Eccentric clamp of numerical control machine tool
By designing an automatic retractable limit block structure in the eccentric fixture of CNC machine tools, the problem of difficulty in adjusting when the workpieces of different sizes is fixed is solved, and higher convenience and efficiency are achieved.
Patent Information
- Application Number
- CN202421334047.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-06-12
AI Technical Summary
Conventional eccentric fixtures need to adjust the gaps of the limit blocks when fixing workpieces of different sizes, and are difficult to adjust without tools, resulting in inconvenience in use.
An eccentric fixture of CNC machine tool is designed, adopting structures such as fixing discs, fixing ropes, reeling rods, rotating blocks, connecting blocks, slots and springs. Through the coordination of reeling rods and rotating blocks, the automatic reeling and fixing of the limit block is achieved, simplifying the installation and disassembly of the workpiece.
The convenience and efficiency of eccentric fixtures when fixing workpieces of different sizes is improved, the difficulty of limit block adjustment is avoided, and the convenience of use is enhanced.
Smart Images
Figure CN222552874U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of eccentric clamps, and in particular to an eccentric clamp for a numerically controlled machine tool. Background Art
[0002] The eccentric clamp is a commonly used clamp, which is mainly used to clamp the workpiece for processing or assembly. The clamping principle of the eccentric clamp is to use the structure of the eccentric wheel or eccentric hole to clamp the workpiece through the eccentric distance. The use of the eccentric clamp can easily realize the rapid clamping of workpieces of different diameters, and can provide a large clamping force and clamping range. The eccentric clamp is widely used in mechanical processing, assembly, welding and other fields, especially in automated production lines and CNC machining centers and other high-efficiency production equipment. When the conventional eccentric clamp is used to fix the workpiece, the fixed disk is installed on the CNC machine tool, and the workpiece is fixed with the help of the limit block on the surface of the fixed disk.
[0003] With respect to the above-mentioned related technologies, the inventors believe that when conventional eccentric clamps are used to fix workpieces of different sizes, the gaps between the limit blocks must be adjusted according to the sizes of the workpieces, and when adjusting the conventional limit blocks, tools are needed to adjust the positions of the limit blocks. When there are no available tools around, it is difficult to adjust the limit blocks, which causes inconvenience during use.
[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content
[0005] In order to solve the problem that conventional eccentric clamps are inconvenient in fixing workpieces of different sizes, the present application provides an eccentric clamp for CNC machine tools.
[0006] The eccentric clamp of a CNC machine tool provided in this application adopts the following technical solution:
[0007] A CNC machine tool eccentric clamp comprises a fixed disk and a fixed rope, a limit block is slidably installed on the inner wall of the fixed disk, a groove matched with the fixed rope is opened on the inner wall of the limit block, one end of the fixed rope is fixedly connected to a winding rod, a connecting block is slidably installed on the surface of the winding rod, the top of the connecting block is welded to the bottom end of the fixed disk, a rotating block is fixedly installed on one end of the winding rod, the inner wall of the groove is clamped with the surface of the fixed rope, the surface of the fixed rope is slidably connected to the inner wall of the fixed disk, and the center of the rotating block and the center of the winding rod are on the same straight line.
[0008] Preferably, a fixing block is fixedly installed at one end of the connecting block, a limiting groove is provided on the inner wall of the fixing block, a clamping block is clamped on the inner wall of the limiting groove, the size specification of the clamping block surface is compatible with the size specification of the inner wall of the limiting groove, and one end of the clamping block is fixedly connected to one end of the winding rod.
[0009] Preferably, a first spring is fixedly mounted on one end of the clamping block, the center of the first spring is in the same straight line as the center of the winding rod, and a shielding cover is movably connected to the end of the first spring away from the clamping block, and one end of the shielding cover is fixedly mounted on one end of the fixed block.
[0010] Preferably, two sliders are slidably connected to the inner wall of the fixed disk, the two sliders are symmetrically distributed with the fixed disk as the axis, and a second spring is fixedly installed between the slider and the fixed disk.
[0011] Preferably, one end of the sliding block is rotatably connected to an auxiliary wheel, and the surface of the auxiliary wheel is slidably mounted on the surface of the fixing rope.
