CN201326619Y

CN201326619Y - Axle sleeve type inner fixed collet chuck

Info

Publication number: CN201326619Y
Application number: CNU2008201532208U
Authority: CN
Inventors: 王春兰; 赵正龙
Original assignee: Shanghai Micro Electronics Equipment Co Ltd
Current assignee: Shanghai Micro Electronics Equipment Co Ltd
Priority date: 2008-09-18
Filing date: 2008-09-18
Publication date: 2009-10-14
Anticipated expiration: 2018-09-18

Abstract

The utility model provides an axle sleeve type inner fixed collet chuck with repeated high-precision positioning and rapid and convenient assembly. The axle sleeve type inner fixed collet chuck comprises an expansion inserting pin, an expansion screw, a collet chuck and a thin-wall pipe fitting; the axle sleeve type inner fixed collet chuck is characterized in that the collet chuck is tubular and embedded in the thin-wall pipe fitting; and the expansion inserting pin is of a long column shape, a cylindrical positioning reference surface is arranged at one end of the expansion inserting pin, internal threads are formed at the other end of the expansion inserting pin and connected with the expansion screw, and the expansion inserting pin penetrates the tubular collet chuck and is fixedly connected with the collet chuck. The utility model has the characteristics of simple structure, uniform stress, firm axial fixation and convenient and rapid assembly and disassembly.

Description

Axle sleeve type internal fixation collet chuck

Technical field

The utility model relates to a kind of axle sleeve class retaining element, relates in particular to a kind of axle sleeve type internal fixation collet chuck.

Background technique

In present machine-building and the making of machinery part, the relative position of axle sleeve class part is fixed, and generally adopts positioning shaft or positioning device to carry out axially locating, and fastening by screw.This method is easy to implement, and realizes easily, but has the low problem of Location accuracy during resetting, is not suitable for using on high-precision resetting part.The expansion-fastening type coupling mechanism that can also use similar Chinese patent CN200620102277.6 to announce in addition, utilize the swelling that closely cooperates of the swelling cover conical surface and the axle hole conical surface, carry out axial restraint, this structure is owing to the frictional force between two parts is very big, when dismounting, need special extracting tool, increased fringe cost so virtually, and because the unbalance stress of its swelling, and be not suitable for high-precision thin-wall pipe (wall thickness is less than 3mm).

Press for a kind of highi degree of accuracy like this, but the axle sleeve fixed structure of resetting, and need not additional means, be convenient to fast quick-detach.

The model utility content

Technical purpose of the present utility model is to provide a kind of can repeat high-precision location, and loads and unloads the part of axle sleeve type fixed structure fast and easily.

A kind of axle sleeve type axial restraint collet chuck described in the utility model comprises expansion latch, expansive screw, collet chuck, thin-wall pipe; It is characterized in that described collet chuck is a tubulose, is nested in the thin-wall pipe; Described expansion latch is a long column shape, and an end is cylindrical locating basis face, and the other end is provided with internal thread and connects expansive screw, and the expansion latch passes the tubulose collet chuck, and is connected and fixed with collet chuck.

The expansion latch is the basis of whole axle sleeve type axial restraint collet chuck, the cylindrical locating basis face of its end is provided with some screws, reference for installation by the screw total, intermediate section is provided with a male cone (strobilus masculinus), the other end is provided with internal thread and connects expansive screw, also be provided with keyway on its cylinder, dive key in keyway, plays guiding and directing effect by screw.The collet chuck two ends are provided with inner conical surface, and alternately have groove, and the inner conical surface of corresponding expansion latch one end has the keyway that is complementary with dive key, can guide location expansion latch, make it pass collet chuck and fixedly the time, avoid rotation, mobile.Be provided with a male cone (strobilus masculinus) on the bar head of expansive screw equally, the angle of above-mentioned 4 conical surfaces is identical, and when installing and fixing like this, the inner conical surface at tubulose collet chuck two ends can be matched with the male cone (strobilus masculinus) of expansion latch and expansive screw respectively.

Collet chuck is nested in the thin-wall pipe, both leave the gap between the surface of contact, when the expansion latch passes collet chuck, and be connected and fixed, when the other end screws with expansive screw, axial displacement between the two will make both male cone (strobilus masculinus)s oppress the inner conical surface at collet chuck two ends, thereby force collet chuck outwards to dilate deformation equably, and the deformation of its generation will make fixedly thin-wall pipe of collet chuck swelling.When unclamping expansive screw, the swelling deformation of its compressing disappears, and restores gap state between thin-wall pipe and the collet chuck, just can realize dismantling easily.

Axle sleeve type internal fixation collet chuck described in the utility model, it is simple in structure, and is fixing stressed even, but has the highi degree of accuracy resetting, and axial restraint is firm, and easy installation and removal is characteristics fast.

Description of drawings

Fig. 1 is the perspective exploded view of axle sleeve type internal fixation collet chuck described in the utility model;

Fig. 2 is the structure sectional view of axle sleeve type internal fixation collet chuck described in the utility model;

Fig. 3 is the structure plan view of axle sleeve type internal fixation collet chuck described in the utility model.

