CN201300219Y

CN201300219Y - Boring shell toolbar

Info

Publication number: CN201300219Y
Application number: CNU2008201233460U
Authority: CN
Inventors: 郑文虎
Original assignee: Beijing Nankou Railway Transit Machinery Co Ltd
Current assignee: Beijing Zhongche Nankow Machinery Co Ltd
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-09-02
Anticipated expiration: 2018-10-31

Abstract

The utility model belongs to the machining field, in particular to a boring shell toolbar of a boring step deep hole applied on a lathe or a boring machine. Both ends of the toolbar are respectively sleeved with a front supporting sleeve and a rear supporting sleeve, a boring cutter is mounted on the toolbar at the middle part of the two supporting sleeves, and is fixed by pressure screws; the rear end of the toolbar is adjusted in height by a shim and is fixed on a square tool desk of the lathe; and a slotted hole in the middle of a boring workpiece 2 is completed by a single procedure. The device improves the rigidity of the toolbar, prevents the vibration of the toolbar during cutting, ensures the position precision of the middle hole and two end holes, the roughness of the workpiece surface is good, the operation is simple and the efficiency is high, and problems of the traditional boring hole are solved.

Description

Boring housing knife bar

Technical field

The utility model belongs to field of machining, is specifically related to a kind of boring housing knife bar that is applied in boring stage deep hole on lathe or the boring machine.

Background technology

In the mechanical processing process, when the class workpiece of processing inner step hole, the short step hole at two ends, the use knife bar is short, the cutter of good rigidly, than being easier to processing; But during the slotted hole between work in-process,, when turning, easily produce vibration because the knife bar of cantilever cutter is long, poor rigidity, the inner bore surface roughness extreme difference that processing obtains, the fine finishining difficulty, length consuming time, and be difficult to reach processing criterion, influence processing progress.

Summary of the invention

The utility model is at the problem of slotted hole difficulty in the existing thorax cutter processing, a kind of boring housing knife bar of boring stage deep hole is provided, it is characterized in that, splicing sleeve 1 and back splicing sleeve 6 before the two ends of knife bar 3 are with respectively, thorax cutter 4 is installed on the knife bar 3 of two splicing sleeve mid portions, and is fixed with pressure screw 5; Knife bar 3 rear ends are with edge bearing adjustment height and be fixed on lathe side's cutter platform 7.

Described knife bar 3 and preceding

splicing sleeve

1 and 6 of the splicing sleeves in back are for being slidingly matched.

The beneficial effects of the utility model are: improved the rigidity of knife bar, prevented the vibration of knife bar in working angles, guaranteed the positional precision of interstitial hole and two stomidiums, workpiece surface roughness is good, and is simple to operate, and the efficient height has solved the problem that traditional bore hole exists.

Description of drawings

Fig. 1 is an apparatus structure schematic diagram described in the utility model.

Number in the figure:

Spider before the 1-; The 2-workpiece; The 3-knife bar; 4-thorax cutter; The 5-pressure screw; Spider behind the 6-; 7-side's cutter platform.

The specific embodiment

The utility model provides a kind of boring housing knife bar, and the invention will be further described below in conjunction with the drawings and specific embodiments.

Fig. 1 is an apparatus structure schematic diagram described in the utility model.Carry out workpiece and add man-hour, the endoporus at the good workpiece of first car 2 two ends so that the preceding splicing sleeve 1 and the back splicing sleeve 6 of locating with this two hole is installed, the slotted hole in the middle of the boring workpiece 2, done a single operation and is finished.

When the slotted hole of boring workpiece centre, earlier preceding splicing sleeve 1 is packed in the endoporus of workpiece left end, again workpiece is installed on the lathe, the length adjustment that boring cutter 4 is stretched out outside the knife bar 3 is good, and it is fixing with pressure screw 5, back splicing sleeve 6 is packed into together with knife bar 3 in the endoporus of workpiece right-hand member, and knife bar 3 rear ends are with edge bearing adjustment height and be fixed on lathe side's cutter platform 7, knife bar 3 and preceding splicing sleeve 1 and afterwards 6 of splicing sleeves for being slidingly matched.

Start lathe and make workpiece 2 rotations, the beginning long feed cuts, till the workpiece hole degree of depth is arrived in feed; After the workpiece car is intact, reverse mobile knife bar 3, boring cutter 4 drives back splicing sleeve 6 and withdraws from together outside the workpiece hole, finishes workpiece processing.

Use described device to internal diameter D=φ 83mm, the endoporus of length L=750mm carries out boring processing, and the positional precision and the workpiece surface roughness of interstitial hole and two stomidiums all satisfy processing request.

Claims

1. boring housing knife bar is characterized in that, is with preceding splicing sleeve (1) and back splicing sleeve (6) respectively at the two ends of knife bar (3), goes up at the knife bar (3) of two splicing sleeve mid portions thorax cutter (4) is installed, and fix with pressure screw (5); Knife bar (3) rear end is with edge bearing adjustment height and be fixed on lathe side's cutter platform (7).

2. boring housing knife bar according to claim 1 is characterized in that, between described knife bar (3) and preceding splicing sleeve (1) and back splicing sleeve (6) for being slidingly matched.