多台阶工件磨削过程的自动测量与控制技术研究

Automatic Measuring and Controlling Method for Stepped Sharft Part Grinding

针对多台阶工件磨削过程,基于主动测量技术提出了一种零位基准自动切换的在线移动测控方法。通过利用传感装置和校对规进行各个台阶零位和传感装置倍率的测定,并将零位电压和倍率值储存至后台系统数据库中。在自动磨削加工中,根据磨削进程自动调用数据库中相应台阶的零位电压和倍率值,并通过设计开发的基准自动补偿电路与移动测控软件系统,实现测量基准的转换及对传感装置零位的调整和校正,根据预先设定的各台阶磨削过程的信号点,逐步实现磨削进程,从而完成各个台阶的磨削加工。实验结果表明了该方法在保证测量精度和准确性的前提下,提高了磨削的效率,从而为实现多台阶工件自动磨削过程的测量和控制提供了一种可行的方法。

Based on initiative measurement technique, an on-line measuring and controlling method by refer- ence automatic switching is proposed for stepped shaft part grinding. Each step＇ s zero-position and magnifi- cation are measured with gage head and master before grinding, and data of zero-position voltage and magni- fication values are saved into database system. In grinding process, appropriate zero-position voltage data of each step and magnification values are called automatically from database. At the same time, measurement reference switching and zero-position adjustment can be realized by reference compensation circuit and software control system, and grinding process of each step can be controlled by controller according to pre-set signals. Experiment results show that the proposed method can not only ensure the measuring accuracy and reliability but also improve the grinding efficiency. Thereby, this provides a feasible means to realize meas- uring and controlling for stepped shaft part grinding.