CN220260734U

CN220260734U - Self-centering clamp

Info

Publication number: CN220260734U
Application number: CN202321500409.0U
Authority: CN
Inventors: 陈小红; 姜晓强; 尹林志; 邹金桥; 陶勇; 顾其俊; 赵传强
Original assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Current assignee: Zhejiang Institute of Mechanical and Electrical Engineering Co Ltd
Priority date: 2023-06-13
Filing date: 2023-06-13
Publication date: 2023-12-29
Anticipated expiration: 2033-06-13

Abstract

The utility model discloses a self-centering clamp, which comprises a base plate, wherein the base plate is fixedly connected with a shell; the clamping assembly comprises two moving plates and a motor, wherein the two moving plates and the motor are oppositely arranged, the motor is fixedly connected in the shell, the moving plates are located on the base plate, the moving plates are in sliding connection with the base plate, two sliding holes are formed in the base plate, the moving plates penetrate through the sliding holes and extend into the shell, the two moving plates are respectively connected with the motor in a driving mode, two first guide sliding rails are fixedly connected on the base plate, first grooves are formed in the moving plates, the first guide sliding rails are located in the first grooves, first arc clamping plates are fixedly connected on the moving plates, and the two first arc clamping plates are oppositely arranged. The movable plate moves in the sliding hole, so that a larger moving distance can be generated, objects with different sizes can be conveniently clamped, and the device is more convenient to use.

Description

Self-centering clamp

Technical Field

The utility model relates to the technical field of fixture tools, in particular to a self-centering fixture.

Background

The fixture is generally an auxiliary tool for positioning, limiting and fastening parts during machining the parts in the machining industry, and the fixture is widely applied to improving the production efficiency.

The patent of publication No. CN204545903U discloses a self-centering fixture, which comprises a supporting plate, be provided with the cover shape support on the backup pad upper surface, be provided with the round pin axle in the cover shape support, the epaxial rotation of round pin is connected with two shift forks, the pneumatic cylinder is installed at cover shape support top center, the piston rod of pneumatic cylinder is connected with the pull rod, the shift head of two shift forks stretches into in the recess of pull rod, backup pad sliding connection has two slides, all link with the clamp splice below the slide, all processing has the V-arrangement clamp mouth on the adjacent face of two clamp splice, drive two shift forks through the pneumatic cylinder and rotate, the shift head of shift fork moves the slide, the clamp splice through fixed connection on the slide is carried the object.

In the above-mentioned technique, the sliding plate is driven to move by the rotation angle of the shifting fork, and because the rotation angle of the shifting fork is limited, the opening range of the two clamping blocks is also smaller in this way, and when the size of the clamped object is slightly changed, the condition of inapplicability may occur, so a self-centering clamp is proposed to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a self-centering clamp which solves the problems in the prior art, can adjust a larger opening range and is more convenient for clamping objects with different sizes.

In order to achieve the above object, the present utility model provides the following solutions: the present utility model provides a self-centering fixture comprising:

the base plate is fixedly connected with the shell;

the clamping assembly comprises two moving plates and a motor, wherein the two moving plates and the motor are oppositely arranged, the motor is fixedly connected in the shell, the moving plates are located on the base plate, the moving plates are in sliding connection with the base plate, two sliding holes are formed in the base plate, the moving plates penetrate through the sliding holes and extend into the shell, the two moving plates are respectively connected with the motor in a driving mode, two first guide sliding rails are fixedly connected on the base plate, first grooves are formed in the moving plates, the first guide sliding rails are located in the first grooves, first arc clamping plates are fixedly connected on the moving plates, and the two first arc clamping plates are oppositely arranged.

Preferably, a sliding plate is fixedly connected to one side, away from the clamping plate, of the movable plate, the sliding plate is in sliding connection with the shell, and the two sliding plates are respectively in transmission connection with the motor.

Preferably, the sliding plate is fixedly connected with a rack, the output end of the motor is fixedly connected with a gear, and the two racks are respectively meshed with the gear.

Preferably, the shell inside wall fixedly connected with two second guide slide rails, the second recess has been seted up on the slide, the second guide slide rail is located in the second recess, the second guide slide rail with second recess sliding connection.

Preferably, two limiting blocks are fixedly connected in the shell, and the limiting blocks are positioned at the farthest stroke of the movable plate.

Preferably, the auxiliary clamp is fixedly connected to the substrate, the auxiliary clamp comprises two fixing plates, the two fixing plates are oppositely arranged on the substrate, the fixing plates are provided with threaded holes, threaded rods are connected with one end of each threaded rod in a rotating mode, the second arc clamping plates are oppositely arranged, and the threaded rods are far away from the rotating blocks fixedly connected with one end of each second arc clamping plate.

