Numerical control machine tool clamp convenient to replace
By designing a combination of support base, support frame, adjusting screw, limiting structure and assembly structure, the problem of CNC machine tool fixture clamping plates cannot be quickly replaced is solved, realizing the quick disassembly and replacement of clamping plates, improving machining accuracy and maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SENRUN PRECISION TECH CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-14
AI Technical Summary
Existing CNC machine tool fixtures cannot quickly replace the clamping plates, causing the clamping plates to be worn or broken at the edges, affecting normal use.
A CNC machine tool fixture was designed, comprising a support base, a support frame, an adjusting screw, a clamping plate, a limiting structure, and an assembly structure. The clamping plate can be quickly disassembled and replaced through a combination of a positioning rod, a bearing, a control ring, and a threaded sleeve. A flexible connection between the support base and the support frame is achieved by using a combination of a rubber pad and a fixing screw.
It enables quick disassembly and replacement of clamping plates, avoiding the impact of wear or broken edges, and improving the maintenance efficiency and machining accuracy of the fixture.
Smart Images

Figure CN224115662U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fixture technology, specifically to a CNC machine tool fixture that is easy to replace. Background Technology
[0002] CNC machine tool fixtures are devices used on machine tools to clamp workpieces and guide cutting tools. They are specifically designed for the workpiece's processing steps and are characterized by their compact structure, ease of use, and labor-saving features. They can ensure high machining accuracy and production efficiency. Fixtures can ensure that the workpiece is fixed in position during the machining process, avoiding displacement and deformation caused by cutting forces, thereby improving machining accuracy and stability.
[0003] When using existing CNC machine tool fixtures, their function is to fix the workpiece to be processed and prevent the workpiece from shifting during cutting. However, existing machine tool fixtures cannot quickly replace the clamping plates, and when the clamping plates are worn or the edges are broken, it affects the normal use of the clamping plates. Utility Model Content
[0004] The purpose of this utility model is to provide a CNC machine tool fixture that is easy to replace, so as to solve the problem mentioned in the background art that the existing machine tool fixtures cannot quickly replace the clamping plate, and the clamping plate is affected by wear or broken edges, which affects the normal use of the clamping plate.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a CNC machine tool fixture that is easy to replace, comprising:
[0006] The device body includes a support base, a support frame is provided at the top of the support base, an adjusting screw is rotatably connected inside the support frame, and a clamping plate is movably connected to the outer surface of the adjusting screw;
[0007] One end of the support frame is connected to a limiting structure, which includes a fixing rod. A positioning rod is inserted inside the fixing rod. One end of the positioning rod is connected to a bearing, and one end of the bearing is connected to a control ring. The surface of the control ring is provided with a threaded sleeve.
[0008] Preferably, the adjusting screw and the clamp are rotatably connected by threads, and a positioning groove is provided on the surface of one end of the fixing rod, and one end of the positioning rod is inserted into the positioning groove of the fixing rod.
[0009] Preferably, a groove is provided at the center of the control ring, the bearing is disposed on one side of the inner wall of the groove in the control ring, and the positioning rod and the control ring are rotatably connected by a thread.
[0010] Preferably, the outer surface of the fixing rod is provided with threads, and the threaded sleeve is rotatably connected to the outer surface of one end of the fixing rod.
[0011] Preferably, the top surface of the support base is connected to both sides of an assembly structure, the assembly structure including a fixing pile, rubber pads connected to both sides of the fixing pile, a fixing screw connected to the surface of the fixing pile, and a nut rotatably connected to the outer surface of one end of the fixing screw.
[0012] Preferably, the bottom surface of the support frame has limit grooves on both sides, the fixing pile and the rubber pad are inserted into the limit grooves of the support frame, and the rubber pad is filled between the support base and the support frame for buffering.
[0013] Preferably, a through groove is provided on one side of the inner wall of the limiting groove of the support frame, and the fixing screw is inserted into the through groove of the support frame and slidably connected to the support frame. The fixing screw and the nut are rotatably connected by threads.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. By inserting one end of the positioning rod into the positioning groove of the fixed rod, the movement angle of the control ring is limited. The threaded sleeve connected to the surface of the control ring is rotatably connected to the outer surface of one end of the fixed rod. The threads are used to connect the two, and the bearings are used to ensure that the rotation of the control ring does not affect the angle of the positioning rod, thereby achieving the connection effect between the fixed rod and the control ring. The control ring is used to limit the clamping plate, so that it is always located on the outer surface of the support frame. When disassembling the clamping plate, the control ring is removed, thereby achieving quick disassembly of the clamping plate and avoiding the problem of the clamping plate being affected by wear or broken edges, which would affect the normal use of the clamping plate.
