Automatic centering clamp

Abstract

The utility model relates to the technical field of centering clamps, in particular to an automatic centering clamp which comprises a mounting plate, a mounting hole is formed in the surface of the mounting plate, a first base is fixedly mounted on the surface of the mounting plate, a motor is fixedly mounted on the side face of the first base, a threaded rod is fixedly mounted at the output end of the motor, and a second base is fixedly mounted on the threaded rod. The surface of the threaded rod is in threaded connection with a sliding block, the surface of the first base is fixedly connected with a second base, and a first notch and a second sliding groove are formed in the surface of the second base. Through mutual cooperation of a first base, a motor, a threaded rod, a first connecting rod, a second connecting rod and other structures, a workpiece on the surface of a second base can be clamped without manpower, all parts are jointly stressed to move, stress is more uniform, and the service life of equipment is prolonged; and the clamping blocks can clamp workpieces with different sizes, so that the applicability of the equipment is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of centering fixture technology, and in particular to an automatic centering fixture. Background Technology

[0002] A centering fixture is a clamping mechanism that combines the functions of workpiece positioning, centering, and clamping. It is commonly used in machining to ensure that the workpiece maintains accurate position and orientation during processing. Announcement number CN216542892U describes an automatic workpiece clamping centering fixture. This device uses the elastic force of a tension spring to drive a drive plate along the direction of the spring's tension, thereby driving the object holder towards the center via a drive wheel. It can adaptively clamp the object as it shrinks, keeping it in a clamped state. However, due to prolonged use, the spring remains under tension, which can easily deform and lead to insufficient clamping force. Furthermore, the device requires manual rotation of the drive plate to fix the position of the tension spring and achieve the desired clamping effect. Therefore, designing an automatic centering fixture is a pressing problem that needs to be solved. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.

[0004] This utility model adopts the following technical solution: an automatic centering fixture, including a mounting plate, a mounting hole on the surface of the mounting plate, a base one fixedly mounted on the surface of the mounting plate, a motor fixedly mounted on the side of the base one, a threaded rod fixedly mounted on the output end of the motor, a slider threadedly connected to the surface of the threaded rod, a base two fixedly connected to the surface of the base one, a slot one and a sliding groove two on the surface of the base two, a clamping block slidably connected to the surface of the slot one, a turntable one and a turntable two rotatably connected to the surface of the base two, a connecting rod two and a connecting rod three fixedly connected to the surfaces of the turntable one and the turntable two respectively, and a connecting rod one fixedly connected to the surfaces of the connecting rod two and the connecting rod three.

[0005] Preferably, connecting rod two and connecting rod three are fixed to the surface of connecting rod one by bolt two, and the slider and connecting rod one are fixed together by bolt one. Here, through the mutual cooperation of bolt one and connecting rod one, the locking block can move stably inside the slot one.

[0006] Preferably, the surfaces of turntable one and turntable two are provided with sliding grooves, and there are two sets of sliding grooves, with two sliding grooves in each set. Here, the position of the clamping block can be limited by the sliding grooves on turntable one and turntable two, making the clamping process more stable.

[0007] Preferably, the clamping opening of the clamping block is arc-shaped, and a round rod and an anti-slip rubber sleeve are fixedly connected to the surface of the clamping block. Here, the anti-slip rubber sleeve can increase the friction between the workpiece and the clamping block, reducing the risk of detachment. At the same time, the rubber has a certain degree of resilience, which provides some protection for workpieces that are prone to deformation.

[0008] Preferably, there are four sets of clamping blocks, which are circumferentially distributed on the surface of the base two. This design of four sets of clamping blocks improves positioning accuracy, enhances applicability and clamping force, and better clamps workpieces of different shapes.

[0009] Preferably, an oil-soaked sponge and a rotating shaft are fixedly connected to two sides of the base two, and ball bearings are rotatably connected to the surface of the rotating shaft. This structure, including the oil-soaked sponge and ball bearings, facilitates routine maintenance of the clamp.

[0010] Preferably, the surface of the ball abuts against the surfaces of the oil-soaked sponge and the clamping block. This design allows the clamping block to move more smoothly on the surface of the slot.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, the cooperation of the base one, motor, threaded rod, connecting rod one and connecting rod two allows the workpiece on the surface of the base two to be clamped without manual force. All components move together under the force, resulting in more uniform force distribution and extending the service life of the equipment. The design of the slide groove one and slide groove two allows the clamping block to hold workpieces of different sizes, enhancing the applicability of the equipment.

[0013] 2. In this utility model, through the design of structures such as oil-soaked sponge and ball bearings, when the locking block moves inside the first slide groove, it drives the ball bearings with lubricating oil on the surface to rotate, so that both sides of the locking block are smooth and the movement is more stable. Attached Figure Description

[0014] Figure 1 A schematic diagram of an automatic centering fixture is provided for this utility model;

[0015] Figure 2 A partial structural diagram of an automatic centering fixture is provided for this utility model;

[0016] Figure 3 An exploded view of an automatic centering fixture is provided for this utility model;

[0017] Figure 4 This utility model provides an exploded view of the clamping block in an automatic centering fixture;

[0018] Figure 5This utility model provides a cross-sectional structural diagram of two parts of the base in an automatic centering fixture.

