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水轮机蜗壳分节环形变角度焊接坡口面的数学模型

A Mathematical Model for the Changeable Angle of a Grooved Face in a Spiral Case′ Sectionalization

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【作者】 符彦惟

【Author】 FU Yan-wei (Department of Computer Science and Engineering, Jiangsu Institute of Petrochemical Technology, Changzhou 213016,China)

【机构】 江苏石油化工学院计算机科学与工程系!江苏常州213016

【摘要】 目前 ,大型水轮机金属焊接蜗壳各分节大多采用按各分节平面展开线轮廓进行数控切割加工。但各分节间的环焊缝都是分段切割为定角度坡口面 ,这样形成的环焊缝实际焊接坡口角是变角度的 ,这不符合最佳焊接工艺要求。为了实现等角度环焊缝坡口面切割 ,就其推导出数控切割的数学模型

【Abstract】 At present, each sectionalization of large-scale spiral case is produced by NC cutting according to the outstretched plane of the curve of the sectionalization.But annular welding seam between the sectionalizations is cut at the fixed angle of a welding grooved face.The welding grooved angle formed in this method is changed.It does not fit in the demand of the best welding echnology. In order to cut at the equal angle of the welding grooved face of annular welding seam , a mathematical model is derived for numerical control of cutting devices.

【关键词】 水轮机蜗壳环形焊缝坡口面切割数学模型
【Key words】 spiral caseannularwelding seamgroovescuttingsmathematical model
  • 【文献出处】 江苏石油化工学院学报 ,JOURNAL OF JIANGSU INSTITUTE OF PETROCHEMICAL TECHNOLOGY , 编辑部邮箱 ,2000年03期
  • 【分类号】TK730
  • 【下载频次】32
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