Abstract
Abstract This paper addresses the problem of process plan generation and optimization for dual-spindle/dual-turret CNC mill-turn centers (commonly referred to as four-axis turning centers) that are capable of both parallel and simultaneous machining modes. The number of alternative process plans for machining a given workpiece on this class of machines can be large, and the process plan optimization problem can, therefore, be complex. Due to the lack of a computer-aided process plan generation and optimization system, these highly flexible machines are being used in industry today as dedicated, mass-production machines. In this paper, we present research (being conducted in close cooperation with industry) on the development of a computer-aided process planning system for four-axis turning centers. In particular, we describe the representation schemes and Tabu Search based strategy for process plan generation and optimization, and present results demonstrating the effectiveness of this approach.
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