Clamp tool of numerical control machine tool

Abstract

The utility model relates to the technical field of clamps, in particular to a clamp tool of a numerical control machine tool, which comprises a base plate, a U-shaped mounting frame fixedly mounted on the base plate and a positive and negative tooth screw rod rotatably connected on the U-shaped mounting frame, a sliding seat is slidably connected in the U-shaped mounting frame, and clamping structures in different shapes are formed by two clamping plates. When the two clamping plates are parallel to each other, a workpiece is clamped and fixed through mutual approaching of the sliding seats, when the two clamping plates form a V-shaped structure, the V-shaped structure adapts to a round workpiece or a special-shaped workpiece, the hand wheel is rotated to drive the screw rod to move in the outer sleeve in a threaded mode, the outer sleeve supports the telescopic strip, and the telescopic strip extends out of the outer sleeve. The supporting plate is rotated to be supported on the back faces of the clamping plates, a V-shaped structure formed by the two clamping plates supports a round or special-shaped workpiece, the clamping effect of the workpiece is ensured, the workpieces in different shapes are clamped by changing the angle between the clamping plates, and the application range of equipment is greatly widened.

Description

Technical Field

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

[0002] The fixtures and tooling of CNC machine tools are important tools to ensure processing accuracy and efficiency. The fixtures and tooling can firmly clamp the workpiece to ensure that it remains stable during the processing and prevent displacement and deformation. They usually have the characteristics of high precision and high rigidity and can adapt to the processing needs of workpieces of different shapes and sizes.

[0003] When using fixtures, you need to pay attention to the following aspects: First, ensure that the fixtures are installed firmly to avoid loosening or shaking during processing; second, keep the fixtures clean to prevent dust, iron filings and other debris from affecting the accuracy of the fixtures; third, regularly inspect and maintain the fixtures to detect and deal with problems in a timely manner; fourth, select appropriate fixtures based on the characteristics of the workpiece and processing requirements to ensure that they match the workpiece; fifth, use fixtures in strict accordance with operating procedures to avoid damage to the fixtures or unqualified workpiece processing due to improper operation.

[0004] Traditional fixtures can only clamp workpieces of corresponding shapes. For example, a vise can only clamp rectangular workpieces. The clamping stability is greatly reduced when facing a cylindrical workpiece. In order to improve the versatility of the fixture and adapt to workpieces of more different shapes and materials, a new type of CNC machine tool fixture is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a fixture for a numerically controlled machine tool to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture tool for a CNC machine tool, comprising a chassis, a U-shaped mounting frame fixedly mounted on the chassis, and positive and negative screw rods rotatably connected to the U-shaped mounting frame, a sliding seat being slidably connected in the U-shaped mounting frame, and the sliding seat is threadedly connected to the positive and negative screw rods, a first arc limit plate and a second arc limit plate are arranged on the top of the sliding seat, the sliding seat is rotatably connected to the clamping plate through the first arc limit plate and the second arc limit plate, and mounting frames are arranged on the opposite sides of the two sliding seats, an outer sleeve is fixedly mounted on the top of the mounting frame, a screw is threadedly connected in the inner thread of the outer sleeve, a telescopic strip is also movably inserted in the outer sleeve, and the telescopic strip is rotatably connected to the screw, a rotating part is rotatably connected to the end of the telescopic strip, and a support plate is fixedly connected to the surface of the rotating part.

[0007] Preferably, a sliding wheel is fixedly mounted on the bottom of the sliding seat, and the sliding wheel is rollingly connected to the top of the chassis.

[0008] Preferably, a gap of 2 to 5 cm is left between the bottom of the sliding seat and the top of the chassis.

[0009] Preferably, the centers of the circles corresponding to the first arc-shaped limiting plate and the second arc-shaped limiting plate are the same.

[0010] Preferably, the horizontal position of the corresponding position of the outer sleeve is higher than the horizontal positions of the corresponding positions of the first arc-shaped limiting plate and the second arc-shaped limiting plate.

