I plan on using a 100W laser mounted on the CNC. To start off basic..I'm just going to have a fixed motor velocity. However, I think to be kind to the mechanics, I think I should include acceleration/deceleration motor control. It might be rough for a CNC tool head to race across a 8ft of table at full speed and instantly come to a screeching halt on target within
100 microns. Let's say I'm using positioning feedback (optical or magnetic encoders
Has anyone touched a nucleus? :) D from BC
I've opened my Root Chakra, and felt the Kundalini flow through me. Does that count? ;-)
Cheers! Rich
Take a look at what Baldor have to offer. Not exactly cheap, but in the low range as prices go for this sort of kit. They do RS485 interfaces, PCI servo cards, and a whole slew of motors, AC & DC from a few amps up to quite big stuff.
But what they happen to have at the time?
-- "Electricity is of two kinds, positive and negative. The difference is, I presume, that one comes a little more expensive, but is more durable; the other is a cheaper thing, but the moths get into it." (Stephen Leacock)
I guess so, but the delusion that timing doesn't matter seems to be more common amongst users of stepper motors.
Chris
Many many years ago i saw a list of interesting assembler opcodes like RMXG
-- randomize memory execute garbage
That's the electrons in your lunch. :) D from BC
Probably something like these:
The real problem is having enough memory for the 'convert to unary' instruction.
Jon
No, that was a real 6800 instruction.
SteelTailor portable CNC cutting machine More info:
That's cool :) Arrrrff! Arrrrfff! D from BC
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