Autonomous System for Cylindrical Plunge Grinding

本研究项目的目的是开发和评估一个用于外圆插销磨削的原型系统。该系统将根据表征加工条件和零件质量的过程中和加工后测量结果，调整循环的各个部件的运行参数，以缩短周期时间，同时满足部件质量约束。为了应对过程的定量不确定性，周期时间缩减方法将采用从磨削过程模拟得出的IF-THEN规则。将只使用两个过程中的传感器，一个电力监视器和一个尺寸计，可以承受恶劣的生产环境。结果表明，从这些传感器获得的信息，以及零件质量(即光洁度和圆度)的后处理测量(检测)，可以通过过程模型来表征磨削过程的状态。将在仿真中设计和评估缩短周期时间的方法。自主系统的实际实施和测试将在一台商用内圆磨床上进行，该内圆磨床改装了电气驱动和传感器，并与个人计算机接口，用于数据采集、系统识别和机器控制。调查结果将为新一代研磨系统的商业化开发以及旧磨床的改造(升级)提供科学和技术基础。

The aim of this research project is to develop and evaluate a prototype autonomous grinding system for cylindrical plunge grinding. The system will adjust the operating parameters of the cycle from part to part to reduce cycle time while satisfying part- quality constraints in response to in-process and post-process measurements which characterize the processing conditions and part quality. In order to cope with quantitative uncertainty of the process, the cycle time reduction methodology will employ if-then rules derived from a simulation of the grinding process. Only two in-process sensors will be used, a power monitor and a size gage, which can withstand a harsh production environment. It is shown that information derived from these sensors, together with post-process measurement (inspection) of part quality (i.e., finish and roundness), can be used to characterize the state of the grinding process through process models. The cycle time reduction methodology will be designed and evaluated in simulation. Practical implementation and testing of the autonomous system will be on a commercial internal grinder, retrofitted with electrical drives and sensors and interfaced to a personal computer for data acquisition, system identification, and machine control. The result of this investigation will provide the scientific and technological basis for commercial development of a new generation of grinding systems as well as retrofitting (upgrading) of older grinders.