Design of Cutting Tools for High Speed Milling

高速铣削刀具设计

• 批准号: 0000009
• 负责人: John Ziegert
• 金额: $ 28万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-06-15 至 2004-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0000009&HistoricalAwards=false
• 关键词: Design; Cutting; Tools; Speed; Milling

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.

该项目将专注于开发新的切削刀具设计，以提高高速加工（HSM）的生产率。 研究人员将研究一种通过创建内部特征来增加工具主体阻尼的新方法，该内部特征将在工具振动期间通过摩擦耗散能量。 这些特征将被设计成利用高速加工中使用的高主轴速度期间经历的高向心加速度来显著增加所产生的能量耗散。 这种“离心阻尼”将显著增加刀具的动态刚度，并直接提高高速切削的生产率。 研究人员还将研究刀具主体上切削刃的形式和位置。 该领域的先前工作已经表明，不相等的切削刃间距可以导致增强的稳定性和提高的生产率。 这项调查将扩大这项研究，包括分析起伏的切削刃，并通过实验验证的结果。 这项研究的最终结果将是增加对高速铣削中刀具作用的理解。 我们将制定最佳的设计规则，并通过实验证明可实现的生产率提高智能设计的铣刀高速加工。 研究团队预计这些结果将迅速获得HSM用户的商业认可。