OFF-LINE ADAPTIVE OPTIMIZATION OF CNC LATHE TURNING OPERATIONS

Abstract

This thesis discusses the microcomputer program SIMTUP for optimization of a multi-pass lathe development off-line of adaptive turning process. An initial estimation based on empirical models is conducted to obtain the total amount of time, cost and resources required for production. These models are to be updated with a view to arriving at new optimal cutting conditions with respect to production time. The optimal cutting conditions are based on the minimum production cost change with respect to production time for a dynamic system, a principle taken into account in SIMTUP. Estimations can be conducted at any stage to re-evaluate the total resources required. The results obtained can be used as effective productivity improvement tools for project management and quality control. In engineering economic studies, the results can be used in cost estimating. In planning and control, it can be used as inputs for project analysis, material requirements planning, inventory management and control. The adaptive optimization techniques used could reduce or even eliminate the number of rejects and reworks, making zero defect production a real possibility.