Messages

51

General Mach Discussion / Re: Disable/enable THC300

« on: June 03, 2009, 12:07:39 PM »

Hood,
I think I misunderstand something.
I mentioned anti dive is for inhibiting torch to dives, when is enabled. (but now it don't works well to me).
What I get if I switch it off?
I want to freeze complete THC function, so torch height will be the same all the time it cuts circle.
mrpeja

52

General Mach Discussion / Re: Disable/enable THC300

« on: June 03, 2009, 09:26:36 AM »

Hi Hood,
Yes, there is a button on the screen to turn THC on and off in Mach3.
The problem is I don't know how to write a macro. I only know OEM codes for this button and associated led.
Can you help me writting the macro?
mrpeja

53

General Mach Discussion / Disable/enable THC300

« on: June 01, 2009, 04:37:31 AM »

Hi,
I'm cutting holes about  2" diameter using arc lead-in and -out. Every time at the end of cut, it seems to me torch touches material. Anti dive is ON.
I think I can avoid this when I disable THC300 when I cut holes. I reference the torch before every cut, so I don't need THC function when I cut holes.
How to do this? And also enable again THC for other cuts.
mrpeja

54

General Mach Discussion / Re: Dwell after M05 (torch off)

« on: May 18, 2009, 08:53:53 AM »

Hi Jimpinder,
I opened M3 macro. It has only one line:
DoSpinStop()
How I can add G00 Z50?
It seems to me it is not so simple syntax
mrpeja

55

General Mach Discussion / Dwell after M05 (torch off)

« on: May 14, 2009, 02:12:49 PM »

Hi,
After  the cut I have set 10 seconds dwell needed for torch cooling. After this SheetCam inserts line like G00 Z50 (go to safe Z).
I need this two things swapped, e.g., first go to safe Z and then 10 sec cooling.
How to tell SheetCam to do this?
mrpeja

56

General Mach Discussion / Re: THC300 jumps up down

« on: May 11, 2009, 03:43:50 AM »

Hi Dave,
Now is better, but I'm not satisfied yet.
I set Z axis speed  and acceleration slower, testing a couple of times.
Also I changed resistor value in input divider circuit from 330 Ohm to 680 Ohm
I plan to reduce THC300 electronics reaction time, first to adding capacitor to input from sensor board, and if not satisfactory, to implement integrator circuit (I think).
mrpeja

57

General Mach Discussion / Floating head dives in to material

« on: May 06, 2009, 10:02:33 AM »

Hi,
When I cut a hole, (arc lead -in and -out) head touches material at the end of cut. I have Anti dive ON, Pierce height 5mm, Cut height 3mm  and Thc300  corrections Max=20mm and Min=-10 mm.
What is wrong?
Please advise
mrpeja

58

General Mach Discussion / Torch referencing

« on: May 04, 2009, 01:30:05 PM »

Hi,
I made G code file using THC300-G31 post processor.
I expected to see torch referencing before every hole (hole diameter 45 mm), like is stated in post processor abstract:
"The torch is referenced at cut start and every 500 mm of movement thereafter"
But I didn't see was I expected.
Instead, referencing occurs from time to time, and below is a sample of G code.
I want referencing before every cut, so, before every M03 macro
How to achieve this?
mrpeja

Code sample
N0120 (Process: Plasma,  0, Plasma, 2 mm kerf)
N0130 M06 T2  (Plasma, 2 mm kerf)
N0140 G00 Z50.0000
N0150 X1618.6000 Y726.4000
N0160 Z5.0000
N0170 G31 Z -100 F500.0
N0180 G92 Z0.0
N0190 G00 Z4.0000
N0200 G92 Z0.0
N0210 G00 X1618.6000 Y726.4000 Z5.0000
N0220 M03
N0230 G04 P0.5
N0240 G02 X1620.5676 Y726.0900 Z3.0000 I0.0000 J-6.4000 F1000.0
N0250 X1625.0000 Y720.0000 I-1.9676 J-6.0900 F960.0
N0260 M667 (THC on)
N0270 X1625.0000 Y720.0000 I-15.0000 J0.0000 F1500.0
N0280 M666 (THC off)
N0290 X1618.6000 Y713.6000 I-6.4000 J0.0000 F960.0
N0300 M05
N0310 G04 P15
N0320 G00 Z50.0000
N0330 X1418.6000 Y726.4000
N0340 Z5.0000
N0350 M03
N0360 G04 P0.5
N0370 G02 X1420.5676 Y726.0900 Z3.0000 I0.0000 J-6.4000 F1000.0
N0380 X1425.0000 Y720.0000 I-1.9676 J-6.0900 F960.0
N0390 M667 (THC on)
N0400 X1425.0000 Y720.0000 I-15.0000 J0.0000 F1500.0
N0410 M666 (THC off)
N0420 X1418.6000 Y713.6000 I-6.4000 J0.0000 F960.0
N0430 M05
N0440 G04 P15
N0450 G00 Z50.0000
N0460 Y526.4000
N0470 Z5.0000
N0480 M03
N0490 G04 P0.5
N0500 G02 X1420.5676 Y526.0900 Z3.0000 I0.0000 J-6.4000 F1000.0
N0510 X1425.0000 Y520.0000 I-1.9676 J-6.0900 F960.0
N0520 M667 (THC on)
N0530 X1425.0000 Y520.0000 I-15.0000 J0.0000 F1500.0
N0540 M666 (THC off)
N0550 X1418.6000 Y513.6000 I-6.4000 J0.0000 F960.0
N0560 M05
N0570 G04 P15
N0580 G00 Z50.0000
N0590 X1618.6000 Y526.4000
N0600 Z5.0000
N0610 G31 Z -100 F500.0
N0620 G92 Z0.0
N0630 G00 Z4.0000
N0640 G92 Z0.0
N0650 G00 X1618.6000 Y526.4000 Z5.0000
N0660 M03

59

General Mach Discussion / Re: Soft limits problem, still confused

« on: May 01, 2009, 02:11:58 AM »

Hi dwyersm,
Is solved my problem as follows. Please advise if this is what you mentioned.
First I home Z axis at top, to  switch connected in series with other axes.
On the beginning I inserted code snippet to find material surface and to zero Z axis work coordinate:
G31 Z-100 F500
G92 Z0.0
Then goes code for safe Z
G0 Z50
and etc.
Is this a way to ignore homing Z at the top of travel ?
Should I map the same input (probe) as input to home Z instead of common input for all axes?
mrpeja

60

General Mach Discussion / Re: Floating head switchoffset

« on: May 01, 2009, 01:53:01 AM »

Thanks Shene,
All advises I got was correct, but, my mistake, I didn't read enough carefully
mrpeja