Adjustable mechanical chucking device for internal and external circles

Abstract

This invention discloses an adjustable mechanical clamping device for inner and outer circles, relating to the field of mechanical clamping technology. It includes a clamping mechanism and an adjusting mechanism, with the adjusting mechanism mounted on the clamping mechanism. The clamping mechanism includes a device base, a motor mount fixedly mounted on the device base, a main motor fixedly mounted on the motor mount, and a drive chassis rotatably mounted on the device base. The output shaft of the main motor is fixedly connected to the drive chassis. A connecting rod rotatably mounts on the drive chassis, a torsion seat fixedly mounted on the connecting rod, and a transmission pulley rotatably mounted on the torsion seat. A sliding groove is provided at the upper end of the device base, and a sliding seat is slidably mounted on the sliding groove. The upper end of the transmission pulley is rotatably mounted on the sliding seat. This invention allows for adjustment of the orientation of the clamping mechanism through the adjusting mechanism. The device can clamp either the inner or outer circular surface of a part, and both clamping methods can be achieved by controlling the forward and reverse rotation of a single motor.

Description

Technical Field

[0001] This invention relates to the field of mechanical clamping technology, and in particular to a mechanical clamping device with adjustable inner and outer circles. Background Technology

[0002] In machining, testing, and assembly, stable and precise clamping of rotating parts such as discs, rings, or cylinders is crucial for ensuring process quality. Existing technologies include some adjustable general-purpose clamps. These devices are often single-function, typically only capable of either external or internal clamping. Switching from external to internal clamping requires stopping the machine and manually replacing the entire clamping module, which is cumbersome and cannot meet the rapid changeover requirements of modern production lines. This invention provides a compact, easily adjustable, and highly reliable mechanical clamping device that can quickly and automatically switch between internal and external clamping modes and effectively solves the problem of tension fluctuations in the transmission system caused by radial movement of the grippers, thereby ensuring the accuracy and efficiency of the entire clamping process. Summary of the Invention

[0003] The purpose of this invention is to provide a device that can clamp the inner or outer circular surface of a part, and both clamping methods can be achieved by controlling the forward and reverse rotation of a single motor.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows: an adjustable mechanical clamping device with inner and outer circles, comprising a clamping mechanism and an adjusting mechanism, wherein the adjusting mechanism is mounted on the clamping mechanism, the clamping mechanism comprising a device base, a motor base fixedly mounted on the device base, a main motor fixedly mounted on the motor base, a drive chassis rotatably mounted on the device base, the output shaft of the main motor being fixedly connected to the drive chassis, a connecting rod rotatably mounted on the drive chassis, a torsion seat fixedly mounted on the connecting rod, a transmission pulley rotatably mounted on the torsion seat, a sliding groove provided at the upper end of the device base, a sliding seat slidably mounted on the sliding groove, the upper end of the transmission pulley rotatably mounted on the sliding seat, a clamping seat rotatably mounted on the sliding seat, and the lower end of the clamping seat being connected to... The upper end of the transmission pulley is fixedly connected, and a sliding chuck is slidably installed on the clamping seat. The adjustment mechanism includes an adjustment shaft, which is rotatably mounted on a motor base. An adjustment seat is fixedly mounted on the adjustment shaft, and a drive pulley and a support pulley are rotatably mounted on the adjustment seat. A torsion spring is installed on the adjustment shaft, with one end of the torsion spring fixedly connected to the adjustment seat and the other end fixedly connected to the motor base. A drive motor is fixedly mounted on the adjustment seat, and the output shaft of the drive motor is fixedly connected to the drive pulley. The transmission pulley, sliding seat, and clamping seat of the clamping mechanism are arranged in four sets in the circumferential direction. A transmission belt is installed on the four sets of transmission pulleys, drive pulleys, and support pulleys, and the transmission pulleys, transmission belts, drive pulleys, and support pulleys form a belt connection.

[0005] Furthermore, a rotating rod is rotatably mounted on the clamping seat, a friction wheel is fixedly mounted on the rotating rod, the friction wheel is in frictional engagement with the sliding chuck, and a side clamping plate is fixedly mounted on the rotating rod.

[0006] Furthermore, the clamping device also includes an annular clamping mechanism, which includes an upper turntable. The upper turntable is rotatably mounted on the drive chassis. A lead screw seat is fixedly mounted on the device base. A transmission lead screw is rotatably mounted on the lead screw seat. The upper turntable is fixedly connected to the transmission lead screw. A lifting slider is slidably mounted on the lead screw seat. The lifting slider and the transmission lead screw form a threaded engagement. A transmission rocker arm is rotatably mounted on the lifting slider. A pushing slider is slidably mounted on the slide groove of the device base. The pushing slider is rotatably connected to the transmission rocker arm. An internal chuck is fixedly mounted on the pushing slider.

