Clamping device of thread rolling machine

Abstract

The utility model relates to the technical field of standard part processing, in particular to a clamping device of a thread rolling machine, which comprises a workbench, a height adjusting device and a clamping device, the height adjusting device comprises a first bidirectional screw, a sliding block, a connecting rod, a fixing rod, a lifting seat and a first motor, the top end of the workbench is provided with a cavity with an upper opening, and the clamping device is arranged in the cavity. The first bidirectional screw is transversely and rotatably mounted in the cavity, the connecting rod is hinged to the top end of the first bidirectional screw, the lifting seat is hinged to the top end of the connecting rod, the clamping device is mounted on the top wall of the lifting seat, and the sliding block drives the connecting rod and the lifting seat to move upwards in the moving process; the lifting seat drives the workpiece clamped and fixed through the clamping device to move up and down, it is guaranteed that the workpiece can be aligned with a machining port of the thread rolling machine, automatic height adjustment can be achieved, manual operation is replaced, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of standard parts processing, in particular to a clamping device of a thread rolling machine. Background Art

[0002] As we all know, the thread rolling machine is a multifunctional cold extrusion forming machine tool. The thread rolling machine can perform thread, straight grain, and twill rolling on the workpiece in the cold state within its rolling force range; rolling of spur gears, helical gears and helical spline gears; straightening, diameter reduction, rolling and various forming rolling; the thread rolling cold rolling process is an advanced non-cutting process that can effectively improve the intrinsic and surface quality of the workpiece. The radial compressive stress generated during processing can significantly improve the fatigue strength and torsional strength of the workpiece. It is an ideal process with high efficiency, energy saving and low consumption.

[0003] After the clamping device of the existing thread rolling machine clamps and fixes the workpiece, the height of the clamped workpiece needs to be manually adjusted to ensure that the workpiece can be aligned with the processing port of the thread rolling machine. Manual height adjustment requires the operator to spend extra time and energy, which will cause time delays in the production process, and frequent operations and adjustments will not only increase the labor intensity of the operator, but may also cause operator fatigue, increase the possibility of errors, and reduce production efficiency and product quality. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a clamping device for a thread rolling machine.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a clamping device of a thread rolling machine, comprising a workbench, a height adjustment device and a clamping device, the height adjustment device comprising a first bidirectional screw, a slider, a connecting rod, a fixing rod, a lifting seat and a first motor, a cavity with an upper opening is opened at the top of the workbench, the first bidirectional screw is installed in the cavity for transverse rotation, the top end of the first bidirectional screw is hingedly connected to the connecting rod, the top end of the connecting rod is hingedly installed to the lifting seat, the clamping device is installed on the top wall of the lifting seat, two groups of the fixing rods are arranged in the cavity, the fixing rods are symmetrically designed about the central axis of the first bidirectional screw, the left and right ends of the fixing rods are respectively slidably connected to the slider at the corresponding position, the first motor is installed on one side wall of the workbench, and the output end of the first motor passes through the side wall of the workbench and is connected to the first bidirectional screw.

[0008] In order to facilitate clamping and fixing the workpiece, the utility model is improved in that the clamping device includes a second bidirectional screw, a moving block, a support column, a clamping block and a second motor; a rectangular groove is provided at the top of the lifting seat, and the second bidirectional screw is rotatably installed in the rectangular groove; the moving blocks are installed at both left and right ends of the second bidirectional screw, the support column is installed at the top of the moving block, the clamping block is fixedly connected to the top of the support column, and one end of the second bidirectional screw passes through the side wall of the lifting seat and is installed with the second motor.

[0009] In order to guide the movement of the two groups of clamping blocks, the utility model is improved in that two groups of groove bodies are opened symmetrically front and back about the rectangular groove on the top wall of the lifting seat, and a first guide rod is fixedly installed in the groove body. First guide blocks are installed on the left and right ends of the two groups of the first guide rods, and the top wall of the first guide block is fixedly connected to the bottom wall of the clamping block at the corresponding position.

[0010] In order to facilitate clamping of cylindrical workpieces with different diameters, the utility model is improved in that a V-shaped groove is provided on one side corresponding to the two groups of clamping blocks.