[0011] Preferably, a hand wheel is provided on the end of the screw.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: by rotating the clamping plate, the clamping plate is moved under the guidance of the first arc-shaped limit plate and the second arc-shaped limit plate, so that the two clamping plates form clamping structures of different shapes; when the two clamping plates are parallel to each other, the distance between the two sliding seats is changed by rotating the positive and negative screw rods, and the workpiece is clamped and fixed by the mutual approach of the sliding seats; when the two clamping plates form a V-shaped structure, it is suitable for round workpieces or workpieces of different shapes; the hand wheel is rotated to drive the screw to move in the inner thread of the outer sleeve; the outer sleeve supports the telescopic strip, and the telescopic strip extends from the outer sleeve; the support plate is rotated to allow the support plate to support the back of the clamping plate; the V-shaped structure formed by the two clamping plates supports the round or heterogeneous workpiece, ensuring the clamping effect of the workpiece; by changing the angle between the clamping plates, workpieces of different shapes can be clamped, thereby greatly improving the use range of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the corresponding position of the pulley of the utility model.

[0015] Figure 3 It is a structural schematic diagram of the first arc-shaped limiting plate and the second arc-shaped limiting plate at corresponding positions of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the corresponding position of the telescopic strip of the utility model.

[0017] In the figure: 1. chassis; 2. U-shaped mounting frame; 3. positive and negative threaded screws; 4. sliding seat; 5. clamping plate; 6. first arc-shaped limit plate; 7. second arc-shaped limit plate; 8. mounting frame; 9. outer sleeve; 10. screw; 11. telescopic strip; 12. rotating part; 13. support plate; 14. hand wheel. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0019] See also Figures 1 to 4 The utility model provides a technical solution: a fixture for a CNC machine tool, comprising a chassis 1, a U-shaped mounting frame 2 fixedly mounted on the chassis 1, and a positive and negative threaded rod 3 rotatably connected to the U-shaped mounting frame 2, a sliding seat 4 is slidably connected inside the U-shaped mounting frame 2, and the sliding seat 4 is threadedly connected to the positive and negative threaded rod 3, through the threads on the positive and negative threaded rod 3, during the rotation of the positive and negative threaded rod 3, the two sliding seats 4 move towards or away from each other, a sliding wheel is fixedly mounted on the bottom of the sliding seat 4, and the contact between the sliding wheel and the top of the chassis 1 reduces the resistance during the movement of the sliding seat 4, improves the convenience of movement of the sliding seat 4, the sliding wheel is rollingly connected to the top of the chassis 1, and a gap of 2 to 5 cm is left between the bottom of the sliding seat 4 and the top of the chassis 1, ensuring that the bottom of the sliding seat 4 does not contact the top of the chassis 1, and at the same time only the sliding wheel affects the movement of the sliding seat 4;

[0020] A first arc-shaped limit plate 6 and a second arc-shaped limit plate 7 are arranged on the top of the sliding seat 4, and the sliding seat 4 is rotatably connected with a clamping plate 5 through the first arc-shaped limit plate 6 and the second arc-shaped limit plate 7, and the corresponding centers of the circles of the first arc-shaped limit plate 6 and the second arc-shaped limit plate 7 are the same, and the clamping plate 5 moves under the limitation of the first arc-shaped limit plate 6 and the second arc-shaped limit plate 7, and the two clamping plates 5 move toward each other with the contact position as the center and the away sides. A mounting frame 8 is arranged on the opposite sides of the two sliding seats 4, and an outer sleeve 9 is fixedly installed on the top of the mounting frame 8, and the horizontal position of the corresponding position of the outer sleeve 9 is higher than that of the corresponding position of the first arc-shaped limit plate 6 and the second arc-shaped limit plate 7. The telescopic strip 11 is in a horizontal position to prevent the movement of the telescopic strip 11 from being affected. The inner thread of the outer sleeve 9 is connected with a screw rod 10. The screw rod 10 moves in the inner thread of the outer sleeve 9 to push the telescopic strip 11 to move and change the position of the telescopic strip 11. The outer sleeve 9 is also movably connected with the telescopic strip 11, and the telescopic strip 11 is rotatably connected to the screw rod 10. A rotating member 12 is rotatably connected to the end of the telescopic strip 11. A support plate 13 is fixedly connected to the surface of the rotating member 12. The rotating member 12 is rotatably connected to the telescopic strip 11. The rotating member 12 changes the horizontal inclination angle of the support plate 13. A hand wheel 14 is provided on the end of the screw rod 10 to assist in rotating the screw 10 and improve the convenience of rotating the screw 10.

