Quote:
Originally Posted by Billfred
Don't get me wrong, welding is certainly a valid method of robot construction. My point was that it's possible to get around it with alternatives (bolts, rivets, etc), where it's harder to get the results of a lathe's output with something other than a lathe (ditto mills).
I'd also second sanddrag's suggestion on an arbor press and broaches. 4901 didn't have to broach anything I can think of this year, but 2815 used the heck out of a 1/2" hex broach in years past. Very easy to make roller assemblies with one--broach your rollers, then round the hex off the ends and tuck it into bronze bushings. (Or leave the hex on and put hex bearings in, but the bushings are usually cheaper and more compact if you can live with a little more friction. And generally, I've found you can.)
If you do get a pneumatic riveter, don't chuck your handheld ones. The one 2815 had was a little...portly at times, making it harder to reach into certain areas of the robot.
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That's kind of what I what I was thinking about the welder. I feel silly saying this, but I have literally no experience with pop rivets at all, although I do know that they can be very useful. Can you recommend some learning resources and/or some specific gear to get started?