SELF-DRILLING DOWEL WITH AN INCLINED DRILLING HEAD

A self-drilling dowel consists of a tubular-shaped member with a drilling head at one end. The drilling head is formed of a plurality of teeth each having a tip. The tip of the teeth are all disposed in a single plane inclined at an angle in the range of 4.degree. to 9.degree. to the axis of the tub...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	ENTNER, JOSEF
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A self-drilling dowel consists of a tubular-shaped member with a drilling head at one end. The drilling head is formed of a plurality of teeth each having a tip. The tip of the teeth are all disposed in a single plane inclined at an angle in the range of 4.degree. to 9.degree. to the axis of the tubular-shaped member. The teeth are formed by a cutter with its center located at an offset position from the axis of the tubular-shaped member. The feed line of the cutter extending through its centre can be parallel to the axis of the tubular-shaped member or it can be set angularly to the axis of the tubular-shaped member in the range of 4.degree. to 9.degree. or 81.degree. to 86.degree. depending on whether the cutter is moved generally in the axial direction or transversely to the axial direction of the tubular-shaped member.