Rotary percussion drill

Details Rotary percussion drill Rotary percussion drill

1996-08-15

1998-03-24

Hail, III, Joseph J.

Tool driving or impacting

Impacting devices

With means for rotating tool

173 90, 173114, B23B 4516, B25D 1110

Patent

active

057302308

ABSTRACT:
A rotary percussion drill for mining, rock drilling and similar operations is provided. The drill combines a rotation portion with a percussion portion to impart a simultaneous rotational and reciprocating percussive action to the drill steel or other working element. The frequency of the percussive impact can be varied to drill efficiently rock of different hardness by changing the cross-sectional cam configuration of a camshaft which activates a reciprocating piston imparting percussive action to the drill steel or other working element.

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