Part profile input method

Abstract

The invention relates to a part profile input method for inputting the profile elements of a part using arrow keys. When inputting a part profile, an angle (A.sub.i) defined by two mutually adjacent profile elements (EL.sub.i, EL.sub.i+1) is computed, and whether the corner is in outside corner or an inside corner is determined by comparing the angle of intersection and a set angle. In case of an outside corner, a preset chamfer dimension (DIM) is displayed. If the dimension is acceptable, an input key is pressed to input the chamfer profile (CF) at the corner portion. In case of an inner corner, a prompt display is presented inquiring whether a rounded profile is to be inserted. If insertion is required, a dimension is inputted and the input key is pressed to input the rounded profile.

Dependencies are inferred from the claim text.