Also...for a mill this size...what components would you recommend....
This is a big mill. 11" x 58" table, and 1200# table capacity. It weighs 4000#+
Ball screws? Nook Industries? Others? 1" x .2? 1.25" x .2?
Elrod Machine for a new more rigid Yoke and Z-Axis Kit?
The Fagor 8055 turnkey kit uses Glentek servos and drives. I have heard BAD things. I don't want to use the Fagor high end drives and Servos...as that will cost a bloody fortune. No need for that performance (zero following error, etc) on a conventional CNC mill.
What would be a good middle of the road servo/drive combo. Baldor? I am thinking of sticking with Brushless DC to keep the cost down.
For the X and Y travel...I probably need a pretty good sized motor. 1.2-1.5 HP....? Z axis on quill could be less as there are no inertial issues on the quill.
I could do all the math on the table weight, accelerations..cutting forces...but it is easier just to get advice from those who already know.
Also, with servos mounted direct to ball screws (no pulleys)...will I have a problem getting the right RPM rating on the servos? With .2 pitch...3000 RPM would result in a 600 ipm rapid. That seems kind of fast. I doubt 1.5 HP servos could actually get that big table moving that fast.... Are there any Servos in that HP range that are rated for less RPM?
Again, thanks in advance for your suggestions....