HOW TO DESIGN INTERNAL SPUR GEAR IN CREO PARAMETRIC

Learn how to create an internal spur gear in creo parametric. Hope you benefit from it and learn some new concepts.

Relations Equations

circular_pitch = pi*module /*circular pitch
addendum = module /*addendum
dedendum = 1.25*module /*dedendum
refrence_dia = module*no_of_teeth /*refrence dimeter
tip_dia = refrence_dia+2*addendum /*tip diameter
root_dia = refrence_dia-2*dedendum /*root_diameter
base_dia = refrence_dia*cos(press_angle) /*base_diameter
root_fillet = 0.38*module /*root fillet radius
semitopping = 0.1*module
tooth_thick = circular_pitch/2 /*tooth thickness

Involute Curve Profile Equations

theta = 90*t
angle_ratio = theta/360
S = angle_ratio*pi*base_dia
base_radius = base_dia/2
Xc = base_radius*cos(theta)
Yc = base_radius*sin(theta)
X = Xc+(S*sin(theta))
Y = Yc-(S*cos(theta))
Z = 0