【作者】 赵巍；

【导师】 王可；

【作者基本信息】 沈阳工业大学 ， 机械电子工程， 2002， 硕士

【摘要】 三自由度无瞬心包络铣削螺旋曲面的加工方法无论在理论研究还是在实际应用方面都已取得了显著的成效，螺旋曲面(螺杆)也正以其独特的优点广泛应用于各个工业部门。然而随着螺杆应用范围的扩展，螺杆型线不断复杂化、多样化，三自由度无瞬心包络铣削法已不能满足部分型线的加工要求，为此本文在三自由度无瞬心包络铣削法的基础上，针对螺杆压缩机阴阳转子的特性，在国内首次提出四自由度无瞬心包络铣削螺旋曲面的新方法，赶超国际螺旋曲面加工技术水平，具有重要的理论和现实意义。 本文在对自由曲面、螺旋曲面的加工方法及步骤进行详细的研究和归纳总结的基础上，确定了采用四自由度无瞬心包络铣削方法求解螺杆压缩机阴阳转子加工刀具空间轨迹的方法和步骤。解决了如何由数据点拟合成光滑曲线、确定合理的步距点、找出干涉、排除干涉等一系列求解空间刀具轨迹的关键问题，并且运用VC++、Matlab语言实现了上述算法及仿真加工过程。 采用大刀尖角铣刀加工螺杆具有高效率，低成本的优点，但是在三自由度的机床上难以实现。所以本文还将四自由度无瞬心包络铣削法运用到求解大刀尖角铣刀加工螺杆的无干涉刀具轨迹中。 四自由度无瞬心包络铣削法扩展了目前三座标螺杆铣床的加工范围和加工性能。更多还原

【Abstract】 At present ,three-axial non-instaneous envelope me -thod had been made great achievement both theory and practice.Helical surface is being used widely in every s-ection of industry for its special characters.But with its variety and specialization , three-axial non-instaneous envelope method had not meet needs. So four-axial non -instaneous envelope method was set forth firstly in this article, which is based on three-axial non-instaneous envelope and spiral rod compressor rotator speciality.This method possesses important theory and practice meaning.In this article, the method and steps of milling rotators tool path was defined on the basis of research and summary on free-surface . spiral surface machining. How to form slick curve from data points, define reasonable machining points, find and exclude interference and so on are solved too in this article.Above arithmetic and simu- lation are realized through VC++ and Matlab language.This method is also used to solving tool-path to machine spiral rod with larger tool-angle possessing some characters, such as high efficiency,low cost and so on, whichcouldn’t be realized in three-axial machine.So four-axial non-instaneous envelop mehtod enl-arges the scope of three-axial machine and character.更多还原