CN202684568U

CN202684568U - Integrated high-accuracy positioning and clamping fixture

Info

Publication number: CN202684568U
Application number: CN 201220362284
Authority: CN
Inventors: 杜彦明
Original assignee: CHONGQING DAJIANG MILLISON DIE-CASTING Co Ltd
Current assignee: CHONGQING DAJIANG MILLISON DIE-CASTING Co Ltd
Priority date: 2012-07-25
Filing date: 2012-07-25
Publication date: 2013-01-23
Anticipated expiration: 2022-07-25

Abstract

The utility model discloses an integrated high-accuracy positioning and clamping fixture, which comprises a fixture bottom plate for mounting a workpiece. Positioning pins for assembling the workpiece are arranged on the fixture bottom plate. The fixture is characterized in that positioning holes are formed in the fixture bottom plate, and pull rods on the middle parts of the positioning pins perpendicularly move in the positioning holes; each positioning pin consists of a pull rod inverted taper and an elastic element; a movable pushrod fixedly connected with each positioning pin is arranged at the lower end of the positioning pin; and a power device for driving the movable pushrods to move is arranged below the movable pushrods. According to the integrated high-accuracy positioning and clamping fixture, the positioning pins are improved, so that a gap at a joint of the workpiece and the fixture is eliminated; in addition, the pull rods on the middle parts of the positioning pins are driven by the movable pushrods to perpendicularly move to extend or reset the elastic elements on the positioning pins, thereby realizing accurate positioning and clamping; and such a working mode has the advantages of high positioning accuracy, uniform clamping force, compact structure, convenience for clamping and long service life of the fixture.

Description

Locate and clamp integrated high-accuracy clamp

Technical field

The utility model relates to a kind of anchor clamps, particularly locates and clamp integrated high-accuracy clamp.

Background technology

Anchor clamps have effects such as enhancing productivity, cut down finished cost, guarantee product quality and production safety in machine-building, become requisite instrument in the machine-building.Present employed anchor clamps generally are to adopt workpiece locating slot or the instruments such as alignment pin, pressing plate that workpiece is positioned and clamps.As shown in Figure 1, these anchor clamps comprise base plate 6, the pressing plate 8 that is provided with clamp supporting plate 7 and is L-type at base plate 6, pressing plate 8 places the both sides of clamp supporting plate 7, described clamp supporting plate 7 is provided with straight pin and the rhombus pin for the assembling workpiece, when the assembling workpiece, only need the locating hole on the workpiece 5 is aimed at straight pin and rhombus pin, again workpiece 5 is pressed on the clamp supporting plate 7, workpiece and clamp supporting plate 7 are close together, at last, pressing plate 8 is pressed in both sides and manual compression of workpiece 5, workpiece 5 is close to more.But the anchor clamps of this structure have following defective: owing to workpiece will be matched with straight pin and rhombus pin, therefore the locating hole on the workpiece can be slightly larger than the external diameter of straight pin and rhombus pin, this is just so that can produce position error when positioning workpieces, the machining accuracy of bad assurance product, the passing rate of processing of product is not high.

Summary of the invention

The purpose of this utility model be provide in order to solve above-mentioned the deficiencies in the prior art that a kind of positioning accuracy is high, the location of convenient mounting and clamping and clamp integrated high-accuracy clamp.

To achieve these goals, the location that the utility model is designed and clamp integrated high-accuracy clamp, comprise for the clamp bottom board that workpiece is installed, be provided with for the alignment pin that assembles workpiece at clamp bottom board, it is characterized in that clamp bottom board is provided with the locating hole that moves both vertically for the work of the pull bar in the middle of the alignment pin; Described alignment pin is comprised of pull bar back taper and flexible member; Be provided with the movable push bar that is fixedly connected with it in the lower end of alignment pin; Movable push bar has the power set that promote the movable push bar motion.

In order to provide power to movable push bar, power set comprise oil cylinder and the oil cylinder fixed head that is used for fixed oil cylinder.

For alignment pin and workpiece are closely cooperated, and workpiece is positioned and clamps, described flexible member is cylindric or taper, and flexible member is socketed in outside the pull bar back taper upper end, and the mating surface of pull bar back taper and flexible member is with tapering.

For alignment pin and workpiece are closely cooperated, and workpiece is positioned and clamps, described flexible member is cylindric, and flexible member places the middle part, upper surface of pull bar back taper, and to stretch out the pull bar back taper outer and match with workpiece at the two ends of flexible member.

The location that the utility model obtains and clamp integrated high-accuracy clamp, by the improvement to alignment pin, so that workpiece and anchor clamps junction gapless again, simultaneously, driving alignment pin by movable push bar moves both vertically, so that the flexible member on the alignment pin opens or return, to locate and clamp thereby realization is accurate, it is high that this working method has positioning accuracy, clamping force is even, compact conformation, convenient mounting and clamping, the advantage that the anchor clamps life-span is long.

