SBIR Phase II: Chatter Avoidance Software for High Speed Milling

这个小型企业创新研究（SBIR）第二阶段项目将集成一种新型的、廉价的工具动态测量设备和通用分析程序，该程序将优化高速加工中心作为常规车间实践的使用。高速加工常常受到颤振条件的限制。这些条件取决于系统动力学和切削条件。待开发的产品将提供集成的硬件/软件解决方案，以帮助用户选择最佳主轴速度和刀具深度，而无需专家或专业设备的干预。该产品将处理一般的刀具几何形状，刀具路径和过程中的零件几何形状，并与工业级NC验证程序一起工作。该计划将特别提供在低刀具浸入（轻切削）条件下的建议，通常用于避免硬质材料中的刀具磨损。新的研究方向包括：(1)瞬态条件下颤振的研究；(2)雕刻表面零件；(3)一种新的分析解决方案，在低工具浸入条件下提供重要的物理见解；(4)不局限于单向进给的新型仿真模型；(5)扩展了新的测量装置，提供全刀具动态数据。

This Small Business Innovation Research (SBIR) Phase II project will integrate a novel, inexpensive device to measure tool dynamics with a general purpose analysis program that will optimize the use of high speed machining centers as a routine shop floor practice. High speed machining is often limited by chatter conditions. These conditions depend on system dynamics and cutting conditions. The product to be developed will provide an integrated hardware/software solution to assist users in selecting optimal spindle speeds and tool depths without the intervention of experts or specialized equipment. The product will handle general tool geometries, tool paths and in-process part geometries working in conjunction with an industrial grade NC verification program. The program will specifically provide recommendations under low tool immersion (light cut) conditions that are commonly used to avoid tool wear in hard materials. Novel aspects include: (1) the study of chatter under transient conditions; (2) sculptured surface parts; (3) a new analytical solution that provides important physical insights under low tool immersion conditions; (4) a new simulation model that is not restricted to uni-directional feed; and (5) the extension of a new measurement device to provide full tool dynamic data.