COMPUTER-AIDED PROCESS PLANNING FOR PARALLEL MACHINES

In this paper, we extend the domain of computer-aided process planning to include a new and powerful class of machine tools. A unique feature that characterizes these machine tools is their ability to perform machining in parallel. In particular, multiple tools can simultaneously machine a single workpiece and multiple workpieces can be machined simultaneously. Such machines can finish a part in a single setup resulting in shorter cycle times. These machines can also provide higher machining accuracy by drastically reducing the potential for tolerance buildup. We introduce and formalize a concept for parallel machines that can be extended to include machines more powerful and capable than the ones being used today. Next, we study the effects of parallelism on computer-aided process planning by identifying and examining some new issues that arise in the parallel machining domain. Finally, we propose and discuss a framework for a computer-aided process planning system in which these issues are incorporated.