Machine Learning solution for machining quality prediction using acoustic emissions, accelerometers and current data

This outcome contains the dataset used to train tool wear & quality prediction algorithms in a milling context. The data model is composed of three data sources (acoustics emission, accelerometers & currents). The acoustics emissions and accelerometers are recorded on an external machine which needs a post-synchronization. The currents are recorded by the system that directly monitors the machine. Acoustics emission (file: toolwear_2020_ae.zip): In a previous data acquisition (not published), the acoustic emission was recorded using three sensors (on the raw part, on the axis closest to the part & outside the machine), but in this dataset, it is only composed of one sensor positioned inside the machine. The sampling rate is 200kHz. Accelerometers (file: toolwear_2020_acc.zip): The accelerometer dataset is composed of nine different sensors with an acquisition frequency of 20kHz. One signal is dedicated to the synchronization between other data sources (acoustics emission & currents). Five signals are installed on the spindle axis, two (XY directions) on the top of the spindle and three (XYZ directions) on the bottom of the axis. The last three (XYZ directions) are located on the axis nearest to the part. Currents (file: toolwear_2020_axes.zip): The machine is composed of five axes and one spindle. For each motor, the current is acquired and stored into the monitoring system of the CNC. The frequency data acquisition is 1kHz.本数据集包含用于铣削场景下刀具磨损与质量预测算法训练的数据集。该数据模型由三类数据源构成：声发射（acoustics emission）、加速度计（accelerometers）与电流信号。其中声发射与加速度计数据采集自外部设备，需进行后期同步处理；电流信号则由直接监控机床的系统采集存储。 声发射数据（文件：toolwear_2020_ae.zip）：在一项未发表的前期数据采集中，曾使用三台传感器采集声发射信号（分别安装于毛坯工件、最靠近工件的轴以及机床外部），但本数据集仅包含一台安装在机床内部的传感器采集的数据，采样率为200kHz。 加速度计数据（文件：toolwear_2020_acc.zip）：该数据集包含九台不同传感器的采集数据，采样频率为20kHz。其中一路信号用于与其他数据源（声发射与电流信号）进行同步。传感器布局如下：五路信号安装于主轴轴上，其中两路（对应XY方向）安装在主轴顶部，三路（对应XYZ方向）安装在轴的底部；剩余三路（对应XYZ方向）安装在最靠近工件的轴上。 电流信号数据（文件：toolwear_2020_axes.zip）：该机床包含五个轴与一个主轴，针对每台电机的电流均进行采集并存储至CNC监控系统中，数据采集频率为1kHz。