SU1526935A1 - Method of machining wheels with curvilinear shape of involute teeth - Google Patents

Abstract

The invention relates to machining gear wheels, in particular to the production of gear wheels with circular involute teeth and cutting heads. The aim of the invention is to increase the productivity and accuracy of processing by combining the division and processing processes. A cutting head with end teeth of a symmetrical profile, the angle of which is equal to the angle of machine engagement, i.e. the involute pressure angle on the circumference of the lower active points of the side surface of the teeth, is cut into the depth of the wheel teeth in the middle plane. The shaping of the wheel teeth is carried out with a consistent rotation of the wheel and movement of the head along the engagement line. The rotation of the wheel and the movement of the head are performed by an amount multiple of the circumferential pitch of the teeth along the main circumference of the wheel to be machined, which is fixed when the tool returns to its original position. 2 Il.

Description

The image refers to the field of mechanical engineering, in particular to the machining of gear teeth. H KOn iec with circular involute teeth.

The purpose of the invention is to increase productivity and accuracy by combining the processes of de,: | low and profiling.

FIG. 1 shows the machine tool meshing gear of the gear-cutting go.yuvki with gear kopesyom: in FIG. 2 is a section A-A in FIG. one.

The tool and the form of a cutting head 1 have face teeth of symmetry 1 | 1h | Og (.1 profile with yiviOM, in diametral section equal to the angle of machine engagement, which is equal to yr. iy pressure on the circumferential radius Rpf of the lower active points Ki and K. evolutive 11ro (|) 11.1 teeth on the teeth) of the abateeable wheel, t .

and .. ,, - and g with cos

g "Kfi

 The radius of the axis (| the hand of the wanted Ko. Ieca;. The radius of the circumference of the lower active points is) during / / by the gno nro (}) and. 1

tooth |, ev Ko.ieca.

Reztsov go. yuvka 1 ustanav. | inas1s rel (to and ge.-C) But Zubchatlst) ko.icha 2 so. The axis of symmetry of its teeth is in the shaft 1, its cross section is crossed by the ocii Ko.ieca. Pi; i, i .ch L nfia-nkmsh R, and K of the instrument | 1У - - (( |; | - |.-1011ki. Passing through the points Ki and K-. Form c || py, respectively: :) in. 1vent tros (|) and 1I. and 4 teeth and sv zan1 1 dependent

R. K, u.

where s is the width of the vein1) 1 o. pbien Ko.ieca

circumference .. a a ,,.

Radio penetration peuioBoii gp, .H I

on I1adiny hf wasp six. 1Is in

the middle plane of Ko.ieca (c lpe / iKa P).

then {N zovuyu.ovku 1 Mixed) t under

ello

Oi CD 00 ate

angle a;

by

.1 engagement links .ViO | in the direction of the arrow d from the base to the top of the tooth with simultaneous rotation of the workpiece along arrow B |. The movement of the cutting head 1 is terminated at the point O. The magnitude of the movement U.Oi is a multiple of the circumferential tag along the main circumference of the wheel.

With this movement, the incisal head 1 completely cuts off the allowance P2 and forms the concave side of the tooth along an involute curve. At the same time, the wheel is turned at an angle equal to the number of circumferential steps of movement K | O | heads.

Then the wheel is stopped, and the cutter head 1 is moved in the radial direction along the arrow Hi by an amount that provides a sufficient gap between the tops of the teeth of the head and the circumference of the tips of the teeth R ,, of the gear wheel. Then the tool head 1 is moved along arrow A: to the original position. Further, the process of forming the concave side of the intermediate teeth is carried out through an integer number of teeth. When the number of teeth cut by the wheel is not a multiple of the number of district pagas, every 360 ° gives an additional turn of the wheel by one corner pin. The formation of the involute curve 3 is carried out by the cutting point Kj.

After machining the concave side of all teeth, the direction of rotation of the wheel in arrow B and the movement of the tool head 1 but arrow C are changed. In this case, the length of the shaping net is equal.

0

five

0

five

0

The formation of the involute curve 4 (the convex side of the teeth) is carried out by the cutting point K2. The process is in the same order as for the concave side of the teeth.

The process of shaping the sides of the tooth and the return stroke of the cutting head 1 takes place in an automatic cycle. The order of tooth machining is not regulated.

Claims (1)

Invention Formula The method of machining gears with a curvilinear shape of involute teeth under continuous running conditions of separately convex and concave sides of the teeth with a tool in the form of a cutting head with face teeth, the axis of which in the initial position is set parallel to the center plane of the wheel, then perform a plunge to the depth of the cavities, and tooth profiling is carried out with consistent wheel rotation and tool feeding along the engagement line, characterized in that, in order to increase productivity and accuracy with Movements of the division and profiling processes, coordinated movements are performed by an amount multiple of the circumferential toothing along the main circumference of the wheel, which, when returning the tool to its original position, is fixed, using a cutting head with a symmetrical profile teeth. FIG. 2