[0016] 2. By fitting the support frame onto the outer surface of the fixed pile and the rubber pad, and using the rubber pad to fill the space between the support base and the support frame for cushioning, flexible contact is achieved between the two. The fixing screw is inserted into the through groove opened in the support frame, and then the nut is rotated and connected to the outer surface of one end of the fixing screw. The nut is used to limit the fixing screw, thereby realizing the assembly function between the support base and the support frame. Attached Figure Description
[0017] Figure 1 This is a three-dimensional front view of the structure of this utility model;
[0018] Figure 2 This is a three-dimensional sectional view of the structure of this utility model.
[0019] Figure 3 This is a three-dimensional side view and cross-sectional view of the structure of this utility model;
[0020] Figure 4 This is a top view and partial cross-sectional perspective view of the structure of this utility model;
[0021] Figure 5 This is a partial sectional three-dimensional side view of the structure of this utility model.
[0022] In the diagram: 1. Device body; 11. Support base; 12. Support frame; 13. Adjusting screw; 14. Clamping plate; 2. Limiting structure; 21. Fixing rod; 22. Positioning rod; 23. Bearing; 24. Control ring; 25. Threaded sleeve; 3. Assembly structure; 31. Fixing pile; 32. Rubber pad; 33. Fixing screw; 34. Nut. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-5 One embodiment provided by this utility model:
[0025] An easily replaceable CNC machine tool fixture, comprising:
[0026] The device body 1 includes a support base 11, a support frame 12 is provided at the top of the support base 11, an adjusting screw 13 is rotatably connected inside the support frame 12, and a clamping plate 14 is movably connected to the outer surface of the adjusting screw 13. The internal material of the clamping plate 14 is existing technology and can be purchased on the market. It is not considered as a technical protection point of this application, so no further details are made.
[0027] One end of the support frame 12 is connected to a limiting structure 2. The limiting structure 2 includes a fixing rod 21. A positioning rod 22 is inserted inside the fixing rod 21. One end of the positioning rod 22 is connected to a bearing 23. One end of the bearing 23 is connected to a control ring 24. A threaded sleeve 25 is provided on the surface of the control ring 24.
[0028] Furthermore, the adjusting screw 13 and the clamping plate 14 are rotatably connected by threads. A positioning groove is opened on one end of the fixed rod 21, and one end of the positioning rod 22 is inserted into the positioning groove opened on the fixed rod 21. The positioning rod 22 is positioned by the positioning groove opened on the fixed rod 21, and the movement angle of the control ring 24 is limited by the positioning rod 22.
[0029] Furthermore, a groove is provided at the center of the control ring 24, and a bearing 23 is provided on one side of the inner wall of the groove in the control ring 24. The positioning rod 22 and the control ring 24 are movably connected by the bearing 23, so that the positioning rod 22 and the control ring 24 are connected by the bearing 23, and the angle of the positioning rod 22 is not affected when the control ring 24 rotates.
[0030] Furthermore, the outer surface of the fixing rod 21 is provided with threads, and the threaded sleeve 25 is rotatably connected to the outer surface of one end of the fixing rod 21, so as to realize the connection between the threaded sleeve 25 and the fixing rod 21 and to limit the control ring 24.
[0031] Furthermore, the top surface of the support base 11 is connected to both sides of the assembly structure 3. The assembly structure 3 includes a fixing pile 31, rubber pads 32 are connected to both sides of the fixing pile 31, a fixing screw 33 is connected to the surface of the fixing pile 31, and a nut 34 is rotatably connected to the outer surface of one end of the fixing screw 33, so as to realize the assembly function between the support base 11 and the support frame 12, so that the two can be disassembled and replaced.
[0032] Furthermore, limiting grooves are provided on both sides of the bottom surface of the support frame 12. The fixing pile 31 and the rubber pad 32 are inserted into the limiting grooves provided in the support frame 12. The rubber pad 32 is filled between the support base 11 and the support frame 12 for buffering, so that the two can make flexible contact through the filling of the rubber pad 32 between the support base 11 and the support frame 12.
