mach 1 cnc problem

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milgo - 30 Oct 2004 22:58 GMT

I am hoping someone here has experience of this program. I have setup m
taig mill with a xylotex board and 3 240oz/in steppers. All the motor
are tuned and correct pins selected in mach 1. I am able to manuall
jog, but when it comes to running some code the mill doesnt move.
have been trying deskproto, exported the .iso file, which I then loade
in mach 1. When I run it, it displays the lines being scrolled throug
and the DRO readouts change, but all I hear is the motors whirring an
the spindles twitching. Sometimes it gets started but then the motor
lockup because the feedrate seems too high. Does anyone have an
suggestions? Cheers

--
milg

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Michael Buchholz - 31 Oct 2004 00:44 GMT

"milgo" <milgo.1eypgb@rcgroups.com> schrieb:

> I am hoping someone here has experience of this program. I have setup my
> taig mill with a xylotex board and 3 240oz/in steppers. All the motors
[quoted text clipped - 6 lines]
> lockup because the feedrate seems too high. Does anyone have any
> suggestions? Cheers.

Hi!

Sorry, I use PCNC (demo @ http://www.lewetz.de/30000_content.htm),
so i have no expirience with mach1, but it looks like a common
problem...

Do You have a config-option for something called 'Accellerating Ramp'
or similar?

Stepper can't turn full speed in an instant, and breaking is a problem,
too. Maybe there ist a option for 'Start/Stop-Speed' also, defineing
the speed the steppers CAN revv up to in a Blink...

You should start setting the first to maybe 1 rotation (eg. 400Steps
for a 200steps/rev Motor in half-Step-Mode) and the latter to 1 rpm
or the equivalent in mm/s.

If the problem is solved, You cane fine-tune by reducing th first
and increasing the latter Value until Steps are getting lost...
(and then some back ;-)

Hth, Michael.

P.S.:I'm not a native speaker, so excuse me for using some strange
words ;-)

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milgo - 31 Oct 2004 10:07 GMT

Michael Buchholz Wrote:

> "milgo" <milgo.1eypgb@rcgroups.com> schrieb:
> > I am hoping someone here has experience of this program. I have setu
[quoted text clipped - 41 lines]
> P.S.:I'm not a native speaker, so excuse me for using some strange
> words ;-)

There are ramping options, you can have ramping or exact stop mode an
I have it on ramping. I have found a setting called feed over-ride, i
the help file it sasy if set too high it can cause the motors to spi
faster than they should, which looks like the problem.

I also have another question :) When I tune the motors, should they b
at a specific value in the steps per unit section?

Airy R. Bean, I believe they are run directly from my pc. I will have
look into that as well :)

Thanks for the help

--
milg

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Airy R. Bean - 31 Oct 2004 03:12 GMT

Are the stepper motors being driven by the PC directly,
or is there an intermediate microprocessor?

If by the PC directly, then you may need to set a minimum
step time of the order of 1 millisecond.

> I am hoping someone here has experience of this program. I have setup my
> taig mill with a xylotex board and 3 240oz/in steppers. All the motors
[quoted text clipped - 12 lines]
> milgo's Profile: http://www.rcgroups.com/forums/member.php?action=getinfo&userid=32997
> View this thread: http://www.rcgroups.com/forums/showthread.php?threadid=292914

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Kevin Steele - 31 Oct 2004 10:55 GMT

Try asking here

http://groups.yahoo.com/group/mach1mach2cnc/

someone there will be sure to know the answer.

Regards

Kevin

>I am hoping someone here has experience of this program. I have setup my
>taig mill with a xylotex board and 3 240oz/in steppers. All the motors
[quoted text clipped - 6 lines]
>lockup because the feedrate seems too high. Does anyone have any
>suggestions? Cheers.

Reply to this Message

milgo - 31 Oct 2004 12:03 GMT

I found the problem, it was infact with deskproto. I went into th
milling machine options and noticed it had down 30mm/min travel. S
obviously the motors were just moving really slowly! Once I bumped i
up the machine was working well

--
milg

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Model Forum / General / Models / October 2004

mach 1 cnc problem