The precision spindle is an essential component of the engraving system.
It is floating and processed by a brush-free servo motor. Using the floating mechanism, along
with a sensor that registers the positioning of the tool onto the glass, we are saved the trouble
of a time-consuming Z-contour programming for the glass to be engraved. Instead, the tool rests on
the glass with a constant mass and follows the surface contour automatically. The intensity of
engraving is regulated by the spindle frequency relative to the current speed on the engraving pattern.
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