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General Mach Discussion / Re: Motion controllers - Take me to school
« on: August 30, 2017, 02:03:13 PM »
All great points. It may not be worth the cost and certainly the Sherline platform is limited as to how hard you can push it. the advantages of AC servos with my thinking is speed, not cut speed, but speed regarding approach, plunge, and transfer all with improved resolution. This can dramatically improve run times. If I push steppers to fast they loose steps and sometimes not move at all... the dreaded ZZZZZ sound. Another advantage is to use the external hardware drivers which I know steppers have as well but steppers are just noisy and don't like to be pushed very fast, at least open loop anyway. Using driver boards seems to be the way to go for more modern computer options.
I also want to say more torque is not what I am after. All you need is enough torque to handle the maximum cut you would ever make anything more is overkill. More torque means more broken tools. There has been a few times my steppers stalled when taking to aggressive of a cut saving my endmill from breaking. Not so much the smaller endmills though.
I appreciate all the information and shared opinions. I will need to think about all this and see what is the best option for me personally.
I also want to say more torque is not what I am after. All you need is enough torque to handle the maximum cut you would ever make anything more is overkill. More torque means more broken tools. There has been a few times my steppers stalled when taking to aggressive of a cut saving my endmill from breaking. Not so much the smaller endmills though.
I appreciate all the information and shared opinions. I will need to think about all this and see what is the best option for me personally.