Arrangement for controlling rock drilling

Details Arrangement for controlling rock drilling Arrangement for controlling rock drilling

2003-11-05

2010-02-02

Garbe, Stephen (Department: 3721)

Tool driving or impacting

Processes

C173S002000, C173S004000, C173S005000

Reexamination Certificate

active

07654337

ABSTRACT:
A method for controlling rock drilling and a rock drilling arrangement having at least one feed channel of a feed actuator provided with a restrictor, which causes a pressure drop if the penetration rate increases and, consequently, a flow through the restrictor increases. A pressure difference and an increase in the penetration rate can be detected by sensing the pressure before the restrictor and after the restrictor. When the feed rate increases, a hydraulic system is arranged to decrease percussion pressure.

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An Opposition issued by fax on Feb. 27, 2008 issued in European Application No. 03810474.1 (European Publication No. 1 558 836 ).

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