|
The machine requires 5 axes to control it. Axis 1 is the cross or X axis, this moves the machine head
right and left, when viewed from the front. Axis 2 is the long or Y axis; this moves the gantry forwards
and backwards. Axis 3 is a Z axis; this moves the torch head assembly up and down. Axis 4 is an automatic
torch height controlling axis, this maintains a constant distance from
the torch tip to the metal, automatically controlled by the AMC4 , ensuring good
cut quality on non flat materials. Axis 5 is a rotating axis which orients the plasma torch so that it is
always perpendicular to the rectangular tube being cut.
Integrating the automatic torch
height control within the AMC4 gives a number
of distinct advantages over separate self contained torch height control systems. These include: lower
overall cost, controlling the rate of torch lifts and drops based on the cutting speed.
The machine is driven by 4 servo motors and 1 stepper motor. The drives
for these motors are integrated within the small AMC4 enclosure.
The AMC4 controller is mounted on the machine gantry, it moves with the Y
axis along the 8ft of machine travel. Mounting the controller on the gantry greatly reduces
system cabling, increasing reliability.
|
