MARKING-SYSTEMS 36 PAUL-ROELTGEN-STRASSE 10 · D-42699 SOLINGEN · TELEPHONE: +49 212 / 33 99-0 · FAX: +49 212 / 33 99 11 · WWW.ROELTGEN.DE · INFO@ROELTGEN.DE DOT MARKING TOOL FOR CNC MACHINES Group 1930 ... Gravostar, dot marking tool for use in CNC machines Function description: dot marking Unlike engraving, dot marking does not remove any material from the workpiece but rather involves slight material compression at individual points. This is applied by the vertical vibrating movement of the marking needle. All functional elements of the impulse control are integrated into the marking head. When the air supply or internal cooling system is turned on, the needle will start to vibrate at a frequency of 300 Hz/second. Due to the high vibration frequency, the individual marking dots are very close to each other, such that they cannot be told apart from one another. This produces a depressed marked line. CNC machine requirements: machine software: possible programmes for the marking contour tool holder: clamp or collet holder, 20 mm Ø, VDI 25, VDI 30, (alternative holders on request) compressed air drive: constant pressure, approx. 4 – 8 bar (gravostar HV-20 / H-20) coolant drive: tool internal cooling, approx. 5 – 50 bar (W-20 / WS-20), coolant: water or oil Subject to change. 05-14 aluminium housing for automatic gear boxes CrNi Steel, marking onto the radius w/o height correction housing made of spheroidal cast iron: marking onto raw cast surface Marking sample
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