[0011] In order to guide the lifting and lowering of the lifting seat, the utility model has the following improvements: four groups of fixed frames are symmetrically designed on the left and right sides of the top of the workbench, a second guide rod is fixedly installed in the fixed frame, a second guide block is slidably installed on the second guide rod, and multiple groups of the second guide blocks are respectively fixedly connected to the left and right side walls of the lifting seat.

[0012] In order to ensure the stability and accuracy of the operation of the first motor and the second motor, the utility model is improved in that the first motor and the second motor are both servo motors.

[0013] In order to increase the holding force of the V-shaped groove, the utility model is improved in that the inner side walls of the two groups of V-shaped grooves are both installed with a plurality of positioning points.

[0014] In order to ensure the stable support of the workbench, the utility model is improved in that the four corners of the bottom wall of the workbench are provided with supporting legs.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a clamping device for a thread rolling machine, which has the following beneficial effects:

[0017] The clamping device of the thread rolling machine can automatically adjust the height of the workpiece after being clamped and fixed by means of a height adjustment device, thereby ensuring that the workpiece can be aligned with the processing port of the thread rolling machine, replacing manual operation, saving time and effort, and the automatic height adjustment can quickly and accurately complete the height adjustment of the workpiece, avoiding the time consumption and labor cost of manual adjustment, thereby improving production efficiency and processing quality.

[0018] The clamping device of the thread rolling machine can easily clamp cylindrical workpieces of different diameters through the V-groove and positioning points set in the clamping block of the clamping device due to the shape characteristics of the V-groove in the clamping block. The V-groove clamping method can make the workpiece more stable during the clamping process because the two sides of the V-groove can clamp the workpiece at the same time. This two-way clamping can reduce the shaking or movement of the workpiece during the processing, thereby improving the processing accuracy, and the positioning points inside the V-groove can provide greater friction by increasing the contact area with the surface of the clamped workpiece, thereby ensuring the clamping effect of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 A schematic diagram of the structure at the local A of the enlarged part;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the workbench and the lifting seat of the utility model in half section at the first angle;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the workbench and the lifting seat of the utility model in half section at the second angle.

[0023] In the figure: 1. workbench; 2. first bidirectional screw; 3. slider; 4. connecting rod; 5. fixed rod; 6. lifting seat; 7. first motor; 8. cavity; 9. second bidirectional screw; 10. moving block; 11. support column; 12. clamping block; 13. second motor; 14. rectangular groove; 15. groove body; 16. first guide rod; 17. first guide block; 18. V-shaped groove; 19. fixed frame; 20. second guide rod; 21. second guide block; 22. positioning point; 23. supporting leg. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-4, a clamping device for a thread rolling machine, comprising a workbench 1, a height adjustment device and a clamping device, the height adjustment device comprising a first bidirectional screw 2, a slider 3, a connecting rod 4, a fixing rod 5, a lifting seat 6 and a first motor 7, a cavity 8 with an upper opening is opened at the top of the workbench 1, the first bidirectional screw 2 is installed in the cavity 8 for transverse rotation, the top of the first bidirectional screw 2 is hingedly connected to the connecting rod 4, the top of the connecting rod 4 is hingedly installed to the lifting seat 6, the clamping device is installed on the top wall of the lifting seat 6, two groups of fixing rods 5 are arranged in the cavity 8, the fixing rods 5 are symmetrically designed about the central axis of the first bidirectional screw 2, the left and right ends of the fixing rod 5 are respectively slidably connected to the slider 3 at the corresponding position, the first motor 7 is installed on one side wall of the workbench 1, the The output end of the first motor 7 passes through the side wall of the workbench 1 and is connected to the first bidirectional screw 2. In this embodiment, when in use, the workpiece is first fixed on the lifting seat 6 by the clamping device. Then, when the height of the workpiece needs to be adjusted, the first motor 7 is powered on and started. The output end of the first motor 7 drives the first bidirectional screw 2 to rotate. During the rotation, the first bidirectional screw 2 drives the two groups of sliders 3 from both ends to the middle. Under the sliding action of the two groups of fixed rods 5 and the sliders 3, the movement of the sliders 3 is guided to prevent the sliders 3 from rotating. During the movement, the sliders 3 drive the connecting rods 4 and the lifting seat 6 to move upward, so that the lifting seat 6 drives the workpiece clamped and fixed by the clamping device to move up and down, ensuring that the workpiece can be aligned with the processing port of the thread rolling machine, and realizing automatic height adjustment, which replaces manual operation and saves time and effort.

