Clamp for numerical control machining center

Abstract

The utility model discloses a clamp for a numerical control machining center, which comprises a mounting plate mounted on a numerical control machine tool, symmetrically arranged side plates are fixedly mounted on the mounting plate, and a placing plate for placing a workpiece is fixedly mounted on the side plates; a driving assembly is mounted on the mounting plate, a clamping assembly is arranged on the driving assembly, the clamping assembly comprises a clamping plate, the clamping plate is mounted on a placement plate in a sliding manner, a reset assembly is arranged on the placement plate, and the position of the clamping plate is reset to the original position through the reset assembly. In the using process of the clamp, clamping movement in the clamping assembly is achieved through the driving assembly, workpieces of different sizes can be clamped conveniently through the two movable clamping plates, more labor can be saved when the clamping plates are restored to the original positions through the reset assembly, and the flexibility and convenience of the clamp are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control machining, in particular to a clamp used for a numerical control machining center. Background Art

[0002] The CNC machining center has developed from the CNC milling machine. The biggest difference between it and the CNC milling machine is that the machining center has the ability to automatically exchange machining tools. By installing tools for different purposes on the tool magazine, the machining tools on the spindle can be changed through the automatic tool changing device in one clamping to achieve multiple machining functions. The CNC machining center is a high-efficiency automated machine tool composed of mechanical equipment and CNC systems, which is suitable for machining complex parts.

[0003] In the prior art, a Chinese patent with publication number "CN218110011U" discloses a processing fixture for a CNC machining center, in which a fixed frame and a connecting frame on a clamp are connected by a locking screw, and finally the installation of the clamp is completed. When the clamp needs to be replaced or overhauled, the clamp can be removed from the connecting frame by simply loosening the locking screw. The operation is convenient, the disassembly and assembly time of the clamp is reduced, and the machining efficiency of the workpiece is improved. The problem that the clamps used in existing CNC machining centers are usually connected as an integral part by a bracket and a clamp, and then movably connected to a mounting plate for use, so that when the clamp needs to be replaced or overhauled, the bracket and the clamp need to be removed from the mounting plate as a whole for replacement as a whole, which makes the disassembly and assembly of the clamp very inconvenient.

[0004] However, the existing technology still has major deficiencies, such as:

[0005] Before processing aluminum profiles, the CNC machining center needs to clamp the workpiece with a clamp. Most of the current clamps are manually adjusted to fix the workpiece on the clamp. When the workpiece is clamped and fixed by the clamping block, in order to avoid the workpiece falling off during processing due to poor fixing effect, the staff also needs to use tools to further stabilize the workpiece on the clamp. However, this method has a slow clamping efficiency for the workpiece, and can only make a single clamping block move in one direction, and cannot make the two clamping blocks move inward at the same time, so that the flexibility of the clamp cannot be highlighted in the whole process, which reduces the practicality of the clamp to a certain extent. When the workpiece cannot be clamped and fixed quickly, it will affect the processing efficiency of the workpiece. Utility Model Content

[0006] The purpose of the utility model is to provide a clamp for a CNC machining center to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A fixture for a CNC machining center, comprising a mounting plate mounted on a CNC machining machine, the mounting plate being fixedly mounted with symmetrically arranged side plates, the side plates being fixedly mounted with a placement plate for placing a workpiece;

[0009] A driving assembly is installed on the mounting plate, a clamping assembly is arranged on the driving assembly, and the clamping assembly includes a clamping plate, and the clamping plate is slidably mounted on the placement plate;

[0010] The placement plate is provided with a reset component, through which the position of the clamping plate is restored to its original position.

[0011] Preferably, the clamping assembly further comprises a motor mounted on the mounting plate, a threaded rod is fixedly mounted on the output end of the motor, a lifting plate is movably mounted on the threaded rod, and a first fixing frame is fixedly mounted on the lifting plate;

[0012] A sliding block is fixedly mounted on the clamping plate, a second fixing frame is fixedly mounted on the sliding block, and a connecting rod is movably mounted between the first fixing frame and the second fixing frame.

