CN202162437U

CN202162437U - Vertical tree-typed formed cutter

Info

Publication number: CN202162437U
Application number: CN2011201989253U
Authority: CN
Inventors: 刘剑; 孙盛丽
Original assignee: Harbin Turbine Co Ltd
Current assignee: Harbin Turbine Co Ltd
Priority date: 2011-06-14
Filing date: 2011-06-14
Publication date: 2012-03-14
Anticipated expiration: 2021-06-14

Abstract

A vertical tree-typed formed cutter, which relates to the vertical tree-typed formed cutter. In the vertical tree-typed formed cutter, problems that each gear feeding amount of the conventional vertical tree-typed formed cutter is limited, the working efficiency is low, and the processing cycle of a turbine rotor wheel groove is seriously influenced can be solved. The vertical tree-typed formed cutter comprises a cutter handle (1), a circular bead (2) and a cutter head (3), wherein the cutter handle (1), the circular bead (2) and the cutter head (3) are successively formed into a whole from left to right, the cutter head (3) is vertical tree-typed, a helical angle (beta) of the cutter head (3) is 5 degrees, a right end front rake angle (alpha1) of the cutter head (3) is 10 degrees, and a left end front rake angle (alpha2) of the cutter head (3) is 12 degrees. A workpiece can be gradually cut and separated by the cutter tooth of the vertical tree-typed formed cutter. The vertical tree-typed formed cutter has the advantages that: the impact is smaller, the cutting is stable, the chip removal is easy, the working efficiency is improved, the processing cycle of the turbine rotor wheel groove can be shortened, and the formed cutter is applicable to process of the turbine rotor wheel groove.

Description

A kind of vertical tree-like profile milling cutter

Technical field

The utility model relates to a kind of profile milling cutter.

Background technology

Turbo rotor groove is processed employed cutter and is vertical tree-like profile milling cutter, and at present employed is that vertical tree-like profile milling cutter (half finish-milling cutter) radial rake is a zero degree, and the axial screw angle is the straight trough cutter of zero degree; Using should be vertical tree-like during profile milling cutter, and cutter tooth is cut simultaneously and cut out, and the area of cut is big; Cutting load is heavy; So feed engagement is restricted, the efficient of work is low, has had a strong impact on the process-cycle of turbo rotor groove.

The utility model content

The purpose of the utility model is to be restricted in order to solve existing vertical tree-like profile milling cutter feed engagement, and the efficient of work is low, has had a strong impact on the problem of the process-cycle of turbo rotor groove, and then a kind of vertical tree-like profile milling cutter is provided.

The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: a kind of vertical tree-like profile milling cutter of the utility model comprises handle of a knife, shoulder and cutter head; Handle of a knife, shoulder and cutter head are processed one from left to right successively; Cutter head is for vertical tree-like; The helixangle of cutter head is 5 °, and the right-hand member anterior angle α 1 of cutter head is 10 °, and the left end anterior angle α 2 of cutter head is 12 °.

The utlity model has following beneficial effect is: 1. workpiece can cut and cut off to the cutter tooth of the utility model gradually, less impact, and stable cutting is easy to chip removal, has improved operating efficiency, and has shortened the process-cycle of turbo rotor groove.The utility model radially have an anterior angle, axially have helical angle, make the operating efficiency of processing turbo rotor groove improve 1.5-2 doubly.3. the utility model is in the processing of actual rotor race; Make race roughing milling cutter and semi-precise milling cutter for concave groove be combined into the vertical tree-like milling cutter of a band anterior angle, helical angle; Remove the use of roughing milling cutter from, not only effectively raised working (machining) efficiency, but also saved the expense of buying race roughing milling cutter.

Description of drawings

Fig. 1 is the front view of the utility model; Fig. 2 is the partial enlarged drawing of Fig. 1 at the A place; Fig. 3 is the partial sectional view of Fig. 1; Fig. 4 is the sketch map of cutter head 3 right-hand member anterior angles; Fig. 5 is the sketch map of cutter head 3 left end anterior angles; Fig. 6 is the structural representation of chip pocket 3-2.

