alansimpson
Mechanical
Know any sources on the web to find equations of curves (spirals, involutes, cam movements etc.) to be used to generate curves in parts?
Eng-Tips is the largest forum for Engineering Professionals on the Internet.
Members share and learn making Eng-Tips Forums the best source of engineering information on the Internet!
-
Congratulations JStephen on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
CURVE EQUATIONS
- Thread starter alansimpson
- Start date
- Status
There are some equations here and some over at mcadcentral
Guest0527211403
Mechanical
This page has an involute formula:
Spirals can be created using a cylindrical coordinate system using the following format:
r = 5 + 2*t (5 is the base radius, 2 is the pitch times the # of turns)
theta = t * 3 * 360 (The number 3 represents the total number of full revolutions made by the spiral)
z = 0 (This just makes the spiral flat)
Cams can be created using a similar method.
Example: Simple sinusoidal cam profile
r = 10 + 3 * sin(t*360)
theta = t * 360
z=0
Spirals can be created using a cylindrical coordinate system using the following format:
r = 5 + 2*t (5 is the base radius, 2 is the pitch times the # of turns)
theta = t * 3 * 360 (The number 3 represents the total number of full revolutions made by the spiral)
z = 0 (This just makes the spiral flat)
Cams can be created using a similar method.
Example: Simple sinusoidal cam profile
r = 10 + 3 * sin(t*360)
theta = t * 360
z=0
- Status