On 03/01/2017 11:31 AM, Chris Albertson wrote: > I think when you design one of these you have freedom to define the > mechanical detents per revolution and the number of encoder "ticks" per > revolution independently. You are arguing for these numbers to always be > the same. But why? Why not 10 ticks per detent? I think with a jog > wheel the higher the ratio the better. Four is better than one. On the > one to one case it is likely the machine (milling table) will jump in steps > as fast as the motors can move then stop at each detent. In the 10 to one > case the table would move only as fast as you turn the dial between detents. > > I'm wondering why there are detents. I don't see much reason for having > "clicks" in the wheel. My preference would be to design the wheel using > "damping grease" so I'd have a wheel then turns smoothly with bit of > friction that stays put when you release it. And to have the encoder be as > fine as possible, Maybe even optical with 4096 "ticks" per revolution so it > would have an analog feel. In this case that ratio would be 4096/0 or > infinity ticks per detent. MUCH higher then four or ten.
I'd prefer having the detents. That way I can know, without looking at the Axis screen, that I've moved .001", .01", or .1" by feeling the detent. That came in really handy on my machine especially when I was setting it up. And I find I use it quite a bit when checking other things out too. Mark ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