Preferably, the connecting block is fixedly connected with the second arc-shaped clamping plate, a connecting groove is formed in the connecting block, the threaded rod is fixedly connected with the connecting plate, the connecting plate is located in the connecting groove, a baffle ring is fixedly connected to the connecting groove, the threaded rod penetrates through the baffle ring, the connecting plate is in butt joint with the baffle ring, and the connecting plate is rotationally arranged in the connecting groove.

The utility model discloses the following technical effects: in this device, the object that treats the clamp is put in the position of two slide holes middles on the base plate, and the motor drives the movable plate and moves on first guide rail, until two first arc splint can clip the object, and the movable plate slides on first guide rail, makes the movable plate remove on fixed orbit, and first arc splint be indent arc, conveniently clip the object. The movable plate moves in the sliding hole, so that a larger moving distance can be generated, objects with different sizes can be conveniently clamped, and the device is more convenient to use.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the self-centering fixture of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 2;

1, a substrate; 2. a housing; 3. a moving plate; 4. a motor; 5. a slide hole; 6. a first guide rail; 7. a first arc splint; 8. a slide plate; 9. a rack; 10. a gear; 11. the second guide slide rail; 12. a limiting block; 13. a fixing plate; 14. a threaded rod; 15. a second arc splint; 16. a rotating block; 17. a connecting block; 18. a connecting plate; 19. a baffle ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1-3, the present utility model provides a self-centering fixture comprising:

the base plate 1, the base plate 1 is fixedly connected with the shell 2. An object to be clamped may be placed on the base plate 1.

The clamping assembly comprises two moving plates 3 and a motor 4 which are oppositely arranged, the motor 4 is fixedly connected in the shell 2, the moving plates 3 are located on the base plate 1, the moving plates 3 are in sliding connection with the base plate 1, two sliding holes 5 are formed in the base plate 1, the moving plates 3 penetrate through the sliding holes 5 to extend into the shell 2, the two moving plates 3 are respectively connected with the motor 4 in a transmission mode, two first guide sliding rails 6 are fixedly connected to the base plate 1, first grooves are formed in the moving plates 3, the first guide sliding rails 6 are located in the first grooves, first arc clamping plates 7 are fixedly connected to the moving plates 3, and the two first arc clamping plates 7 are oppositely arranged.

The motor 4 can have certain guard action to the motor 4 in the shell 2, and the movable plate 3 moves simultaneously under the drive of motor 4, and movable plate 3 slides on first guide rail 6, makes movable plate 3 remove on fixed orbit, and the centre gripping object of being convenient for, and when two movable plates 3 moved in opposite directions, two first arc splint 7 can be with the object centre gripping, and first arc splint 7 is indent arc, conveniently presss from both sides the object.

Further optimizing scheme, the movable plate 3 is kept away from splint one side fixedly connected with slide 8, slide 8 and shell 2 sliding connection, and two slide 8 are connected with motor 4 transmission respectively.

The motor 4 drives the two sliding plates 8 to move, and the sliding plates 8 drive the moving plate 3 to move.

In a further optimized scheme, racks 9 are fixedly connected to the sliding plate 8, a gear 10 is fixedly connected to the output end of the motor 4, and the two racks 9 are respectively meshed with the gear 10.

The motor 4 drives the gear 10 to rotate, the gear 10 drives the rack 9 to move, and the rack 9 drives the slide plate 8 to slide on the shell 2, so that the moving plate 3 is driven to move.

Further optimizing scheme, two second guide slide rail 11 of shell 2 inside wall fixedly connected with, offered the second recess on the slide 8, second guide slide rail 11 is located the second recess, second guide slide rail 11 and second recess sliding connection.

The sliding plate 8 is in sliding connection with the housing 2 through the cooperation of the second groove and the second guide rail 11.

According to a further optimization scheme, two limiting blocks 12 are fixedly connected in the shell 2, and the limiting blocks 12 are located at the farthest stroke of the movable plate 3.

The stopper 12 prevents the slide plate 8 from moving too far when moving to both sides, and prevents the rack 9 from being separated from the gear 10.

Further optimizing scheme, fixedly connected with auxiliary jig on the base plate 1, auxiliary jig include two fixed plates 13, and two fixed plates 13 subtend sets up on the base plate 1, and threaded hole has been seted up to fixed plate 13, and threaded hole internal rotation is connected with threaded rod 14, and threaded rod 14 one end rotates and is connected with second arc splint 15, and two second arc splint 15 subtend sets up, and threaded rod 14 is kept away from second arc splint 15 one end fixedly connected with rotatory piece 16.

