DRILLED HOLE PRECISION CORRECTING METHOD AND DRILLED HOLE PRECISION CORRECTING DEVICE

摘要

PROBLEM TO BE SOLVED: To simply make a correction even when the line connecting the shaft centers of the tip sections of a plurality of drilling shafts is dislocated in parallel to the virtual line connecting the shaft centers of the drilling shafts at the normal position as a whole.;SOLUTION: The drilling shaft at one side end section is decelerated as a first turn center of the whole drilling shafts, and the drilling shafts other than that at the turn center are turned in the turning direction of the whole drilling shafts, with the drilling shaft at one side end section serving as the first turn center, so that the drilling shaft at the other side end section is directed to the virtual line side connecting the shaft centers of the drilling shafts at the normal position as a first correction. The drilling shaft at the other side end section is decelerated as a second turn center of the whole drilling shafts, and the drilling shafts other than that at the turn center are turned in the turning direction of the whole drilling shafts, with drilling shaft at the other side end section serving as the second turn center, so that the drilling shaft at one side end section is directed to the virtual line side connecting the shaft centers of the drilling shafts at the normal position as a second correction.;COPYRIGHT: (C)2002,JPO