[0021] Working principle:

[0022] When clamping a rectangular workpiece, the two clamping plates 5 are parallel to each other. The distance between the two sliding seats 4 is changed by rotating the positive and negative screw rods 3. The workpiece is clamped and fixed by the mutual approach of the sliding seats 4. When clamping a circular workpiece or a workpiece with a different shape, the clamping plate 5 can be rotated to allow the clamping plate 5 to move under the guidance of the first arc limit plate 6 and the second arc limit plate 7. The two clamping plates 5 form a V-shaped structure that adapts to the workpiece. At the same time, the hand wheel 14 is rotated to drive the screw 10 to move in the inner thread of the outer sleeve 9. The outer sleeve 9 supports the telescopic strip 11, which extends out from the outer sleeve 9, and the support plate 13 is rotated to allow the support plate 13 to support the back of the clamping plate 5. The V-shaped structure formed by the two clamping plates 5 supports the circular or heterogeneous workpiece to ensure the clamping effect of the workpiece.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A fixture for a numerically controlled machine tool, comprising a chassis (1), a U-shaped mounting frame (2) fixedly mounted on the chassis (1), and a positive and negative threaded rod (3) rotatably connected to the U-shaped mounting frame (2), characterized in that: A sliding seat (4) is slidably connected inside the U-shaped mounting frame (2), and the sliding seat (4) is threadedly connected to the positive and negative threaded rods (3). A first arc-shaped limit plate (6) and a second arc-shaped limit plate (7) are arranged on the top of the sliding seat (4). The sliding seat (4) is rotatably connected to a clamping plate (5) through the first arc-shaped limit plate (6) and the second arc-shaped limit plate (7). Mounting frames (8) are arranged on opposite sides of the two sliding seats (4). An outer sleeve (9) is fixedly installed on the top of the mounting frame (8). The inner thread of the outer sleeve (9) is connected to a screw rod (10). A telescopic strip (11) is also movably inserted in the outer sleeve (9), and the telescopic strip (11) is rotatably connected to the screw rod (10). A rotating member (12) is rotatably connected to the end of the telescopic strip (11), and a support plate (13) is fixedly connected to the surface of the rotating member (12).

2. The fixture for a CNC machine tool according to claim 1, characterized in that: A sliding wheel is fixedly mounted on the bottom of the sliding seat (4), and the sliding wheel is rollingly connected to the top of the chassis (1).

3. The fixture for a CNC machine tool according to claim 2, characterized in that: A gap of 2 to 5 cm is left between the bottom of the sliding seat (4) and the top of the chassis (1).

4. The fixture for a CNC machine tool according to claim 1, characterized in that: The first arc-shaped limiting plate (6) and the second arc-shaped limiting plate (7) have the same corresponding circle centre.

5. The fixture for a CNC machine tool according to claim 1, characterized in that: The horizontal position of the corresponding position of the outer sleeve (9) is higher than the horizontal positions of the corresponding positions of the first arc-shaped limiting plate (6) and the second arc-shaped limiting plate (7).

6. The fixture for a CNC machine tool according to claim 1, characterized in that: A hand wheel (14) is arranged on the end of the screw rod (10).

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