Clamp for numerical control machine tool

Abstract

The clamp for the numerical control machine tool comprises a bottom plate, fixing blocks are installed at the four corners of the lower end of the bottom plate, a machine tool buffering mechanism is installed at the lower ends of the fixing blocks, a groove is formed in the upper end of the bottom plate, and a clamp buffering mechanism is installed in the groove. The clamp buffering mechanism comprises a partition plate and a buffering pad, the partition plate is installed on one side of the bottom plate, a motor is installed at the upper end of the partition plate, a rotating shaft is installed at the output end of the motor, one end of the rotating shaft penetrates through the bottom plate and is provided with a two-way screw in the groove, the buffering pad is installed in the groove, and a buffering plate is installed on the buffering pad. According to the clamp for the numerical control machine tool, the clamp buffering mechanism is installed on the clamp for the numerical control machine tool and used for buffering vibration of the clamping block caused by vibration of the machine tool, the clamping block which vibrates due to stress can buffer vibration through the clamp buffering mechanism, parts can be clamped and fixed and cannot loosen, and the vibration cannot affect the machining quality of the parts.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, in particular to a clamp for numerically controlled machine tools. Background Art

[0002] CNC machine tools, also known as computer numerical control (CNC) machine tools, are highly automated machine tools that use electronic computers to achieve precise control of the movement of the machine tools. This type of machine tool is equipped with a program control system that can receive instructions written in the form of control codes or other symbols, and can logically process these instructions to automatically complete the shape and size processing of the workpiece according to the predetermined drawing requirements. CNC machine tools are popular because they can handle complex, precise and small-batch parts processing. They are typical representatives of mechatronics and represent the development direction of modern machine tool control technology.

[0003] After searching, the Chinese patent document application number 201921580763.2 discloses a clamp for CNC machine tools, in which a rectangular plate-shaped pressure plate is provided in the clamping groove of the clamp for CNC machine tools, and a number of fastening bolts are horizontally provided on the side of the clamping groove, a tool setting sensor is inlaid in the top corner of the clamping groove, and a clamping plate groove is horizontally provided at the bottom of the clamping groove. The clamping plate groove is a rectangular through hole, and a pressure sensor is provided at the bottom of the clamping plate groove. When in use, the clamp can be fixed to the CNC machine tool by pressing the clamping plate groove of the clamping groove. The pressure sensor can accurately sense the clamping force of the pressure plate and help adjust to the appropriate clamping force. Then, by rotating the fastening bolts to force the pressure plate to fix the workpiece in the clamping groove, the workpiece can be machined. The tool setting sensor can help the CNC machine tool to accurately align the tool, accurately find the horizontal starting point and the vertical starting point of the CNC machine tool, and improve the processing accuracy of the CNC machine tool.

[0004] However, this device has certain defects. The existing CNC machine tool processing fixture has certain disadvantages when in use. Since the vibration of the machine tool can easily cause the fixture to vibrate, if the machine tool and the fixture are not shock-absorbing, the force vibration may cause the fixture to loosen the clamping and fixing of the parts, affecting the quality of the part processing. Therefore, we need to design a CNC machine tool fixture to solve the problem that the force vibration may cause the clamping and fixing of the parts to loosen. Utility Model Content

[0005] The utility model aims to provide a clamp for a numerically controlled machine tool, in which a clamp buffer mechanism is installed on the clamp for the numerically controlled machine tool to buffer the vibration of a clamping block caused by the vibration of the machine tool, so that the clamping block subjected to force vibration can buffer the vibration through the clamp buffer mechanism, so that the clamping and fixing of the parts will not loosen, and the vibration will not affect the quality of part processing.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for a CNC machine tool, comprising a bottom plate, four corners of the bottom end of the bottom plate are equipped with fixing blocks, a machine tool buffer mechanism is installed at the bottom end of the fixing block, a groove is opened at the upper end of the bottom plate, and a fixture buffer mechanism is installed in the groove;

[0007] The clamp buffer mechanism includes a partition and a buffer pad, the partition is installed on one side of the base plate, a motor is installed on the upper end of the partition, a rotating shaft is installed on the output end of the motor, one end of the rotating shaft passes through the base plate and a bidirectional screw is installed in the groove, the buffer pad is installed in the groove, a buffer plate is installed on the buffer pad, a connecting plate is installed on one side of the buffer plate, a movable groove is opened on one side of the connecting plate, one end of the bidirectional screw passes through the connecting plate and is rotatably installed in the movable groove, and two clamping blocks are threadedly installed on the bidirectional screw.

