An algorithm for tolerance cutter-location surface generation of measured data based on MLS method

Traditional offset method can not directly generate the cutter-location surface of measured data with defects. Thus, a tolerance method of cutter-location surface generation was proposed based on MLS fitness. Firstly, the measured data were transformed to a swelling ball model by the length of ball-end cutter's radius. Secondly, according to the geometric principle of convex hull, outer envelope data of this swelling ball model were acquired. Finally, local MLS projection fitting method was used to eliminate possible defects, and generated the final cutter location mesh surface. It is shown that this algorithm is able to generate cutter-location surface of measured data even they have defects, and also is suitable for the practical engineering applications for its high efficiency and accuracy.