Positioning tool of numerical control machine tool

Abstract

The utility model relates to the technical field of positioning tools, in particular to a positioning tool of a numerical control machine tool, which comprises a supporting base, a mounting frame is arranged on the surface of the top end of the supporting base, a hydraulic rod is connected to the inner surface of the mounting frame, fixing rods are connected to two sides of the top end of the hydraulic rod, and a torsion spring is connected to one side of each fixing rod. One end of the torsion spring is connected with a clamping plate, and the other side of the fixing rod is connected with a first screw rod. The nut is rotationally connected to the outer surface of one end of the first screw rod, a workpiece is placed between the clamping plates, then the clamping plates move towards the interior of the mounting frame through contraction of the hydraulic rod, so that the clamping plates are in a vertical state, the clamping range of the clamping plates is reduced, and the workpiece is clamped and fixed; and the problems that the manual operation efficiency is low, meanwhile, the hand needs to stretch into the machine tool for operation, and potential safety hazards exist are solved.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, specifically a positioning tooling for a CNC machine tool. Background Technology

[0002] Positioning fixtures for CNC machine tools can limit the position of the workpiece before it is fixed, ensuring that the workpiece is directly below the machining components and preventing positional deviation during machining, thereby improving machining accuracy. Through clamping and positioning, positioning fixtures can effectively prevent the workpiece from shaking during machining, ensuring the stability of the workpiece during machining, and thus improving machining quality.

[0003] When using existing positioning fixtures for CNC machine tools, the purpose of these fixtures is to clamp and position the workpiece. The existing positioning fixtures are adjusted by fixing the angle of the fixture with screws. This method requires manual operation, which is inefficient and requires reaching into the machine tool to operate, posing a safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for CNC machine tools, so as to solve the problem mentioned in the background art that the existing positioning fixtures use screws to fix the angle of the clamp during adjustment. This method requires manual operation, which is inefficient and requires the user to put their hand into the machine tool, posing a safety hazard.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning fixture for a CNC machine tool, comprising a support base:

[0006] The top surface of the support base is provided with a mounting bracket, the inner surface of the mounting bracket is connected to a hydraulic rod, the top two sides of the hydraulic rod are connected to fixing rods, one side of the fixing rod is connected to a torsion spring, one end of the torsion spring is connected to a clamping plate, the other side of the fixing rod is connected to a first screw, one end of the first screw is rotatably connected to a nut, and one end of the nut is provided with a ball ring.

[0007] Preferably, the bottom end of the hydraulic rod is connected to one side of the inner surface of the mounting frame, and the fixing rod and the clamping plate are elastically connected by a torsion spring.

[0008] Preferably, a threaded hole is provided on one side of the fixing rod, and one end of the first screw is rotatably connected to the threaded hole provided in the fixing rod. Sliding grooves are provided on both sides of the inner surface of the mounting bracket, and the bottom end of the clamping plate is inserted into the sliding groove provided in the mounting bracket.

[0009] Preferably, a through groove is provided on one side of the inner wall of the sliding groove of the mounting bracket, the first screw is inserted into the through groove of the mounting bracket and slidably connected to the mounting bracket, the first screw and the nut are rotatably connected by threads, and the ball ring is located between the mounting bracket and the nut to reduce the friction between the two.

[0010] Preferably, positioning rods are inserted inside both sides of the bottom end of the mounting bracket. A compression spring is connected to one side of the inner surface of the positioning rod. A rectangular frame is connected to one end of the compression spring. A second screw is inserted inside one end of the rectangular frame. A nut is rotatably connected to the outer surface of one end of the second screw.

[0011] Preferably, the positioning rod is connected to one side of the top surface of the support base, and positioning grooves are provided on both sides of the bottom surface of the mounting bracket. The top of the positioning rod is inserted into the positioning groove provided in the mounting bracket, and a groove is provided on one side of the positioning rod. One end of the compression spring is connected to one side of the inner wall of the groove provided in the positioning rod.

[0012] Preferably, the mounting bracket has limit grooves on both sides of the inner wall of the positioning groove, the rectangular frame is inserted into the limit grooves on both sides of the mounting bracket, one end of the second screw is connected to one side surface of the mounting bracket, and the second screw and the nut are rotatably connected by threads.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By rotating the nut to the outer surface of one end of the first screw, the friction between the mounting bracket and the nut is reduced by the ball ring. Then, the hydraulic rod is activated to extend it, thereby driving the clamping plate to slide inside the groove opened in the mounting bracket, and causing the first screw to move inside the through groove opened in the mounting bracket, limiting the movement of the fixing rod. When the clamping plate moves out of the groove opened in the mounting bracket, the torsion spring drives the clamping plate to twist, thereby expanding the clamping range of the clamping plate. The workpiece is placed between the clamping plates, and then the hydraulic rod retracts, causing the clamping plate to move into the mounting bracket, so that the angle of the clamping plate is vertical, reducing the clamping range of the clamping plate, thereby achieving the effect of clamping and fixing the workpiece. This avoids the problems of low efficiency of manual operation and the need to put hands into the machine tool for operation, which poses safety hazards.

