SU1519856A1 - Method of cutting curved-teeth gear set - Google Patents

Abstract

The invention relates to the field of engineering, in particular to the manufacture of gear pairs with curvilinear teeth. The purpose of the invention is the expansion of technological capabilities through the processing of gear pairs with different radii of the visible and concave sides of the teeth. The convex and concave profiles of one element of a pair (wheels) are machined with one cutting head, and the profiles of another element of a pair (gears) that are paired with them are performed by two other cutting heads, the dimensions of which are interrelated with the parameters of a cutting head designed for machining a gear wheel . 2 Il.

Description

The invention relates to the field of engineering, in particular to the manufacture of gear pairs with curvilinear teeth.

The purpose of the invention is the expansion of technological capabilities due to the processing of gear pairs with different radii of the convex and concave sides of the teeth

Fig. 1 shows a diagram of the shaping of the convex and concave sides of the teeth of the wheel with a single cutting head; FIG. 2 shows a diagram of the formation of gear teeth teeth by two other cutting heads o

The method is as follows.

The treatment of the concave side 1 (figl) and the convex side 2 with the radius Rc of the teeth of the wheel is made with a cutting head 3 with a distance

and between the directions (by them, the contact points K at the base of the tooth and, traces, R Ry, + a, where R, is constructively appointed

When machining the convex side 2, the teeth feed the tool head 3 along machine tooling line A with the gear rotated in a coordinated manner along arrow B, c. When machining the concave side 1 of the wheel teeth, the tool head 3 is fed along machine tooling line A, interconnected with the rotation of the gear wheel along arrow B

The mating gear with the zero contour of the tool rail is machined with two other cutting heads 4 and 5, the dimensions of which are interconnected by the cutting head Z.

f

00 SP

at)

assigned to handle that wheel

When machining the concave side 1 of the toothed gear, the tangential feed of the cutting head f along the machine tool line A) and simultaneous rotation of the gear in the arrow R (i Radius of rotation H of the cutting contact point K of the cutting head i {for the concave side 1 of the gear is equal to the radius of rotation of the cutting head 3 for the convex side of the 2 teeth of the wheel, measured along the line A of machine gearing

The radius of rotation R of the cutting contact point K of the cutting head 5 for the convex side 2 of the gear is equal to the radius of rotation of the cutting head 3 for the concave side 1 of the teeth of the wheel, measured along the line A, of machine tool gearing. The process of forming the convex side 2 is carried out by tangentially feeding the cutting head 5 along line A consistently with the rotation of the wheel in arrow C

In this case, the cutting radii of the cutting heads 4 and 5 are determined in accordance with the dependencies taking into account the shaping radii of the teeth of the mating wheel:

R,

 R

ig

+ a.

R,

and is appointed constructively; the distance between the opposite profiling points of the incisors at the base of the teeth

R,

AT

; R,

AT

1 - “P l - -Y1I

 2 sincf, 2 sinefj

  Ii-costflcosc p tg -5- - per

sin (-r-r--; r-r7

for here and on the side of the teeth of the wheel “p. p hrb D

rl) 2.

sor (At, r; kgpod

R

Pi

RU (iso ts c)

Pi

for the convex side (-f p tpi; for the concave side, cf, cf; r is the radius of the main circle; Hp, is the radius of the circle of centers

transition curve; C - the angle of inclination of the curvature of the teeth at their ends "

Claims (1)

Invention Formula The method of cutting gear pairs with curvilinear teeth with incisal heads, in which the right and left sides of the teeth of one of the wheels of a pair are cut with one incisal head, and the right and left sides of the teeth of the conjugate wheel are cut with two other incisive heads, characterized in that technological capabilities due to the processing of gear pairs with different radii of the convex and concave sides of the teeth, {cutting the cutting heads of the cutting heads, designed to handle the convex and concave sides of the teeth of the teeth wheel, determined according to the relation E  2 sin 2 g 1YCG, h, 2 Rg3 (1-COS If) cos2p tg -2-X-; sin (f 2 | ---; in. of tg -L 2Ru (l-cos4 i) cosoip at tg fi 2 K and C-cosu k} sozo the width of the gear rim; the angle of the machine gear when gearing the wheel, determined by the formulas: for the convex side of the wheel teeth c (.pt-CL, where R is the width of the ring gear; 50 u cutting head radius; Ru R and, constructive cutting radius of the double head; a is the distance between the opposite profiles and the points of the cutting head; 1519856 oip is the angle of machine engagement for the convex side teeth;  otp, for the concave side of the teeth 0 p  +. where 0050., z1pobd Editor L.Gratillo Compiled by And Kuznetsova Tehred M. Khodanych Proof-reader H, King Order 6642/17 Circulation 831 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Ru (l-cosyv,} r is the radius of the main circle; R is the radius of the circle center transition curve; - the angle of inclination of the teeth at their ends,; for the convex side of the teeth, C |,; for the concave side of the teeth (° C And If tpi / z. / Subscription