ABSTRACT
This chapter presents a new methodology on the stability of simultaneous machining (SM), where multiple tools operate at different cutting conditions on the same workpiece. There is no evidence of a broadly agreed upon analytical methodology to assess the stability/instability boundaries for a perfectly known dynamic process model, even for the simplest cases of simultaneous machining. In lack of a solid mathematical methodology to study the SM chatter, the existing practice is likely to be and it really is suboptimal and guided by trial-and-error or ad hoc procedures. Optimum machining aims to maximize the material removal rate while maintaining a sufficient dis-turbance rejection to assure the surface quality. The machine tool instability primarily relates to “chatter.” Machine tool chatter is an undesired engineering phenomenon. In order to prevent the onset of chatter, one has to select the operational parameters appropriately, namely, the chip loads and spindle speeds. Existing studies on machine tool stability address conventional singletool machining processes.
