ROCK DRILL

The invention relates to a rock drill comprising an insertion portion, a flute adjoined to the insertion portion, and a head portion adjoined to the flute, wherein the flute is of at least double-spiral configuration and correspondingly has at least two substantially spiral discharge grooves, to whi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	LAMPE, Rainer
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BORING DRESSING OR CONDITIONING OF ABRADING SURFACES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS FIXED CONSTRUCTIONS GRINDING MACHINE TOOLS MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING METAL-WORKING NOT OTHERWISE PROVIDED FOR MILLING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORMING OPERATIONS POLISHING TRANSPORTING TURNING WORKING CEMENT, CLAY, OR STONE WORKING STONE OR STONE-LIKE MATERIALS
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Beschreibung
Zusammenfassung:	The invention relates to a rock drill comprising an insertion portion, a flute adjoined to the insertion portion, and a head portion adjoined to the flute, wherein the flute is of at least double-spiral configuration and correspondingly has at least two substantially spiral discharge grooves, to which respectively two substantially spiral flute webs forming the lateral groove walls are assigned. It is proposed that a constant spiral pitch is assigned to the first discharge groove, inclusive of the lateral groove walls thereof, along the drill longitudinal axis, and that at least one of the two flute webs assigned to the first discharge groove has or have along the drill longitudinal axis, at least in sections, a web spine width which changes, in particular, alternately.