamp assembly.

[0023] 6. By setting a limiting block, this utility model can limit the movement of the transmission frame, ensuring more stable operation of the transmission frame. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a structural diagram of the lifting mechanism of this utility model;

[0026] Figure 3 This is a partial structural diagram of the lifting mechanism of this utility model;

[0027] Figure 4 This is a structural diagram of the translation mechanism of this utility model;

[0028] Figure 5 This is a structural diagram of the rotating mechanism of this utility model;

[0029] Figure 6 The structural diagram of the replacement mechanism for this utility model;

[0030] Figure 7 This utility model Figure 5 Enlarged view of the structure at point A in the middle.

[0031] In the diagram: 1. Machine body; 2. Adjustment assembly; 3. Processing assembly; 4. Worktable; 5. Lifting mechanism; 51. Motor; 52. Turntable; 53. Sliding pin assembly; 54. Transmission frame; 6. Translation mechanism; 61. Limiting slide rail; 62. Threaded rod; 63. Transmission screw block; 64. Manual knob; 7. Rotation mechanism; 71. External slide frame; 72. Internal ring; 73. Clamp assembly; 74. Positioning hole; 75. Insert strip; 76. Turning plate; 77. Return spring; 8. Replacement mechanism; 81. Support plate; 82. Mounting strip; 83. Mounting block; 84. Clamping plate assembly; 9. Reinforcing ring; 10. Limiting block. Detailed Implementation

[0032] 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.

[0033] like Figures 1 to 7 As shown, the present invention provides a high-stability hydraulic fixture for CNC machining centers, comprising a body 1;

[0034] An adjustment component 2 is fixedly connected to the top of the main body 1;

[0035] The front of the adjustment component 2 is fixedly connected to the processing component 3;

[0036] A worktable 4 is fixedly connected to the top of the machine body 1;

[0037] A lifting mechanism 5 is fixedly connected to the outside of the workbench 4;

[0038] The lifting mechanism 5 includes a motor 51, the output end of which is fixedly connected to a turntable 52, the outer side of which is fixedly connected to a sliding pin assembly 53, the surface of which is slidably connected to a transmission frame 54, and the inner side of which is fixedly connected to a translation mechanism 6.

[0039] refer to Figure 4 The translation mechanism 6 includes a limiting slide rail 61. The outer side of the limiting slide rail 61 is fixedly connected to the inner side of the transmission frame 54. A threaded rod 62 is movably connected to the top of the limiting slide rail 61. A transmission screw block 63 is threadedly connected to the surface of the threaded rod 62. The bottom of the transmission screw block 63 is slidably connected to the inner wall of the limiting slide rail 61. A manual knob 64 is fixedly connected to the outer side of the threaded rod 62. A rotating mechanism 7 is fixedly connected to the top of the transmission screw block 63.

[0040] As a technical optimization of this utility model, the position of the clamp can be adjusted according to the user's needs by setting the translation mechanism 6, which makes it convenient for the user to adjust the position of the clamp.

[0041] refer to Figure 5 The rotating mechanism 7 includes an outer slide frame 71, the bottom of which is fixedly connected to the top of the transmission screw block 63. An inner ring 72 is slidably connected to the inner cavity of the outer slide frame 71. A clamp assembly 73 is fixedly connected to the inner side of the inner ring 72. A positioning hole 74 is provided on the outer side of the outer slide frame 71. An insert 75 is provided through the outer side of the inner ring 72. A rotating plate 76 is fixedly connected to the outer side of the insert 75. A return spring 77 is sleeved on the surface of the insert 75. A replacement mechanism 8 is fixedly connected to the output end of the clamp assembly 73.

[0042] As a technical optimization of this utility model, the rotation mechanism 7 allows users to easily adjust the angle of the clamp, providing convenience for users.

[0043] refer to Figure 6 The replacement mechanism 8 includes a support plate 81. The inner side of the support plate 81 is fixedly connected to the output end of the clamp assembly 73. An installation strip 82 is fixedly connected to the top of the support plate 81. An installation block 83 is provided on the surface of the installation strip 82. A clamping plate assembly 84 is fixedly connected to the outer side of the installation block 83.

[0044] As a technical optimization of this utility model, the replacement mechanism 8 allows users to easily replace the clamping plate to handle different workpieces.

[0045] refer to Figure 6 A reinforcing ring 9 is fixedly connected to the inner side of the support plate 81, and the reinforcing ring 9 is fixedly connected to the output end of the clamp assembly 73.

[0046] As a technical optimization of this utility model, the reinforcement ring 9 can reinforce the support plate 81 and prevent it from separating from the clamp assembly 73.

[0047] refer to Figure 2 A limiting block 10 is fixedly connected to the outer side of the transmission frame 54, and the back of the limiting block 10 is fixedly connected to the front of the worktable 4.

[0048] As a technical optimization of this utility model, the setting of the limiting block 10 can limit the transmission frame 54, ensuring that the transmission frame 54 runs more stably.