[0026] In actual use, it is further convenient to clamp and fix the workpiece. In this embodiment, the clamping device includes a second bidirectional screw 9, a moving block 10, a support column 11, a clamping block 12 and a second motor 13. A rectangular groove 14 is provided at the top of the lifting seat 6. The second bidirectional screw 9 is rotatably installed in the rectangular groove 14. The moving blocks 10 are installed at both ends of the second bidirectional screw 9. The top of the moving block 10 is installed with the support column 11. The top of the support column 11 is fixedly connected with the clamping block 12. One end of the second bidirectional screw 9 passes through the side wall of the lifting seat 6 and is installed with the second motor 13. When in use, the second motor 13 is powered on and started, driving the second bidirectional screw 9 to start rotating. The two groups of moving blocks 10 move linearly in the rectangular groove 14 driven by the second bidirectional screw 9. The slider 3 drives the support column 11, and the support column 11 drives the clamping block 12 to gradually move from both ends to the middle until the clamping block 12 clamps the workpiece in the middle to achieve clamping and fixing of the workpiece.

[0027] In actual use, the movement of the two groups of clamping blocks 12 is further guided. In this embodiment, the top wall of the lifting seat 6 is symmetrically provided with two groups of groove bodies 15 about the rectangular groove 14. A first guide rod 16 is fixedly installed in the groove body 15. First guide blocks 17 are installed at both ends of the left and right ends of the two groups of the first guide rods 16. The top wall of the first guide block 17 is fixedly connected to the bottom wall of the clamping block 12 at the corresponding position. During the movement, the two groups of clamping blocks 12 drive the first guide blocks 17 to slide on the first guide rods 16, which guides the movement of the clamping blocks 12 and prevents the clamping blocks 12 from deviating from the motion trajectory.

[0028] In actual use, it is further convenient to clamp cylindrical workpieces of different diameters. In this embodiment, a V-groove 18 is provided on the corresponding side of the two groups of clamping blocks 12. Due to the shape characteristics of the V-groove 18, it can easily clamp cylindrical workpieces of different diameters. The clamping method of the V-groove 18 can make the workpiece more stable during the clamping process, because the two sides of the V-groove 18 can clamp the workpiece at the same time. This two-way clamping can reduce the shaking or movement of the workpiece during the processing, thereby improving the processing accuracy. The design of the V-groove 18 makes the loading and unloading of the workpiece simple and quick. This simple operation method can improve production efficiency.

[0029] In actual use, the lifting and lowering of the lifting seat 6 is further guided. In this embodiment, four groups of fixed frames 19 are symmetrically designed on the left and right sides of the top of the workbench 1. A second guide rod 20 is fixedly installed in the fixed frame 19, and a second guide block 21 is slidably installed on the second guide rod 20. Multiple groups of the second guide blocks 21 are fixedly connected to the left and right side walls of the lifting seat 6 respectively. During the lifting and lowering adjustment process, the lifting seat 6 drives the second guide block 21 to slide on the second guide rod 20 in the fixed frame 19, which guides the lifting and lowering of the lifting seat 6 and prevents the lifting seat 6 from deviating from the motion trajectory.

[0030] In actual use, the stability and accuracy of the operation of the first motor 7 and the second motor 13 are further guaranteed. In this embodiment, the first motor 7 and the second motor 13 are servo motors. The servo motor can control the position, speed and torque with high precision. The servo motor adopts closed-loop control and has good stability. It can avoid problems such as stalling and vibration, thereby ensuring the stability and accuracy of the operation of the first motor 7 and the second motor 13.

