Design of a milling cutter for a novel three-lobe arc-cycloidal helical rotor
Design of a milling cutter for a novel three-lobe arc-cycloidal helical rotor
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DOI：
10.1243/0954406042369071
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发表时间：
2004-10
期刊：
影响因子：
--
通讯作者：
L. Yao;Z. Ye;H. Cai;J. Dai
中科院分区：
文献类型：
--
作者：
L. Yao;Z. Ye;H. Cai;J. Dai
摘要：设计了一种加工罗茨风机圆弧摆线螺旋转子的铣刀。铣刀是在罗茨鼓风机的一种新型转子的基础上开发的，该转子由凹弧和凸弧组成，横截面上有摆线曲线。对该转子的横截面和螺旋齿形进行了几何分析。揭示了刀具与待加工转子毛坯的接触特性，导出了三种不同齿段的法向量。进一步推导了铣刀与转子毛坯共轭运动的接触线方程，提出了铣刀的设计方法。然后对加工过程中的干涉进行了研究，并给出了数值结果。分析结果表明，所研制的刀具在加工过程中无干涉。最后对所研制的刀具在加工新型三叶圆弧摆线螺旋转子中的应用进行了验证。
Abstract This paper focuses on the design of a milling cutter for machining the arc-cycloidal helical rotor of a Roots blower. The milling cutter is developed on the basis of a novel rotor of a Roots blower which consists of both concave and convex arcs and a cycloidal curve in the transversal section. The geometric analysis of the transverse section and the helical tooth profile for the proposed rotor are presented. The paper reveals the contact characteristics between the cutter and the rotor blank being machined and derives the normal vectors of three different tooth sections. The paper further develops equations of the contact line for the conjugate motion of the cutter and the rotor blank and presents a design methodology of the milling cutter. The interference in the machining process is then investigated and numerical results are produced. The results from the analysis demonstrate that there is no interference in the machining using the developed cutter. The developed cutter is then demonstrated in the end of this paper in machining the novel arc-cycloidal helical rotor with three lobes.