Quote:
Originally Posted by Richard Wallace
Can you point me to a C-C distance calculator that works with the GT2 3mm 12 tooth pinions that WCP sells? The one at SDP-SI only goes down to 16 tooth.
I would like to use this pinion to drive a 44 or 45 tooth pulley from SDP-SI. Will exact C-C set up work, or will I need a side tension system to keep six teeth of the pinion engaged to the belt?
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It's actually pretty easy to do in Solidworks. Draw out the belt as a bunch of arcs with a diameter of (3mm * num_teeth / pi) and straight lines. Use the Path Dimension feature (It's in the drop-down menu in the sketch menu under the Smart Dimension tool) and select all the lines. Set the path length to (3mm * num_belt_teeth). Done!
For short belt runs, you might want to remove a couple thou. We tend to just run exact c-c and move on. For longer ones or more critical ones, we add a tensioner.