中小孔精密数控内圆磨床监控系统的构建与实验研究

Monitoring system of precision CNC internal grinder for middle and small holes

针对中小孔精密磨削过程中磨削精度不稳定和磨削效率低的问题,将功率检测技术应用到内圆磨削过程监控中,以中小孔精密数控内圆磨床为硬件平台,应用功率传感器监控砂轮电主轴功率,构建了内圆磨床磨削监控系统。分析了磨削质量和磨削工艺参数、磨削效率和磨削功率,建立了磨削功率和磨削效率以及磨削质量和磨削功率之间的关系;采用功率参考线对磨削过程进行了控制,实现了磨削自动对刀、碰撞保护等功能;利用磨削监控系统进行了磨削实验,得到了磨削功率监控上、下参考线;同时也利用该参考线,进行了磨削工艺参数的优化。研究结果表明,磨削监控系统实现了磨削状态的反馈控制,提高了磨削精度以及磨削过程的自动化程度。

Aiming at unstable grinding accuracy and low grinding efficiency in precision grinding process about the holes,power detection technology was applied into grinding process monitoring.Experiment will be studied on the precision CNC internal grinder about holes,through using power sensors,monitoring the power of wheel electric spindle,the internal grinder grinding monitoring system was built.The grinding quality and grinding parameters,grinding efficiency and grinding power were analyzed,to establish the relationships between grinding power and grinding efficiency and grinding quality.The power reference line was used to control the grinding process,and to realize the automatic grinding of knife,collision protection function.With the grinding monitoring system,the grinding experiment was carried out and the grinding power monitoring reference line was obtained.At the same time,grinding process parameters were optimized by using the reference line.The results indicate that grinding monitoring system realizes the grinding state feedback control,improves the grinding precision and automation degree of the grinding process.