Method of regulating the feed force of a drilling device
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United States of America Patent
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-
Apr 27, 2004
Grant Date -
Jun 19, 2003
app pub date -
Oct 2, 2002
filing date -
Oct 4, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a method of regulating the feed force of a drilling device having a hydrostatic bore hole motor at the end of a linkage provided with a rotary and a feed drive, the feed of the linkage is set as a function of the pressure of the drive fluid for the bore hole motor in such a way that the liquid pressure remains in a predefined range or else remains constant. If the bore hole motor is equipped with an eccentricity for directional boring, for example with an angled housing, then, in addition or else independently of the feed control, directional deviations normally resulting from the linkage torsion can be compensated for by the eccentricity or the linkage being set to a corrected path angle.
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