Embodiment

Below in conjunction with Figure of description a specific embodiment of the present utility model is elaborated.

As shown in Figure 1, axle sleeve type internal fixation collet chuck described in the utility model, its structure comprises: expansion latch 1, collet chuck 2, thin-wall pipe 3, expansive screw 4.

Expansion latch 1 one ends are cylndrical surface, it is the locating basis face, intermediate section has one 15 ° male cone (strobilus masculinus), the other end is an internal thread, also be provided with keyway on the cylinder, hexagon socket cap head screw 11 is used for fixing expansion latch 1, and hexagon socket cap head screw 13 is used for dive key 12 is fixed on the keyway of expansion latch 1, and the latch that play the guiding role and prevent to expand rotates in collet chuck 2; The two ends of collet chuck 2 alternately have groove, and quantity is equal, is evenly distributed, and the inner conical surface of the corresponding expansion latch of collet chuck 1 one ends has the keyway that is complementary with dive key, and both agrees with when being convenient to install.

As shown in Figure 2, mounted configuration sectional view for axle sleeve type internal fixation collet chuck described in the utility model, wherein collet chuck 2 one ends are provided with 15 ° inner conical surface and are matched with on 15 ° of male cone (strobilus masculinus)s of expansion latch 1, and its other end also is provided with one 15 ° inner conical surface and is matched with on 15 ° of male cone (strobilus masculinus)s of expansive screw 4; The gap that 0.05-0.1mm is arranged between thin-wall pipe 3 and the collet chuck 2.Feather key 12 is fixed on the expansion latch by hexagon socket cap head screw 13, and agrees with the keyway of collet chuck 2 one end inner conical surfaces, and the latch 1 that expands this moment can't rotate in collet chuck 2.

The female end of expansion latch connects expansive screw 4, when screwing up with a wrench expansive screw 4, expansive screw 4 produces axial tension force, make the inner conical surface at two ends of male cone (strobilus masculinus) compressing collet chuck 2 of the male cone (strobilus masculinus) of expansive screw 4 and expansion latch 1 expand outwardly homogeneous deformation, because the angle of inclination of all conical surfaces is identical, be 15 °, the two ends of collet chuck 2 are stressed identical, the outside expansion tension force that homogeneous deformation produces is fixed on thin-wall pipe 3 swellings on the collet chuck 2, guarantees that like this coaxality requirement and the repetitive positioning accuracy between expansion latch 1 and the thin-wall pipe 3 requires the 0.02mm less than φ; Unscrew head expansive screw 4, eliminate axial tension force and make collet chuck 2 return back to non-swelling state, promptly return back to the gap state of original 0.05-0.1mm between thin-wall pipe 3 and the collet chuck 2, this moment, thin-wall pipe 3 just can remove very easily.

As shown in Figure 3, at the cylndrical surface of expansion latch 1 end, as the locating basis face, from plan view, its circle footpath is greater than thin-wall pipe, and circumference is provided with 3 equally distributed screws, available hexagonal fillister head screw 11 fixed expansion latches 1.

That more than introduces only is based on a preferred embodiment of the present utility model, can not limit scope of the present utility model with this.Any mechanism of the present utility model is done replacement, the combination, discrete of parts well know in the art, and the utility model implementation step is done well know in the art being equal to change or replace and all do not exceed exposure of the present utility model and protection domain.

Claims

1, a kind of axle sleeve type internal fixation collet chuck comprises expansion latch, expansive screw, collet chuck, thin-wall pipe; It is characterized in that described collet chuck is a tubulose, is nested in the thin-wall pipe; Described expansion latch is a long column shape, and an end is cylindrical locating basis face, and the other end is provided with internal thread and connects expansive screw, and the expansion latch passes the tubulose collet chuck, and is connected and fixed with collet chuck.

2, axle sleeve type internal fixation collet chuck as claimed in claim 1 is characterized in that the intermediate section of described expansion latch and the bar head of expansive screw are equipped with a male cone (strobilus masculinus), and the two ends of tubulose collet chuck are provided with inner conical surface, and the angle of the above-mentioned conical surface is identical.

3, axle sleeve type internal fixation collet chuck as claimed in claim 1 is characterized in that the cylindrical locating basis face end of described expansion latch is provided with at least one screw.

4, axle sleeve type internal fixation collet chuck as claimed in claim 1 is characterized in that the cylinder of described expansion latch is provided with a keyway, and dive key is installed in the keyway, is connected and fixed by screw.

5, axle sleeve type internal fixation collet chuck as claimed in claim 2 is characterized in that described tubular barrel is clipped in two ends and alternately has groove, and the groove number at two ends equates, and evenly distributes.

6, axle sleeve type internal fixation collet chuck as claimed in claim 5, the damaged surface of the latch that it is characterized in that expanding is provided with keyway dive key is installed, and the inner conical surface of the corresponding expansion latch of tubulose collet chuck one end has keyway and mates with dive key.

7, axle sleeve type internal fixation collet chuck as claimed in claim 1 is characterized in that described collet chuck is nested in the thin-wall pipe, leaves the gap between collet chuck outer surface and the thin-wall pipe internal surface.