[0015] 2. By fitting the mounting bracket onto the outer surface of the positioning rod, the positioning rod is inserted into the positioning groove of the mounting bracket. By adjusting the position of the rectangular frame, the compression spring is extended, thereby inserting both sides of the rectangular frame into the limiting groove of the mounting bracket, positioning the support base and the mounting bracket. The second screw is then inserted into the rectangular frame, and the nut is rotated and connected to the outer surface of one end of the nut. The nut, in conjunction with the mounting bracket, clamps and fixes the rectangular frame. The elasticity of the compression spring does not affect the stability, thus achieving the assembly effect between the support base and the mounting bracket. Attached Figure Description

[0016] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0017] Figure 2 This is a three-dimensional sectional view of the structure of this utility model.

[0018] Figure 3 This is a partial sectional three-dimensional side view of the structure of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged 3D structural diagram at point A;

[0020] Figure 5 This is a partial cross-sectional perspective view of the structure of this utility model from below.

[0021] In the diagram: 11. Support base; 12. Mounting bracket; 13. Hydraulic rod; 14. Fixing rod; 15. Torsion spring; 16. Clamping plate; 17. First screw; 18. Nut; 19. Ball ring; 20. Positioning rod; 21. Compression spring; 22. Rectangular frame; 23. Second screw; 24. Nut. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-5 One embodiment provided by this utility model:

[0024] A positioning fixture for a CNC machine tool includes a support base 11:

[0025] A mounting bracket 12 is provided on the top surface of the support base 11. A hydraulic rod 13 is connected to the inner surface of the mounting bracket 12. Fixing rods 14 are connected to both sides of the top of the hydraulic rod 13. A torsion spring 15 is connected to one side of the fixing rod 14. A clamping plate 16 is connected to one end of the torsion spring 15. A first screw 17 is connected to the other side of the fixing rod 14. A nut 18 is rotatably connected to the outer surface of one end of the first screw 17. A ball ring 19 is provided on the surface of one end of the nut 18. The internal material of the support base 11 is existing technology and can be purchased on the market. It is not considered as a technical protection point of this application. Therefore, no further details are provided.

[0026] Furthermore, the bottom end of the hydraulic rod 13 is connected to one side of the inner surface of the mounting bracket 12, and the fixing rod 14 and the clamping plate 16 are elastically connected by a torsion spring 15, so that the fixing rod 14 and the clamping plate 16 are elastically connected by the torsion spring 15, and the angle of the fixing rod 14 is not affected when the clamping plate 16 rotates.

[0027] Furthermore, a threaded hole is provided on one side of the fixing rod 14, and one end of the first screw 17 is rotatably connected to the threaded hole provided in the fixing rod 14. Slide grooves are provided on both sides of the inner surface of the mounting bracket 12, and the bottom end of the clamping plate 16 is inserted into the slide groove provided in the mounting bracket 12, so that the bottom end of the clamping plate 16 is positioned by the slide groove provided in the mounting bracket 12, so that the clamping plate 16 remains vertically moving.

[0028] Furthermore, a through groove is provided on one side of the inner wall of the sliding groove of the mounting bracket 12. The first screw 17 is inserted into the through groove of the mounting bracket 12 and is slidably connected to the mounting bracket 12. The first screw 17 and the nut 18 are rotatably connected by threads. The ball ring 19 is located between the mounting bracket 12 and the nut 18 to reduce the friction between the two, so that when the nut 18 rotates through the ball ring 19, it will not rub against the mounting bracket 12 and cause wear between the two.

[0029] Furthermore, positioning rods 20 are inserted inside the bottom two sides of the mounting bracket 12. A compression spring 21 is connected to one side of the inner surface of the positioning rod 20. A rectangular frame 22 is connected to one end of the compression spring 21. A second screw 23 is inserted inside one end of the rectangular frame 22. A nut 24 is rotatably connected to the outer surface of one end of the second screw 23. The nut 24 is used to clamp and fix the rectangular frame 22 with the mounting bracket 12, thereby assembling the support base 11 and the mounting bracket 12.

[0030] Furthermore, the positioning rod 20 is connected to one side of the top surface of the support base 11, and positioning grooves are provided on both sides of the bottom surface of the mounting bracket 12. The top of the positioning rod 20 is inserted into the positioning groove provided in the mounting bracket 12, and a groove is provided on one side of the positioning rod 20. One end of the compression spring 21 is connected to one side of the inner wall of the groove provided in the positioning rod 20, so that the compression spring 21 is limited by the groove provided in the positioning rod 20, thereby connecting the positioning rod 20 and the rectangular frame 22.

[0031] Furthermore, the mounting bracket 12 has limit grooves on both sides of the inner wall of the positioning groove. The rectangular frame 22 is inserted into the limit grooves on both sides of the mounting bracket 12. One end of the second screw 23 is connected to one side surface of the mounting bracket 12. The second screw 23 and the nut 24 are connected by a thread, so that the second screw 23 and the nut 24 are connected and fixed by the thread, thereby using the nut 24 to restrict the rectangular frame 22.

