Hi, I purchased an IH mill from its previous owner a while ago and much of the hardware to convert it to cnc. I have been off on other things for a while but now want to get the conversion completed.
Here is what I have:
(1) Homeshopcnc 850 oz/in at 72 volts with 4200 rpm at constant voltage
(2) 3/4 5TPI Rockford Ball screws
(3) I have 72 volt power supply.
I am trying to decide on the pulley ratios I should use for each axis. I am not sure how to make this decision. I know that 4200rpm and a ratio of 4:1 I should see ~~210 inch/minute linear motion with these balls crews. How can one analyze this situation.
What rpm should I use for calculation and what linear speed should I be trying for? Should all the axis be the same? What other factors should I be considering?
Thanks for your help.