Rotary driving type automatic centering device

Abstract

The utility model discloses a rotary drive type automatic centering device, which relates to the technical field of centering chucks and comprises a fixed mounting body, an equipment drive clamping mechanism is mounted in the fixed mounting body, and an equipment accurate positioning mechanism is mounted at the bottom of the fixed mounting body. The equipment driving and clamping mechanism comprises a centering round hole formed in the fixed mounting body, and a movable gear is connected to the middle of the fixed mounting body. According to the rotary driving type automatic centering device, a positioning screw is installed on one side of a movable plate and penetrates through a positioning pin round hole, when the movable plate moves front and back through a movable gear, the positioning screw can also change along with the movable plate, and when the movable gear moves a positioning claw base to the midpoint, the positioning claw base can move back and forth through the positioning pin round hole. And the movable plate and the movable gear are rotationally fixed through the arrangement of the positioning screw, so that the positioning claw seat clamps the workpiece for a long time, the workpiece is prevented from loosening, and the positioning time of the workpiece is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of centering chucks, in particular to a rotary driven automatic centering device. Background Art

[0002] A centering chuck, also known as a self-centering chuck, is a clamping tool commonly used in industrial processing. The centering chuck can automatically determine the center position of the workpiece and automatically center the workpiece by rotating the adjusting screw, which simplifies the preparation work before processing. The centering chuck can also achieve high-precision clamping and positioning with an accuracy of up to 0.01mm. It is suitable for precision processing to ensure the accuracy and consistency of processing. It is suitable for a variety of processing technologies and workpiece shapes, such as cutting, drilling, etc. It is suitable for processing workpieces of various shapes such as round, hexagonal, square, etc. For this purpose, a rotary driven automatic centering device is proposed.

[0003] The existing Chinese utility model patent with reference announcement number CN202668460U discloses an automatic centering device, which includes a positioning sleeve and an elastic support; the positioning sleeve is composed of an upper half and a lower half; the lower part of the positioning sleeve is fixed with three elastic supports each distributed at 120°; the elastic support includes a joint, a shell, a spring and a spherical support; the spherical support includes a guide rod, a convex edge and a spherical contact; the joint is composed of a guide part and a fixed part; the fixed part is inserted into one end of the shell and fixed, and a sliding groove is provided at the bottom center of the fixed part; the guide rod and the convex edge of the spherical support are arranged in the shell, and the spherical contact passes through the hole at the other end of the shell, and the diameter of the convex edge is greater than the diameter of the hole; part of the guide rod is inserted into the sliding groove of the fixed part on the joint, and a spring is sleeved on the guide rod. The utility model effectively solves the problem of low precision and inconvenient installation when coaxially assembling workpieces of different diameters.

[0004] During the use of the existing rotary drive automatic centering device, the equipment cannot completely and accurately position the workpiece up and down at the same time during automatic centering, resulting in insufficient precision of the workpiece, and the equipment cannot clamp the equipment for a long time after centering, resulting in limited time for positioning the workpiece, which is not convenient for long-term processing and needs to be improved. Therefore, technical personnel in this field provide a rotary drive automatic centering device to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a rotary drive type automatic centering device to solve the problems of device clamping and device precise positioning of the existing rotary drive type automatic centering device proposed in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A rotary drive type automatic centering device comprises a fixed body, a device driving clamping mechanism is installed inside the fixed body, a device precise positioning mechanism is installed at the bottom of the fixed body, the device driving clamping mechanism comprises: a centering circular hole installed inside the fixed body, a moving gear is connected in the middle of the fixed body, a rotating gear for driving the device to move is movably installed on one side of the moving gear, a moving plate is movably installed at the bottom of the moving gear, a connecting rod is connected to the top midpoint of the moving gear, and a positioning screw for long-term fixation is movably connected to the rear of the moving plate;

[0008] The precise positioning mechanism of the equipment includes: a fixed chassis installed below the fixed body, the bottom triangular distribution of the fixed chassis is provided with movable grooves, and a disk nail for driving the equipment to move is connected to one side below the movable groove, and a connecting column is connected to one side of the disk nail, and one end of the connecting column is connected to a semicircular movable ring.

