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Messages - kf2qd

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General Mach Discussion / Re: Can I convert to Mach 3
« on: July 19, 2010, 03:39:45 PM »
Do you have any electrical diagrams? What would be important is the pinouts and description for the parallel cable. Also - can you look at any of the existing configuration information - especially port and pin info and steps per inch or millimeter. As long as it uses stepper motors and step/direction type control all it should require is a computer that will run Mach3 and a parallel port.

If you can document the signals at the parallel port mach 3 should be no problem.

Sieg Machines / Seig X3 configured in INCHES.
« on: July 19, 2010, 03:33:13 PM »
While this is frowned on by those in the Seig Support forum -
I am more comfortable working with a machine that is configured for INCH and so I re-configured my KX3 so that it was default INCH. I kept the original XML files so that I can run it in "factory" mode, but I have had no occasion to run it that way since I created my new configuration.

I made a new config that I call KX3 Inch and under Motor Tuning I made the following changes -

Select Native units = Inch

Steps Per = 12,700 ( I played with this and came up with 12776.66 when comparing to an indicator, 12700 should work)
Velocity = 100 (will work with my setup at 120)
Acceleration = 20
Step Pulse = 6

Mr Stephenson gave me a bunch of grief about making this change and how the machine wouldn't work, but all that I did was scale the numbers they were using for steps per MM and changed it to Steps per inch.

You may be seeing some effects from the number of parts between the signal and the cutter. you might ought to look into some servos that can be driven directly from MACH witout the need for intermediate hardware.

I have used steppers and servos with one ot the rutex boards and the servo did not perform to my expectations. On the other hand I have used Yaskakwa servos in pulse/direction mode and Omron SmartStep (pulse/direction only) from 30 watts through 800 watts and found them to be very relaible. Aren't cheap, but they are very relaible.

You might also look at you drive tuning and deadband. If the drive needs to see a few steps before it responds you are going to get poor results. Is the drive system as tight as possible? Is there any lost motion in any axis that might be causing you some grief?

General Mach Discussion / Re: ORIENTAL MOTORS-ALPHASTEP
« on: June 17, 2010, 04:23:59 PM »
What's the problem?

Sieg Machines / Re: New to Mach3 just got a Sieg!!!
« on: June 10, 2010, 01:36:06 PM »
The circle problem - If this is a Seig built machine I would think that both axis should have the same ballscrews, and thus the Steps Per for each axis should be the same.
you can look this up  using the menu at the top Config/Motor Tuning. On the right side of that screen select each axis and see what the numbers look like.

An elipse would imply that the Steps per is not correct for 1 axis.

Which axis of the elipse is the correct size? and on size measurement are you accounting for the cutter diameter? A 2" circle cut with a 1/4 mill will measure 1 3/4 on an OD and 1 1/4 on an ID as the 2" diameter is the centerline of the cutter unless you are using G41/42

You can check each axis with an indicator to see how much they are actually moving or compare them to a scale over a longer move.

General Mach Discussion / Re: need a macropump
« on: June 10, 2010, 01:24:16 PM »
I would say that this is a situation where you are trying to bandaid an electro/mechanical problem. If you are losing position then you need to look at that problem because it will probably get worse.

OR - Home at the start of every cycle. This would mean on a cycle start you would retract to a home position and then do your motion.

Sieg Machines / Re: New to Mach3 just got a Sieg!!!
« on: June 09, 2010, 02:04:44 PM »
Okay -
  To start off can you jog the machine using the arrow keys (HINT - make sure the NUM LOCK is off fore the key pad keys to work as jog keys)

  You can get some other options for the Jog keys by tapping the TAB key and selecting step or continous jogs.

   Machine may start up configured in metric - don't know what units you are used to... It is easy to change a few numbers and have the machine totally in imperial units.

   If it moves smoothly when jogging then you have most of the config working. if it doesn't seems to be moving smootly (it will hum/growl while it moves, that's the steppers) you might amke sure that the stepp- Pulse setting in the config/motor tuning has a 5 in it. If that number is too small it causes problems, depending on your parallel port.

  I redid the Jog keys as they wer configured as if the spindle was moving and I find it easier to have the jog keys point the way the table is moving.

   If you hit a limit the machine only jogs in slow speed after you clear the E-Stop until you get off the limit and let go of the jog key.

Where are you located? might be someone in the area who could give you a hand.

Sieg Machines / Re: Welcome to the Sieg Machines forum
« on: June 08, 2010, 06:25:26 PM »
Im having trouble configuring the machine to mach3 someone please help

That is a rather vague question... Would be glad to help but you must first tell us what problem you are having (what is or isn't working/moving) which machine you have and such. Give us some information to work with and you have a better chance of getting some help.

Sieg Machines / Re: New to Mach3 just got a Sieg!!!
« on: June 08, 2010, 06:22:20 PM »
Don't understand quite what the problem is but - You might want to go to the Seig site - http://www.smallcncsupport.com/ - and make sure you have the latest XML files. There was a problem with some of the "early" ones.  I have modified those config files because it was easier for me to think in imperial units (inches) and the folks over on the Seig site think that the machine has to be configured in millimeters. I started from their XML's and have had no problem. When the machine is sitting idle there is a bit of a hiss that you will hear. That is normal. The drives should sound like an angry bumblebee when moving and that sound will change in intensity as the machine varies in speed. Running patterns with lots of circles are almost musical.

Which machine did you get - the KX1 or the KX3? I have the KX3 running with a max feedrate of 100 inches / minute. I could go faster - 120 "/min, but I really see no real benefit at this point.

General Mach Discussion / Re: Polygon Turning
« on: June 08, 2010, 05:09:23 PM »
If you are running the servos in stepper mode you may be able to adjust the counts per revolution settings and synchonize them that way. They come setup for either 2000 or 4000 steps per rev and you cn play with the ratio for each drive to come up with what ever ratio you might want. All it would require is a pulse source.

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