[0007] Furthermore, a torsion spring is installed between the drive chassis and the upper turntable.

[0008] Furthermore, the front end of the sliding chuck is made of an elastic material that can conform to the surface of the clamping component.

[0009] Furthermore, the sliding chuck is at the same height as the internal chuck.

[0010] Furthermore, the number of rotations of the drive pulley driven by the drive motor is limited, and the number of rotations is just enough to satisfy the clamping seat rotating half a turn on the sliding seat.

[0011] Furthermore, the rotating rod, friction wheel, and side clamping plate are symmetrically arranged on both sides of the clamping seat.

[0012] The beneficial effects of this invention compared with the prior art are: (1) This invention can adjust the orientation of the clamping mechanism by setting an adjustment mechanism, and can clamp the inner or outer circular surface of the part. Both clamping methods can be achieved by controlling the forward and reverse rotation of a single motor; (2) This invention can clamp square parts on the inner or outer side; (3) This invention can process two sets of ring-shaped parts at the same time, and can achieve simultaneous clamping of two types of parts, thereby improving space utilization. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 This is a top view of the overall structure of the present invention.

[0015] Figure 3 This is a front view of the overall structure of the present invention.

[0016] Figure 4 This is a schematic diagram of the device base of the present invention.

[0017] Figure 5 This is a schematic diagram of the internal structure of the present invention.

[0018] Figure 6 This is a schematic diagram of the clamping mechanism of the present invention.

[0019] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.

[0020] Reference numerals: 1-Device base; 2-Motor base; 3-Main motor; 4-Drive chassis; 5-Connecting rod; 6-Torsion seat; 7-Transmission pulley; 8-Sliding seat; 9-Clamping seat; 10-Sliding chuck; 11-Rotating rod; 12-Friction wheel; 13-Side clamping plate; 14-Transmission belt; 15-Adjusting shaft; 16-Adjusting seat; 17-Drive pulley; 18-Support pulley; 19-Torsion spring; 20-Drive motor; 21-Upper turntable; 22-Screw seat; 23-Transmission screw; 24-Lifting slider; 25-Transmission swing arm; 26-Push slider; 27-Internal chuck. Detailed Implementation

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example: Figures 1-7The illustrated mechanical clamping device with adjustable inner and outer diameters includes a clamping mechanism and an adjusting mechanism. The adjusting mechanism is mounted on the clamping mechanism. The clamping mechanism includes a device base 1, a motor base 2 fixedly mounted on the device base 1, a main motor 3 fixedly mounted on the motor base 2, a drive chassis 4 rotatably mounted on the device base 1, the output shaft of the main motor 3 fixedly connected to the drive chassis 4, a connecting rod 5 rotatably mounted on the drive chassis 4, a torsion seat 6 fixedly mounted on the connecting rod 5, and a transmission pulley 7 rotatably mounted on the torsion seat 6. A sliding groove is provided at the upper end of the device base 1, and a sliding seat 8 is slidably mounted on the sliding groove. The upper end of the transmission pulley 7 is rotatably mounted on the sliding seat 8, and a clamping seat 9 is rotatably mounted on the sliding seat 8. The lower end of the clamping seat 9 is fixedly connected to the upper end of the transmission pulley 7, and a sliding clamp is slidably mounted on the clamping seat 9. The head 10 includes an adjustment mechanism comprising an adjustment shaft 15, which is rotatably mounted on a motor base 2. An adjustment seat 16 is fixedly mounted on the adjustment shaft 15. A drive pulley 17 and a support pulley 18 are rotatably mounted on the adjustment seat 16. A torsion spring 19 is mounted on the adjustment shaft 15. One end of the torsion spring 19 is fixedly connected to the adjustment seat 16, and the other end of the torsion spring 19 is fixedly connected to the motor base 2. A drive motor 20 is fixedly mounted on the adjustment seat 16. The output shaft of the drive motor 20 is fixedly connected to the drive pulley 17. The clamping mechanism has four sets of transmission pulleys 7, sliding seats 8, and clamping seats 9 arranged in the circumferential direction. A transmission belt 14 is mounted on the four sets of transmission pulleys 7, drive pulleys 17, and support pulleys 18. The transmission pulleys 7, transmission belts 14, drive pulleys 17, and support pulleys 18 form a belt connection. The main motor 3 starts, driving the drive chassis 4 to rotate. The rotation of the drive chassis 4 pulls the connecting rod 5, which in turn moves the torsion seat 6. The torsion seat 6 moves the transmission pulley 7, which in turn moves the sliding seat 8 onto the device base 1. The movement of the sliding seat 8 moves the clamping seat 9 towards the center or outwards. The clamping seat 9 moves the sliding chuck 10, which moves towards the center to clamp the outer surface of the central part. The drive motor 20 starts, driving the drive pulley 17 to rotate. The drive pulley 17 drives the support pulley 18 and the four sets of transmission pulleys 7 to rotate. The rotation of the transmission pulleys 7 drives the clamping seat 9 to rotate. The clamping seat 9 rotates half a turn, causing the sliding chuck 10 to face the device. The outer end is used for clamping the inner circular surface of the part. At this time, the main motor 3 rotates in the reverse direction, driving the chassis 4 to rotate in the reverse direction, which drives the transmission pulley 7 to move outward. At this time, the clamping seat 9 also moves outward. During the process of the connecting rod 5 pushing the transmission pulley 7 to move, the tension of the transmission belt 14 will change. At this time, the adjusting shaft 15 rotates on the motor seat 2, driving the adjusting seat 16, the drive pulley 17, and the support pulley 18 to rotate circumferentially, dynamically adjusting the tension of the transmission belt 14 to ensure the rotational transmission operation. By setting two sets of pulleys, the drive pulley 17 and the support pulley 18, the adjustment is different from a single tensioning pulley, reducing the space occupied and the rotation angle is smaller, but the adjustment effect is better.

