ROCK DRILLING TOOL

The masonry drill bit with spiral cutting edges has main (8) and ancillary cutting edges (13) to form the groove (7) for material removal. The edges defining the groove are of different diameters (d1) and/or have different edge back widths (h1,h8). One or more material removal grooves are divided in...

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Bibliographische Detailangaben
Hauptverfasser:	WAGEGG, THOMAS, MOSER, BERNHARD, FUSS, MATHIAS
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	The masonry drill bit with spiral cutting edges has main (8) and ancillary cutting edges (13) to form the groove (7) for material removal. The edges defining the groove are of different diameters (d1) and/or have different edge back widths (h1,h8). One or more material removal grooves are divided into sections along the spiral path (5), each with a surface (11) to carry the powder waste.