[0008] Preferably, the machine tool buffer mechanism includes four connecting frames, and the second damper springs are installed inside the four connecting frames, and a sliding column is installed at one end of the four second damper springs. The sliding column is slidably installed inside the connecting frames, and a support pad is installed at one end of the four sliding columns.

[0009] Preferably, a first limiting groove is provided inside the movable groove, and a first limiting sliding block is installed on one side of each of the two clamping blocks, and the first limiting sliding block is slidably installed in the first limiting groove.

[0010] Preferably, a buffer slide block is installed at the lower end of the two clamping blocks on the side away from the first limiting slide block, and a buffer groove is formed at the upper end of the buffer pad, and the buffer slide block is slidably installed in the buffer groove.

[0011] Preferably, anti-skid pads are installed on opposite sides of the two clamping blocks, and a plurality of anti-skid protrusions are provided on one side of the two anti-skid pads.

[0012] Preferably, a buffer ring is fixedly mounted on the rotating shaft, and a plurality of first damper springs are mounted at equal angles inside the buffer ring.

[0013] Preferably, two second limiting grooves are provided on the inner wall of the connecting frame, and two second limiting sliding blocks are installed on the outer wall of the sliding column, and the two second limiting sliding blocks are slidably installed in the two second limiting grooves respectively.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model mainly installs a clamp buffer mechanism on the clamp for the CNC machine tool to buffer the vibration of the clamping block caused by the vibration of the machine tool, so that the clamping block subjected to force vibration can buffer the vibration through the clamp buffer mechanism, so that the clamping and fixing of the parts will not be loosened, and the vibration will not affect the quality of part processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the fixture for CNC machine tools of the utility model;

[0017] Figure 2 This is a cross-sectional schematic diagram of the buffer mechanism of the clamp of the utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the buffer ring of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the buffer mechanism of a machine tool of the utility model.

[0020] In the figure: 1. bottom plate; 2. groove; 3. partition; 4. motor; 5. fixed block; 6. connecting frame; 7. sliding column; 8. support pad; 9. buffer plate; 10. connecting plate; 11. clamping block; 12. anti-slip pad; 13. buffer pad; 14. buffer groove; 15. buffer slider; 16. rotating shaft; 17. bidirectional screw; 18. buffer ring; 19. first limit slider; 20. moving groove; 21. first limit groove; 22. first damper spring; 23. second limit groove; 24. second damper spring; 25. second limit slider. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 The utility model provides a technical solution: a fixture for a CNC machine tool, comprising a base plate 1, four corners of the lower end of the base plate 1 are equipped with fixed blocks 5, the lower end of the fixed block 5 is equipped with a machine tool buffer mechanism, the upper end of the base plate 1 is provided with a groove 2, and the fixture buffer mechanism is installed in the groove 2;

[0023] The clamp buffer mechanism includes a partition 3 and a buffer pad 13. The partition 3 is installed on one side of the base plate 1. A motor 4 is installed on the upper end of the partition 3. A rotating shaft 16 is installed on the output end of the motor 4. One end of the rotating shaft 16 passes through the base plate 1 and a bidirectional screw 17 is installed in the groove 2. The buffer pad 13 is installed in the groove 2. A buffer plate 9 is installed on the buffer pad 13. A connecting plate 10 is installed on one side of the buffer plate 9. A movable groove 20 is opened on one side of the connecting plate 10. One end of the bidirectional screw 17 passes through the connecting plate 10 and is rotatably installed in the movable groove 20. Two clamping blocks 11 are threadedly installed on the bidirectional screw 17.

[0024] The machine tool buffer mechanism includes four connecting frames 6, and the second damper springs 24 are installed inside the four connecting frames 6. One end of the four second damper springs 24 is installed with a sliding column 7. The sliding column 7 is slidably installed inside the connecting frame 6, and one end of the four sliding columns 7 is installed with a support pad 8. The machine tool buffer mechanism is used to buffer the vibration generated by the operation of the CNC machine tool, and a better buffering effect can be achieved through the cooperation of the machine tool buffer mechanism and the fixture buffer mechanism.

[0025] A first limiting groove 21 is opened inside the movable groove 20, and a first limiting slider 19 is installed on one side of the two clamping blocks 11. The first limiting slider 19 is slidably installed in the first limiting groove 21. Through the cooperation of the first limiting groove 21 and the first limiting slider 19, the two clamping blocks 11 will not rotate with the bidirectional screw 17 when moving.

[0026] A buffer slide block 15 is installed at the lower end of the two clamping blocks 11 away from the first limit slide block 19. A buffer groove 14 is opened at the upper end of the buffer pad 13. The buffer slide block 15 is slidably installed in the buffer groove 14. The buffer slide block 15 is used to buffer vibration and support the clamping blocks 11.