[0023] A rotating rod 11 is rotatably mounted on the clamping seat 9. A friction wheel 12 is fixedly mounted on the rotating rod 11. The friction wheel 12 is in frictional engagement with the sliding chuck 10. A side clamping plate 13 is fixedly mounted on the rotating rod 11. After the sliding chuck 10 clamps the center part, it continues to press the part. The sliding chuck 10 slides on the clamping seat 9, and the two ends of the sliding chuck 10 rub against the friction wheel 12. The friction wheel 12 rotates on the clamping seat 9, and the friction wheel 12 drives the rotating rod 11 to rotate. The rotating rod 11 drives the side clamping plate 13 to rotate. The side clamping plate 13 provides auxiliary clamping for the part from both sides, enhancing the clamping tightness. When clamping the inner surface of the part, the side clamping plate 13 can also be pressed against the inner wall of the part. When the drive motor 20 drives the drive pulley 17 to rotate, causing the clamping seat 9 to rotate 90°, the side clamping plate 13 faces the inside and outside of the device. At this time, the device can center and clamp the outside of a square part, or clamp the inside of a large square part.

[0024] The clamping device also includes an annular clamping mechanism, which includes an upper turntable 21. The upper turntable 21 is rotatably mounted on the drive chassis 4. A lead screw seat 22 is fixedly mounted on the device base 1. A transmission lead screw 23 is rotatably mounted on the lead screw seat 22. The upper turntable 21 is fixedly connected to the transmission lead screw 23. A lifting slider 24 is slidably mounted on the lead screw seat 22. The lifting slider 24 and the transmission lead screw 23 form a threaded engagement. A transmission swing rod 25 is rotatably mounted on the lifting slider 24. A pushing slider 26 is slidably mounted on the slide groove of the device base 1. The pushing slider 26 is rotatably connected to the transmission swing rod 25. An internal chuck 27 is fixedly mounted on the pushing slider 26. When welding two sets of ring-shaped parts, the outer circular surface of the outer part needs to be clamped, and the inner circular surface of the inner part needs to be clamped and fixed. At this time, a ring clamping mechanism is used to drive the chassis 4 to rotate, which in turn drives the upper turntable 21 to rotate. The upper turntable 21 drives the transmission screw 23 to rotate, which drives the lifting slider 24 to move up and down. The lifting slider 24 drives the transmission swing arm 25 to move, which drives the push slider 26 to slide on the device base 1. The push slider 26 drives the internal chuck 27 to slide outward. The internal chuck 27 clamps the inner circular surface of the inner part, while the sliding chuck 10 clamps the outer circular surface of the outer part, which facilitates the processing of the two sets of parts.

[0025] A torsion spring is installed between the drive chassis 4 and the upper turntable 21. By setting the torsion spring, when the drive chassis 4 drives the sliding chuck 10 to clamp inward, and the upper turntable 21 drives the internal chuck 27 to clamp outward, after the internal chuck 27 has completed clamping, the rotation of the drive chassis 4 will not drive the upper turntable 21 to rotate. The drive chassis 4 continues to rotate to drive the sliding chuck 10 to clamp, thereby achieving distributed clamping of the two parts.

[0026] The front end of the sliding chuck 10 is made of elastic material, which can conform to the surface of the clamping part.

[0027] The sliding chuck 10 is at the same height as the internal chuck 27.

[0028] The number of rotations of the drive pulley 17 driven by the drive motor 20 is limited, and the number of rotations is just enough to make the clamping seat 9 rotate half a turn on the sliding seat 8.

