An algorithm for efficiently recognizing and suppressing blend features is present.

Blend feature recognition and suppression is one important portion of CAD model simplification technology, and is an indispensable step to achieve the seamless integration of CAD/CAE/CAM.

This dissertation researches the semantic blend feature from two aspects, theory and system design.

Generating Blending Surface Based on Physical Energy Minimization;

The Research of N-sided Surface and the Generation of Blending Surface Basing on Finite Element Mesh;

This paper presented two methods for NURBS surface extension, and combining with the characteristics of MPF, the blank holder blending surface system of Multi-Point Forming was designed.

Aiming at unidentity between theoretical research and practical processing, this paper, also at the first time, proposes the concept of cutting transition surface of the wormgear by hob, and correspondingly, establishes the conditions under which the solution of the turning point problem can be worked out.

Vector equations of the tooth bearing and transition curved surface at dedendum are derived for Gleason spiral bevel gears by SGM and solved by Newton s iterative method with relevant computer program provided so as to implement the curve emulation of tooth shape.

The method presented in this paper for NURBS surface blending, can process the surfaces with variant continuity (C0,C1,C2).