开式三元叶轮高效率数控粗加工策略Study of High Efficiency Machining Strategy in Open 3D Impeller’s Roughing Process摘要：论述了五轴数控粗加工的高效铣削策略和关键技术，对于影响数控粗加工效率的主要因素进行了分析，对于高速钢铣刀和硬质合金铣刀采用侧铣和插铣数控加工方法以及刀具选择进行了简要叙述，并且通过大量三元叶轮实际加工总结了一种面向三元叶轮加工特征、考虑刀具寿命的粗加工策略的原则，使三元叶轮的加工效率大大提高。关键词：三元叶轮;高效;粗加工中图分类号： 文献标志码：文章编号：1006-8155（2012）01-0000-00Abstract: This paper discussed the high efficiency machining strategy and the key technology of roughing process on 5 axis machining center based on the geometrical structure of 3D impeller. Analyzed the main factors that effect the machining efficiency and described the flank milling with high speed steel cutting tool and plunge milling with carbide cutting tool as well as the selection of cutting tool. Pointe out the principal factors that influent the efficiency and how to avoid it. Drew a 11122制造工艺conclusion of machining principle based on large quantity of 3D impeller machining experience to acquire high efficiency and large economic benefit. Key Words: 3D Impeller High Efficiency Roughing Process 0 引言随着离心压缩机、鼓风机技术的不断提高，作为其“心脏”部件的三元叶轮制造越来越多，为了适应对三元叶轮的高精度、短周期、低成本的要求，如何提高三元叶轮的数控加工效率成为一个亟待解决的问题。三元叶轮铣前为整个毛坯料，粗加工的目的在于快速去除大部分材料余量，以提高生产率，同时为后序加工创造条件，目前在三元叶轮加工中80％左右的时间花在粗加工上，因此从缩短交货期和降低生产成本方面，粗加工已经成为重要加工阶段。经过多年的生产实践研究总结了一整套高效数控粗加工方案，本文就方案的关键技术加以简述。1 三元叶轮高效数控粗加工方法和关键技术1.1 三元叶轮的几何构造离心压缩机、鼓风机三元叶轮一般叶片形式分为直纹面和自由曲面。直纹面是由一条直线连续运动所生成的曲面，它...
