非一様Bスプライン表現による五軸制御加工用曲線補間CLデータ生成(機械要素,潤滑,工作,生産管理など)

概要

論文の詳細を見る
Most of CAD systems can treat free form curves and surfaces in the mathematical formula called NURBS (Non Uniform Rational B Spline). Some NC controllers can handle NC data written in NURBS interpolated formula by using G 06.2 code. The use of NURBS expression enables us to decrease the amount of NC data, to eliminate the error due to the linear interpolation and to get rid of rapid acceleration and deceleration. However, little CAM systems can create NURBS interpolated NC data for 5 axis controlled machine tools. Therefore, the paper deals with the development of the main processor of CAM system, which creates CL data expressed by six dimensional Non Uniform B-Spline curve. The main processor can generate the CL data directly from CAD modeling data, while considering the interference between a ball end mill and a workpiece and keeping the designated tool posture as long as possible so that the machined surfaces can be smooth.
2006-07-25