(57) Disclosed herein is a method of designing a roller cone bit, comprising the steps
of:
a) adjusting the orientation of at least one row of teeth on a cone, in dependence
on an expected trajectory of said tooth through formation material at the cutting
face;
b) calculating the width of uncut rings of formation material, in dependence on the
orientation of said row of teeth, and adjusting the position of said row of teeth
in dependence on said calculated width; and
c) recalculating the rotational speed of said cone, if the position of said row is
changed, and accordingly recalculating said trajectory of teeth in said row.
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