Centroid Community CNC Support Forum

teaching that old machine some new tricks! thanks for reporting back and posting the videos! very cool. LOL, that ones not old its a 1984 model. The Leblond 16x96 lathe next to it is a 1942 model and the Monarch 21X120 covered with stuff across the shop is a 1943 and theres a 60s (I think) Cincinna...

Hey guys just wanted to post back and let yall know that i finally got it. Machine is cutting good threads concidering the operator. Gotta do a little tuning in fusion(cant get intercon settings right yet) so i dont have to pick the thread back up for a second set of passes to pretty it up... but it...

Then why does it change mine and many others to proper spindle output in cnc12 mill with a ratio of -.117 entered into parm 65 or aka wizard entry spindle low gear ratio and has for 3 years with my encoder mounted on top of the spindle. :?:... And i have a comercial grade hand held laser tachometer...

1) Thread milling doesn't use the encoder, so that is why there are no problems with that. 2) Tapping on the mill will work fine in high and back gear. Peck tapping will not work in either. 3) Even if you get the "back gear" worked out in the lathe software, lathe threading will never wor...

Ok thanks for the help guys. Im just gonna give up and call it quits on on threading. Thanks for all the help.

Thanks again for explaining and i understand all of that but my encoder mounted where it is thread mills fine, i just don't like spending 60 bucks a pop for thread mills ..lol With that said if there were an issue with the encoder positioning in cnc12 lathe then there should be a problem in cnc12 mi...

Spindle speed encoder output is supposed to be the actual spindle speed and does not get changed by the back gear ratio. As Keith pointed out earlier, if you have a Bridgeport style milling head and you attached the encoder to the top of the spindle, then you are not reading the actual spindle spee...

Spindle reversing via m3 and m4 works fine. what doesn't work is when backgear or low range is selected cnc12 is not looking at and acting on parm 65 and adjusting the spindle speed encoder output accordingly.

Sorry , I forgot that i had disabled parm 412 and set inputs back when the backgear switch didnt work. Heres a report with everything set where i believe it should be reporting the proper rpm in low gear (not even trying to reverse it untill it reports speed based on parm 65 properly which it is not...

Heres a link to some quick pics, wasn't sure what would help most so shot 4 corners and top. Please disregard the mess shop is in the midle of a remodel and i'v been adding external e-stop,tool check etc.. buttons so theres a few unconected wires in the cabinet. :oops: This link should get you to th...