I noticed that the TBWoods links that I posted on the previous thread is no longer working...please try http://www.tbwoods.com/Support.asp and go to CAD drawings..
I had the same problem and I decided to workaround based on a previous post http://discussion.autodesk.com/forums/thread.jspa?
The calculations will not work, you have to do it in the old fashioned way, paper, pencil, calculator or excel. I could not figure out all parameters necessary to perform the calculations.
I used this trick combined with iParts and iAssemblies of bushings and pulleys to speed up a new machine design tat had a huge amount of pulleys and belts, guess what, all from pitches 5M, 8M and 14M. The results were satisfatory and also gave a nice BOM of all belt drives and its components.
Here are some tricks an tips:
- Not all combinations belt/pulley were tested always double check. If you have some feedback on the DAcc workaround please let me know.
- I always left some extra slack (belt length) just in case.
- I used the Virtual pulley placement in order to use iParts/iAssemblies of pulleys and QD/TL bushings and get a very nice/detailed assembly. If you use the Component placement for pulleys, it will show trapezoidal teeth on the generated models.
- If you are using Inventor 2009, do not choose to represent the belt as Detailed, it will fail, choose Solid or Sketch.
Attached is a zip file that contains the files added to the existing DAcc structure and some sample images, and a Bushing and Pulley iparts as well. Please use this at your own risk and always check for dimensional issues just in case.
You should make a back up copy of your DAcc files pior to place these files (SBelts Folder on Zip File) under your default installation for the DAcc.. \Design Accelerator\Tables\ . You will notice that the subfolders of the zip file match the existing structure of DAcc.
I hope this help you out...