[0029] The rotating rod 11, friction wheel 12, and side clamping plates 13 are symmetrically arranged on both sides of the clamping seat 9. The two sets of symmetrically arranged side clamping plates 13 are used to clamp the inner or outer sides of the square parts, respectively.

Claims

1. A mechanical clamping device with adjustable inner and outer diameters, comprising a clamping mechanism and an adjusting mechanism, wherein the adjusting mechanism is mounted on the clamping mechanism, and the clamping mechanism comprises a device base (1), a motor base (2) is fixedly mounted on the device base (1), and a main motor (3) is fixedly mounted on the motor base (2), characterized in that, A drive chassis (4) is rotatably mounted on the device base (1). The output shaft of the main motor (3) is fixedly connected to the drive chassis (4). A connecting rod (5) is rotatably mounted on the drive chassis (4). A torsion seat (6) is fixedly mounted on the connecting rod (5). A transmission pulley (7) is rotatably mounted on the torsion seat (6). A slide groove is provided at the upper end of the device base (1). A sliding seat (8) is slidably mounted on the slide groove. The upper end of the transmission pulley (7) is rotatably mounted on the sliding seat (8). A clamping seat (9) is rotatably mounted on the sliding seat (8). The lower end of the clamping seat (9) is fixedly connected to the upper end of the transmission pulley (7). A sliding chuck (10) is slidably mounted on the clamping seat (9). The adjustment mechanism includes an adjustment shaft (15). The adjustment shaft (15) is rotatably mounted on the motor base (2). An adjustment mechanism is fixedly mounted on the adjustment shaft (15). The section seat (16) and the adjustment seat (16) are rotatably mounted with a drive pulley (17) and a support pulley (18). A torsion spring (19) is mounted on the adjustment shaft (15). One end of the torsion spring (19) is fixedly connected to the adjustment seat (16), and the other end of the torsion spring (19) is fixedly connected to the motor seat (2). A drive motor (20) is fixedly mounted on the adjustment seat (16). The output shaft of the drive motor (20) is fixedly connected to the drive pulley (17). The transmission pulley (7), the sliding seat (8), and the clamping seat (9) of the clamping mechanism are arranged in four sets in the circumferential direction. A transmission belt (14) is mounted on the four sets of transmission pulleys (7), drive pulleys (17), and support pulleys (18). The transmission pulleys (7), the transmission belts (14), the drive pulleys (17), and the support pulleys (18) form a belt connection.

2. An adjustable internal and external mechanical chucking device according to claim 1, characterized in that: A rotating rod (11) is rotatably mounted on the clamping seat (9), and a friction wheel (12) is fixedly mounted on the rotating rod (11). The friction wheel (12) is in frictional engagement with the sliding chuck (10), and a side clamping plate (13) is fixedly mounted on the rotating rod (11). The friction wheel (12) rotates on the clamping seat (9), and the friction wheel (12) drives the rotating rod (11) to rotate. The rotating rod (11) drives the side clamping plate (13) to rotate.

3. An adjustable internal and external mechanical chucking device according to claim 2, characterized in that: The clamping device also includes an annular clamping mechanism, which includes an upper turntable (21). The upper turntable (21) is rotatably mounted on the drive chassis (4). A lead screw seat (22) is fixedly mounted on the device base (1). A transmission lead screw (23) is rotatably mounted on the lead screw seat (22). The upper turntable (21) is fixedly connected to the transmission lead screw (23). A lifting slider (24) is slidably mounted on the lead screw seat (22). The lifting slider (24) and the transmission lead screw (23) form a threaded engagement. A transmission swing rod (25) is rotatably mounted on the lifting slider (24). A pushing slider (26) is slidably mounted on the slide groove of the device base (1). The pushing slider (26) is rotatably connected to the transmission swing rod (25). An internal chuck (27) is fixedly mounted on the pushing slider (26). A torsion spring is installed between the drive chassis (4) and the upper turntable (21).

4. An adjustable internal and external mechanical chucking device according to claim 3, characterized in that: The front end of the sliding chuck (10) is made of elastic material, which can fit the surface of the clamping part.

5. An adjustable internal and external mechanical chucking device according to claim 4, characterized in that: The sliding chuck (10) has the same height as the inner chuck (27).

6. The mechanical clamping device with adjustable inner and outer circles according to claim 5, characterized in that: The number of rotations of the drive motor (20) driving the drive pulley (17) is limited, and the number of rotations is just enough to satisfy the clamping seat (9) rotating half a turn on the sliding seat (8).

7. The mechanical clamping device with adjustable inner and outer circles according to claim 6, characterized in that: The rotating rod (11), friction wheel (12), and side clamping plate (13) are symmetrically arranged on both sides of the clamping seat (9).

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