CN2832383Y

CN2832383Y - Counter-scrape countersink drill

Info

Publication number: CN2832383Y
Application number: CN 200520076731
Authority: CN
Inventors: 全意
Original assignee: Yangdong Co Ltd
Current assignee: Yangdong Co Ltd
Priority date: 2005-10-27
Filing date: 2005-10-27
Publication date: 2006-11-01
Anticipated expiration: 2015-10-27

Abstract

The utility model relates to a counter-scrape countersink drill which belongs to a cutter for machining holes. The utility model is composed of a cutter holder and a cutter, wherein both sides of the front end of the cutter holder is provided with two planes and two small inclined planes which have equal spaces, and the planes and the inclined planes mutually form an angle alpha equals 20 DEG to 40 DEG; the cutter is composed of a cutter body and a cutter blade, wherein one inner hole which is positioned at the same end with the cutter blade is a cylindrical hole and is arranged on the cutter body, one inner hole at the other end of the cutter blade is a slotted hole and the direction of the revolving of the cutting edge of the cutter blade is identical with the inclination direction of the small inclined planes of the cutter holder. The utility model is used for counter scraping and machining counter holes on workpieces of complex structures, and the utility model has the advantages of convenient, fast and safe clamping, high intensity of the cutter, long service life and high productive efficiency.

Description

The anti-counterbit of scraping

Technical field

The utility model relates to aperture knife tool in a kind of machine-building, especially for the anti-counterbit of scraping of reverse facing processing counterbore.

Background technology

The processing of counterbore often runs in actual production.Normally scraping forms on the knife bar processing with the plane counterbit on the drilling machine or be clipped in single face shaping blade.But the part that has is because the structure needs of design, counterbore is arranged on the inwall, and staggered reinforcement is arranged on the part, the surface is out-of-flatness again, harder field trash is often arranged, be difficult to carry out positive scraping processing, can only adopt the single face blade that is shaped is clipped in the processing mode that carries out reverse scraping on the knife bar with said method, be that the blade cut sword makes progress clamping on knife bar, add the man-hour drill press spindle and move upward.But adopt the general anti-method of scraping to add man-hour, because the Tool in Cutting inclement condition often is in the interrupted cut state, so very easily forge a knife; Because through hole and counter bore hole diameters differ bigger, single face shaping blade extension elongation is oversize, and is not steady during cutting, easily shake, and cutter life is short; And the cutter clamping is longer non-cutting time.

The utility model content

The technical problems to be solved in the utility model provides a kind of stable cutting, convenient mounting and clamping, intensity is good, the life-span is long, and the high processing counterbore of production efficiency is with the anti-counterbit of scraping.

The technical solution of the utility model is: the anti-counterbit of scraping, constitute by knife bar and cutter, and improvements are planes that knife bar front end both sides are whittled into symmetrical parallel, two planes are of a size of b apart, there is the little inclined-plane of symmetrical parallel at its seamed edge place, and two inclined-planes also are b at a distance of size, and the inclined-plane is long to be L ₁, inclined-plane and above-mentioned plane α at an angle to each other=20 °～40 °, described cutter is made of cutter hub and blade, and the endoporus that cooperates with knife bar is arranged on the cutter hub, and wherein the endoporus with the same end of blade is a cylindrical hole, and the other end is a long lumbar hole, and the long lumbar hole width is b ₁, the degree of depth is L ₂, b ₁=b, L ₂＜L ₁

Above-mentioned blade is 4, evenly distributes, and blade cut sword direction of rotation is consistent with the little inclined-plane of knife bar front end incline direction; Described α=30 °.

Through above improvement, because cutter is embedded in the cutter hub by 4 blades, forms 4 uniform swords and cut, and blade stretches out shortlyer, so add the stable cutting in man-hour, intensity is good, corner wear is little, long service life, and cutting parameter can strengthen, and production efficiency is improved.During clamping, the knife bar that will be contained in earlier on the lathe passes the through hole that has bored on the workpiece, and the cutting end with cutter makes progress again, put the knife bar front end from the below in hole, Tool in Cutting sword rotation direction is consistent with the machine tool chief axis rotation direction, is generally clockwise direction, when long lumbar hole on the cutter aligns with little inclined-plane on the knife bar, another mistake hour hands rotary cutter, like this, cutter just hangs on the knife bar, starts lathe, upwards mention main shaft, just can instead scrape the processing of counterbore.This cutter convenient mounting and clamping is quick, safe and reliable.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the knife bar schematic diagram;

Fig. 3 is an A-A place profile among Fig. 2;

Fig. 4 is the cutter structure schematic diagram;

Fig. 5 be among Fig. 4 B to schematic diagram.

The specific embodiment

Referring to accompanying drawing, the utility model is made of knife bar 1 and the cutter be made up of blade 2, cutter hub 3, and the cutting edge of blade is (promptly towards the knife bar tail end) upwards.4, two planes, plane that knife bar front end both sides are whittled into symmetrical parallel are of a size of b apart, and there is the little inclined-plane 5 of symmetrical parallel at its seamed edge place, also are b at a distance of size, the long L in inclined-plane ₁, inclined-plane 5 and 4 α at an angle to each other=30, plane °.Endoporus is arranged on the cutter hub, and a stomidium of endoporus directly is D ₁, with the knife bar top external diameter be d ₁Guide section become to be slidingly matched, the other end of endoporus is a long lumbar hole 6, the long lumbar hole width is b ₁, the degree of depth is L ₂, b ₁=b, L ₂＜L ₁Blade has 4, evenly distributes, and its cutting edge rotation direction is consistent with the little inclined-plane of knife bar front end 5 incline directions.

Claims

1, a kind of anti-counterbit of scraping is made of knife bar and cutter, it is characterized in that knife bar front end both sides are whittled into the plane of symmetrical parallel, and two planes are of a size of b apart, and there is the little inclined-plane of symmetrical parallel at its seamed edge place, and two inclined-planes also are b at a distance of size, and the inclined-plane is long to be L ₁, inclined-plane and above-mentioned plane α at an angle to each other=20 °～40 °, described cutter is made of cutter hub and blade, and the endoporus that cooperates with knife bar is arranged on the cutter hub, and wherein the endoporus with the same end of blade is a cylindrical hole, and the other end is a long lumbar hole, and the long lumbar hole width is b ₁, the degree of depth is L ₂, b ₁=b, L ₂＜L ₁

2, by the described anti-counterbit of scraping of claim 1, it is characterized in that described blade is 4, evenly distribute, blade cut sword direction of rotation is consistent with the little inclined-plane of knife bar front end incline direction.

3,, it is characterized in that described α=30 ° by the described anti-counterbit of scraping of claim 1.