本文讨论了在柔性物流系统中各种工件的流动调度策略，使用面向对象的高级 Petri网结合专家系统来给工件物流系统建模。该模型简单且能够很好地实现物流系统中的策略柔性化,文中还介绍了基于模型的各种策略实现方法。

分析了颗粒增强金属基复合材料的加工表面形貌特点。通过切削试验，研究了切削用量和材料组织结构对 SICP/Al 已加工表面粗糙度的影响，并根据切削表面成形机理及刀具磨损的特征，设计了具有引导光整作用的硬质合金刀具。实验结果表明，该刀具可显著降低加工表面粗糙度和提高刀具寿命。

Gearlike cylindrical structure can be used as outer ring of linear bearing for saving material, but the machined surface quality and roundness of this kind of bearing is beyond control in cylindrical grinding and machining efficiency is low. To solve these problems, a new method of pre-stress grinding for gearlike cylindrical surface of linear bearing is put forward based on analysis on the principle of cylindrical centerless grinding. For implementing this process, a set of device with expanding mandrel for loading tensile pre-stress on bearing ring is designed and experiment of through-feed grinding is carried out on centerless grinder. The experimental results show that this method can get fine quality of machined surface and increase the grinding efficiency greatly.

The forming process of serrated chip in high speed cutting for steel is analyzed based on experimental observation. The cause of serrated chip forming in high speed cutting process is the multiple effects of high cutting heat and strain rate. The shear deformation is concentrated in a narrow band and results in a shear localization. In this article, the forming mechanism of serrated chip is analyzed in accordance with the SEM photograph and metallographics got from experiment.