摘要
利用包络理论，将水电站金属蜗壳曲面视为变径球面族的包络面，导出金属蜗壳曲面的理论方程．在此基础上，进行金属蜗壳计算机辅助几何设计，并根据某工程实例数据，将曲面实际值与理论值进行比较，同时，实现金属蜗壳曲面的视图、剖视图的计算机自动绘制．
The surface equation of metallic spiral casing was obtained by applying the enveloping surface theory. And base on this, the.computer aided geometry design was studied.Finally, a general computer program about drawing the parametric lines and various views ofthe spiral casing surface were developed.
出处
《武汉水利电力大学学报》
CSCD
1995年第1期34-39,共6页
Engineering Journal of Wuhan University
关键词
水轮机
金属蜗壳
CAD
包络面
computer graphies
metallic spiral casing
enveloping surface