[0012] In summary, this application includes the following beneficial technical effects:
[0013] The cam is provided with a locking groove at one end of the limit block, and the inner wall of the locking groove is provided with a fixing rope, one end of the fixing rope is installed with a winding rod, and the surface of the winding rod is connected to the bottom of the fixing plate by means of a connecting block, and one end of the winding rod is installed with a rotating block, so that the winding rod can be controlled by the rotating block to tighten the fixing rope, thereby controlling the limit block to retract inwardly, which is more convenient when installing and disassembling the workpiece. A fixing block is installed at one end of the connecting block, and the limiting groove inside the fixing block is engaged with the locking block at one end of the winding rod, so that the winding rod can be fixed with the help of the fixing block and the locking block, which is convenient for keeping the limit block in a suitable position. A first spring is installed at one end of the locking block, and the first spring is connected to the fixing block by means of a shielding cover, so that the locking block can be pushed by the first spring, so as to avoid the situation where the locking block and the fixing block are separated due to the vibration generated after the CNC machine tool is started; compared with the prior art, the convenience of using the eccentric clamp is effectively improved;
[0014] 2. The second spring can also be installed on the inner wall of the fixed disk, and a slider is installed at one end of the second spring so that one end of the fixed rope can be pushed with the help of the slider, so that after the winding rod contacts the fixed rope, the fixed rope is loosened to facilitate the opening of the limit block, and an auxiliary wheel is installed on the inner wall of the slider, and the surface of the auxiliary wheel is slidably connected to the surface of the fixed rope, so that the friction between the fixed rope and the slider can be reduced with the help of the auxiliary wheel, which facilitates the retraction and release of the fixed rope; the convenience of using the device is effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of an eccentric clamp for a CNC machine tool according to an embodiment of the application;
[0016] Figure 2 is a schematic diagram of a fixing rope structure of an embodiment of the application;
[0017] Figure 3 is a side view schematic diagram of the structure of an embodiment of the application;
[0018] Figure 4 It is a schematic diagram of the structure at location A of an embodiment of the application.
[0019] Explanation of the accompanying drawings: 1. fixed plate; 2. limit block; 3. clamping slot; 4. fixed rope; 5. winding rod; 6. rotating block; 7. connecting block; 8. fixed block; 9. clamping block; 10. first spring; 10. second spring; 11. slider; 12. auxiliary wheel. DETAILED DESCRIPTION
[0020] The following is combined with Figure 1 —4 Provide further details of this application.
[0021] The present application embodiment discloses an eccentric clamp for a CNC machine tool, referring to Figure 1 - Figure 2 , including a fixed disk 1. When fixing the workpiece, the fixed disk 1 is installed on the CNC machine tool and a slot 3 is opened at one end of the limit block 2. The inner wall of the slot 3 is provided with a fixing rope 4. The surface of the fixing rope 4 is slidably connected with the inner wall of the fixed disk 1, and a winding rod 5 is installed at one end of the fixing rope 4. The surface of the winding rod 5 is connected to the bottom end of the fixed disk 1 by means of a connecting block 7. A rotating block 6 is installed at one end of the winding rod 5. The winding rod 5 is controlled to rotate by means of the rotating block 6 to tighten the fixing rope 4, thereby controlling the limit block 2 to shrink inward. The workpiece is fixed by means of the shrunk limit block 2, which is more convenient when installing and disassembling the workpiece.
[0022] Reference Figure 2 A fixing block 8 is installed at one end of the connecting block 7, and the limiting groove inside the fixing block 8 is clamped with the clamping block 9 at one end of the winding rod 5. The winding rod 5 is fixed with the help of the fixing block 8 and the clamping block 9, so that the limiting block 2 can be kept in a suitable position. A first spring 10 is installed at one end of the clamping block 9, and the first spring 10 is connected to the fixing block 8 with the help of a shielding cover, so that the clamping block 9 is pushed with the help of the first spring 10 to avoid the vibration after the CNC machine tool is started, which causes the clamping block 9 to separate from the fixing block 8. The shielding cover protects the surface of the first spring 10 to prevent the first spring 10 from being corroded by the outside world.
[0023] Reference Figure 3 - Figure 4, the second spring 11 is installed on the inner wall of the fixed disk 1, and a slider 12 is installed at one end of the second spring 11. The second spring 11 pushes the slider 12, and the slider 12 is used to squeeze one end of the fixing rope 4, so that after the winding rod 5 contacts the fixing rope 4, the fixing rope 4 is loosened, which is convenient for expanding the gap between the limit blocks 2. An auxiliary wheel 13 is installed on the inner wall of the slider 12, and the surface of the auxiliary wheel 13 is slidably connected to the surface of the fixing rope 4. The auxiliary wheel 13 is used to reduce the friction between the fixing rope 4 and the slider 12, which is convenient for the retraction and release of the fixing rope 4, and is more convenient when used.
