American Flyer wrote:
Paul,
Attached is the serial port info you needed. Sorry it took a while,
I'm just getting used to a new scanner. By the way, I said you
needed 14 amps to drive the motors. That's 14 amps per motor. They
are 1.5hp motors. I don't know what kind of info you got with
your Kasuga. I think you mentioned that you didn't get manuals.
In case you don't already know, they are rated 300 inches per minute
with 0.0002" resolution. Bed is rated for 500 pounds.
Mark,
That G2003 sounds like the right tool for the job! It sounds nearly
identical in function to the system I am just in the process of
designing. The USB port and buffering will of course eliminate any
Windows timing problems. You said it is 6-axis. Does that include
the 80v 20a motor drivers for all six axis, or would you need to
add G320s for each axis? We would still need to either add shaft
encoders or use a resolver to encoder conversion circuit. Analog
devices has an excellent chip for that job. It is a single PLCC
package which requires no additional parts, and it's outputs
emulate a 1024 line quadrature encoder (12 bit total resolution).
Harrison Young
Thanks Harrison. Glad to hear about the AD single chip resolver to
encoder conversion. The thought of changing the resolvers was a little
off putting.
Paul Lamar
Mark Wrathall wrote:
300 IPM! This will have you well puckered up. Realistically, for the sort
of one off, short run stuff you will be doing you won't be running this
machine at anything like those speeds, the time saved is simply not worth
the added danger. At least initially.
I might be doing some high density foam.... mold or pattern stuff Mark and
the high speed might come in handy as foam is much easier to cut then aluminum.
According to the guy that replaced the servo amps the spindle runs at
up to 7000 RPM. PL
There are plenty of guys running this kind of hardware off Gecko's. Yes the
70V 20A [1.87 HP] will not give you the full speed of the machine, but if you really
want that 300 IPM then the Rutex drives will deliver up to 200V 40A.
The G2003 is really interesting. Marriss has come up with a new alogrythm
for the constant velocity conturing which they are patenting. It is a look
back method. You can read all about it in the achives of the geckodrive
group. I think Mariss is the only one who understands it really.
It is six axis and outputs opto isolated step and direction at up to 250Khz,
so yes you then connect up Geckos or Rutex etc. It also has a unch of other
I/O so you should have enough I/O to cover pretty much any normal machine
tool.
1024 line encoder is 4096 steps per rev right? You will be pushing the
frequency of the LPT with this. TurboCNC V4 might be okay. Otherwise you
will need G340' so you can set the microstepping down from 1/10 to 1/5 or
so.
Regards,
Mark
I guess another questions is. Will any of this software/hardware support a Fadal
add on tool changer?
Paul Lamar
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