[0009] Preferably, a positioning claw seat is movably installed on the upper side of the fixed body, and a positioning pin circular hole is installed through the side of the fixed body; the positioning pin circular hole is used to position the device.

[0010] Preferably, the positioning claw seat comprises:

[0011] A positioning hole, the positioning hole passes through the interior of the positioning claw seat, and a rod insertion hole passes through the middle of the positioning hole;

[0012] A semicircular ring is located at the front end of the positioning claw seat; the insertion rod hole is convenient for the insertion and connection of the equipment.

[0013] Preferably, the moving gear is connected to the bottom of the positioning claw seat through a connecting rod, and the number of moving gears in each group is two. There is a meshing structure between the moving gears, and there is also a meshing structure between the moving gears and the rotating gear. The positioning screw is inserted into the inside of the circular hole of the positioning pin, and the moving plate is set in a groove inside the fixed body; the rotating gear is the main driving device for the rotation of the equipment.

[0014] Preferably, the centering circular hole passes through the interior of the fixed chassis, and the movable ring is in a circular ring shape after being connected, the disk nail is connected to the lower side of the movable plate, and the disk nail is displaced through the movable plate; the disk nail can control the movement of the movable ring.

[0015] Preferably, the connecting rod is inserted into the rod insertion hole, and the positioning claw seat is arranged in a groove inside the fixed body, and the positioning claw seat is installed above the fixed body in a triangular shape; the connecting rod connects the positioning claw seat.

[0016] Preferably, the circular hole of the positioning pin is located directly below the positioning claw seat, and the positioning claw seat can only move horizontally forward and backward; the positioning claw seat positions and clamps the workpiece.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. This rotary drive type automatic centering device is provided with a rotating gear installed at the lower part of the fixed body, and a meshing structure is formed between the moving gear and the rotating gear. The moving gear is driven by the rotating gear to move forward and backward, and the moving gear is connected to the positioning claw seat through the connecting rod. When the rotating gear rotates clockwise, the moving gear drives the positioning claw seat to move forward horizontally, so that the three-claw positioning claw seat can accurately position the workpiece. When the moving gear rotates, the disk nail under the moving plate will also move horizontally together, and the disk nail is connected between the connecting column and the moving ring. The moving ring is combined into a circle, which assists the positioning claw seat to position the workpiece, so that the center position of the workpiece can be accurately determined.

[0019] 2. This rotary driven automatic centering device has a positioning screw installed on one side of the moving plate. The positioning screw passes through the inside of the circular hole of the positioning pin. When the moving plate moves back and forth through the moving gear, the positioning screw will also change accordingly. When the moving gear moves the positioning claw seat to the midpoint, the moving plate and the moving gear are rotationally fixed by the setting of the positioning screw, so that the positioning claw seat clamps the workpiece for a long time to prevent the workpiece from loosening and increase the positioning time of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a rotary drive type automatic centering device in one embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of a fixed body of a rotary drive type automatic centering device in one embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the fixed chassis structure of a rotary drive type automatic centering device in one embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure below a positioning claw seat of a rotary driven automatic centering device in one embodiment of the utility model.

[0024] 1. Fixed body; 11. Centering circular hole; 12. Rotating gear; 13. Moving gear; 14. Connecting rod; 15. Moving plate; 16. Positioning screw; 2. Positioning claw seat; 21. Positioning hole; 22. Semicircular ring; 23. Rod insertion hole; 3. Positioning pin circular hole; 4. Fixed chassis; 41. Moving groove; 42. Disc nail; 43. Connecting column; 44. Moving ring. DETAILED DESCRIPTION

[0025] 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.

