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EP0226537A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Rock drill bit

Assignee: Hilti AG
•
Filing: 1986-12-01
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Granted: —
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Expires: 2006-12-01
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Abstract

Abstract Translated from German Der aus Schaft (1) und Bohrkopf (2) bestehende Gesteinsbohrer ist an der in Vorschubrichtung weisenden Stirnseite (2a) des Bohrkopfes (2) mit einer Schneidplatte (5) sowie Schneidstif­ten (6, 7) versehen. Die Schneidstifte (6, 7) dienen zur Her­absetzung des Verschleisses der Schneidplatte und zur besse­ren Abstützung des Bohrers. Die Schneidstifte (6, 7) können teilweise parallel und teilweise geneigt zur Bohrerachse an­geordnet sein. Ihre freien Stirnenden liegen in der von den Schneiden der Schneidplatte (5) gebildeten Rotationsfläche. The rock drill consisting of shank (1) and drill head (2) is provided with a cutting plate (5) and cutting pins (6, 7) on the front side (2a) of the drill head (2) pointing in the direction of feed. The cutting pins (6, 7) serve to reduce the wear of the cutting plate and to better support the drill. The cutting pins (6, 7) can be arranged partially parallel and partially inclined to the drill axis. Their free ends lie in the rotation surface formed by the cutting edges of the cutting plate (5).

Inventors

  • 👤 Dieter Scholz
  • 👤 Friedrich Flesch

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 12:01
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/58; E21B10/44; E21B10/445; E21B10/56

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