pic: WCP: AL Gears?

[Travis Covington]

Originally Posted by Cory

The wear is insignificant, if not unnoticeable.

We shift with a 7075 dog on 4140/1144 steel gears with no wear whatsoever on the dog itself.

In 07 we had a 7075 dog on hard anodized 7075 gears and saw no wear on either the dog or dog gear.

Edit: Regarding gear tooth wear, I would rephrase this and say the wear is likely noticable, but is negligible for the relatively short life that these robots have. Steel gears also wear, but since they are rarely coated, the amount of wear you notice during the year is likely minimal since it is hard to distinguish the worm material from the surrounding material. With a hard anodize, you will likely notice "more" wear due to the differences in color of the coating and the raw aluminum.

If others did/do notice what they would consider excessive wear, I would also ask that they objectively determine if it is causing any excessive backlash, efficiency changes, or is causing further wear more rapidly.

RC, a question for you. Are these gears cut with a modified addendum and dedendum to account for the build-up of the type III anodize?