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CS-Lab / Re: PID Tuning, one axis perfect, the other causing a headache.
« on: July 21, 2016, 06:13:20 PM »
Sounds like you need to tune the drive/motor a bit better before attempting to tune the IP-A.
Hood
Hood
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You can do rigid tapping with a VFD and the CSMIO/IP-A OR ip-s if you have the Enc module.
I want to run the standard motor at the moment, but have high hopes of rigid tapping and VFD controlled spindle- maybe I should go the whole hog first up?
1: I am really familiar with Mach 3, but how far along is Mach4 now? With mach 3 I can even do probing and indexing hex stock on a 4th axis, how are the plugins coming along? I would like to use it as its so fast at doing things in comparison but I have so much invested in M3
2: Buy individual motors/power supplies/ drivers etc or get a kit off ebay/alibaba for about 1000 bucks for 1400oz+ steppers?Would look at AC servos rather than steppers, they would cost more but the performance difference is night and day.
3: Controller - I like the idea of CSMIO/KFLOP but never used them, for things like rigid tapping and indexing boring operations would I need this with a servo motor as a spindle and run it as an A axis etc? I have heard you can get servo motors with Step/Dir but how to achieve this will be mind**** without some serious help. -> Lookin at you Hood! I am happy to interpolate the threads with a thread cutter, but the machine is a gear head and I'll convert it to belt drive so I can run 6000rpm. Should I just do that and run with a CNC4PC controller or go the CSMIO
4: Ballscrews... 20mm is cheap, 25+ are crazy expensive. 20mm work ok?
5: This is the first time I'll be wiring this up from scratch, and I do have in my mind that I hated the homing and home switches on my last machine always being out. If I turned the machine off, re-homed it, it would always be a little bit different each time... is there any way to linear encode steppers or get really good home switches?If using servos and the CSMIO IP-S or IP-A then you can do Index homing which means your switches do not have to be deadly accurate as they are just being used for a trigger to tell the controller to seek the Index pulse of the encoder.