| 摘要 |
<p>This invention relates to a pick feed method in rotary member profiling which rotates a model (MDL), moves back and forth a stylus (ST) kept in contact with the model in a direction of the centre of rotation (OM) of the model in accordance with the model shape, and pick-feeds the stylus within a plane parallel to the model rotation axis whenever the model rotates once, so as to make profile control. During this pick-feeding, the entire periphery of the model is devided into two sections by a line (LL') connecting a point (PL) having a predetermined rotary angle ( theta L) and the center of rotation (OM) of the model so as to form first and second areas (AI, AII). When the stylus (ST) is rotated relative to the model (MDL) by rotary member profiling control, judgement is made in which areas the stylus exists and pick-feeding is not carried out when the stylus has entered the second area (AII) from the first area (AI), while pick-feeding is executed when the stylus has entered the first area from the second area.</p> |
