Messages

21

Show"N"Tell ( What you have made with your CNC machine.) / What i didn't make with my cnc machine

« on: February 12, 2010, 11:47:29 AM »

Perhaps a good idea for the disaster tourists among us...

come forward and don't be ashamed...

here's my latets one

Already made some adaptors for the 45W servo motor from cncdrive with the sherline and thought i'd give the last one on the stepperdrive...

http://www.youtube.com/watch?v=9nygwBmlYIo

forgot to tighten the bolt from the morse cone...

hahahahah

22

Mach SDK plugin questions and answers. / Re: How to check for a break of movement (ESC)

« on: February 02, 2010, 08:28:58 AM »

I have an other issue... yet again... :-P

Want to add a counter to the escape button which goes up everytime the button is pressed...

sounds easy using brains and stuff but how do i get the "esc" button press in brain control?

Cheers

23

General Mach Discussion / Re: Jerking with short segment G-code

« on: February 02, 2010, 06:11:17 AM »

found the "problem"

if you make a short segmented g-code with G1's the knife will get in the right angle BEFORE the movement takes place.
thus jerking it's way through the code.

made some nice long G2 and G3's and all goes perfect!

cheers

24

General Mach Discussion / Re: Jerking with short segment G-code

« on: January 22, 2010, 06:05:09 AM »

tried the G64 but nothing...
Then tried to program it by hand... when only 3 axis are driven there's no problem, when the fourth (A) kicks in the jerking starts...

anyone?

25

General Mach Discussion / Re: Jerking with short segment G-code

« on: January 22, 2010, 04:03:19 AM »

so, turn off tangential and just put G64 in the header?

26

General Mach Discussion / Jerking with short segment G-code

« on: January 20, 2010, 05:17:30 AM »

Dear all

Have read all the topics about this and haven't come across the solution for my app.

Let me give you an idea about what i'm willing to accomplish:

I'm about to apply a coating on a round surface using the tangential option in Mach3.
I output the G-code using VX cadcam. because this to-be-coated surface has complex upper contours it appears that VX cannot output G2 or G3 segments (allthough it all looks like its round)
The resulting code is cut in to about 1mm pieces.

Problems so far

Without "tangential" turned on I get a rather smooth run apart from some bumps here and there...
When I turn on "Tangential" the whole Machine starts to shake like it's dancing the samba!

checked speeds and accelerations, all set to a high enough value... according to all the topics i read everything should be OK.

any ideas?

i'll add the example code for reference...

The XML will be for later on when i get the chance to download it.

27

General Mach Discussion / Re: mach 3 and servos do you gain any accuracy

« on: January 20, 2010, 05:06:05 AM »

i think even with very little play or flex you'll get a mark where the tool enters...
if you'd stop the tool on the contour with the spindle still activated you'll also get a mark

just a matter of the mill "rubbing" against the surface on that one spot for several depths thus leaving a mark

correct?

28

General Mach Discussion / Re: mach 3 and servos do you gain any accuracy

« on: January 20, 2010, 03:08:08 AM »

I think i may have a case of under driving it maybe, i have kept them low in order to not loose steps .i have 960 oz rs stepper motors with v203 geckos for drivers the problem is when cutting in profiling i get the the cutter moving into the part when it plunges on each pass leaving a line on the part that is unacceptable down the side of the part.The rest of the part will be fine .Can not figure this one out?

this is not due to your motors but just a fact (anyway we have the same "problem")
solving this would need a lead-in/lead-out

29

VB and the development of wizards / Re: Who wrote the probing routines for the Tormach PCNC1100?

« on: January 20, 2010, 03:05:09 AM »

Don't know what is wrong

But i've had the same thing happen to me... one time probe upwards, the other time probe downwards... same code, same button script...

30

Brains Development / Re: Detecting Fwd and reverse of Axis

« on: December 18, 2009, 05:47:44 AM »

same here.

is there a way to actually use the status of the Cdir pin in brains?

would come in handy for me...