CN201300239Y

CN201300239Y - Wheel groove semi-finished milling cutter with wavy cutting edge

Info

Publication number: CN201300239Y
Application number: CNU200820090121XU
Authority: CN
Inventors: 刘毅; 杜佩芳; 韩勤刚; 王平; 姜祥军
Original assignee: Harbin No1 Tool Making Co Ltd
Current assignee: Harbin No1 Tool Making Co Ltd
Priority date: 2008-06-03
Filing date: 2008-06-03
Publication date: 2009-09-02
Anticipated expiration: 2018-06-03

Abstract

The utility model discloses a wheel groove semi-finished milling cutter with a wavy cutting edge, which comprises a taper handle. The end part of the taper handle is connected with the edge part of the milling cutter, an edge flute at the edge part is a spiral flute with equal spiral angles, a sine-wavy chip breaker groove is arranged on the tooth back of the edge part, tooth pitch divided by tooth number equals the waveform staggered distance of adjacent two rows of teeth, and the teeth at the edge part present a shape of a Christmas tree. The advantages of the semi-finished milling cutter are as follows: (1) the vibration-reducing property is good; (2) the cutting data is increased; (3) as the wavy cutting edge enhances the rigidity of the cutting-scrap curling direction, more energy are absorbed in the curling process, the chips breaking is easy, the chips removing is smooth, the cutting edge is short, vibration cannot be easily incurred at the cutter, the volume of cutting scraps is small, the chips removing is easy, and the processing is convenient; (4) the cutting efficiency is high.

Description

Waveform sword semi-precise milling cutter for concave groove

Technical field

The utility model relates to a kind of milling cutter, specifically is a kind of waveform sword semi-precise milling cutter for concave groove.

Background technology

The wheel slotting cutter of the impeller of China's steam turbine industry processing at present groove is introduced from US Westinghouse company, half finish-milling cutter is the rod-type milling cutter of straight flute, 0 ° of anterior angle, this Christmas, tree-like milling cutter was in stable cutting, aspects such as cutting ability and efficient and durability all can not satisfy the constantly needs of development of steam turbine industry, its ability that suppresses flutter is also lower, when feed is big, will produce vibration, can not normally cut.So every processing just needs the tool changing reconditioning for 1.0 meters, working (machining) efficiency is low.Often tool changing is wasted time and energy, and influence is produced.

Summary of the invention

The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, provides a kind of construction simple, reasonable in design.The waveform sword semi-precise milling cutter for concave groove that dimensional accuracy, suface processing quality all improve a lot.

In order to achieve the above object, the technical solution adopted in the utility model is: taper shank is connected the milling cutter blade by the taper shank end, the flute of blade is the spiral goove of equal helix angle, it on the back of tooth of blade sine-shaped chip-breaker, the distance that adjacent two toothrow waveforms stagger be tooth pitch divided by the number of teeth, the profile of tooth of blade is that Christmas is tree-like.

The utility model has the advantages that: (1), vibration damping are good: because blade is discontinuous, cut workpiece easily, again because of the increase of thickness of cutting, reduce the sliding phenomenon of blade on surface of the work.Thereby improved the ability that suppresses flutter.(2), improve cutting data: the spiral goove that equal helix angle is 3～10 °, can realize inclined cutting, reduce cutting deformation and energy consumption.The sinusoidal waveform of toothed surfaces, adjacent two teeth are axially staggering.Can reduce chip deformation, thereby reduce cutting force and heat in metal cutting, also help chip removal.Increase substantially feed engagement.(3), because the waveform sword increases the rigidity of chip curling direction, make curly course absorb more energy, chip breaking is easy, chip removal is smooth and easy, cutting edge length is short, cutter is difficult for producing vibration.Chip volume is little, and chip removal is easy, and it is convenient to handle.(4), the stock-removing efficiency height: because the damping property of cutter is good, the durability height allows to adopt big feed, full depth, so can the place of crude milling cutter, the processing of half finish-milling cutter, unite two into one, production efficiency can improve 7～8 times

Description of drawings

Fig. 1 is the utility model product structure schematic diagram;

Fig. 2 is the A enlarged diagram of Fig. 1;

Fig. 3 is the right view of Fig. 1;

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

As shown in Figure 1, the utility model is a kind of waveform sword semi-precise milling cutter for concave groove, comprise taper shank 1, taper shank 1 is connected milling cutter blade 3 by taper shank end 2, the flute of blade 3 is the spiral goove of equal helix angle, be sine-shaped chip-breaker 4 on the back of tooth of blade 3, the distance that adjacent two toothrow waveforms stagger be tooth pitch divided by the number of teeth, the profile of tooth of blade 3 is that Christmas is tree-like.

The milling cutter flute is the spiral goove of 3～10 ° of equal helix angles, and the anterior angle of holding about tool-tooth profile is 10 °, and staggered sine-shaped tooth pitch is that 1～1.5mm, curvature are that R0.3～1mm, relief angle are Archimedes spiral.

The distance dependent of the metering diameter of taper shank end face 2 and blade 3, its deviation is ± 0.0127mm.The profile of tooth of blade 3 is that Christmas is tree-like, is 0.2mm with respect to the profile of tooth allowance of finish-milling cutter, and the profile of tooth tolerance is 0.03mm.The run-out tolerance of all diameters is 0.0127mm on total length.Profile of tooth is checked on φ 800 projecting apparatus and is checked with axially amplifying the chart board rotation.

Version key of the present utility model is at blade 3, and the surface of the blade back of tooth shown in Fig. 2 is a sinusoidal waveform, is staggered, and it is good to process workpiece surface quality.Among Fig. 3, promptly the anterior angle at the big small end of milling cutter is that 10 ° of lip surfaces are the spiral goove of 3～10 ° of equal helix angles, and Christmas, tree-like toothed surfaces had staggered sinusoidal waveform, and its tooth pitch is that 1～1.5mm, circular arc R 0.3～1mm, relief angle are Archimedes spiral.

Profile of tooth by the utility model processing back workpiece is a tree-like groove on Christmas.

Claims

1. waveform sword semi-precise milling cutter for concave groove, comprise taper shank (1), it is characterized in that: taper shank (1) is connected milling cutter blade (3) by taper shank end (2), the flute of blade (3) is the spiral goove of equal helix angle, be sine-shaped chip-breaker (4) on the back of tooth of blade (3), the distance that adjacent two toothrow waveforms stagger is that tooth pitch is divided by the number of teeth.

2, waveform sword semi-precise milling cutter for concave groove according to claim 1, it is characterized in that: the milling cutter flute is the spiral goove of 3～10 ° of equal helix angles, the anterior angle of holding about tool-tooth profile is 10 °, and staggered sine-shaped tooth pitch is that 1～1.5mm, curvature are that R0.3～1mm, relief angle are Archimedes spiral.