Re: [CAD_CAM_EDM_DRO] Re: Lincoln - non high frequency

Thursday, January 9, 2003, 8:04:34 AM, you wrote:

>> Hi guys,
>> I think this is on topic since it involves the issue of using the
>> cutter on CNC platforms without interference. I'd like to hear the
>> comments if you dont mind keeping it online.
>> Thanks,
>> Lee
>>

ffpp> If made another contact with Lincoln and it seems that no interference
ffpp> is done with Lincoln plasma. The other person that replay to the
ffpp> initial thread says the same, but he is not using the plasma in a CNC
ffpp> system.
This is from the Lincoln manual::::

Plasma arc initiation occurs as follows: First, in the idle state, a spring
inside the torch head pushes the piston and electrode forward to make continuity
with the nozzle. When the trigger is pulled, air flow begins and creates enough
back force on the electrode to overcome the force of the spring. However, the
solenoid valve allows enough forward force on the piston to maintain continuity
between the consumables. After this continuity has been verified, output current
is established and regulated. Once the current stabilizes, the solenoid valve
turns off, removing the forward force on the piston. The back pressure drives
the piston and electrode away from the nozzle, creating the plasma arc. The air
stream forces the arc out of the orifice of the nozzle. This appears as a pilot
arc, which can then be transferred for cutting..



--
Best regards,
Larry mailto:lvanduyn@...