[0031] In actual use, the holding force of the V-groove 18 is further increased. In this embodiment, a number of positioning points 22 are installed on the inner walls of the two groups of V-grooves 18. The main function of the positioning points 22 is to increase the clamping force during the clamping process to ensure that the clamped workpiece can be firmly fixed in the V-groove 18. These positioning points 22 can provide greater friction by increasing the contact area with the surface of the clamped workpiece, thereby preventing the object from sliding or moving during processing or transportation. In addition, these small protrusions can also help reduce wear on the surface of the clamped object because they can disperse the clamping force to a larger area instead of concentrating it on one point.

[0032] In actual use, in order to further ensure the support stability of the workbench 1, in this embodiment, support legs 23 are provided at the four corners of the bottom wall of the workbench 1. The design of the support legs 23 can make the weight of the bottom wall of the workbench 1 evenly distributed on the ground, avoiding excessive load-bearing at a single point, which may cause the workbench 1 to tilt or be damaged.

[0033] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] 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 clamping device for a thread rolling machine, comprising a workbench (1), a height adjustment device and a clamping device, characterized in that: The height adjustment device comprises a first bidirectional screw (2), a slider (3), a connecting rod (4), a fixed rod (5), a lifting seat (6) and a first motor (7). A cavity (8) with an upper opening is provided at the top of the workbench (1). The first bidirectional screw (2) is installed in the cavity (8) for transverse rotation. The top of the first bidirectional screw (2) is hingedly connected to the connecting rod (4). The top of the connecting rod (4) is hingedly installed to the lifting seat (6). The clamping device is installed on the top wall of the lifting seat (6). Two groups of fixed rods (5) are arranged in the cavity (8). The fixed rods (5) are symmetrically designed about the central axis of the first bidirectional screw (2). The left and right ends of the fixed rods (5) are respectively slidably connected to the slider (3) at the corresponding position. The first motor (7) is installed on one side wall of the workbench (1). The output end of the first motor (7) passes through the side wall of the workbench (1) and is connected to the first bidirectional screw (2).

2. The clamping device of a thread rolling machine according to claim 1, characterized in that: The clamping device comprises a second bidirectional screw (9), a moving block (10), a support column (11), a clamping block (12) and a second motor (13); a rectangular groove (14) is provided at the top of the lifting seat (6); the second bidirectional screw (9) is rotatably installed in the rectangular groove (14); the moving blocks (10) are installed at both left and right ends of the second bidirectional screw (9); the support column (11) is installed at the top of the moving block (10); the clamping block (12) is fixedly connected to the top of the support column (11); one end of the second bidirectional screw (9) passes through the side wall of the lifting seat (6) and is installed with the second motor (13).

3. The clamping device of a thread rolling machine according to claim 2, characterized in that: The top wall of the lifting seat (6) is provided with two groups of groove bodies (15) symmetrically arranged front and rearwardly with respect to the rectangular groove (14), and a first guide rod (16) is fixedly installed in the groove body (15). First guide blocks (17) are installed at both left and right ends of the two groups of the first guide rods (16), and the top wall of the first guide block (17) is fixedly connected to the bottom wall of the clamping block (12) at the corresponding position.

4. The clamping device of a thread rolling machine according to claim 3, characterized in that: A V-shaped groove (18) is provided on one side corresponding to the two groups of clamping blocks (12).

5. The clamping device of a thread rolling machine according to claim 4, characterized in that: Four groups of fixed frames (19) are symmetrically designed on the left and right sides of the top of the workbench (1), a second guide rod (20) is fixedly installed in the fixed frame (19), a second guide block (21) is slidably installed on the second guide rod (20), and multiple groups of the second guide blocks (21) are respectively fixedly connected to the left and right side walls of the lifting seat (6).

6. The clamping device of a thread rolling machine according to claim 5, characterized in that: The first motor (7) and the second motor (13) are both servo motors.

7. The clamping device of a thread rolling machine according to claim 6, characterized in that: The inner side walls of the two groups of V-shaped grooves (18) are both provided with a plurality of positioning points (22).

8. The clamping device of a thread rolling machine according to claim 7, characterized in that: Support legs (23) are provided at the four corners of the bottom wall of the workbench (1).

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