A Word about Speed.
High speed machining demands a high level of responsiveness
from the machine's motion system and axis motors, as well
as from the beam delivery system.
When machining the prifile below for example, the acceleration
of the machine tool in the linear axis may have more effect
on production efficiency than the machines' nominal feed rates.
The illustration compares machining of the same profile using
motion systems capable of 1 G and 0.5 G acceleration. Here,
doubling the acceleration cuts the cycle time in half.
Swiss Tec Micro Maschining Systems are equipped with linear
guides and motors only to ensure high feed rate and acceleration,
little wear and high accuracy of movement.
Another important factor with high speed machining is the power
with which the laser beam is cutting away on the material surface.
A swift movement on a long, straight line requires more energy
that a slower movement in a complex curve.
Here, regulating laser energy according to the actual speed
of movement reduces kerf width variance and potential damage
at the cutting edge (heat affected zone) of the work piece.
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