CN201483252U

CN201483252U - Work fixture

Info

Publication number: CN201483252U
Application number: CN2009201412554U
Authority: CN
Inventors: 严明
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2009-08-25
Filing date: 2009-08-25
Publication date: 2010-05-26
Anticipated expiration: 2019-08-25

Abstract

The utility model relates to a work fixture, which comprises a fixture body and a positioning piece and a clamping piece which are arranged on the fixture body, wherein one end of the clamping piece is a workpiece clamping end; the positioning piece is in positioning connection with the fixture body through a locking structure; and both ends of the positioning piece are respectively connected with an anti-clamping deformation component. Based on the lever principle, the workpiece clamping end and the locking structure are subjected to two balance forces simultaneously through a pull rod, so that the aim of preventing the fixture from clamping and deforming is achieved, and the positioning accuracy of workpieces is improved.

Description

Frock clamp

Technical field

The utility model relates to frock clamp, relates in particular to the frock clamp of the higher box parts processing of required precision.

Background technology

At present, frock clamp is not owing to have the anti-mechanism that clamps distortion, and anchor point easily produces displacement deformation owing to only be subjected to the effect of unidirectional clamping force.

For example, during the machining box-type part, need carry out the side surface of workpiece location and clamp, since structural reason, holder anchor point poor rigidity, and displacement deformation is very obvious; Thereby the workpiece positioning accuracy is poor, location of workpiece precision instability.This for the higher box parts of some required precision to add man-hour very disadvantageous.

The utility model content

The utility model is in order to overcome defective in the above-mentioned prior art, a kind of frock clamp that clamps distortion simple in structure, anti-to be provided.

A kind of frock clamp of the utility model comprises chuck body, is arranged at keeper and holder on the described chuck body, and an end of described holder is the piece-holder end, and described keeper and described chuck body are located by connecting by locking mechanism; Described keeper two ends are connected with the anti-deformed component that clamps respectively.

In technique scheme, described anti-clamping deformed component comprises: pull bar and clamping bar, described pull bar is vertically connected between described clamping bar and the described holder, and the length of described clamping bar is identical with the length of described holder, and two ends are respectively arranged with first support member and second support member; The other end of described holder is provided with the 3rd support member; Described second support member acts on the described locking mechanism; And described the 3rd support member is vertical with described keeper with the straight line that described first support member is linked to be, and the straight line that described second support member, described locking mechanism, described piece-holder end are linked to be is vertical with described keeper.

In technique scheme, the contact-making surface of described second support member and described locking mechanism is a sphere.

In technique scheme, described keeper is a strip.

In technique scheme, described first support member, described second support member, the 3rd support member are a nail.

The utility model utilizes lever principle, by pull bar, makes piece-holder end and locking mechanism be subjected to the effect of two equilibrant force simultaneously, reaches the purpose that prevents the clamp distortion, improves the positioning accuracy of workpiece.

Description of drawings

Fig. 1 is the perspective view of the utility model frock clamp embodiment;

Fig. 2 is the front view of the utility model frock clamp embodiment shown in Figure 1;

Fig. 3 is the vertical view of the utility model frock clamp embodiment shown in Figure 1;

Fig. 4 is among the utility model frock clamp embodiment, the anti-structural representation that clamps deformed component.

Mark the following drawings mark thereon in conjunction with the accompanying drawings:

The 1-chuck body; The 2-base plate; The 3-pneumatic cylinder; The 4-fastening screw; The 5-holder; 6-the 3rd support member; The 7-pull bar; The 8-hexagon nut with flange; 9-bottom surface locating piece; 10-bottom surface fastening screw; The 11-clamping bar; 12-first support member; 13-second support member; The 14-keeper; 15-piece-holder end; The 16-locking mechanism.

The specific embodiment

Below in conjunction with accompanying drawing, a specific embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of the specific embodiment.