[0013] Preferably, a positioning slide block is fixedly mounted on the lifting plate, and a positioning groove for use with the positioning slide block is provided on the inner side surface of the side plate.

[0014] Preferably, the reset assembly includes a sliding groove arranged on the placement plate, a sliding rod is fixedly installed in the sliding groove, a spring is arranged on the outside of the sliding rod, the sliding block is slidably installed inside the sliding groove, the sliding block and the sliding rod are slidably installed, one end of the spring is installed inside the sliding groove, and the other end of the spring is fixedly installed on the sliding block.

[0015] Preferably, a limiting sliding block is fixedly mounted on the sliding block, and an inner side surface of the sliding groove is provided with a limiting sliding groove used in conjunction with the limiting sliding block.

[0016] Preferably, two symmetrically arranged stabilizing plates are fixedly mounted on the placement plate, and the stabilizing plates are located outside the clamping plate.

[0017] Preferably, a protective pad is fixedly mounted on the inner side surface of the clamping plate, and the material used for the protective pad is rubber.

[0018] Preferably, the two side plates are provided with closing plates, fastening bolts are threadedly mounted on the closing plates, and threaded holes used in conjunction with the fastening bolts are opened on the side plates.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. In the utility model, the motor in the driving assembly drives the threaded rod to rotate, and the threaded rod drives the lifting plate to descend when rotating. When the lifting plate descends, the connecting rod drives the sliding block to slide in the sliding groove. When the sliding block slides, the clamping plate moves inward. The two clamping plates move inward synchronously, so that the workpiece is fixed on the placement plate, which not only realizes the clamping of workpieces of different models and sizes, but also improves the flexibility and convenience of the clamp. In addition, manual clamping is not required during the clamping process, which also improves the practicality of the clamp.

[0021] 2. In the utility model, when the clamping plate returns to its original position, the sliding block on the clamping plate will slide within the sliding groove within a limited position, and at the same time, the sliding rod and the limiting slider will be limited to ensure the stability of the clamping plate when it returns to its original position. The sliding block will also be affected by the elastic properties of the spring so that the clamping plate can be stably restored to its original position, reducing the difficulty of restoring the clamping plate to its original position and further improving the practicality of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 3 It is a cross-sectional view of the side panel of the utility model;

[0025] Figure 4 It is a cross-sectional view of the placement plate in the utility model.

[0026] In the figure: 1. mounting plate; 2. side plate; 3. placement plate; 4. clamping plate; 5. motor; 6. threaded rod; 7. lifting plate; 8. first fixed frame; 9. sliding block; 10. second fixed frame; 11. connecting rod; 12. positioning slider; 13. positioning slide groove; 14. sliding groove; 15. sliding rod; 16. spring; 17. limiting slider; 18. stabilizing plate; 19. protective pad; 20. closing plate; 21. fastening bolts. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4 , the utility model provides a technical solution:

[0029] Embodiment 1:

[0030] A clamp for a CNC machining center, comprising a mounting plate 1 mounted on a CNC machining machine, a positioning hole is provided on the mounting plate 1, and the clamp is conveniently mounted on the CNC machining machine through the positioning hole, a symmetrically arranged side plate 2 is fixedly mounted on the mounting plate 1, a closing plate 20 is provided on the two side plates 2, a fastening bolt 21 is threadedly installed on the closing plate 20, and a threaded hole used in conjunction with the fastening bolt 21 is provided on the side plate 2, and the driving component can be easily repaired by removing the closing plate 20, and it is also convenient to clean up some waste chips that fall from the sliding groove 14 onto the lifting plate 7, a placing plate 3 for placing a workpiece is fixedly mounted on the side plate 2, and two symmetrically arranged stabilizing plates 18 are fixedly mounted on the placing plate 3, and the stabilizing plates 18 are located outside the clamping plate 4;