[0026] Combined with Figure 1-Figure 4 In the present embodiment, a rotary driven automatic centering device comprises: a fixed body 1, a device driving clamping mechanism is installed inside the fixed body 1, a device precise positioning mechanism is installed at the bottom of the fixed body 1, and the device driving clamping mechanism comprises: a centering circular hole 11 installed inside the fixed body 1, a moving gear 13 is connected in the middle of the fixed body 1, and a rotating gear 12 is movably installed on one side of the moving gear 13, and a moving plate 15 is movably installed at the bottom of the moving gear 13, a connecting rod 14 is connected to the top midpoint of the moving gear 13, and a positioning screw 16 is movably connected to the rear of the moving plate 15; the moving gear 13 is connected to the bottom of the positioning claw seat 2 through the connecting rod 14, and the number of each group of moving gears 13 is two, there are meshing structures between the moving gears 13, and there are also meshing structures between the moving gears 13 and the rotating gear 12, and the positioning screw 16 is inserted into the inside of the positioning pin circular hole 3, and the moving plate 15 is arranged in a groove inside the fixed body 1.

[0027] Specifically, a positioning claw seat 2 is installed above the fixed body 1, and a connecting rod 14 and a moving gear 13 are connected to the bottom of the positioning claw seat 2. The moving gear 13 is rotated by the rotating gear 12. When the rotating gear 12 rotates clockwise, the moving gear 13 moves forward. During the movement, the positioning claw seat 2 will also move forward synchronously, thereby clamping the workpiece. Then, the positioning screw 16 behind the moving plate 15 is fixed, so that the positioning claw seat 2 can be clamped for a long time. After the workpiece is processed, the rotating gear 12 is rotated counterclockwise to push the moving gear 13 and the moving plate 15 backward, thereby releasing the clamped workpiece and allowing the equipment to automatically drive and rotate.

[0028] A positioning claw seat 2 is movably installed above the fixed body 1, and the positioning claw seat 2 includes: a positioning hole 21, the positioning hole 21 passes through the interior of the positioning claw seat 2, and a rod insertion hole 23 passes through the middle of the positioning hole 21; a semicircular ring 22, and the semicircular ring 22 is located at the front end of the positioning claw seat 2; the connecting rod 14 is inserted into the interior of the rod insertion hole 23, and the positioning claw seat 2 is arranged in a groove inside the fixed body 1, and the positioning claw seat 2 is installed in a triangular shape above the fixed body 1.

[0029] A positioning pin circular hole 3 is installed through the side of the fixed body 1; the positioning pin circular hole 3 is located directly below the positioning claw seat 2, and the positioning claw seat 2 can only move horizontally forward and backward.

[0030] Specifically, the positioning claw seat 2 clamps the workpiece at the midpoint, and the positioning claw seat 2 is connected to the connecting rod 14 and the moving gear 13 through the rod insertion hole 23, so that the positioning claw seat 2 can move back and forth inside the groove, making the movement of the positioning claw seat 2 more convenient and flexible.

[0031] The precise positioning mechanism of the equipment includes: a fixed chassis 4 installed below the fixed body 1, the bottom triangular distribution of the fixed chassis 4 is provided with moving grooves 41, and a disk nail 42 is connected to the lower side of the moving groove 41, and a connecting column 43 is connected to one side of the disk nail 42, and a semicircular moving ring 44 is connected to one end of the connecting column 43; the centering circular hole 11 passes through the interior of the fixed chassis 4, and the moving ring 44 is a circular ring after connection, the disk nail 42 is connected to the lower side of the moving plate 15, and the disk nail 42 is displaced through the moving plate 15.

[0032] Specifically, a movable groove 41 and a disk nail 42 are respectively installed at the bottom of the fixed chassis 4. The disk nail 42 is connected to the bottom of the movable plate 15, so that the disk nail 42 moves forward and backward according to the movable plate 15, and a connecting column 43 and a movable ring 44 are connected to one side of the disk nail 42. When the movable plate 15 moves to the front, the movable ring 44 is in a circular shape, which can assist the equipment in clamping and positioning.

