CN101116941A

CN101116941A - Clamping tool for machine work

Info

Publication number: CN101116941A
Application number: CNA2006100408868A
Authority: CN
Inventors: 孙爱平
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-02
Filing date: 2006-08-02
Publication date: 2008-02-06

Abstract

The invention discloses a clamping tool for holding a shaft type part in keyway processing, the invention adopts a square frame as a clamping tool body, the four sides of the square frame are provided with a fixing plate which can be used as the positioning benchmark, a clamping head is two V-shaped blocks and arranged inside the square frame, which is flexibly connected with a guiding rail on the two side frames of the square frame through a V-shaped groove at the two ends; the upper side and the down side of the square frame are respectively provided with a pair of countersunk head screw holes and a set of bolt matching with the countersunk head screw holes to load force on the clamping head; the invention only needs to be overturned by 90 DEG C or 180 DEG C for the next keyway to be processed after a workpiece is processed for one time in positioning manner, so the invention has the advantages of an easy rotation, an accurate positioning and being capable of processing a long shaft type workpiece.

Description

A kind of clamping tool for machine work

Technical field

The invention belongs to a kind of clamping tool for machine work, particularly a kind of rut spare anchor clamps especially are suitable for vertical knee-type milling machine carries out processing such as keyway to axle class part anchor clamps.

Prior art

On lathes such as milling machine, various axle class parts are carried out keyway processing (comprising the processing of rectangle flower ingot axle) at present, generally all adopt dividing head or flat-nose pliers as clamping device.Though adopt dividing head to have the convenient advantage such as accurate of angle adjustment, because its method of clamping is that the other end must withstand with thimble, so the length of workpiece is subjected to certain limitation, particularly is difficult to process for long-axle workpieces; And adopt the flat-nose pliers clamping, in that to be used for processing vertical mutually. need first setting-out during multikeyways such as symmetry, in process, also need carry out the centering debugging, therefore exist both time-consuming, efficient is low, is difficult to the disadvantage of ensuring the quality of products again.

Goal of the invention

The objective of the invention is: design and a kind ofly be mainly used in that axle class part is carried out 180 ° of symmetrical keyways, 90 ° of vertical keyways and keyway head number is the anchor clamps that 2～4 workpiece is processed.To reach accurate positioning. the purpose that makes things convenient for and can carry out processing than farm labourer's part.

Technical scheme

Solution of the present invention is: the body of anchor clamps adopts four limits all to have fixed head and all can be used as the square frame body of locating surface, and chuck is two V-blocks being located in the framework, two frames up and down at the square frame body respectively are provided with the cover dormant bolt that a pair of dormant bolt hole reaches cooperation with it, respectively there is a V-arrangement to lead to roll the V-block two ends of pretty build that one v shape groove is respectively arranged at framework two inner side edges, and flexibly connect and can relatively move by the V-way on this V-shaped groove and framework two inner side edges, to form chuck; Whole anchor clamps then are connected with workbench by arbitrary fixed head of being located at framework four limits, and by sunk screw chuck are imposed chucking power.As two V-blocks of chuck, the back side of a Y type piece is provided with two screws therein, overlaps dormant bolt by one of different length itself and frame are flexibly connected, and both has been convenient to clamping workpiece, can reduce the reserve level of bolt again.It is some right that dormant bolt one cover is divided into, the distance that its logarithm press the chuck opening and closing calmly, generally to establish a pair of being advisable about every interval 5mm, controlling die opening certainly, to be up to the aperture minimum be a hydrogen

Beneficial effect

Advantage of the present invention is: owing to adopt four limits all to can be used as the square frame body of location benchmark as chuck body, therefore, add man-hour at the workpiece that axle class part is carried out 180 ° of symmetries or 90 ° of vertical keyways, after having one-time positioning processing, only need anchor clamps can be carried out these anchor clamps of processing of next keyway owing to need not withstand centre bore when the holding workpiece together with 180 ° or 90 ° of workpiece upsets, but the scope that has enlarged processing work again therefore, after this invention had clamping, rotational angle was convenient. accurately and can carry out the characteristics such as processing of long axis workpiece.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the A-A view of accompanying drawing 1 Fig. 1.

1 is the anchor clamps frameworks among the figure, the 2nd, and fixed head, the 3rd, upper grip, the 4th, dormant bolt, the 5th, the side frame of band v shape guide rail, the 6th, lower chuck, the 7th, screw, the 8th, bayonet socket.

Embodiment

Present embodiment is applicable to the processing diameter anchor clamps that axle class part uses in Φ 25～135mm scope, two pairs in present embodiment one cover, and its structure, size are all identical.Wherein:

Each length of side of framework (1) is 250mm, the V-way tapering on the dual-side 5 be 27 ° 30 ', fixed head 2 (long * wide * thick) is 115 * 60 * 5mm, totally four, be symmetrically welded middle part respectively in four edges, the fastener hole of two Φ 12.3mm is respectively bored on both sides; Two countersunk head screws that cooperate with dormant bolt 4 on upper and lower frame are symmetrical arranged, and centre-to-centre spacing is 120mm, and counterbore is a cylindricality, screwhole diameter M8, and counter bore hole diameters is Φ 18mm, dark 15mm; Framework adopts weldering to form integral body, match grinding after heat treatment, the opposite side depth of parallelism is 0.02mm, the perpendicularity on adjacent both sides is 0.03mm, the tapering of upper grip (3), lower chuck (6) two ends dovetail groove also adopt 27 ° 30 ', the wide 30mm of opening part, be slidingly matched with the guide rail on the dual-side (2) of framework (1): bayonet socket (8) adopts the V-arrangement bayonet socket, the wide 34mm of oral area, 27 ° 30 of tapering ' respectively buckle corresponding to the position of the countersunk head screw screw (7) of M8 in the bottom of lower chuck (6), this screw is a blind hole, dark 15mm; Each dormant bolt (4) diameter is M8, and length is 40～115mm, and per two is a pair of, and length difference 5mm between the two adjacent groups adopts the 35# steel, and modifier treatment is to HRc22～27.Select for use corresponding during use in the face of bolt (upper and lower each-to) according to be processed diameter; When selecting fixed head (2) that it is fastened on the workbench next keyway of processing after the clamping that anchor clamps are fastening with workbench again together with 90 ° of workpiece upsets or 180 °; Get final product work.

Claims

1. clamping tool for machine work, comprise chuck body and chuck, it is characterized in that this chuck body is that four limits all have fixed head and all can be used as the square frame body of locating surface, and chuck is two vee-blocks being located in the framework: respectively be provided with-the dormant bolt hole is reached a cover dormant bolt that cooperates with it up and down on two flies at the square frame body, at framework two inner side edges one V-way is arranged respectively: respectively there is a V-shaped groove at the V-block two ends as chuck, and flexibly connect and can relatively move by the Y shape guide rail on this V-shaped groove and framework two inner side edges, to form chuck; Whole anchor clamps are then decided plate by arbitrary picture of being located at framework four limits and are closed with work and be connected, and face imposes chucking power by dormant bolt to chuck.

2. press the described clamping tool for machine work of claim 1, two V-blocks of Qi feature Shi Xiao chuck, the back side of a V-block is provided with two screws therein, and forces a cover dormant bolt of different length that itself and framework are flexibly connected.

3. by claim 1 and 2 described machining fixtures, it is some right to it is characterized in that dormant bolt-cover is divided into, and the distance that its logarithm press the chuck folding calmly, and is generally a pair of to establish about every interval 5mm, and to be up to the aperture minimum be a cover from controlling die opening.