[0031] A driving assembly is installed on the mounting plate 1, and a clamping assembly is arranged on the driving assembly. The clamping assembly includes a clamping plate 4, which is slidably mounted on the placement plate 3. A protective pad 19 is fixedly mounted on the inner side of the clamping plate 4. The material used for the protective pad 19 is rubber. The protective pad 19 made of rubber reduces the friction between the clamping plate 4 and the workpiece, so as to prevent the clamping plate 4 from causing damage to the surface of the workpiece;

[0032] The clamping assembly further includes a motor 5 mounted on the mounting plate 1, a threaded rod 6 is fixedly mounted on the output end of the motor 5, a lifting plate 7 is movably mounted on the threaded rod 6, and a first fixing frame 8 is fixedly mounted on the lifting plate 7;

[0033] A sliding block 9 is fixedly installed on the clamping plate 4, a second fixing frame 10 is fixedly installed on the sliding block 9, a connecting rod 11 is movably installed between the first fixing frame 8 and the second fixing frame 10, a positioning slide block 12 is fixedly installed on the lifting plate 7, and a positioning slide groove 13 used in conjunction with the positioning slide block 12 is opened on the inner side surface of the side plate 2.

[0034] In this embodiment, the threaded rod 6 is driven to rotate by the motor 5 in the driving assembly. When the threaded rod 6 rotates, it drives the lifting plate 7 to descend. When the lifting plate 7 descends, it drives the sliding block 9 to slide in the sliding groove 14 through the connecting rod 11. When the sliding block 9 slides, it drives the clamping plate 4 to move inward. The two clamping plates 4 move inward synchronously, so that the workpiece is fixed on the placement plate 3, which not only realizes the clamping of zero workpieces of different models and sizes, but also improves the flexibility and convenience of the clamp. In addition, there is no need for manual clamping during the clamping process, which also improves the practicality of the clamp.

[0035] Embodiment 2:

[0036] On the basis of Example 1, in order to make the clamping plate 4 more labor-saving when restoring its original position, a reset component is used to achieve this effect. A reset component is provided on the placement plate 3, and the position of the clamping plate 4 is restored to its original position through the reset component. The reset component includes a sliding groove 14 provided on the placement plate 3, and a sliding rod 15 is fixedly installed in the sliding groove 14. Through the positioning of the sliding rod 15, the sliding block 9 will not experience positional deviation when it slides in the sliding groove 14. A spring 16 is provided on the outer side of the sliding rod 15, and the sliding block 9 is slidably installed in the sliding groove 14. The sliding block 9 and the sliding rod 15 are slidably installed. One end of the spring 16 is installed in the sliding groove 14, and the other end of the spring 16 is fixedly installed on the sliding block 9. A limiting slider 17 is fixedly installed on the sliding block 9, and a limiting slider 17 is provided on the inner side surface of the sliding groove 14 for use with the limiting slider 17.

[0037] In this embodiment, when the clamping plate 4 returns to its original position, the sliding block 9 on the clamping plate 4 will slide in a limited position in the sliding groove 14, and at the same time, the sliding rod 15 and the limiting slider 17 will be limited to ensure the stability of the clamping plate 4 when it returns to its original position, and the sliding block 9 will also be affected by the elastic properties of the spring 16 so that the clamping plate 4 can be stably restored to its original position, thereby reducing the difficulty of restoring the clamping plate 4 to its original position, and further improving the practicality of the clamp.

