| 摘要 |
<p>1. A process for monitoring the condition of a tool of a machine tool during the machining of a workpiece by relative rotary movement of the tool and the workpiece, and wherein the components of the machining force acting on the workpiece, namely the feeding force Fv , the return force Fr and the main cutting force Fs , are measured at a given angular position during each revolution and are stored, characterised in that during each revolution the components Fv , Fr and Fs of the cutting force are measured in m different relative angular positions of workpiece and tool, the same for each revolution ; the mean values MFv , MFr and MFs of the component Fv , Fr and Fs are each calculated over a revolution ; relative mean values ~Q1 = MFv/MFs and ~Q2 = MFr/MFs are calculated from the mean values MFv , MFr and MFs ; and the machine tool is turned off if one of the mean values MFv , MFr and MFs and/or of the relative mean values ~Q1 , ~Q2 exceeds a predetermined limiting value.</p> |