[0027] An anti-skid pad 12 is installed on the opposite side of the two clamping blocks 11, and multiple anti-skid protrusions are set on one side of the two anti-skid pads 12. The anti-skid pad 12 and the anti-skid protrusions are used to prevent the parts clamped by the clamping blocks 11 from being fixed and loosened, and the anti-skid pad 12 can protect the parts and prevent them from being damaged by clamping.

[0028] A buffer ring 18 is fixedly mounted on the rotating shaft 16 , and a plurality of first damper springs 22 are mounted at equal angles inside the buffer ring 18 . The buffer ring 18 is provided to buffer vibration transmitted through the rotating shaft 16 .

[0029] Two second limit grooves 23 are provided on the inner wall of the connecting frame 6, and two second limit sliders 25 are installed on the outer wall of the sliding column 7. The two second limit sliders 25 are respectively slidably installed in the two second limit grooves 23. The second limit grooves 23 and the second limit sliders 25 cooperate to ensure that the sliding column 7 will not be skewed when sliding in the connecting frame 6.

[0030] When in use, the part is placed on the buffer pad 13, and the motor 4 is turned on. The rotation of the motor 4 will drive the rotating shaft 16 to rotate, causing the bidirectional screw 17 to rotate, and the two clamping blocks 11 installed on the bidirectional rotating shaft 16 will move relatively to clamp the part. When the CNC machine tool is working, a better buffering effect can be achieved through the cooperation of the machine tool buffer mechanism and the fixture buffer mechanism, so that the clamping block 11 that is subjected to force vibration can buffer the vibration through the fixture buffer mechanism, so that the clamping and fixing of the part will not loosen, and the vibration will not affect the quality of part processing.

[0031] 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 machine tool, comprising a base plate (1), characterized in that: A fixing block (5) is installed at each of the four corners of the lower end of the base plate (1), a machine tool buffer mechanism is installed at the lower end of the fixing block (5), a groove (2) is opened at the upper end of the base plate (1), and a fixture buffer mechanism is installed in the groove (2); The clamp buffer mechanism comprises a partition (3) and a buffer pad (13), wherein the partition (3) is mounted on one side of the base plate (1), a motor (4) is mounted on the upper end of the partition (3), a rotating shaft (16) is mounted on the output end of the motor (4), one end of the rotating shaft (16) passes through the base plate (1) and a bidirectional screw (17) is mounted in a groove (2), the buffer pad (13) is mounted in the groove (2), a buffer plate (9) is mounted on the buffer pad (13), a connecting plate (10) is mounted on one side of the buffer plate (9), a movable groove (20) is provided on one side of the connecting plate (10), one end of the bidirectional screw (17) passes through the connecting plate (10) and is rotatably mounted in the movable groove (20), and two clamping blocks (11) are threadedly mounted on the bidirectional screw (17).

2. A fixture for a CNC machine tool according to claim 1, characterized in that: The machine tool buffer mechanism comprises four connecting frames (6), the interior of each of the four connecting frames (6) is equipped with a second damper spring (24), one end of each of the four second damper springs (24) is equipped with a sliding column (7), the sliding column (7) is slidably installed inside the connecting frame (6), and one end of each of the four sliding columns (7) is equipped with a support pad (8).

3. A fixture for a CNC machine tool according to claim 2, characterized in that: A first limiting groove (21) is provided inside the movable groove (20), and a first limiting slide block (19) is installed on one side of each of the two clamping blocks (11), and the first limiting slide block (19) is slidably installed in the first limiting groove (21).

4. A fixture for a CNC machine tool according to claim 3, characterized in that: A buffer slide block (15) is installed at the lower end of the two clamping blocks (11) away from the first limiting slide block (19), a buffer groove (14) is opened at the upper end of the buffer pad (13), and the buffer slide block (15) is slidably installed in the buffer groove (14).

5. A fixture for a CNC machine tool according to claim 4, characterized in that: An anti-skid pad (12) is installed on one side opposite to the two clamping blocks (11), and a plurality of anti-skid protrusions are arranged on one side of the two anti-skid pads (12).

6. A fixture for a CNC machine tool according to claim 5, characterized in that: A buffer ring (18) is fixedly mounted on the rotating shaft (16), and a plurality of first damper springs (22) are mounted at equal angles inside the buffer ring (18).

7. A fixture for a CNC machine tool according to claim 6, characterized in that: Two second limiting grooves (23) are provided on the inner wall of the connection frame (6), and two second limiting slide blocks (25) are installed on the outer wall of the sliding column (7). The two second limiting slide blocks (25) are respectively slidably installed in the two second limiting grooves (23).

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