I am trying to mate a timing belt with two different gears. It works perfectly with one gear but when i mate with the other gear it says one of the pulleys selected is fixed. How can i avoid that? If i don't mate with the other pulley the teeth of belt just passes right through the pulley teeth.
Yes I have modeled the teeth on the timing belt. It works perfectly when I mate with one of the gears but when I try to mate with both the gears it shows error "one of the selected pulleys is already fixed". And the gears are free to rotate about shaft. When I added the concentric mate I did not lock rotation.
Mate the pulley so it can rotate.
I tried that and it is rotating perfectly about one gear.
1. The two pulleys should be free to rotate.
2. Make a set of mates that initially orient all the components properly, fixing them in place. I usually use one of the primary planes of the pulleys and belt to mate them parallel or perpendicular to a primary plane of the assembly. Rename these mates to something like "Initial Alignment-1" or whatever makes the most sense to you. You will be glad you did!
3. Use the belt mate for the belt and pulley combination. You will get a warning of overconstraint until you suppress the mates from 2, but when you do this you should have the proper moving relationship.
One last word of advice, when moving this system, do not move it too fast. SWX has to calculate all the position changes and moving something too fast can cause a misalignment. In this case the most likely result is that your chain or pulley(s) will lose their synchronization if moved too fast.
Have you modeled all the teeth on the timing belt? Not the norm in my world. But I digress, you probably need to make the "gears" free to rotate in order to mate how you are trying.