Re: New Build, PM2700 lathe with Acorn, Videos and Photos <upgraded to AC servos>
Posted: Mon Apr 25, 2022 3:59 pm
by suntravel
Small upgrade today, replaced the simple set screws in the pulleys with locking assembly COM-B.
Way better torque holding an almost no runout.
Uwe
Re: New Build, PM2700 lathe with Acorn, Videos and Photos <upgraded to AC servos>
Posted: Mon Apr 25, 2022 4:13 pm
by tblough
Much better than setscrews. I use Fenner Trantorque bushing. Same principle, but smaller OD for the same shaft size so they can fit on smaller pulleys.
Re: New Build, PM2700 lathe with Acorn, Videos and Photos <upgraded to AC servos>
Posted: Mon Apr 25, 2022 4:28 pm
by suntravel
tblough wrote: ↑Mon Apr 25, 2022 4:13 pm
Much better than setscrews. I use Fenner Trantorque bushing. Same principle, but smaller OD for the same shaft size so they can fit on smaller pulleys.
Re: New Build, PM2700 lathe with Acorn, Videos and Photos <upgraded to AC servos>
Posted: Tue Apr 26, 2022 9:48 pm
by cnckeith
taper locks are the way to go! nice upgrade.
Re: New Build, PM2700 lathe with Acorn
Posted: Fri Jun 17, 2022 1:49 pm
by BillB
suntravel wrote: ↑Thu Mar 31, 2022 3:30 pm
Today I set up automatic tool measuring with a modified 3D probe. Way faster than skim cuts, under 30s per tool and ready to go
Uwe
Hi Uwe, LOVE IT! going to do the same for my lathe and buy one of these probes for the mill as well. I really hate the skim cut method, LOL. Again thanks for the recommendation on the probe.
I wanted to ask you why you made the shaft of the probe end so long? Shorter would be less run out but I assume you had a reason for how long you made it. Also what material did you make the probe tip in? Stainless?
IS there an off-the-shelf probe tip available that you know of that fits this little probe? I assume you made yours?
Re: New Build, PM2700 lathe with Acorn, Videos and Photos <upgraded to AC servos>
Posted: Fri Jun 17, 2022 2:16 pm
by suntravel
Hi,
you can just use M2.5 Tips made for dial indicators like me.
The shaft is a cheap ER16 Toolholder with 20mm shaft.
Chuck is a precision one from Bison, repeats in a 0,02mm range
Uwe
Re: New Build, PM2700 lathe with Acorn, Videos and Photos <upgraded to AC servos>