CN2724897Y

CN2724897Y - Gear wheel tool

Info

Publication number: CN2724897Y
Application number: CN 200420090753
Authority: CN
Inventors: 蔡渭郎
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-28
Filing date: 2004-09-28
Publication date: 2005-09-14
Anticipated expiration: 2014-09-28

Abstract

The utility model relates to a machine work cutting tool, particularly a structure improvement of a gear cutter used for involute cutting, non-involute gear cutting, etc. The utility model mainly solves technical problems existing in the prior art that the cutting gear has bigger noise when running-in, etc. The utility model comprises a shaft body (1), and a plurality of teeth cutters (2) are distributed on the shaft body. The teeth cutters are distributed on the shaft (1) in a spiral shape. The utility model is characterized in that the relation of the mode number m 1 of the teeth cutters (2) and the mode number m 2 of the standard gear is 80%m 2<=m 1<m 2, and the pressure angle alpha of the teeth cutters is 5 DEG <= alpha <20 DEG.

Description

Cutter for gear wheel

Technical field

The utility model relates to a kind of machining cutting element, in particular for the isostructural improvement of cutter for gear wheel of cutting involute, non-involute gear.

Background technology

At present, the hobboing cutter that is used for Cutting Machining of Gear is made up of knife bar, hobboing cutter, axial location part etc.Its hobboing cutter is sleeved on the knife bar, transmits cutting force by key.In hobbing process, because the rake face of each cutting teeth of hobboing cutter has only one, promptly thick, smart cutting is all finished by hob profile, and therefore, the hobboing cutter quality requirement is higher.In addition, the existing hobboing cutter mould that is used to make gear all is used for cutting master gear, but master gear is as being applied in places such as motorcycle starter axle, and noise is bigger.

Summary of the invention

The utility model mainly is the technical problem of the bigger grade of noise when solving the gear break-in of existing in prior technology cutting.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:

Cutter for gear wheel of the present utility model, comprise axis body, be distributed with some serrated knives on the axis body, serrated knife is distributed on the axis body twist, it is characterized in that the modulus m1 of described serrated knife and the pass of master gear modulus m2 are: 80%m2≤m1＜m2, the pressure angle α of serrated knife are 5 °≤α＜20 °.The master gear modulus is the module of national regulation.The modulus m1 of serrated knife can be 95% of master gear modulus m2, can reduce the tooth pitch of serrated knife like this, thereby the pressure angle α of the feasible gear that is cut is littler than the pressure angle of corresponding standard gear, and the contact area when reducing gears engaged reduces noise.

As preferably, described serrated knife like this can economical with materials along the circumferentially-spaced of axis body.

Therefore, noise is less, rational in infrastructure when the utlity model has the gear break-in of cutting, etc. characteristics.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the present utility model;

Accompanying drawing 2 is a kind of A-A cutaway views of Fig. 1.

The specific embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: the cutter for gear wheel that this is routine is used for cutting the gear of making on the motorcycle starter axle.As Fig. 1, Fig. 2, it has a cylindrical axis body 1, the spiral serrated knife 2 that distributing on the axis body, serrated knife 2 prolongs the circumferentially-spaced of axis body 1.The master gear modulus of the reference of this routine serrated knife 2 is m2=1, and pressure angle is 20 degree.The modulus m1 of serrated knife 2 is 95% of master gear modulus m2, i.e. m1=0.95; As Fig. 2, the pressure angle α of serrated knife is 13 degree 30 minutes less than the pressure angle of master gear.

During use, only need cutter for gear wheel is contained on the power set, start power set, the cutter for gear wheel rotation, the serrated knife 2 on it just can cut blank, until formed product.

Claims

1. cutter for gear wheel, comprise axis body (1), be distributed with some serrated knives (2) on the axis body, serrated knife is distributed on the axis body (1) twist, it is characterized in that the modulus m1 of described serrated knife (2) and the pass of master gear modulus m2 are: 80%m2≤m1＜m2, the pressure angle α of serrated knife are 5 °≤α＜20 °.

2. cutter for gear wheel according to claim 1 is characterized in that the circumferentially-spaced of described serrated knife (2) along axis body (1).