Re: Servo or sterpper motors. on small mill?
Posted by
paultitchener
on 2007-03-23 10:06:32 UTC
I think this point below, from a link listed by a previous poster is
an important one that sometimes people miss-
"1) Dynamic response, accelerate faster when starting and stopping,
and changing direction."
Its not quite as simple as saying that servos will have faster
rapids, they also will be able to do cut workpieces that require
quick changes in cutting direction more quickly.
I have steppers on my BP sized mill, and its been a great machine for
me. However, sometimes the stepper limitations slow me down, last
time was when I was engraving a prototype case. When engraving you
want to run as much RPM as you can, 5600 in my case, and at that RPM
you'd like to be able to feed at 10 to 20 ipm. However with my
steppers there was way too much rounding of the corners of the text I
was engraving, and I had to slow down to 5 ipm or so to get rid of
the excess rounding.
I didn't start from scratch with this machine, I bought it with the
motors in place and a blown controller, but if I was starting from
scratch I'd go the servo route, not just for faster rapids but also
for faster cutting without accuracy loss.
Paul T.
an important one that sometimes people miss-
"1) Dynamic response, accelerate faster when starting and stopping,
and changing direction."
Its not quite as simple as saying that servos will have faster
rapids, they also will be able to do cut workpieces that require
quick changes in cutting direction more quickly.
I have steppers on my BP sized mill, and its been a great machine for
me. However, sometimes the stepper limitations slow me down, last
time was when I was engraving a prototype case. When engraving you
want to run as much RPM as you can, 5600 in my case, and at that RPM
you'd like to be able to feed at 10 to 20 ipm. However with my
steppers there was way too much rounding of the corners of the text I
was engraving, and I had to slow down to 5 ipm or so to get rid of
the excess rounding.
I didn't start from scratch with this machine, I bought it with the
motors in place and a blown controller, but if I was starting from
scratch I'd go the servo route, not just for faster rapids but also
for faster cutting without accuracy loss.
Paul T.
Discussion Thread
subsailer326
2007-03-22 14:42:26 UTC
Servo or sterpper motors. on small mill?
turbulatordude
2007-03-22 19:12:29 UTC
Re: Servo or sterpper motors. on small mill?
Leslie Newell
2007-03-23 02:38:17 UTC
Re: [CAD_CAM_EDM_DRO] Re: Servo or sterpper motors. on small mill?
Fred Smith
2007-03-23 05:11:10 UTC
Re: Servo or sterpper motors. on small mill?
Philip Burman
2007-03-23 05:27:27 UTC
Re: Servo or sterpper motors. on small mill?
R Rogers
2007-03-23 07:20:00 UTC
Re: [CAD_CAM_EDM_DRO] Re: Servo or sterpper motors. on small mill?
paultitchener
2007-03-23 10:06:32 UTC
Re: Servo or sterpper motors. on small mill?
Ken Campbell
2007-03-23 10:50:41 UTC
Re: [CAD_CAM_EDM_DRO] Re: Servo or sterpper motors. on small mill?
ballendo
2007-03-23 14:26:43 UTC
Re: Servo or sterpper motors. on small mill?
ballendo
2007-03-23 14:30:05 UTC
Re: Servo or sterpper motors. on small mill?
ballendo
2007-03-23 14:41:19 UTC
Re: Servo or sterpper motors. on small mill?
turbulatordude
2007-03-24 04:37:58 UTC
Re: Servo or sterpper motors. on small mill?
Fred Smith
2007-03-24 08:09:00 UTC
Re: Servo or sterpper motors. on small mill?