Description of drawings

Fig. 1 is the assembling schematic diagram of existing anchor clamps;

Fig. 2 is the structural representation of locating and clamp integrated high-accuracy clamp among the embodiment;

Fig. 3 is the enlarged diagram of left side alignment pin among Fig. 2;

Fig. 4 is the enlarged diagram of the right chamfered edge alignment pin among Fig. 2;

Fig. 5 is the top view of Fig. 4;

Fig. 6 is anchor clamps among the embodiment and the assembling schematic diagram of workpiece.

Among the figure: clamp bottom board 1, locating hole 11, alignment pin 2, pull bar back taper 21, flexible member 22, movable push bar 3, power set 4, oil cylinder 41, oil cylinder fixed head 42, workpiece 5, base plate 6, clamp supporting plate 7, pressing plate 8.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment:

The location that the present embodiment provides and clamp integrated high-accuracy clamp, as shown in Figure 2, it comprises for the clamp bottom board 1 that workpiece 5 is installed, be provided with for two alignment pins 2 that assemble workpiece 5 at clamp bottom board 1, clamp bottom board 1 is provided with the locating hole 11 that moves both vertically for pull bars 21 works in the middle of two alignment pins 2; Described two alignment pins 2 are comprised of pull bar back taper 21 and the flexible member 22 that is socketed on the pull bar back taper 21, as shown in Figure 3, flexible member 22 in one of them alignment pin 2 is socketed in the outside of pull bar back taper 21, described flexible member 22 is cylindric, flexible member 22 also can be taper, the mating surface of above-mentioned pull bar back taper 21 and flexible member 22 is with tapering, such as Fig. 4, shown in Figure 5, flexible member 22 in another alignment pin 2 is cylindric, flexible member 22 is socketed in the outside of pull bar back taper 21, and to stretch out pull bar back taper 21 outer and match with workpiece 5 at the two ends of flexible member 22; Be provided with the movable push bar 3 that is fixedly connected with it in the lower end of alignment pin 2; Movable push bar 3 has the power set 4 that promote movable push bar 3 motions, and described power set 4 comprise oil cylinder 41 and the oil cylinder fixed head 42 that is used for fixed oil cylinder 41.

When assembling, only need two installing holes on the workpiece 5 are aimed at two alignment pins 2, then firmly workpiece 5 is compressed, make it with anchor clamps on clamp bottom board 1 be close to, as shown in Figure 6, then automatically controlling oil cylinder 41 by button spurs simultaneously the movable push bar 3 that is fixedly connected with alignment pin 2 and moves down, at this moment because flexible member 22 has telescopicing performance, flexible member can be under the promotion of pull bar back taper 21 spreading, thereby fit tightly with workpiece 5, realize the purpose of location and clamping work pieces.After the processing of finishing workpiece 5, again start oil cylinder 41 and upwards promote movable push bar 3 and move upward, at this moment, flexible member 22 resets and shrinks and decontrol workpiece 5, and then can take off workpiece 5 from anchor clamps, and is convenient and swift.

Need to prove at last, above embodiment is only in order to the technical solution of the utility model to be described but not the restriction technologies scheme, although the applicant has been described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, those are made amendment to the technical solution of the utility model or are equal to replacement, and do not break away from aim and the scope of the technical program, all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. locate and clamp integrated high-accuracy clamp for one kind, it comprises for the clamp bottom board (1) that workpiece (5) is installed, be provided with for the alignment pin (2) that assembles workpiece (5) at clamp bottom board (1), it is characterized in that clamp bottom board (1) is provided with the locating hole (11) that moves both vertically for the work of the pull bar (21) in the alignment pin (2); Described alignment pin (2) is comprised of pull bar back taper (21) and the flexible member (22) with tapering; Be provided with the movable push bar (3) that is fixedly connected with it in the lower end of alignment pin (2); Movable push bar (3) has the power set (4) that promote movable push bar (3) motion.

2. location according to claim 1 and clamp integrated high-accuracy clamp is characterized in that power set (4) comprise oil cylinder (41) and the oil cylinder fixed head (42) that is used for fixed oil cylinder (41).

3. location according to claim 1 and 2 and clamp integrated high-accuracy clamp, it is characterized in that described flexible member (22) is cylindric or taper, flexible member (22) is socketed in outside the pull bar back taper (21), and the mating surface of pull bar back taper (21) and flexible member (22) is with tapering.

4. location according to claim 1 and 2 and clamp integrated high-accuracy clamp, it is characterized in that described flexible member (22) is for cylindric, flexible member (22) is socketed in outside the pull bar back taper (21), and to stretch out pull bar back taper (21) outer and match with workpiece (5) at the two ends of flexible member (22).