GearHeads Corner
June 05, 2020, 05:13:51 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
   Home   Help Search Login Register  
Pages: [1]
Author Topic: [Sharing] rotation function for an elliptical gear  (Read 1182 times)
0 Members and 1 Guest are viewing this topic.
Posts: 1

View Profile
« on: September 08, 2014, 01:12:47 PM »


just wanted to share an informati on I got from Art on a question I sent via mail. I needed the rotation-angle for the slave-wheel of an eliptical gear-couple:

To figure out the rotation of an elliptica ls mate, I use an integrati on formula, which can be hard to use in
a spreadshe et..

dist = major axis radius.
double inc = .0005;
double total = 0;

for( double a = 0; a <= ang; a+= inc )
 double r1 =  "Elliptica l radius at "inc" angle" ( From formula I sent earlier).
 total += (r1 / ( dist - r1))*inc;
Gear#2 angle =  total + PI - ( PI/  m_Order);

BUT... you may find this following method far easier... The following formula
will work for an elliptica l order 1 meshed to another order 1

Ang2 = the rotation angle of Gear#2
Ang1 = the master gears rotation angle.

Plug your values in this and youll get a very quick and accurate result.

Ang2 = atan(( 1 + e) / ( 1 - e) * tan(Ang1/ 2))*2;

This helped me to create my own gear-simulation inside blender with the help of drivers.

May this informati on be helpfull for others...


Pages: [1]
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!