[0032] Working principle: When adjusting the positioning fixture of the CNC machine tool, the nut 18 is rotated and connected to the outer surface of one end of the first screw 17. The ball ring 19 reduces the friction between the mounting frame 12 and the nut 18. Then, the hydraulic rod 13 is activated to extend it, thereby driving the clamping plate 16 to slide inside the groove opened in the mounting frame 12, and causing the first screw 17 to move inside the through groove opened in the mounting frame 12, limiting the movement of the fixing rod 14. When the clamping plate 16 moves out of the groove opened in the mounting frame 12, the torsion spring 15 drives the clamping plate 16 to twist, thereby expanding the clamping range of the clamping plate 16. The workpiece is placed between the clamping plates 16. Then, by the retraction of the hydraulic rod 13, the clamping plate 16 moves into the mounting frame 12, thereby making the angle of the clamping plate 16 vertical and reducing the clamping range of the clamping plate 16, thus achieving the effect of clamping and fixing the workpiece.

[0033] When assembling the positioning fixture for a CNC machine tool, the mounting bracket 12 is sleeved onto the outer surface of the positioning rod 20, allowing the positioning rod 20 to be inserted into the positioning groove opened in the mounting bracket 12. By adjusting the position of the rectangular frame 22, the compression spring 21 is extended, thereby inserting both sides of the rectangular frame 22 into the limiting groove opened in the mounting bracket 12, positioning the support base 11 and the mounting bracket 12. The second screw 23 is inserted into the rectangular frame 22, and the nut 24 is rotatably connected to the outer surface of one end of the nut 24. The nut 24, in conjunction with the mounting bracket 12, clamps and fixes the rectangular frame 22. The elasticity of the compression spring 21 does not affect the stability, thus achieving the assembly effect between the support base 11 and the mounting bracket 12.

[0034] 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 positioning fixture for a CNC machine tool, comprising a support base (11), characterized in that: The top surface of the support base (11) is provided with a mounting bracket (12), the inner surface of the mounting bracket (12) is connected with a hydraulic rod (13), the top two sides of the hydraulic rod (13) are connected with fixing rods (14), one side of the fixing rod (14) is connected with a torsion spring (15), one end of the torsion spring (15) is connected with a clamp (16), the other side of the fixing rod (14) is connected with a first screw (17), one end of the first screw (17) is rotatably connected with a nut (18), and one end of the nut (18) is provided with a ball ring (19).

2. The positioning fixture for a CNC machine tool according to claim 1, characterized in that: The bottom end of the hydraulic rod (13) is connected to one side of the inner surface of the mounting bracket (12), and the fixing rod (14) and the clamping plate (16) are elastically connected by a torsion spring (15).

3. The positioning fixture for a CNC machine tool according to claim 1, characterized in that: The fixing rod (14) has a threaded hole on one side, and one end of the first screw (17) is rotatably connected to the threaded hole of the fixing rod (14). The mounting bracket (12) has sliding grooves on both sides of its inner surface, and the bottom end of the clamping plate (16) is inserted into the sliding groove of the mounting bracket (12).

4. The positioning fixture for a CNC machine tool according to claim 1, characterized in that: The mounting bracket (12) has a through groove on one side of the inner wall of the sliding groove. The first screw (17) is inserted into the through groove of the mounting bracket (12) and is slidably connected to the mounting bracket (12). The first screw (17) and the nut (18) are rotatably connected by threads. The ball ring (19) is located between the mounting bracket (12) and the nut (18) to reduce the friction between them.

5. The positioning fixture for a CNC machine tool according to claim 1, characterized in that: Positioning rods (20) are inserted inside the bottom two sides of the mounting bracket (12). A compression spring (21) is connected to one side of the inner surface of the positioning rod (20). A rectangular frame (22) is connected to one end of the compression spring (21). A second screw (23) is inserted inside one end of the rectangular frame (22). A nut (24) is rotatably connected to the outer surface of one end of the second screw (23).

6. The positioning fixture for a CNC machine tool according to claim 5, characterized in that: The positioning rod (20) is connected to one side of the top surface of the support base (11). The bottom surface of the mounting bracket (12) is provided with positioning grooves on both sides. The top of the positioning rod (20) is inserted into the positioning groove of the mounting bracket (12). A groove is provided on one side of the positioning rod (20). One end of the compression spring (21) is connected to one side of the inner wall of the groove of the positioning rod (20).

7. The positioning fixture for a CNC machine tool according to claim 5, characterized in that: The mounting bracket (12) has a positioning groove with limiting grooves on both sides. The rectangular frame (22) is inserted into the limiting grooves on both sides of the mounting bracket (12). One end of the second screw (23) is connected to one side surface of the mounting bracket (12). The second screw (23) and the nut (24) are connected by a thread for rotation.

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