[0033] Furthermore, a through groove is provided on one side of the inner wall of the limiting groove of the support frame 12. The fixing screw 33 is inserted into the through groove of the support frame 12 and is slidably connected to the support frame 12. The fixing screw 33 and the nut 34 are rotatably connected by threads, so as to realize the connection and fixation between the fixing screw 33 and the nut 34 by threads, and the nut 34 is used to limit the fixing screw 33.
[0034] Working principle: When replacing the CNC machine tool fixture, one end of the positioning rod 22 is inserted into the positioning groove of the fixed rod 21 to limit the movement angle of the control ring 24. The threaded sleeve 25 connected to the surface of the control ring 24 is rotatably connected to the outer surface of one end of the fixed rod 21. The two are connected by threads, and the bearing 23 is used to ensure that the rotation of the control ring 24 does not affect the angle of the positioning rod 22, thereby achieving the connection effect between the fixed rod 21 and the control ring 24. The control ring 24 limits the clamping plate 14, keeping it always located on the outer surface of the support frame 12. When disassembling the clamping plate 14, the control ring 24 is removed, thereby achieving quick disassembly of the clamping plate 14.
[0035] When assembling a CNC machine tool fixture that is easy to replace, the support frame 12 is sleeved on the outer surface of the fixed pile 31 and the rubber pad 32. The rubber pad 32 is used to fill the space between the support base 11 and the support frame 12 for buffering, so that the two make flexible contact. The fixing screw 33 is inserted into the through groove opened in the support frame 12. Then, the nut 34 is rotated and connected to the outer surface of one end of the fixing screw 33. The nut 34 is used to limit the fixing screw 33, thereby realizing the assembly function between the support base 11 and the support frame 12.
[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A CNC machine tool fixture that is easy to replace, characterized in that, include: The device body (1) includes a support base (11), a support frame (12) is provided at the top of the support base (11), an adjusting screw (13) is rotatably connected inside the support frame (12), and a clamping plate (14) is movably connected to the outer surface of the adjusting screw (13). One end of the support frame (12) is connected to a limiting structure (2). The limiting structure (2) includes a fixing rod (21). A positioning rod (22) is inserted inside the fixing rod (21). One end of the positioning rod (22) is connected to a bearing (23). One end of the bearing (23) is connected to a control ring (24). The surface of the control ring (24) is provided with a threaded sleeve (25).
2. The easily replaceable CNC machine tool fixture according to claim 1, characterized in that: The adjusting screw (13) and the clamp (14) are rotatably connected by threads. One end of the fixed rod (21) has a positioning groove, and one end of the positioning rod (22) is inserted into the positioning groove of the fixed rod (21).
3. The easily replaceable CNC machine tool fixture according to claim 1, characterized in that: The control ring (24) has a groove at its center, and the bearing (23) is located on one side of the inner wall of the groove in the control ring (24). The positioning rod (22) and the control ring (24) are connected by a thread for rotation.
4. The easily replaceable CNC machine tool fixture according to claim 1, characterized in that: The outer surface of the fixing rod (21) is provided with threads, and the threaded sleeve (25) is rotatably connected to the outer surface of one end of the fixing rod (21).
5. The easily replaceable CNC machine tool fixture according to claim 1, characterized in that: The top surface of the support base (11) is connected to the two sides of the assembly structure (3). The assembly structure (3) includes a fixing pile (31). Rubber pads (32) are connected to both sides of the fixing pile (31). A fixing screw (33) is connected to the surface of the fixing pile (31). A nut (34) is rotatably connected to the outer surface of one end of the fixing screw (33).
6. The easily replaceable CNC machine tool fixture according to claim 5, characterized in that: The support frame (12) has limit grooves on both sides of its bottom surface. The fixing pile (31) and the rubber pad (32) are inserted into the limit grooves of the support frame (12). The rubber pad (32) is filled between the support base (11) and the support frame (12) for buffering.
7. A replaceable CNC machine tool fixture according to claim 5, characterized in that: The support frame (12) has a through groove on one side of the limiting groove. The fixing screw (33) is inserted into the through groove of the support frame (12) and is slidably connected to the support frame (12). The fixing screw (33) and the nut (34) are rotatably connected by threads.