On Tue, May 22, 2018, 20:53 Gene Heskett <ghesk...@shentel.net> wrote:
> > Ouch, unless its a timing belt, otherwise there will be slippage, making > the scale more of a SWAG than accurate. Yes, 1 inch wide xl 037 That, and the fact that I wasn't aware the encoders > output was differential, meant I had to use some under a buck a copy, > rs485 gismo's setup as receivers only to convert the differential to TTL > for the 5i25 inputs. But to get to the 5i25, I had to rip out the opto's > in the BoB's input for the A/B inputs. > My encoders are completely unknown to me, and I cannot find much > information on them. > I have 2 Bob's that are just vias directly to db 25. I may have to make a 50 pin adapter for them . I don't know yet if I will have to buffer the signal, how did you know you needed to ? > > > > > is there any reason I should choose a higher count? > Way more than that is well tolerated now. If you are 1/1, then I > wouldn't consider an encoder under 1000 lines, your PID tuning will be > much much easier. > > > > 1/2" 13 tpi, is a tall order. How much torque is available? 620 oz inches , 3.2 kw at this time. I have my eye on a bldc at 37.5 n/m at 5kw if I can scratch up the funds. Rigid tapping isn't an immediate issue but would be nice. > > > Gripping the tap in a collet, R8 or a TTS ER-20 without the positive > coupling, tightly enough to prevent slippage. > I have a bt30 spindle in the works. I hope soon to have this thing reassembled, it's been a couple months since it made chips. Thank you for your advice. ------------------------------------------------------------------------------ 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
