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Abstract：
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Skew rolling of spiral hole is a new kind of manufacturing technology, in which rotational parts are formed It has many virtues such as high productivity, high utilization ratio, high quality For the deformation during rolling is complex and special, it can only be used in manufacturing simple parts now According to the character of process the work piece has non round area during the course, and the non round area is an important parameter in roller designing, which influences the appearing of the voids and cracks inside the part and dimensional accuracy of the part The geometry model of the roller and workpiece is established according their geometrical relation, and the formulas of calculating workpiece' angular velocity, the angular, and the non round area are obtained
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Funds：
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国家自然科学基金资助项目 (50 0 350 1 0 )
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AuthorIntro：
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Reference：
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1 胡正寰,许协和,沙德元.斜轧与楔横轧—原理、工艺及设备.北京:冶金工业出版社,1985.
2 高改梨.斜轧球辊形曲面理论及智能CAD/CAM系统开发.[博士学位论文].北京:北京科技大学,1997.
3 王宝雨,胡正寰.板式楔横轧轧件成形过程几何模拟.钢铁,1999,34(10):27～31
4 王宝雨,胡正寰.板式楔横轧接触面几何分析.北京科技大学学报,1995,17(1):64～67
5 《数学手册》编写组.数学手册.北京:高等教育出版社,1979.
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