[0019] Legend:

[0020] 1. Mounting plate; 2. Mounting hole; 3. Base 1; 4. Motor; 5. Threaded rod; 6. Slider; 7. Bolt 1; 8. Connecting rod 1; 9. Connecting rod 2; 10. Bolt 2; 11. Turntable 1; 12. Slide groove 1; 13. Connecting rod 3; 14. Clamping block; 15. Base 2; 16. Groove 1; 17. Slide groove 2; 18. Round rod; 19. Anti-slip rubber sleeve; 20. Turntable 2; 21. Ball bearing; 22. Rotating shaft; 23. Oil-soaked sponge. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1

[0024] Please see Figure 1-4This utility model provides a technical solution: an automatic centering fixture, including a mounting plate 1, with mounting holes 2 on the surface of the mounting plate 1, a base 3 fixedly mounted on the surface of the mounting plate 1, a motor 4 fixedly mounted on the side of the base 3, a threaded rod 5 fixedly mounted on the output end of the motor 4, a slider 6 threadedly connected to the surface of the threaded rod 5, a base 15 fixedly connected to the surface of the base 3, a slot 16 and a sliding groove 17 on the surface of the base 15, a clamping block 14 slidably connected to the surface of the slot 16, a turntable 11 and a turntable 20 rotatably connected to the surface of the base 25, connecting rods 29 and 313 fixedly connected to the surfaces of the turntables 11 and 20 respectively, connecting rods 18 fixedly connected to the surfaces of the connecting rods 29 and 313, and connecting rods 29 and 313 fixedly fixed to the surface of the connecting rods 18 by bolts 210, and the slider 6 and the connecting rods 18 fixedly connected by bolts 17. The cooperation of structures such as 7 and connecting rod 8 allows the clamping block to move stably inside the slot 16. The surfaces of turntable 11 and turntable 20 are provided with sliding grooves 12. There are two sets of sliding grooves 12, with two in each set. The position of the clamping block can be limited by the sliding grooves 12 on turntable 11 and turntable 20, making the clamping process more stable. The clamping opening of clamping block 14 is arc-shaped. A round rod 18 and an anti-slip rubber sleeve 19 are fixedly connected to the surface of clamping block 14. The anti-slip rubber sleeve 19 can increase the friction between the workpiece and clamping block 14, reducing the risk of falling off. At the same time, the rubber has a certain rebound force, which has a certain protective effect on workpieces that are prone to deformation. There are four sets of clamping blocks 14, which are circumferentially distributed on the surface of base 2 15. The design of four sets of clamping blocks 14 can improve the positioning accuracy, enhance applicability and clamping force, and better clamp workpieces of different shapes.

[0025] Example 2

[0026] Please see Figure 5 The two sides of the base 215 are fixedly connected with an oil-soaked sponge 23 and a rotating shaft 22. The surface of the rotating shaft 22 is rotatably connected with a ball bearing 21. The structure of the oil-soaked sponge 23 and the ball bearing 21 facilitates the daily maintenance of the clamp. The surface of the ball bearing 21 abuts against the surface of the oil-soaked sponge 23 and the clamping block 14. This design allows the clamping block to move more smoothly on the surface of the slot 16.

[0027] Working principle: When using this equipment, the user first needs to place the workpiece inside the base 2 15, and then start the motor 4, which will drive the turntable 2 20 and turntable 1 11, which are fixed on the surfaces of the connecting rod 3 13 and the connecting rod 2 9, to rotate. When the motor 4 drives the slider 6 to move forward on the surface of the threaded rod 5, the turntable 2 20 will rotate clockwise, and the base 2 15 will rotate counterclockwise. In this way, the four sets of clamping blocks 14 move continuously towards the center of the base 2 15 on the surface of the slot 1 16, completing the clamping and positioning of the workpiece. Since the four sets of clamping blocks 14 operate synchronously, they can effectively push the workpiece that is off-center to the center of the base 2 15 for clamping. At the same time, the sides of the slot 1 16 are provided with oil-impregnated sponges 23 and ball bearings 21, which can make the sliding of the clamping blocks 14 smoother.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An automatic centering fixture comprising a mounting plate (1), characterized in that: The surface of mounting plate (1) is provided with mounting hole (2), the surface of mounting plate (1) is fixedly installed with base one (3), the side surface of base one (3) is fixedly installed with motor (4), the output end of motor (4) is fixedly installed with threaded rod (5), the surface of threaded rod (5) is threadedly connected with sliding block (6), the surface of base two (15) is fixedly connected with base two (15), the surface of base two (15) is provided with notch one (16) and sliding groove two (17), the surface of notch one (16) is slidably connected with clamping block (14), the surface of base two (15) is rotatably connected with turntable one (11) and turntable two (20), the surface of turntable one (11) and turntable two (20) is fixedly connected with connecting rod two (9) and connecting rod three (13) respectively, the surface of connecting rod two (9) and connecting rod three (13) is fixedly connected with connecting rod one (8).

2. The self-centering fixture of claim 1, wherein: The connecting rod two (9) and connecting rod three (13) are fixed on the surface of connecting rod one (8) through bolt two (10), and the sliding block (6) and connecting rod one (8) are fixed through bolt one (7).

3. The self-centering fixture of claim 1, wherein: The surface of turntable one (11) and turntable two (20) is provided with sliding groove one (12), the number of sliding groove one (12) is two groups, and the number of one group of sliding groove one (12) is two.

4. The self-centering fixture of claim 1, wherein: The clamping opening of clamping block (14) is arc-shaped, and the surface of clamping block (14) is fixedly connected with round rod (18) and anti-skid rubber sleeve (19).

5. The self-centering fixture of claim 1, wherein: The number of clamping block (14) is four groups, and four groups of clamping block (14) are circumferentially distributed on the surface of base two (15).

6. The self-centering fixture of claim 1, wherein: The two side surfaces of base two (15) are fixedly connected with oil-soaked sponge (23) and rotating shaft (22), and the surface of rotating shaft (22) is rotatably connected with ball (21).

7. The self-centering fixture of claim 6, wherein: The surface of ball (21) abuts against the surfaces of oil-soaked sponge (23) and clamping block (14).

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