[0038] Working principle:

[0039] When in use, the entire clamp is installed on the CNC machining machine through the positioning holes on the mounting plate 1, and then the workpiece to be clamped is placed on the placement plate 3. At this time, the threaded rod 6 is driven to rotate by the motor 5. When the threaded rod 6 rotates, it drives the lifting plate 7 to descend. When the lifting plate 7 descends, it drives the connecting rod 11 to rotate through the first fixed frame 8. When the connecting rod 11 rotates, the clamping plate 4 will move horizontally synchronously through the second fixed frame 10 on the sliding block 9, and the two clamping plates 4 will move synchronously inward, so that the workpiece is clamped on the placement plate 3;

[0040] After the workpiece is processed, the motor 5 drives the threaded rod 6 to rotate so as to drive the lifting plate 7 to restore to its original position. When the lifting plate 7 moves, it drives the sliding block 9 on the second fixed frame 10 to restore to its original position through the connecting rod 11. At the same time, the sliding block 9 drives the clamping plate 4 to move synchronously. When the sliding block 9 moves in the sliding groove 14, the sliding block 9 can quickly restore the clamping plate 4 to its previous position through the limit of the sliding rod 15 and the rebound ability of the spring 16, so as to facilitate clamping of a new workpiece.

[0041] When the lifting plate 7 is being lifted or lowered, the lifting plate 7 will slide within the positioning slot 13 through the positioning slider 12 to ensure that the lifting plate 7 will not be offset during lifting or lowering, and the height of the lifting position of the lifting plate 7 is also limited.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for a CNC machining center, comprising a mounting plate (1) mounted on a CNC machining center, characterized in that: The mounting plate (1) is fixedly mounted with symmetrically arranged side plates (2), and the side plates (2) are fixedly mounted with a placement plate (3) for placing a workpiece; A driving assembly is mounted on the mounting plate (1), a clamping assembly is arranged on the driving assembly, the clamping assembly comprises a clamping plate (4), and the clamping plate (4) is slidably mounted on the placement plate (3); The placement plate (3) is provided with a reset component, through which the position of the clamping plate (4) is restored to its original position.

2. The fixture for a CNC machining center according to claim 1, characterized in that: The clamping assembly further comprises a motor (5) mounted on the mounting plate (1); a threaded rod (6) is fixedly mounted on the output end of the motor (5); a lifting plate (7) is movably mounted on the threaded rod (6); and a first fixing frame (8) is fixedly mounted on the lifting plate (7); A sliding block (9) is fixedly mounted on the clamping plate (4), a second fixing frame (10) is fixedly mounted on the sliding block (9), and a connecting rod (11) is movably mounted between the first fixing frame (8) and the second fixing frame (10).

3. A fixture for a CNC machining center according to claim 2, characterized in that: A positioning slide block (12) is fixedly mounted on the lifting plate (7), and a positioning slide groove (13) for use with the positioning slide block (12) is provided on the inner side surface of the side plate (2).

4. The fixture for a CNC machining center according to claim 2, characterized in that: The reset assembly comprises a sliding groove (14) arranged on the placement plate (3), a sliding rod (15) is fixedly installed in the sliding groove (14), a spring (16) is arranged on the outer side of the sliding rod (15), the sliding block (9) is slidably installed in the sliding groove (14), the sliding block (9) and the sliding rod (15) are slidably installed, one end of the spring (16) is installed in the sliding groove (14), and the other end of the spring (16) is fixedly installed on the sliding block (9).

5. The fixture for a CNC machining center according to claim 4, characterized in that: A limit sliding block (17) is fixedly mounted on the sliding block (9), and a limit sliding groove for use with the limit sliding block (17) is provided on the inner side surface of the sliding groove (14).

6. The fixture for a CNC machining center according to claim 1, characterized in that: Two symmetrically arranged stabilizing plates (18) are fixedly mounted on the placement plate (3), and the stabilizing plates (18) are located outside the clamping plate (4).

7. The fixture for a CNC machining center according to claim 1, characterized in that: A protective pad (19) is fixedly mounted on the inner side surface of the clamping plate (4), and the material used for the protective pad (19) is rubber.

8. The fixture for a CNC machining center according to claim 1, characterized in that: The two side plates (2) are provided with closing plates (20), fastening bolts (21) are threadedly mounted on the closing plates (20), and threaded holes for use with the fastening bolts (21) are provided on the side plates (2).

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