1 answer

• 
  anhquoc38 10 months ago

  you can try....
  With curve equation For cartesian coordinate system
  r1=80 /*large radius
  r2=40 /*small radius
  h=100/* height of the spring
  a=10 /* number or colis
  x=r1*sin(t*360*a)
  y=r2*cos(t*360*a)
  z=t*h

  1. 
     anhquoc38 10 months ago

     You can refer to my file
     elliptical spring

  2. 
     anhquoc38 10 months ago

     @yaroslav: thanks for prompted

  3. 
     Yaroslav 10 months ago

     A small comment:
     (t*360*10), where
     10 - number of coils