CN201023136Y

CN201023136Y - Centre

Info

Publication number: CN201023136Y
Application number: CNU2007201064951U
Authority: CN
Inventors: 李益
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-12
Filing date: 2007-02-12
Publication date: 2008-02-20
Anticipated expiration: 2017-02-12

Abstract

The utility model relates to a centre which comprises a body. An axial through hole is arranged on the body, and a sliding centre is arranged in the through hole. A key groove is arranged on the side portion of the sliding centre, and a locating hole with a locating screw inside is processed on the body. A pocking claw sheath is connected with the front end of the body, and a centre connecting sheath is arranged on the tail portion of the sliding centre. A spring is connected with the centre connecting sheath, and a nut restricts the spring, the centre connecting sheath, and the sliding centre inside the axial through hole. The utility model has the advantages of simple structure, convenient processing and fixing, and greatly improved working efficiency of work-pieces, and can process a full-length work-piece in one time.

Description

A kind of top

Technical field

The utility model relates to machine tool accessories, specifically is that a kind of lathe gear-hobbing machine that is used for the working shaft-like part is stirred top.

Background technology

Use at present the machine tooling shaft-like workpiece, one end of workpiece is fixed on the chuck, the other end aligns fixing with centre bore with thimble on the lathe, because of chuck by the cylindrical clamping, so a part of size that is held can not be processed, this fixed form can not disposablely be finished the processing of excircle of workpiece, and the mode of chuck clamping simultaneously is difficult to guarantee the concentricity of each size of workpiece, with can not process the workpiece total length by a clamping, and clamping efficient is low.

The utility model content

The utility model provides stirring of a kind of brand new top in order to overcome defective of the prior art, and concrete structure is simple, fixed processing is convenient, can improve the working (machining) efficiency of workpiece greatly, can disposablely process the workpiece total length.

The utility model is achieved in that

A kind of top body that comprises, it is characterized in that: on body, be provided with an axially extending bore, top being arranged in the through hole of sliding, top sidepiece is provided with a keyway sliding, on body, have a locating hole, set the position screw in the hole, set screw makes to slide and toply can only move in the keyway guide range and can not rotate, there is a pusher dog to be socketed in the front end of body, top afterbody is provided with top adapter sleeve sliding, top adapter sleeve is right after a spring, has a nut to be limited on the axial a certain position spring, center sleeve and slip are top at last.

Be provided with a fixed station on described body, pusher dog is fixed on the fixed station by nut.

Described pusher dog is made up of corpus unguis and pawl point, and the pawl point is made by hard metal, and is embedded on the corpus unguis.

Through hole top on the described body is less, and the bottom is big slightly, through hole top can just be ccontaining rolling center down, top adapter sleeve, spring and nut then can just be contained in the bottom of through hole.

When using, the utility model is fixed on the machine tool chief axis top, and with the centre bore of processing work to the top center-aligned of sliding, by external force tailstock centre is moved to major axes orientation then, promote workpiece and make rolling center toward axially being retracted on a certain position, at this moment workpiece end face is blocked by the pusher dog flank of tooth, just processing work can have been begun then, whole fixing operation is very convenient, guaranteed radial accuracy with the centre bore location, the pawl point that pusher dog of the present utility model has in addition adopted hard metal to make is embedded in that pawl puts, good toughness and hardness height, generally can skidding not take place adding to cause man-hour between pusher dog and the workpiece, guaranteed the reliability of work.

Description of drawings

Fig. 1, structural representation of the present utility model;

Fig. 2, perspective exploded view of the present utility model.

The specific embodiment

A kind of top body 1 that comprises, on body 1, be provided with an axially extending bore 11, the less bottom, aperture on described through hole 11 tops is big slightly, the top 2 just logical tops that are contained in through hole 11 of sliding, top 1 sidepiece is provided with a keyway 21 sliding, on body 1, have a dowel hole 12, set position screw 13 in the hole, set screw 13 location slide top 2, afterbody in slip top 2 is provided with a top adapter sleeve 3, top adapter sleeve 3 is right after a spring 4, a nut 5 is arranged at last with spring 4, top adapter sleeve 3 and top 2 bottoms that are fixed on through hole 11 of sliding; Be provided with a fixed station 14 on body 1, have a pusher dog 6 to be socketed in the front end of body 1, pusher dog 6 is fixed on the fixed station 14 by nut, and described pusher dog 6 is made up of corpus unguis 61 and pawl point 62, and pawl point 62 is made by hard metal, and is embedded on the corpus unguis 61.

At first the end face central aperture of processing work is slided when using top 2 center of the utility model, to slide then and top 2 in the through hole 11 of bodies 1, press, top 2 indentations of sliding make workpiece end face to contact with pusher dog 6, after workpiece fixes, the pawl point 62 of pusher dog 6 pricks workpiece end face, the pawl point 62 that has adopted hard metal to make because of pusher dog 6 of the present utility model is embedded on the corpus unguis 61, grab that pull out force is very strong generally can skidding not to take place adding to cause man-hour between pusher dog and the workpiece, guaranteed the reliability of work, adopt that this top operation is very easy to workpiece fixing whole fixing, the disposable processing of finishing excircle of workpiece of energy, the working method that top 11 centres of location of sliding, pusher dog 6 drive workpiece guarantees the concentricity of each size of workpiece.

Claims

1. top body that comprises, it is characterized in that: on body, be provided with an axially extending bore, top being arranged in the through hole of sliding, be provided with a keyway at the top sidepiece that slides, on body, have a locating hole, set the position screw in the hole, there is a pusher dog to be socketed in the front end of body, be provided with top adapter sleeve at the top afterbody that slides, top adapter sleeve is right after a spring, has a nut to be limited in the axial through hole spring, center sleeve and slip are top at last.

2. as claimed in claim 1 a kind of top, it is characterized in that: be provided with a fixed station on described body, pusher dog is fixed on the fixed station by nut.

3. as claimed in claim 1 a kind of top, it is characterized in that: described pusher dog is made up of corpus unguis and pawl point, and the pawl point is made by hard metal, and is embedded on the corpus unguis.

4. as claimed in claim 1 a kind of top, it is characterized in that: the through hole top on the described body is less, and the bottom is big slightly, through hole top can just be ccontaining rolling center down, top adapter sleeve, spring and nut then can just be contained in the bottom of through hole.