The present embodiment frock clamp comprises chuck body 1, form pneumatic latch assembly, be arranged at the keeper 14 and the holder 5 of chuck body 1 by pneumatic cylinder 3 and fastening screw 4, keeper 14 is arranged on the side of chuck body 1, one end of holder 5 is a piece-holder end 15, and keeper 14 is located by connecting by locking mechanism 16 with chuck body 1; Keeper 14 two ends are connected with the anti-deformed component that clamps respectively.On the bottom surface of chuck body 1, also be provided with bottom surface locating piece 9 and bottom surface fastening screw 10.

Specifically, the anti-deformed component that clamps comprises: pull bar 7 and clamping bar 11, pull bar 7 are vertically connected between clamping bar 11 and the holder 5, and pull bar 7 is connected with holder 5 by hexagon nut with flange 8; The length of clamping bar 11 is identical with the length of holder 5, and two ends are respectively arranged with first support member 12 and second support member 13; The other end of holder 5 is provided with the 3rd support member 6; Second support member 13 acts on the locking mechanism 16; And the 3rd support member 6 is vertical with keeper 5 with the straight line that first support member 12 is linked to be, and the straight line that second support member 13, locking mechanism 16, piece-holder end 15 are linked to be is vertical with keeper 5.Second support member 13 is a sphere with the contact-making surface of locking mechanism 16.Keeper 14 is a strip.

In the clamping process of workpiece, at first manually plug bottom surface fastening screw 10, under the effect of pneumatic linear actuator 3, insert good fastening screw 4 then, manually tighten hexagon nut with flange 8 clamping work pieces on the pull bar 7 again.Because the 3rd support member 6 is corresponding with first support member 12, promptly pull bar 7 equates at the force position of clamping bar 11 arm of force to first support member 12 at the arm of force of force position to the three support members 6 of holder 5 and pull bar 7; The clamping point of holder 5 (being piece-holder end 15) is corresponding with second support member 13 of clamping bar 11, and promptly pull bar 7 equates at the force position of clamping bar 11 arm of force to second support member 13 to the arm of force of piece-holder end 15 and pull bar 7 at the force position of holder 5; Second support member, the 13 suffered active forces of piece-holder end 15 and clamping bar 11 just equate like this.Piece-holder end 15 suffered active forces are delivered to the side anchor point of workpiece by workpiece, be on the locking mechanism 16, second support member 13 also acts on the locking mechanism 16, locking mechanism 16 just is subjected to the effect of two equilibrant force like this, thereby prevent the side anchor point of workpiece, just locking mechanism 16 produces displacement deformation, reaches the anti-purpose that clamps distortion.

To sum up, in the utility model:

The utility model utilizes lever principle, by the pull bar transmission, makes clamping point and anchor point be subjected to the effect of two equilibrant force simultaneously, reaches the purpose that prevents the clamp distortion.Have simple in structure, can prevent clamp distortion, the advantage that positioning accuracy is high can be widely used in the mechanical manufacturing field, is particularly useful for the higher box parts processing of required precision that needs the side to clamp.

More than frock clamp provided by the utility model known clearly introduce in detail, used specific case herein the utility model set forth, the explanation of embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as the utility model.

Claims

1. a frock clamp comprises chuck body, is arranged at keeper and holder on the described chuck body, and an end of described holder is the piece-holder end, it is characterized in that, described keeper and described chuck body are located by connecting by locking mechanism; Described keeper two ends are connected with the anti-deformed component that clamps respectively.

2. frock clamp according to claim 1, it is characterized in that, described anti-clamping deformed component comprises: pull bar and clamping bar, described pull bar is vertically connected between described clamping bar and the described holder, the length of described clamping bar is identical with the length of described holder, and two ends are respectively arranged with first support member and second support member; The other end of described holder is provided with the 3rd support member; Described second support member acts on the described locking mechanism; And described the 3rd support member is vertical with described keeper with the straight line that described first support member is linked to be, and the straight line that described second support member, described locking mechanism, described piece-holder end are linked to be is vertical with described keeper.

3. frock clamp according to claim 2 is characterized in that, the contact-making surface of described second support member and described locking mechanism is a sphere.

4. frock clamp according to claim 2 is characterized in that, described keeper is a strip.

5. frock clamp according to claim 3 is characterized in that, described first support member, described second support member, the 3rd support member are a nail.