[0024] The implementation principle of an eccentric clamp for a CNC machine tool in the embodiment of the present application is as follows: a slot 3 is provided at one end of a limit block 2, a fixing rope 4 is provided on the inner wall of the slot 3, a winding rod 5 is installed at one end of the fixing rope 4, and the surface of the winding rod 5 is connected to the bottom end of the fixed disk 1 by means of a connecting block 7, and a rotating block 6 is installed at one end of the winding rod 5, so that the winding rod 5 can be controlled by means of the rotating block 6 to tighten the fixing rope 4, thereby controlling the limit block 2 to retract inwardly, which is more convenient when installing and disassembling the workpiece, a fixing block 8 is installed at one end of the connecting block 7, and the limiting slot inside the fixing block 8 is engaged with a clamping block 9 at one end of the winding rod 5, so that the winding rod 5 can be fixed by means of the fixing block 8 and the clamping block 9, so as to facilitate keeping the limit block 2 in a suitable position, and a first spring 10 is installed at one end of the clamping block 9, and the first spring 10 is connected to the fixing block 8 by means of a shielding cover, so that the clamping block 9 can be pushed by means of the first spring 10, so as to avoid the vibration after the CNC machine tool is started, which causes the clamping block 9 to separate from the fixing block 8.
[0025] The second spring 11 can also be installed on the inner wall of the fixed disk 1, and a slider 12 is installed at one end of the second spring 11, so that one end of the fixing rope 4 can be pushed with the help of the slider 12, so that after the winding rod 5 contacts the fixing rope 4, the fixing rope 4 is loosened to facilitate the opening of the limit block 2, and an auxiliary wheel 13 is installed on the inner wall of the slider 12, and the surface of the auxiliary wheel 13 is slidably connected to the surface of the fixing rope 4, so that the friction between the fixing rope 4 and the slider 12 can be reduced with the help of the auxiliary wheel 13, so as to facilitate the retraction and release of the fixing rope 4.
[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An eccentric clamp for a numerically controlled machine tool, comprising a fixing plate (1) and a fixing rope (4), characterized in that: A limit block (2) is slidably mounted on the inner wall of the fixed disk (1); a slot (3) adapted to the fixed rope (4) is provided on the inner wall of the limit block (2); one end of the fixed rope (4) is fixedly connected to a winding rod (5); a connecting block (7) is slidably mounted on the surface of the winding rod (5); the top of the connecting block (7) is welded to the bottom of the fixed disk (1); and a rotating block (6) is fixedly mounted on one end of the winding rod (5).
2. The eccentric clamp for CNC machine tools according to claim 1, characterized in that: The inner wall of the clamping groove (3) is clamped with the surface of the fixing rope (4), the surface of the fixing rope (4) is slidably connected with the inner wall of the fixing plate (1), and the center of the rotating block (6) and the center of the winding rod (5) are on the same straight line.
3. The eccentric clamp for CNC machine tools according to claim 1, characterized in that: A fixing block (8) is fixedly mounted on one end of the connecting block (7), a limiting groove is provided on the inner wall of the fixing block (8), a clamping block (9) is clamped on the inner wall of the limiting groove, the size of the surface of the clamping block (9) matches the size of the inner wall of the limiting groove, and one end of the clamping block (9) is fixedly connected to one end of the winding rod (5).
4. The eccentric clamp for CNC machine tools according to claim 3, characterized in that: A first spring (10) is fixedly mounted on one end of the clamping block (9), the center of the first spring (10) and the center of the winding rod (5) are on the same straight line, and an end of the first spring (10) away from the clamping block (9) is movably connected to a shielding cover, and one end of the shielding cover is fixedly mounted on one end of the fixed block (8).
5. The eccentric clamp for CNC machine tools according to claim 1, characterized in that: The inner wall of the fixed disk (1) is slidably connected to two sliders (12), the two sliders (12) are symmetrically distributed with the fixed disk (1) as an axis, and a second spring (11) is fixedly installed between the slider (12) and the fixed disk (1).
6. The eccentric clamp for CNC machine tools according to claim 5, characterized in that: One end of the slider (12) is rotatably connected to an auxiliary wheel (13), and the surface of the auxiliary wheel (13) is slidably mounted on the surface of the fixing rope (4).