Menetelmä ja laitteisto syväporausten muotoon vaikuttamiseksi

摘要

PCT No. PCT/EP95/03389 Sec. 371 Date May 27, 1997 Sec. 102(e) Date May 27, 1997 PCT Filed Aug. 28, 1995 PCT Pub. No. WO96/06701 PCT Pub. Date Mar. 7, 1996For influencing the run of a deep hole drilled passage in a metallic or non-metallic material a pusher pad (6) variable in strength and position is interposed between the drill rod (2) driving the drill tool (1) or the drill tool (1) itself and the inner wall of the drilled passage so that it causes a bending of the drill rod such that the drill tool assumes a changed run. The variation in the position and/or thickness of the pusher pad (6) can be fed back to the sensing of the corresponding position of the drill tool (1) and controlled by the results of sensing.