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Messages - Tony Bullard

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161
General Mach Discussion / Re: Tube/pipe coping or notching
« on: November 01, 2010, 07:21:40 AM »

Thanks for the info TP. I would have no idea of how to write a WIZZARD. Sounds like a good Idea. I'm going to be away for a few weeks and will check back to see how you're coming with your frontend macro. I have no idea of how that works either. I'd be interested in understanding that process. There's a few more things I need to add to my program like which side of the run pipe to offest the branch pipe. That could be function of which direction the "A" turns.

more later,
Tony




162
General Mach Discussion / Re: Tube/pipe coping or notching
« on: October 31, 2010, 04:17:24 PM »
Hi TP, I wrote this program years ago in Quick Basic to print out wraparound temples. I’ve since modified it to write scripts to read into AutoCAD for printing and now it writes G code to a file. It’s still in QB and I’m working on getting it into a VB stand alone program. The problem with the feed rate is it should be in surface units per minute. The Y is in inches/min and the A I assume is in revs per minute. Apples and oranges. I’m just dry running it in Mach but a 2” pipe and a 6” pipe both take about the same time to run with the same feed rate. Humm. I’ll attach some files. See what you think.

Tony


163
General Mach Discussion / Re: Tube/pipe coping or notching
« on: October 31, 2010, 02:35:23 PM »
"YOu would set the parameters such as

P1Diam
P2diam
Angle
Offset
Thickness

Then as the gcode file ran it calculates each point on the fly and does the move to the next point.

Mach does parametric Gcode VERY well.  Mixed VB gcode??? NOT so well(;-)

(;-) TP
 
I'm working on a VB program that writes G Code from the parameters above. The output looks like this.
G01A 123 y6.456
G01A 124 y6.789
the A is in degrees and they Y in inches. One problem-- how is the feed rate controlled? Also, How do you address the rotary axis? In degrees? Also you can't mirror the quadrents unless the pipes are at 90*and then not if the pipes aren't on the same center line.
 

164
General Mach Discussion / Re: Relay for TTL signals?
« on: October 25, 2010, 07:46:10 AM »

Thanks DaOne, The opto isolator and the logic gates are over my head. I’ll have to get some help with that. Another thought I had was to take the direction signal and the “move” (before it gets to the pulse generator) signal from the height control and somehow inputting them into Mach to control the Z while in THC. I don’t know if a ModBus or something could handle the speed. I don’t think macros could.

165
General Mach Discussion / Re: Relay for TTL signals?
« on: October 24, 2010, 02:45:39 PM »

Good question Stirling. One thought I had was to have an adjustable Z+ limit switch which would be set to a safe distance above the work for movements between cuts and after returning to Mach go to that limit and reference Z or “SetSafeZ”. These would be macro calls. The torch is a floating head with a Z- limit switch. I thought I’d use that to establish torch height along with some code to set a pierce height. Any thought would be a help. Any schematics for the logic gates would also be helpful. Not my strong point.

Tony

166
General Mach Discussion / Relay for TTL signals?
« on: October 24, 2010, 10:08:47 AM »
I’m switching my plasma machine software to Mach3. I have a stand alone torch height controller that sends 5V TTL step and direction pulses to my driver while the torch is active. I’m using a cheep Radio Shack double pole double through relay to switch the Z signals between software and height controller. It appears to be working fine. Is there a better relay for TTL switching or is some kind of solid state switching better? And if so could you send me the info. Thanks for any help.

Tony


167
Thanks Hood,

I'll buy it and give it a try.
Tony

168
Thanks,
I'll get the hang of this someday

169
I guess I'm running out of gas. Where can I find the changeLog file? Is there a way to check for updates to the Mach3 program? I can't seem to find either on March3 Home site.

170
Thanks again Hood, I wonder if there is a way I could be notified of any changes.
Tony

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