Hello Guest it is May 11, 2021, 07:41:55 PM

Author Topic: Having difficulty with torch heigth set-up  (Read 2683 times)

0 Members and 1 Guest are viewing this topic.

Having difficulty with torch heigth set-up
« on: July 14, 2008, 01:05:52 PM »
Having torch height issues.  When I run a program, floating z axis moves down to surface, zero's and moves back to 2" rapid travel depth.  Goes to start of cut, sets to plunge depth, then transitions to cut depth.  However the floating z is .2" away from its stop - torch head is .2" too deep.  I have set the switch travel, pierce depth, and cut depth  in mach and the pierce height and cut height in sheetcam. Anybody have any thoughts as to what is happening here ?

Offline jimpinder

*
  •  1,232 1,232
  • Wakefield, West Yorks, UK
    • View Profile
Re: Having difficulty with torch heigth set-up
« Reply #1 on: July 14, 2008, 02:25:09 PM »
I have not the slightest idea - but is it that you have entered parameters in both Mach 3 and Sheetcam - and the two sets are working against each other.

I would have thought it was a bit like milling, or a lathe, either you enter all these parameters in your CAD/CAM program, which then writes the program to run the machine directly, or you write the program as you would draw it, and let Mach3 work out tool diameters and other offsets.
Not me driving the engine - I'm better looking.

Offline KTM

*
  •  92 92
    • View Profile
Re: Having difficulty with torch heigth set-up
« Reply #2 on: July 15, 2008, 01:44:14 AM »
Are you using plasma torch arc voltage, flame cut height sensing or z axis co-ordinates?

Post your G-code and I'll have a look.

Regards

KTM


Re: Having difficulty with torch heigth set-up
« Reply #3 on: July 15, 2008, 11:24:19 AM »
Here is the first part of the program I was using

G0 Z2.0
X8.4762 Y4.3641
Z0.25
G28.1 Z0.12
G92 Z0.0
G00 Z0.000
G92 Z2.00
G00 X8.4762 Y4.3641 Z0.25
M03
G04 P0.25
GO1 F120
X7.9968 Y5.2417 Z0.625 F100
G03 X7.9969 Y5.2417 I2.7551 J0.000
M05
G0 Z2.0

FYI - Sheetcam settings - pierce height 0.25, cut height 0.625
Mach settings - switch travel 0.2, pierce height 0.25, initial cut height 0.63

Is there a setting in the post processor that has to be changed for the switch offset in the floating Z ?

Offline KTM

*
  •  92 92
    • View Profile
Re: Having difficulty with torch heigth set-up
« Reply #4 on: July 16, 2008, 02:08:26 AM »
Home the Z axis
Go to motor config > homing/limits
Set up the G28 home location (add .2"?)

That should work!

Regards

KTM