CN2142058Y

CN2142058Y - Withdrawing device for broken threaded parts

Info

Publication number: CN2142058Y
Application number: CN 92242190
Authority: CN
Inventors: 汤家树
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-01
Filing date: 1992-12-01
Publication date: 1993-09-15
Anticipated expiration: 2002-12-01

Abstract

The utility model discloses a taking-out device for broken thread, relating to a small tool for mechanical process, in particular to a special tool for taking out broken thread and broken screw tap. The structure of the taking-out device is that two to four thread nails with tip-shaped front end are distributed on a rotary body in a tapered mode, and the rotary body is also provided with a rotary handle. With the structure, when the taking-out device is used, the thread nail with tip-shaped front end is inserted into the gap of the broken end of a screw tap; then the broken end of the screw tap is clamped, the rotary body is rotated in the opposite direction of the screw of the screw tap, and then the broken end of the screw tap is withdrawn. The utility model has the advantages of convenient operation and compact structure.

Description

Withdrawing device for broken threaded parts

The utility model is meant especially that about a kind of machine tool fracture of wire, fracture of wire awl take out specific purpose tool.

In mechanical processing process, workpiece usually needs punching boring, fracture of wire awl phenomenon then takes place when utilizing the screw tap punching often, therefore the situation that causes workpiece to scrap is a lot, once there was report the fusing of fracture of wire awl to be reached workpiece recovery purpose with the way of high temperature melting, but this high temperature melting generating means structure is comparatively heavy, and cost is high again in addition can't reach requirement on industrial application.

The purpose of the utility model is that a kind of specific purpose tool fracture of wire extractor that is particularly suitable for taking out fracture of wire (awl) will be provided, to solve the shortcoming of not having such specific purpose tool in the mechanically actuated.

This fracture of wire extractor also is provided with turning handle by tapered being distributed on the rotor of silk nail of two to four top-notch types of front end on the rotor.

The utility model of said structure utilizes the silk nail of the top-notch type of front end to insert in the slit of screw tap broken end when using, clamp screw tap broken end back and press the rightabout rotation rotor of screw tap spiral, can take out the screw tap broken end, if screw tap broken end and workpiece thread abrasion become when smooth, also can spur rotor and directly extract.

Further illustrate the utility model below in conjunction with description of drawings, provide embodiment simultaneously.

Fig. 1 is the utility model example structure cutaway view,

Fig. 2 is Fig. 1 left view.

Wherein, 1 magnetic patch, 2 special-purpose working heads, 3 locking caps, 4 rotors, 5 turning handles, 6 coupling bars, 7 handles, 8 screw mandrels.

As shown in the figure, silk nail 2 in the present embodiment, 8 have three tapered being evenly distributed in 4 holes of rotor, for easy to process, can be at rotor 4 front end additional fastening caps 3 with silk nail 2,8 is fixing, at this moment, the silk hole processing of rotor 4 becomes simpler, constitute the silk nail 2 of countersunk arrangement, 8 also can be set as two sections, the special-purpose working head 2 of front end is top-notch type, the screw mandrel 8 of rear end promotes special-purpose working head 2 and moves, separate two-stage structure if working head 2 and screw mandrel 8 be set as, be preferably in and bury magnetic patch 1 in the shape chamber of rotor 4 underground and make special-purpose working head 2 be adjacent to screw mandrel 8 to move and be unlikely tenesmus voluntarily, rotor 4 rear ends are provided with coupling bar 6 and arrest use with handle 7 with the handled easily person.

Claims

1, a kind of fracture of wire extractor is characterized in that two to four front ends dial silk nail 2,8 tapered being distributed on the rotor 4 of sharp type, also is provided with turning handle 5 on the rotor 4.

2, according to the described fracture of wire extractor of claim 1, it is characterized in that silk nail 2,8 has three tapered being evenly distributed in 4 holes of rotor, rotor 4 front end additional fastening caps 3 are fixing with silk nail 2,8.

3, according to claim 1 or 2 described fracture of wire extractors, it is characterized in that silk nail 2,8 is made up of screw mandrel 8 and special-purpose working head 2, rotor is provided with magnetic patch in the 4 shape chambeies, and special-purpose working head 2 is adjacent to screw mandrel 8, and rotor 4 rear ends are provided with coupling bar 6 and handle 7.