Industry/University Cooperative Research Center for Dimen- sional Measurement and Control in Manufacturing - Machine- Tool Chatter Prevention Through Spindle Speed Variation

该奖项为密歇根大学制造业尺寸测量与控制工业/大学合作研究中心和伊利诺伊大学厄巴纳-香槟分校机床系统工业/大学合作研究中心之间的“TIE”项目提供资金。颤振限制了加工效率，影响了表面质量。它还会造成工件尺寸精度的损失，加速过早失效的切削失效。提出的研究是利用主轴转速变化（SSV）方法研究过程行为并建立控制颤振的模型。在这项工作中，伊利诺伊大学厄巴纳-香槟分校将研究可变主轴转速轨迹参数与加工条件动态响应之间的关系，并制定基于稳态振动水平的转速选择准则。密歇根大学将开发和验证颤振模型，使用微分-微分方程来抑制主轴转速变化带来的颤振。这将是一个为期两年的共同努力。本研究旨在结合各个方案的各自优势，整合现有技术，以合作的方式开发新的工具和方法，解决颤振抑制中的关键问题。

EEC-9526519 Ni This award provides funding for a "TIE" project between the Industry/University Cooperative Research Center for Dimensional Measurement and Control in Manufacturing at the University of Michigan and the Industry/University Cooperative Research Center for Machine-Tool Systems at the University of Illinois at Urbana- Champaign. Chatter limits the machining productivity and affects the surface quality. It also causes loss of dimensional accuracy of the workpiece and accelerates the premature failure cutting failure. The proposed research is to investigate the process behavior and develop models to control chatters by using the Spindle Speed Variation (SSV) method. In the proposed work, the University of Illinois at Urbana - Champaign will investigate the relationships among the variable spindle speed trajectory parameters and the dynamics response of the machining condition, and develop the speed selection criterion based on the steady state vibration level. The University of Michigan will develop and validate chatter model using a difference-differential equation to suppress chatter via spindle speed variation. This will be a two-year joint effort. This research aims to combine the individual strengths of each program, integrated existing technologies, and develop new tools and methods in a cooperative manner to solve critical problems in chatter suppression.