Method for producing rotationally symmetrical, non cylindrical bores using a honing tool

Method for making a cylindrical bore into a conical bore using a honing tool, wherein the honing tool comprises honing stones, the length of each of which is less than one third the length of the bore to be processed, comprising the steps of:

• applying the honing stones of the honing tool to the bore,
• honing the bore over its entire length with a maximum stroke (HMax=OP1−UP), wherein OP1 is an upper reversal point and UP is a lower reversal point,
• honing the bore with decreasing stroke, wherein a lower reversal point of the honing tool remains substantially unchanged, until a predefined end value for an upper reversal point is reached or a number of desired strokes with decreasing stroke is reached, wherein the maximum stroke is more than thrice the length of the minimum stroke.