基于软测量技术的刀具磨损的在线监测

On-line Monitor and Identification for the Tool Wear Based on Soft-measuring Technology

刀具磨损的自动监测是现代制造技术的关键技术之一,是保证自动化加工顺利进行的前提之一。在实际生产当中,对刀具磨损的检测,不能停机检测而只能采取在线的间接监测方法。本文在实时监测主轴电机电流信号的基础上,依据机床的相关切削参数,选择刀具磨损量为主导变量,主电机电流为二次变量。提出了基于软测量技术的铣削加工刀具磨损的在线监测和识别的数学模型,并用实验数据加以验证。

Tool wear automatic monitor is one of the key techniques in modem manufacture and is one of the preconditions, which ensure the automatic machining. During the actual machining, the tool wear was measured by indirect monitor instead of by stopping the machine. By measuring the main motor current real -timely, and selecting the tool wear as the main variable and the main motor current as the second variable. A method of on - line monitor and identification for the tool wear based on the soft - measuring technology was put forward and its rationality was validated with the experimental data.