GOALI: Critical Technology Development for High Speed Spindles

该项目旨在建立普渡大学和精密公司之间的合作研究计划，以开发最先进的高速主轴技术。研究工作将集中于开发全面的分析和经验模型，以及开展混合陶瓷轴承新型高主轴的关键实验研究。这项研究将确定陶瓷轴承在动态和热特性以及耐用性方面的潜在好处。分析建模将包括润滑剂效应和全三维热膨胀，以及轴承几何形状、轴承材料、预载荷、预载荷方法、外部载荷、运行条件和主轴配置，以确定动态和热特性。将开发实验试验台，以确定混合陶瓷轴承在运行条件下的摩擦和温度特性。这项研究将为混合陶瓷轴承的有利应用建立速度-负荷区，从而为陶瓷轴承高速主轴提供充分的高速加工效益奠定科学技术基础。通过这项合作开发的分析建模工具和实验数据库将提供一个系统工具，帮助实现高速主轴的优化设计，以避免昂贵的机器发生代价高昂的故障。

This project aims at establishing a collaborative research program between Purdue University and Precise Corporation to develop state-of-the-art technologies for high- speed spindles. The research efforts will focus on developing comprehensive analytical and empirical models as well as conducting critical experimental studies for new high spindles with hybrid ceramic bearings. The study will determine the potential benefits of ceramic bearings in terms of dynamic and thermal characteristics as well as durability. Analytical modeling will include lubricant effects and fully three-dimensional thermal expansion in addition to bearing geometry, bearing material, preload, preloading method, external load, operating conditions and spindle shaft configuration to determine dynamic and thermal characteristics. Experimental test rigs will be developed to determine friction and temperature characteristics of hybrid ceramic bearings under operating conditions. The research will establish speed-load regions for advantageous application of hybrid ceramic bearings, and thus will lead to the establishment of a scientific and technological basis for high speed spindles with ceramic bearings that can provide full benefits of high speed machining. The analytical modeling tool and experimental database to be developed from this joint effort will provide a systematic tool to help achieve optimal design of high speed spindles to avoid a costly failure of expensive machines.