Messages

131

General Mach Discussion / Rigid tapping with servo spindle

« on: November 19, 2008, 02:15:15 PM »

Hello Guys,
Just wondering if this is at all possible with mach3?

I was kind of thinking it may be possible if we treated the spindle (servo) as a separate rotational axis it could be done.

Just a thought
imagine you have a theoretical 1 turn per inch tap, and you wanted to tap a 1" deep hole, and the tap is 1" above the surface of the hole.

If you change your spindle to be A axis, and make it rotational.

Then you could code something like this:
F10 (tapping feed rate)
G01 X-1 C720 (this will move the z axis two inches down and turn the spindle 720 degrees or two turns)
G01 X1 C-720 (this will move the x axis two inches up and turn the spindle 720 degrees or two turns in the other direction)

I think this might be a way of being able to rigid tap with a servoed spindle.

Any thoughts?
regards
Fernando

132

General Mach Discussion / Re: Anyone using Mach3 for Water jet cutting.

« on: November 12, 2008, 04:04:40 PM »

Hello Jim,

as far as i am concerned the g40 g41 and g42 are not fully functional, i might be wrong (if i am, someone will correct me) they might work sometimes but you have to define the tool diameter in the tool tables.

I may suggest you use a CAM software to generate your g-codes, any decent cam package will automatically compensate for the diameter or Kerf. I can suggest sheetcam, its a decent package for profile cutting and its only about 150dlls.

In the any decent cam program you can enter de kerf width of yout tool (waterjet in this case) and then post process the geometry and the resulting gcode will be offsetted.

Please tell us more about your machine, there are not many waterjet retrofits out there.
I would love to learn more!

Regards
Fernando

133

General Mach Discussion / Re: Control the Z axis when a program is running.

« on: November 09, 2008, 08:16:13 AM »

Hi,
I beleive you might find what you need in this thread.
http://www.machsupport.com/forum/index.php/topic,6987.0.html

Best Regards
Fernando

134

General Mach Discussion / Re: In constant velocity mode but seems like exact stop!

« on: November 05, 2008, 06:45:14 AM »

Try turning down the acceleration.

You might have it so high, that the accel and deccel time are to short that it seems like exact stop.

regards
Fernando

135

Tangent Corner / Re: Hiwin single axis robots

« on: November 04, 2008, 06:05:40 AM »

Hello Rich,
20 feet

planning on using normal rails and rack and pinion on that axis.

The single axis robots would be used in the 12inch and 6 inch axes.
I see they can take quite a load,
Its just that for the size and configuration of the unit, is hard to beleive that they can take that much
here is the loading table:
Best Regards
Fernando

136

Tangent Corner / Hiwin single axis robots

« on: November 03, 2008, 07:11:24 PM »

hello guys,
Has anyone ever worked with the single axis robots from HIwin?

Im wondering if they are stiff enough. Im planning on using them to make a 20ft x 12" x6" milling machine... to machine long steel parts...
wondering if they are stiff enough for the 12 and 6 inch axes, to machine steel, even if i have to take 1/16" or 1/32" passes.

Best regards
Fernando

137

General Mach Discussion / Re: Max distance parallel printer cable

« on: October 30, 2008, 03:18:17 PM »

Hey Whacko, fast response...
I think the way to go would be differential, I'll look into the Sipex driver,
Im only thinking about 30meters max, and that is pushing it.

Regards
Fernando

138

General Mach Discussion / Re: Max distance parallel printer cable

« on: October 30, 2008, 01:58:49 PM »

Hey Wacko,
Long time for this thread to revive...

How can I use LONG paralel port cables?

Regards
Fernando

139

General Mach Discussion / Re: Height Following

« on: October 28, 2008, 01:59:28 PM »

Hey Flipz,

Not really, im still in the designing stages of the machine, and was just investigating the way i could (in the future) implement this.

Long way ahead since i think i am starting with plasma, and then go with the waterjet which is for what i need it.

Regards
Fernando

140

Brains Development / Re: Update DRO from Modbus

« on: October 28, 2008, 07:52:53 AM »

Hello
Try adding a:

SLEEP 100

between the

While getUserLed(1200)
Wend             'wait here for the "tablet.brn" to see I've pressed the button on the tablet

To get

While getUserLed(1200)
SLEEP 100
Wend             'wait here for the "tablet.brn" to see I've pressed the button on the tablet

When you have a loop like that, mach makes MANY cycles and uses a lot of resources, adding the sleep command, slows down this cycle as to not lock up your computer.

What version of mach are you using, If you are using the latest version, then just adding that line would do, Art added the declaration of the sleep command internally, if you are using older versions of mach, then you would have to declare it with this at the beginning of your code:

Declare Sub Sleep Lib "Kernel32" (ByVal dwMilliseconds As Long)

Hope that gets you going
Fernando