ADDENDUM CIRCLE

PITCH CIRCLE

BASE CIRCLE

ROOT CIRCLEA2

A3

BASE DIA

PITCH CIRCLE DIA

TIP DIA

ρ1

ρ2

ρ3

B1

BoorAo

B2

B3

A1

RB1

RB2

RB3

RA1

RA2

RA3

O

Ø1

Ø2

Ø3

RA0=RB0

α1

α2

α3

CALCULATION:-

ØI = Cos-1(RAI/RBI);

-Where RAI= Base Radius,

and RBI= Tip Radius.

αI=INV(ØI)=tan(ØI)- ØI.

(Angles are in radians.)

GEAR PROFILEHere is given the profile generation by finding points from calculating angles α.