The specific embodiment

The specific embodiment one: combine Fig. 1-Fig. 5 that this embodiment is described; A kind of vertical tree-like profile milling cutter of this embodiment comprises handle of a knife 1, shoulder 2 and cutter head 3; Handle of a knife 1, shoulder 2 and cutter head 3 are processed one from left to right successively, and cutter head 3 is for vertical tree-like, and the helixangle of cutter head 3 is 5 °; The right-hand member anterior angle α 1 of cutter head 3 is 10 °, and the left end anterior angle α 2 of cutter head 3 is 12 °.

This embodiment makes the cutter tooth of cutter can cut and cut off workpiece gradually, less impact, and stable cutting is easy to chip removal.

The tool orthogonal rake of this embodiment is big, and cutting edge is sharp, can reduce chip deformation, and cutting force and cutting power are reduced, and heat in metal cutting reduces, and improves cutter life.But anterior angle is crossed senior general edge strength is reduced, descend to cutter life, even cause tipping.Through test of many times, the anterior angle of profile milling cutter is designed to become preceding corner structure, and promptly cutter head right-hand member anterior angle α 1 is 10 °, and cutter head left end anterior angle α 2 is 12 °, and this parameter has best stock-removing efficiency and cutter life.

The cutter back of tooth of this embodiment is a relief grinding relief angle structural shape.The effect of relief angle is to reduce the friction between the knife face and finished surface behind the cutter.But relief angle is crossed conference and is reduced edge strength, and makes the radiating condition variation, thereby reduces cutter life.It is 3 that this profile milling cutter relief grinding relief angle is chosen as the relief grinding amount.

The specific embodiment two: combine Fig. 1 and Fig. 2 that this embodiment is described; Evenly be provided with waveform sword chip dividing groove 3-1 on the back of tooth of the cutter head 3 of this embodiment; The groove depth H of waveform sword chip dividing groove 3-1 is 0.2mm-0.3mm, and the chip dividing groove width W of waveform sword chip dividing groove 3-1 is 1mm-2mm.So be provided with, the design of waveform sword chip dividing groove, chip dividing groove is slick and sly to be connected, and smear metal becomes short strip shape during cutting, and the chip breaking effect is very good, cuts briskly, and the toughness and the intensity of cutter are guaranteed fully.Other composition and annexation are identical with the specific embodiment one.

The specific embodiment three: combine Fig. 6 that this embodiment is described; The cutter head 3 of this embodiment is provided with chip pocket 3-2; Chip pocket 3-2 is provided with the slyness connection that chamfering R is 22.5mm-37.5mm, and the angle between the center line of the bottom land of chip pocket 3-2 and cutter head 3 is 8 °-10 °.So be provided with, the cutter core thickness is evenly increased, guarantee cutter intensity.Other composition and annexation are identical with the specific embodiment one or two.

The utility model has been selected the PM HSS of M42 for use in manufacturing process, through three tempering; After hardening, it reaches HRC66-69; And the common high-speed steel material of former usefulness is merely HRC63-66 after hardening, and owing to selecting for use of new material, its service life than former raising 1.5-2 doubly.

After the vertical tree-like profile milling cutter of the utility model machines, carry out face coat and handle,, select the TiAlN coating of best results at last for use, effectively raise this cutter life through contrast test.

Claims

1. indulge tree-like profile milling cutter for one kind; It comprises handle of a knife (1), shoulder (2) and cutter head (3); Handle of a knife (1), shoulder (2) and cutter head (3) are processed one from left to right successively, it is characterized in that: cutter head (3) is for vertical tree-like, and the helical angle (β) of cutter head (3) is 5 °; The right-hand member anterior angle of cutter head (3) (α 1) is 10 °, and the left end anterior angle of cutter head (3) (α 2) is 12 °.

2. a kind of vertical tree-like profile milling cutter according to claim 1; It is characterized in that: evenly be provided with waveform sword chip dividing groove (3-1) on the back of tooth of cutter head (3); The groove depth (H) of waveform sword chip dividing groove (3-1) is 0.2mm-0.3mm, and the chip dividing groove width (W) of waveform sword chip dividing groove (3-1) is 1mm-2mm.

3. a kind of vertical tree-like profile milling cutter according to claim 1 and 2; It is characterized in that: cutter head (3) is provided with chip pocket (3-2); Chip pocket (3-2) is provided with the slyness connection of chamfering (R) for 22.5mm-37.5mm, and the angle (α) between the center line of the bottom land of chip pocket (3-2) and cutter head (3) is 8 °-10 °.