The auxiliary clamp is mainly used for assisting, when an object is clamped by the first arc clamping plate 7, the rotating block 16 is rotated, the rotating block 16 drives the threaded rod 14 to rotate, and the threaded rod 14 is in threaded connection with the fixing plate 13, so that the second arc clamping plate 15 is pushed to move until the second arc clamping plate 15 is abutted against the object.

Further optimizing scheme, second arc splint 15 fixedly connected with connecting block 17, offered the spread groove on the connecting block 17, threaded rod 14 fixedly connected with connecting plate 18, connecting plate 18 are located the spread groove, fixedly connected with keeps off ring 19 on the spread groove, threaded rod 14 passes keeps off ring 19, connecting plate 18 and keeps off ring 19 butt, connecting plate 18 rotation setting in the spread groove.

When the threaded rod 14 rotates, the threaded rod 14 drives the connecting plate 18 to rotate in the connecting groove, and the blocking ring 19 can limit the connecting plate 18 in the connecting groove.

According to the application method of the device, an object to be clamped is placed at a position between two sliding holes 5 on a base plate 1, a motor 4 is started, the motor 4 drives a gear 10 to rotate, the gear 10 drives a rack 9 to move, the rack 9 drives a sliding plate 8 to slide on a shell 2, the sliding plate 8 drives a moving plate 3 to move in opposite directions until two first arc clamping plates 7 clamp the object, the moving plate 3 slides on a first guide sliding rail 6, the moving plate 3 moves on a fixed track so as to clamp the object conveniently, then a rotating block 16 is rotated, the rotating block 16 drives a threaded rod 14 to rotate, and the threaded rod 14 drives a second arc clamping plate 15 to move until the second arc clamping plate 15 is abutted against the object.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims

1. A self-centering fixture, comprising:

the device comprises a substrate (1), wherein the substrate (1) is fixedly connected with a shell (2);

the clamping assembly comprises two moving plates (3) and a motor (4) which are oppositely arranged, the motor (4) is fixedly connected in the shell (2), the moving plates (3) are located on the base plate (1), the moving plates (3) are slidably connected with the base plate (1), two sliding holes (5) are formed in the base plate (1), the moving plates (3) penetrate through the sliding holes (5) and extend into the shell (2), the two moving plates (3) are respectively connected with the motor (4) in a transmission mode, two first guide sliding rails (6) are fixedly connected to the base plate (1), first grooves are formed in the moving plates (3), the first guide sliding rails (6) are located in the first grooves, first arc clamping plates (7) are fixedly connected to the moving plates (3), and the two first arc clamping plates (7) are oppositely arranged.

2. The self-centering fixture of claim 1, wherein: and one side, far away from the first arc-shaped clamping plate (7), of the movable plate (3) is fixedly connected with a sliding plate (8), the sliding plate (8) is in sliding connection with the shell (2), and the two sliding plates (8) are respectively in transmission connection with the motor (4).

3. The self-centering fixture of claim 2, wherein: the sliding plate (8) is fixedly connected with a rack (9), the output end of the motor (4) is fixedly connected with a gear (10), and the two racks (9) are respectively meshed with the gear (10).

4. A self-centering fixture as claimed in claim 3, wherein: the novel sliding plate is characterized in that two second guide sliding rails (11) are fixedly connected to the inner side wall of the shell (2), a second groove is formed in the sliding plate (8), the second guide sliding rails (11) are located in the second groove, and the second guide sliding rails (11) are in sliding connection with the second groove.

5. The self-centering fixture of claim 2, wherein: two limiting blocks (12) are fixedly connected in the shell (2), and the limiting blocks (12) are located at the farthest travel position of the moving plate (3).

6. The self-centering fixture of claim 1, wherein: the utility model discloses a base plate, including base plate (1), fixedly connected with auxiliary clamp, auxiliary clamp includes two fixed plates (13), two fixed plate (13) subtend sets up on base plate (1), threaded hole has been seted up to fixed plate (13), threaded hole internal rotation is connected with threaded rod (14), threaded rod (14) one end rotates and is connected with second arc splint (15), two second arc splint (15) subtend sets up, threaded rod (14) are kept away from second arc splint (15) one end fixedly connected with rotary block (16).

7. The self-centering fixture of claim 6, wherein: the connecting device is characterized in that the second arc clamping plate (15) is fixedly connected with the connecting block (17), a connecting groove is formed in the connecting block (17), the threaded rod (14) is fixedly connected with the connecting plate (18), the connecting plate (18) is located in the connecting groove, the baffle ring (19) is fixedly connected to the connecting groove, the threaded rod (14) penetrates through the baffle ring (19), the connecting plate (18) is abutted to the baffle ring (19), and the connecting plate (18) is rotationally arranged in the connecting groove.