| This thesis focuses on discussing the geometric model of high梥peed shearing machine structure and its parts. Some novel methods have been proposed, practiced and verified, and an product modeling experiment system have been developed. As a part of virtual product development concerning the shearing machine, the thesis gives optimized design program and optimized results aimed at cam mechanism driven system from the point of kinetics characteristic, and consequently ensures kinetics optimization of the shearing machine. The research of the thesis is very important in the aspect of theory and practice. The thesis is divided into six chapters in all. Chapter one gives a summary of the background in the research field and a brief introduction of this thesis. Chapter two introduces the concept of frame relation and framework, and establishes solid model of geometric shape by boundary representation, and next gives a framework representation mode for organizing topology information in experiment system. Chapter three discusses the types of shape elements and frame relations, and established its geometric model using delamination besom aimed at the workbench of the high梥peed shearing machine. Chapter four establishes the representation model of assembly structure of the shearing machine, and gives a product modeling experiment system. Chapter five carries out kinetics optimized design aimed at cain mechanism driven system of the high梥peed shearing machine, and prepared for realizing the whole structure optimization. Finally, chapter six is a conclusion of the research works. |