Messages

1

General Mach Discussion / Re: newbie on macros...M3 dwell

« on: November 12, 2009, 07:34:59 AM »

Thanks a lot tweakie!! It makes sense now...i´ll give it a try, my only concern is on the gcode, because it is written automatically, some times with more than 50,000 lines!! gotta figure a way to the change M3/M5 to M10/M11...

2

General Mach Discussion / Re: newbie on macros...M3 dwell

« on: November 12, 2009, 05:47:30 AM »

Gee, the guy from the other post was quite rude...though have same name and almost same problem...it aint me! hehe...About the M10/M11...its hard for me to understand how to get it done! Well, the gcode is generated from a dxf file through lazycam, which sets M3/M5 according to the path (thats how i understand it). So what i suppose to do? Tell mach to performe M10 when it reads a M3? What M10/M11 actually does? turns on/off the flood? I think i have to set at ports and pins the new output signal that controls the laser (M10 instead of M3)...is it right? Sh**t, i´m so dumb on this mather....many thanks!!!

3

General Mach Discussion / Re: newbie on macros...M3 dwell

« on: November 11, 2009, 08:43:21 AM »

I´ve tried that too...tried with 0, 0.00001, negative numbers...nothing worked! I think its more like a communication problem, because a laser signal is just on/off, but to run the servomotors, it deals with acceleration, positioning through encoder...that takes more time to process (my guess)...i think that dwell on the M3 will work...i just dont know how to do it!!

Thanks again!

4

General Mach Discussion / newbie on macros...M3 dwell

« on: November 11, 2009, 07:00:01 AM »

Hello experts on Mach!I have a problem i think can be solves with macros, but since i´m completely dumb on macro, I dont even know how to start. Here´s the thing: I´m running mach 3 on a laser cutting/marking machine for non-metalic material (wood,leather,acrylic, and so on) and every time the laser turns on to start a cut (M3), the axis moviments kinda dwells for about 0.5 seconds before following the path. As the laser beam is held for a while in a spot, this widens the cut, so theres always a hole where the cut starts. I´ve tried all sorts of menu configurations, hardware and tried also by Gcode, all useless. My thought was to make a dwell between the M3 code reading and the effective M3 activation of the laser. Theres any way that i can tell mach to hold for a while before sending the M3 signal to the hardware?

Many thanks for your kind support, sorry about the bad english....

Arturo Pugliesi
Brazil.

5

G-Code, CAD, and CAM discussions / Re: importing dxf file and setting feed rate - Problem

« on: June 18, 2009, 07:44:17 AM »

Thanks for the answer...i tried, but with no success...for now i´m just writing a close feed, and ajusting through the feedrate override.

thanks anyway.

AP.

6

G-Code, CAD, and CAM discussions / importing dxf file and setting feed rate - Problem

« on: June 17, 2009, 10:45:49 AM »

Hi everybody! I´m new around, since i just fishined building my laser cutting machine. I use it to cut mdf, acrylic, leather and alike, must of them arts, fonts, and signs made in Corel-Draw. Corel can provide me the file as dxf, and i´m using the dxf importer that comes with mach3 (no lazycam), to convert to g-code. Now here's the inconvenient, i set the feed rate through the option "Layer Control" and specify the feed for the layer in use, this way, everytime the program writes a line of M3 (turning on the laser), it writes the feed chosen right above, like F1000.
That´s a big problem cause i use to cut several materials with different feeds, but i can change the feed since it´s writen in the program. Sure i can open the program as txt and erase the Fs along the lines, but most of time i have a 50,000 lines program with more than 2,000 M3s!
I tried to put the feed as zero in the layer control, but it appears yet feed as 1  (F1)

Any chance that i can solve this problem?  

Thanks a lot to the experts.

Regards,

Arturo.