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Workpiece Levelling Unit

Electronic workpiece levelling unit
Electronic workpiece levelling unit for levelling material tolerances (here mounted left of the spindle).

This electronic measuring device levels inequalities on the workpiece surface. The controller calculates the height profile and lifts respectively lowers the z-axis accordingly so that the immersion depth will be consistent everywhere on the workpiece.

This unit is especially useful for engraving acrylic which has a tolerance in the material thickness of about 10 %. Engravings without a height levelling often become uneven due to the differing immersion depth of conic tools.

The workpiece levelling unit finds a remedy here by three-dimensionally levelling out the immersion depth of the carbide tool according to the surface condition. So the use of this unit leads to even engravings.

The disadvantages of a mechanical height adjustment (scratches on the surface of damageable workpieces) do not occur with this electronic solution. Furthermore you can use it on all kinds of materials because the surface will be measured by a precision measuring key.

This also works on reflecting or transparent materials where an optical workpiece levelling may get into trouble.

Technical data

  • precision measuring key, accuracy: ± 0.01 mm
  • levels inequalities on the workpiece surface
  • software definable number of measuring points in x and y direction
  • calculation of height profile by controller
  • no damaging of sensitive workpieces due to pointwise measurement
  • combinable with all spindles

Functional principle

Without workpiece levelling
Without workpiece levelling – A fixed dipping depth leads in case of an uneven surface of the material to the effect that at elevated points, the graver dips too deep into the workpiece while at lower points, the workpiece will not even be touched any more.
With workpiece levelling
With workpiece levelling – The height profile that has been measured prior to the machining process makes sure that the z axis will be appropriately lifted and lowered and thus at all points of the workpiece a consistent dipping depth is ensured.