CN2060097U

CN2060097U - Double negative variable-position strong end mill cutter

Info

Publication number: CN2060097U
Application number: CN 89216296
Authority: CN
Inventors: 张来泽; 刘永轼; 周世学; 李宗俊; 韩尚珍
Original assignee: XINTAI CITY CUTTING TOOL PLANT SHANDONG PROV
Current assignee: XINTAI CITY CUTTING TOOL PLANT SHANDONG PROV
Priority date: 1989-12-05
Filing date: 1989-12-05
Publication date: 1990-08-08

Abstract

The utility model discloses a double negative edge variable-position strong end milling cutter which adopts a locating ring 2 and an axial location screw 1 to realize the axial location of a cutter blade. A heavy section and whole wrap cutter shim 7 and the tetragon cutter blade whose back angle is in the degree of zero are designed, which makes that the resistance to impact, the machining accuracy and the service life of the end milling cutter all are greatly improved; the cutting power of a milling machine is little increased, proceeding the milling of full depth (full edge). The utility model is suitable for the uses of various milling machines, and has a comparatively strong milling force to high-strength steel and quenched steel.

Description

Double negative variable-position strong end mill cutter

The utility model discloses the face cutter that a kind of indexable powerful milling of double negative blade is used, is a kind of cutter.

In mechanical processing process, in, the powerful milling of the roughing full depth degree of depth often runs into, especially for the more unmanageable material of quenching steel geometric ratio that reaches HRC60 such as hardness after potassium steel, high-strength steel and the quenching, employing is carried out powerful milling with the method for milling the generation mill, not only can solve the unmanageable problem of these materials, and can enhance productivity significantly.Powerful Milling Process is all had higher requirement for impact resistance, service life and the precision of cutter, designs that shock resistance is good, long service life, face cutter that precision is high can fundamentally enhance productivity, and reduces production costs.This problem is that the engineers and technicians in this field are devoted to one of difficult problem that solves for many years.

Invention task of the present utility model is the indexable end mill(ing) cutter that a kind of shock-resistant, life-span of design is long, can be used for carrying out powerful milling.

Figure of description 1 is a structure front view of the present utility model.Among the figure: 1 axial location screw, 2 centring rings, 3 cutter hubs, 4 briquettings, 5 pinching screws, 6 blades, 7 edge bearings, 8 screws, 9 locking nuts, 10 spring washers.

Figure of description 2 is right views of the present utility model.

Design philosophy of the present utility model shows as:

1, adopt the edge bearing of the full packet form of big thickness, improve the impact resistance of blade, the protection cutter hub is the service life of easy damaged, increase cutterhead not.

2, milling cutter employing end, post rake angle are negative rake.Blade relief is a zero degree, and promptly the angle of wedge of blade is 90 °, has guaranteed the cutting hardness of blade, and blade eight swords double indexable service life.

3, increase centring ring and axial location screw and locking nut etc., guaranteed that the end of blade is jumped precision, improved machining accuracy.

Now according to Figure of description, introduce concrete structure of the present utility model: the indexable powerful end mill(ing) cutter of a kind of double negative blade is made of cutter hub 3, blade 6 and edge bearing 7 and the clamp mechanism of being made up of briquetting 4, pinching screw 5 that blade, edge bearing are fixed on the cutter hub 3.It is characterized in that by screw 8 centring ring 2 and cutter hub being tightened to one at the cutter hub rear portion, be distributed with axial location screw 1 and pass centring ring and contact on the centring ring 2 with on the corresponding position of edge bearing with edge bearing, axial location screw 1 is locked itself and centring ring by locking nut 9, spring washer 10, edge bearing 7 has adopted the full pack arrangement of big thickness, the end of milling cutter, post rake angle are negative rake, blade relief is a zero degree, and promptly the angle of wedge of blade is 90 °.The centring ring of this end mill(ing) cutter has adopted toroidal, and pinching screw has adopted traditional dowel screw, and briquetting has adopted two wedge-like briquettings by two pieces of double end pinching screws itself and cutter hub to be fixed.Edge bearing has adopted and has almost comprised two sides that blade faces mutually and the full pack arrangement form of a bottom surface, and its thickness is 2～3 times of blade.Because the utility model adopted above-mentioned concrete structure, its impact resistance is improved, precision is good, the life-span doubles.The bite of this brute force end mill(ing) cutter can reach 14～17mm, and the monodentate depth of cut can reach 0.5mm, and cutting speed can reach 180 meters/minute.Cutter hub adopts the integral quenching PROCESS FOR TREATMENT.Therefore, it is not fragile that the improper cutter hub of forging a knife during phenomenon in use takes place, and can continue to use after changing blade or edge bearing, guarantees that precision is constant.

In the specific embodiment of the present utility model: the diameter of cutterhead is 160mm, the number of teeth 8, milling cutter end tooth anterior angle-5 °, post rake angle-8 °.The blade tool cutting edge angle is 75 °, adopts the quadrangle blade of 90 ° of 16 * 16mm angles of wedge, and nose angle is circular arc R 1.6mm.Cutter hub and centring ring all adopt the 40Cr material to grind through Quenching Treatment and form.Edge bearing has adopted T7 materials processing to make.This milling cutter promptly guarantees the cutting hardness of blade, does not increase excessive machine power again.Increase by 0.125 kilowatt through practical measurement power, so on general milling machine, all can use.

Claims

1, the indexable powerful end mill(ing) cutter of a kind of double negative blade is made of cutter hub 3, blade 6 and edge bearing 7 and the clamp mechanism of being made up of briquetting 4, pinching screw 5 that blade, edge bearing are fixed on the cutter hub 3, it is characterized in that:

A, by screw 8 centring ring 2 and cutter hub are tightened to one at the cutter hub rear portion, be distributed with axial location screw 1 and pass centring ring and contact with edge bearing on the centring ring 2 with on the corresponding position of edge bearing, axial location screw 1 is fixed itself and centring ring by locking nut 9, spring washer 10;

B, edge bearing 7 have adopted the full pack arrangement of big thickness;

The end of c, milling cutter, post rake angle are negative rake, and blade relief is a zero degree, and promptly the angle of wedge of blade is 90 °.

2, according to the indexable powerful end mill(ing) cutter of the described double negative blade of claim 1, it is characterized in that centring ring 2 has adopted toroidal, can adopt the 400Cr material to make.

3, according to the indexable powerful end mill(ing) cutter of the described double negative blade of claim 1, it is characterized in that edge bearing has adopted and almost comprised two sides that blade faces mutually and the full pack arrangement form of a bottom surface that its thickness is 2～3 times of blade, can adopt T7 materials processing manufacturing.

4, according to the indexable powerful end mill(ing) cutter of the described double negative blade of claim 1, it is characterized in that the end tooth anterior angle-5 °, post rake angle-8 ° of milling cutter, 75 ° of blade tool cutting edge angles adopt the quadrangle blade of 90 ° of 16 * 16mm angles of wedge, and nose angle is circular arc R 1.6mm.