利用动态数据系统(DDS)图示与计算自激振动时的切削面积

本文介绍了由多种传感器、两台微型计算机构成的车削加工数据实时采集与处 理的机－电－体化动态测试系统。由该系统所建立的动态数据系统（ＤＤＳ）存有３ 种５０万个实测数据。 文中重点叙述了利用上述ＤＤＳ对自激振动时的切削面积变化规律进行定性与 定量分析研究：利用计算机对切削刃位置和切削面积变化用图示法使之“可视化”： 通过统计法建立起来的切削面积数学模型，可对动态切削面积进行实时解析计算， 最后通过均方差分析，对４种算法进行比较，提供了实用而准确的计算方法与结果。

Making Use of the Dynamic Data System, Graphic Method and Mathematical Method of Cutting Area in Self-Excited Vibration

This paper introduces a dynamic,electro-mechanical test and measuring system, consisting of multiple sensors and two microcomputers. This system has the fun- ction of real-time sampling and information processing in turning test. ln the memory of dynamic data system (DDS) there are 500,000 measured data. This paper deals mainly with the change of cutting area in self-excitation qualitatively and quantitatively. The changes of position of cutting edge and cutting area are indicated with graphic method. The mathematical model of cut- ting area set up with statistical method can be used to compute the dynamic cut- ting area. Finally a practical and accurate method is proposed through the analysis of variance averages for the four methods.