[0049] The working principle and usage process of this utility model are as follows: First, when the user needs to adjust the height of the hydraulic clamp, simply start the motor 51. The output end of the motor 51 drives the turntable 52 to rotate. The turntable 52 drives the transmission frame 54 to move up and down through the sliding pin assembly 53 to adjust the height. When the user needs to adjust the horizontal position, simply rotate the manual knob 64. The manual knob 64 drives the threaded rod 62 to rotate. The threaded rod 62 drives the transmission screw block 63 to move left and right to adjust the horizontal position. When the user needs to rotate the angle, simply pull the rotating plate 76. The rotating plate 76 drives the insert 75 to move until it is separated from the positioning hole 74. Rotate the rotating plate 76 again. The rotating plate 76 drives the clamp assembly 73 to rotate to a suitable angle through the inner ring 72. Then release the return spring 77 of the rotating plate 76 and push the insert 75 to move into the state of being in contact with the positioning hole 74. The angle adjustment is complete. When it is necessary to replace the clamp assembly 84, simply pull the clamp assembly 84 upward. The clamp assembly 84 drives the mounting block 83 to move into the state of being separated from the mounting strip 82. Then move the new clamp assembly 84 and the mounting block 83 into the state of being in contact with the mounting strip 82 to achieve the effect of quickly replacing the clamp. Through the above operation, the various functions of the clamp can be adjusted according to the different needs of the user.

[0050] In summary, this highly stable hydraulic clamping fixture for CNC machining centers overcomes the limitations of traditional CNC machining fixtures by incorporating lifting, translation, rotation, and changing mechanisms. It allows users to adjust the various functions of the fixture according to their specific needs, greatly expanding the functionality of the hydraulic clamping fixture and providing greater convenience.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] 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 numerical control machining center special hydraulic clamp with high stability, comprising a machine body (1); The top of the machine body (1) is fixedly connected with an adjusting assembly (2); The front of the adjusting assembly (2) is fixedly connected with a machining assembly (3); The top of the machine body (1) is fixedly connected with a workbench (4); The outer side of the workbench (4) is fixedly connected with a lifting mechanism (5); Characterized in that: The lifting mechanism (5) comprises a motor (51), the output end of the motor (51) is fixedly connected with a rotating disc (52), the outer side of the rotating disc (52) is fixedly connected with a slide pin assembly (53), the surface of the slide pin assembly (53) is slidably connected with a transmission frame (54), and the inner side of the transmission frame (54) is fixedly connected with a translation mechanism (6).

2. The hydraulic clamp with high stability for CNC machining center according to claim 1, characterized in that: The translation mechanism (6) comprises a limiting slide rail (61), the outer side of the limiting slide rail (61) is fixedly connected with the inner side of the transmission frame (54), the top of the limiting slide rail (61) is movably connected with a threaded rod (62), the surface of the threaded rod (62) is threadedly connected with a transmission screw block (63), the bottom of the transmission screw block (63) is slidably connected with the inner wall of the limiting slide rail (61), the outer side of the threaded rod (62) is fixedly connected with a manual knob (64), and the top of the transmission screw block (63) is fixedly connected with a rotating mechanism (7).

3. The hydraulic clamp with high stability for CNC machining center according to claim 2, characterized in that: The rotating mechanism (7) comprises an external slide frame (71), the bottom of the external slide frame (71) is fixedly connected with the top of the transmission screw block (63), the inner cavity of the external slide frame (71) is slidably connected with an inner ring (72), the inner side of the inner ring (72) is fixedly connected with a clamp assembly (73), the outer side of the external slide frame (71) is provided with a positioning hole (74), the outer side of the inner ring (72) penetrates through a plug strip (75), the outer side of the plug strip (75) is fixedly connected with a rotating plate (76), the surface of the plug strip (75) is sleeved with a return spring (77), and the output end of the clamp assembly (73) is fixedly connected with a replacement mechanism (8).

4. The hydraulic clamp with high stability for CNC machining center according to claim 3, characterized in that: The replacement mechanism (8) comprises a supporting plate (81), the inner side of the supporting plate (81) is fixedly connected with the output end of the clamp assembly (73), the top of the supporting plate (81) is fixedly connected with a mounting strip (82), the surface of the mounting strip (82) is provided with a mounting block (83), and the outer side of the mounting block (83) is fixedly connected with a clamping plate assembly (84).

5. The hydraulic clamp with high stability for CNC machining center according to claim 4, characterized in that: The inner side of the supporting plate (81) is fixedly connected with a reinforcing ring (9), and the reinforcing ring (9) is fixedly connected with the output end of the clamp assembly (73).

6. The hydraulic fixture with high stability for CNC machining center according to claim 1, characterized in that: The outer side of the transmission frame (54) is fixedly connected with a limiting block (10), and the back of the limiting block (10) is fixedly connected with the front of the workbench (4).

Citation Information

Patent Citations

  • Clamp for numerical control machining

    CN217619133U