[0033] Working principle: First, place the workpiece to be processed inside the centering circular hole 11, and use the rotation of the rotating gear 12 to drive the moving gear 13 to rotate. The rotating gear 12 and the moving gear 13 are meshingly connected. When the rotating gear 12 rotates clockwise, the moving gear 13 can be rotated forward. When the moving gear 13 moves forward, the positioning claw seat 2 connected above will also move forward at the same time. A semicircular ring 22 is provided on the front side of the positioning claw seat 2. When the semicircular ring 22 moves to the front, it is combined into a circle, which can automatically locate and clamp the workpiece in the centering circular hole 11, so that the equipment is automatically centered. When the moving gear 13 is pushed forward, the moving plate 15 below It will also move, and at the same time, the disc nail 42 under the moving plate 15 will also move inside the moving groove 41. When the disc nail 42 moves to the front, the moving ring 44 is a circle, which can assist the positioning claw seat 2 in clamping and positioning to prevent the workpiece from shifting. At the same time, the positioning screw 16 is rotated and fixed to fix the positioning claw seat 2 for a long time. Finally, after the workpiece is clamped, the rotating gear 12 is rotated counterclockwise to move the moving gear 13, the moving plate 15 and the moving ring 44 and other settings backward, so that the positioning claw seat 2 returns to the original position, which is convenient for the next clamping and positioning. In this way, the entire use process of the entire rotary drive automatic centering device is completed.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rotary drive automatic centering device, comprising: A fixed body (1), wherein a device driving clamping mechanism is installed inside the fixed body (1), and a device precise positioning mechanism is installed at the bottom of the fixed body (1), characterized in that the device driving clamping mechanism comprises: a centering circular hole (11) installed inside the fixed body (1), a moving gear (13) is connected in the middle of the fixed body (1), and a rotating gear (12) is movably installed on one side of the moving gear (13), and a moving plate (15) is movably installed at the bottom of the moving gear (13), a connecting rod (14) is connected to the top midpoint of the moving gear (13), and a positioning screw (16) is movably connected to the rear of the moving plate (15); The device precise positioning mechanism comprises: a fixed chassis (4) installed below the fixed body (1), the bottom of the fixed chassis (4) is triangularly distributed with movable grooves (41), and a disk nail (42) is connected to one side below the movable groove (41), and a connecting column (43) is connected to one side of the disk nail (42), and one end of the connecting column (43) is connected to a semicircular movable ring (44).

2. A rotary drive automatic centering device according to claim 1, characterized in that: A positioning claw seat (2) is movably installed on the upper side of the fixed body (1), and a positioning pin circular hole (3) is installed through the side of the fixed body (1).

3. A rotary drive automatic centering device according to claim 2, characterized in that: The positioning claw seat (2) comprises: A positioning hole (21), wherein the positioning hole (21) penetrates the interior of the positioning claw seat (2), and a rod insertion hole (23) penetrates the middle of the positioning hole (21); A semicircular ring (22) is located at the front end of the positioning claw seat (2).

4. A rotary drive automatic centering device according to claim 2, characterized in that: The movable gear (13) is connected to the bottom of the positioning claw seat (2) through a connecting rod (14), and the movable gear (13) is arranged in two groups per group. The movable gears (13) are meshing structures, and the movable gears (13) and the rotating gear (12) are also meshing structures. The positioning screw (16) is inserted into the inside of the positioning pin circular hole (3), and the movable plate (15) is arranged in a groove inside the fixed body (1).

5. The rotary drive automatic centering device according to claim 1, characterized in that: The centering circular hole (11) penetrates the interior of the fixed chassis (4), and the movable ring (44) is connected to form a circular ring shape. The disk nail (42) is connected to the lower side of the movable plate (15), and the disk nail (42) is displaced through the movable plate (15).

6. The rotary drive automatic centering device according to claim 3, characterized in that: The connecting rod (14) is inserted into the rod insertion hole (23), and the positioning claw seat (2) is arranged in a groove inside the fixed body (1), and the positioning claw seat (2) is installed above the fixed body (1) in a triangular shape.

7. The rotary drive automatic centering device according to claim 2, characterized in that: The positioning pin circular hole (3) is located directly below the positioning claw seat (2), and the positioning claw seat (2) can only move horizontally forward and backward.

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