公开(公告)号：US20080161959A1

公开(公告)日：2008-07-03

申请号：US11998884

申请日：2007-12-03

申请人： Robert B. Jerard ,  Donald Esterling ,  Barry K. Fussell ,  Min Xu ,  Chad Schuyler

发明人： Robert B. Jerard ,  Donald Esterling ,  Barry K. Fussell ,  Min Xu ,  Chad Schuyler

IPC分类号： G06F17/00

CPC分类号： G05B19/4065 ,  G05B2219/37258 ,  G05B2219/50319 ,  G05B2219/50321

摘要： A system and method for monitoring tool wear in CNC machining operations by monitoring spindle power and extracting instantaneous cutting geometry. The method is based on a physics-based two parameter process model and measuring at two different cutting conditions. The process model parameters are measured with easily accessible spindle power. In contrast to spindle power alone which is influenced by many factors, most especially by variable cutting conditions and by the tool condition, the process model parameters are independent of the geometrically variable cutting conditions and provide a simple and direct measure of tool wear. The two process model parameters change differently depending on the mechanism of the tool wear, specifically flank wear versus cutting edge degradation. This provides a diagnostic for tool wear.

摘要翻译： 通过监控主轴功率和提取瞬时切割几何，可以在CNC加工操作中监控刀具磨损的系统和方法。 该方法基于物理学两参数过程模型，并在两种不同的切割条件下进行测量。 使用容易接近的主轴功率测量过程模型参数。 与单独的主轴功率相反，这受到许多因素的影响，特别是通过可变切割条件和刀具条件，过程模型参数与几何可变切削条件无关，并提供了刀具磨损的简单直接测量。 两个过程模型参数根据刀具磨损的机理而异，特别是侧面磨损与切削刃退化有关。 这提供了刀具磨损的诊断。