WORK-PIECE PROCESSING METHOD AND WORK-PIECE PROCESSING DEVICE

PROBLEM TO BE SOLVED: To provide a work-piece processing device and a work-piece processing method which can cut the whole cutting surface with high accuracy without generating a joint on the cutting surface, by using a processor having a general B-axis rotation mechanism or a processor mounted with a unit equivalent to the mechanism.SOLUTION: An angle of one side of a cutting chip is aligned with an angle of an inner surface of one flange part of a work-piece, and then an end part at one side of a cutting blade of the cutting chip is made contact with a processing start point in the vicinity of the one flange part of the work-piece. While moving the cutting chip from the one flange part side to the other flange part side, an angle of the other side of the cutting chip is aligned with an angle of an inner surface of the other flange part of the work-piece. A processing surface of the work-piece is cut with the cutting blade of the cutting chip, and an end part near the other side of the cutting blade of the cutting chip is made contact with a processing finishing point in the vicinity of the other flange part of the work-piece, in a state where the angle of the other side of the cutting chip is aligned with the angle of the inner surface of the other flange part of the work-piece.SELECTED DRAWING: Figure 1 【課題】一般的なＢ軸の回転機構を持った加工機、もしくはそれに準ずるユニットを搭載した加工機を用いて、切削面に繋ぎ目を発生させず、しかも、切削面全体を高精度に切削加工できるワーク加工装置及びワーク加工方法を提供する。【解決手段】切削用チップの一方の側辺の角度をワークの一方の鍔部の内面の角度に合わせた後、ワークの一方の鍔部近傍の加工開始点に切削用チップの切削刃の一方の側辺側の端部を接触させる。切削用チップを一方の鍔部側から他方の鍔部側へ移動させながら、切削用チップの他方の側辺の角度をワークの他方の鍔部の内面の角度に合わせていく。切削用チップの切削刃でワークの加工面を切削し、ワークの他方の鍔部近傍の加工終了点では、切削用チップの他方の側辺の角度とワークの他方の鍔部の内面の角度とが合っている状態で、切削用チップの切削刃の他方の側辺側の端部が接触している。【選択図】図１