CN203649998U

CN203649998U - Clamp

Info

Publication number: CN203649998U
Application number: CN201320769345.4U
Authority: CN
Inventors: 杨庆德; 覃晓宇
Original assignee: Guangdong Liansu Technology Industrial Co Ltd
Current assignee: Guangdong Liansu Technology Industrial Co Ltd
Priority date: 2013-11-30
Filing date: 2013-11-30
Publication date: 2014-06-18
Anticipated expiration: 2023-11-30

Abstract

The utility model discloses a clamp which comprises clamping pieces and a rotating piece. The clamping pieces are installed on the rotating piece, the clamping pieces are installed on the rotating piece through a connector, the connector comprises a plurality of moving blocks and a mandrel, the clamping pieces are installed on the moving blocks arranged circumferentially, the end, close to the clamping pieces, of the mandrel is a tapered face, and the center position which the moving blocks surround can move. A workpiece can be clamped through the clamping pieces on the clamp, the rotating piece can drive the workpiece to rotate, the clamping pieces are installed on the rotating piece, and the functions of clamping and rotating can be achieved. During clamping, what is needed is to push the mandrel simply, the moving blocks are squeezed open through the tapered face of the mandrel, then the clamping pieces are driven to be opened, and the workpiece can be easily and conveniently placed. When no force is exerted on the mandrel, the moving blocks are collected around the center position of a circumference, and the workpiece can be clamped. The clamp is simple in structure and convenient to machine.

Description

A kind of fixture

Technical field

The utility model relates to clamping structure field, more specifically, relate to a kind of can drive workpiece rotate again can clamping work pieces fixture.

Background technology

The at present fixture of home and abroad clamping workpiece, has be fixedly fixed on workbench but can not rotate with workpiece, or can be with workpiece to rotate but structure is more complicated.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model proposes one can not only clamping work pieces, and the fixture that can drive workpiece to rotate, and this clamp structure is simple, can be that the processing of some parts be provided convenience.

To achieve these goals, the technical solution of the utility model is:

A kind of fixture, comprise clamping element and tumbler, clamping element is arranged on tumbler, clamping element is arranged on tumbler by connector, described connector comprises multiple movable blocks and mandrel, and described clamping element is arranged on movable block, and multiple movable blocks are circumference, one end that mandrel approaches clamping element is the conical surface, and removable in multiple movable blocks center.

Adopt the clamping element on this fixture can clamping work pieces, tumbler drives workpiece to rotate, and clamping element is arranged on tumbler to the function that realization can clamp and can rotate.In the time clamping, only need to simply shift mandrel onto, squeeze movable block by the conical surface of mandrel, thereby drive clamping element to open, easy place work piece; In the time mandrel not being done to power, movable block draws in along circle center position, realizes the fixture of workpiece.

Preferably, described tumbler comprises plane bearing, gear and rotation seat, rotation seat comprises end plate and through hole post, through hole post is arranged on end plate, on end plate, offer the hole being communicated with through hole, described rotation seat is arranged on plane bearing by through hole post is rotatable, and geared sleeve is connected on through hole post, and described movable block is laid on the end plate of rotation seat;

Described connector also comprises the push rod that runs through plane bearing and rotation seat, and mandrel is laid in push rod upper surface; Described mandrel contacts one end for shoulder axle with push rod;

The pore radius of described through hole post is greater than the radius of takeing on axle; In through hole post, distance end plate d1 place is provided with boss, and the distance of shoulder axle and end plate is greater than d1, and the radius of boss is greater than the radius of mandrel and is less than the radius of takeing on axle, d1 >=0.

Push rod runs through tumbler, by the push rod application of force, makes mandrel Compressive activities piece, reaches the effect of clamping work pieces; Gear rotates, and drives rotation seat to rotate, thereby drives movable block to rotate, and makes workpiece follow rotation; Cylindrical hole inner convex platform is along several salient points on whole cylindrical hole convex in cross-section or cross section, for stopping that mandrel departs from completely in the time being ejected by push rod.

In the specific implementation, in through hole post, can also exist one section of cylindrical radius to be greater than the radius of takeing on axle, the radius of remainder is greater than the radius of mandrel, and this mode has guaranteed that mandrel can be movable freely in the through hole post of rotation seat, and its scope of activities can not exceed rotation seat.The height that radius is greater than the cylinder of takeing on axle is more than or equal to the thickness of portable plate, and is more than or equal to the height of the mandrel conical surface, guarantees the activity space of mandrel.

Preferably, between described shoulder axle and boss, be also provided with spring I, spring I can make mandrel rotate and be returned to original state.

Preferably, be also fixed with baffle plate in the surrounding of described end plate, be also provided with spring II between described baffle plate and movable block, spring II can make movable block reset.

