Design of Cutting Tools for High Speed Milling

该项目将专注于开发新的刀具设计，以提高高速加工(HSM)的生产率。研究人员将研究一种新的方法，通过创建内部特征来增加工具体内的阻尼，该内部特征将在工具振动过程中通过摩擦来耗散能量。这些功能将被设计为利用在高速加工中使用的高主轴速度所经历的高向心加速，以显著增加由此产生的能量消耗。这种“离心式减振”将显著提高刀具的动态硬度，并直接提高HSM的生产率。研究人员还将调查刀刃在刀身上的形状和位置。以前在这方面的工作已经表明，不等间距的切割刃可以提高稳定性和提高生产率。本研究将在这项研究的基础上进行扩展，包括对起伏的刃口进行分析，并对结果进行实验验证。这项研究的最终结果将是加深对刀具在高速铣削中的作用的理解。我们将制定优化设计规则，并通过实验证明，通过智能设计高速加工铣刀可以提高生产率。研究小组预计，这些结果将迅速获得HSM用户的商业接受。

This project will focus on development of new cutting tool designs to allow increases in high speed machining (HSM) productivity. The researchers will investigate a new method of increasing the damping in the tool body through creation of internal features, which will dissipate energy through friction during tool vibration. These features will be designed to utilize the high centripetal accelerations experienced during the high spindle speeds used in HSM to dramatically increase the resulting energy dissipation. This "centrifugal damping" will provide significant increases in the dynamic stiffness of the tool, and result in direct productivity improvements in HSM. The researchers will also investigate the form and placement of the cutting edges on the tool body. Previous work in this area has shown that unequal spacing of the cutting edges can result in enhanced stability and improved productivity. This investigation will expand on this research to include analysis of undulating cutting edges, and experimentally verify the results. The final result of this research will be an increased understanding of the role of the cutting tool in high-speed milling. We will formulate optimal design rules and experimentally demonstrate the productivity increases achievable by intelligent design of milling cutters for HSM. The research team expects these results to gain rapid commercial acceptance by HSM users.