I dont know if there is any ramp in plasma mode !
I have found the ramp command but i will not work as a ramp command after the ignition. i want it to move from the lead in start position against the cutting start position with variable x+y speed and variable z speed with the tourch burning
My problem is that after init. height with floating head g31 command comes piercing (m3) command and i want two things
Var 1. A lifting command that lift up the head about 4 mm after ignition and then lowering it again rapid with variable settings for each m3 command in the g code
Var 2 A ramp command with variable setting for plasma mode
Ramp mode ramps from pierce height to cut height. If you have your pierce height set to less than the cut height you won’t see any ramping.
Var 1. A lifting command that lift up the head about 4 mm after ignition and then lowering it again rapid with variable settings for each m3 command in the g code
That is pretty much what should happen with a normal pierce. It will go from rapid height to pierce height, turn on the torch then move to cut height before starting to cut.
Ok ! but i want it to be like this…
1 rapid move to lead in piercing pos. for example 5 mm from start cutting position
2 Z Lowering the torch head to piercing height maybe 7 mm or something like that (because it have to be close to material for contact)
3 ignition
4 Z Variable speed to something like 15 or 20 mm when the torch burning
5 wait command (if the material i very thick)
6 Z Var speed lowering torch to cutting height
7 Start cutting and move towards the cutting start point
8 Cut…
This is the most used way to piercing thick material with plasma
I have tried to make a snippet but i need it with every piercing in 15 mm or more
I have write a simple g code and test piercing with it and it works great but a need a simple way to do it because it could be 100 piercing.
Maybe i could modify postprocessor and use it for 15 and 20 mm material
Thanks for a good program.
Bought it from Anders with translation… SWEDEN
Mats
That sounds very similar to the gas cutting cycle. Try using a flame tool instead of a plasma tool and setting the preheat to a small value like 0.01 seconds.
I tried to use flame but flame mode is not lowering z first and then go up with the torch burning and then down again very rapid depend of material thickness.
I must be close to the material first for ignition.
I am now trying to modify post processor and use setting from flame mode for z axis
For example use preheat setting value for z rise because it would be nice to adjust it easy from sheetcam meny but with no luck yet.
Is it possible to turn on and of thc from sheetcam
I have always use Postprocessor thc301d g31
using floating head
I read that plasma MP1000-TH do that ?
Wich g code will do that in mach3?
By default Mach hasn’t got any G-codes to turn THC on and off. I believe you can create custom M codes to do this.