Compared with prior art, the beneficial effects of the utility model are: be one can clamping work pieces, and the fixture simple in structure that can drive again workpiece to rotate.

Accompanying drawing explanation

Fig. 1 is front view of the present utility model.

Fig. 2 is the cutaway view at figure A-A place.

Fig. 3 is the zoomed-in view at I place in Fig. 2.

Fig. 4 is stereogram of the present utility model.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described, but embodiment of the present utility model is not limited to this.

1-push rod, 2-plane bearing, 3-gear, 4-movable block, 5-pawl, 6-workpiece, 7-spring I, 8-mandrel, 9-spring II, 10-end plate, 11-through hole post.

Embodiment mono-

As shown in Figure 1, 2, 3, a kind of fixture, comprise clamping element and tumbler, clamping element is arranged on tumbler, and clamping element is arranged on tumbler by connector, connector comprises multiple movable blocks 4 and mandrel 8, clamping element is arranged on movable block 4, and multiple movable blocks 4 are circumference, and one end that mandrel 8 approaches clamping element is the conical surface, and be removable in multiple movable blocks 4 centers, clamping element is pawl 5 in the present embodiment.

In the present embodiment, tumbler comprises push rod 1, plane bearing 2, gear 3 and rotation seat, rotation seat comprises end plate 10 and through hole post 11, through hole post 11 is arranged on end plate 10, on end plate 10, offer the hole being communicated with through hole, rotation seat is arranged on plane bearing 2 by through hole post 11 is rotatable, and gear 3 is socketed on through hole post 11, and push rod 1 runs through plane bearing 2 and rotation seat; Movable block 4 is laid on the end plate 10 of rotation seat; Mandrel 8 is laid in push rod 1 upper surface, and mandrel 8 contacts one end for shoulder axle with push rod 1;

The pore radius of through hole post 11 is greater than the radius of takeing on axle; Through hole post 11 is interior is provided with boss apart from end plate d1 place, and the distance of shoulder axle and end plate 10 is greater than d1, and the radius of boss is greater than the radius of mandrel and is less than the radius of takeing on axle, d1 >=0.More specifically, be also fixed with baffle plate in the surrounding of end plate 10, be also provided with spring II 9 between baffle plate and movable block, spring II 9 can make movable block 4 reset.

Its detailed process is:

Workpiece 6 step up: the bar 1 that bears down on one, thus then push rod 1 promote mandrel 8 promote movable blocks 4 and drive pawl 5 on movable block 4 outwards motion workpiece 6 is clamped, mandrel 8 relies on gravity to move downward reset, movable block 4 relies on spring II 9 to promote to reset;

Workpiece 6 rotates: owing to there being plane bearing 2, so in the time of 3 transmission of rotating band moving gear, the workpiece 6 that pawl 5 clips and then rotates, and does not affect the fixing of fixture.

Embodiment bis-

On the basis of embodiment mono-, between shoulder axle and boss, be provided with spring I 7, spring I 7 can make mandrel rotate and be returned to original state.

Its detailed process is:

Workpiece 6 step up: the bar 1 that bears down on one, thus then push rod 1 promote mandrel 8 promote movable blocks 4 and drive pawl 5 on movable block 4 outwards motion workpiece 6 is clamped, mandrel 8 resets and relies on spring I 7 to reset, movable block 4 relies on spring II 9 to promote to reset;

Above-described embodiment of the present utility model, does not form the restriction to the utility model protection domain.Any modification of having done within spiritual principles of the present utility model, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present utility model.

Claims

1. a fixture, comprise clamping element and tumbler, clamping element is arranged on tumbler, it is characterized in that, clamping element is arranged on tumbler by connector, and described connector comprises multiple movable blocks and mandrel, described clamping element is arranged on movable block, multiple movable blocks are circumference, and one end that mandrel approaches clamping element is the conical surface, and multiple movable blocks around center removable.

2. fixture according to claim 1, it is characterized in that, described tumbler comprises plane bearing, gear and rotation seat, rotation seat comprises end plate and through hole post, through hole post is arranged on end plate, offers the hole being communicated with through hole on end plate, and described rotation seat is arranged on plane bearing by through hole post is rotatable, geared sleeve is connected on through hole post, and described movable block is laid on the end plate of rotation seat;

Described connector also includes the push rod that runs through plane bearing and rotation seat, and mandrel is arranged on push rod upper surface, and described mandrel contacts one end for shoulder axle with push rod;

3. fixture according to claim 2, is characterized in that, between described shoulder axle and boss, is also provided with spring I.

4. fixture according to claim 3, is characterized in that, is also fixed with baffle plate in the surrounding of described end plate, is also provided with spring II between described baffle plate and movable block.