外文翻譯--蟻群優(yōu)化沖壓激光組合機(jī)床的最佳工藝設(shè)計(jì)方法（節(jié)選）-其他專業(yè)-全文預(yù)覽
【正文】 many fruitful results. A recent work with a good review is done by Li et al. (2021). Figure 1. Amada Apelio bined punchandlaser machine (Amada American, Inc. ) This work will focus on the processplanning problem for the bined punchandlaser machine in order to improve the efficiency of the machine and fully automate the process from layout nesting to machining. This work will be the first on optimal process planning for bined punchandlaser machines. 2. Process planning problem for a bined punchandlaser machine For the process planning of a bined punchandlaser machine, one has to make two important decisions for each batch of work pieces, . Which feature is to be punched or cut? What is the optimal sequence of operation to ensure the overall maximum machine efficiency? Let us use the work piece shown in figure 2 as an example. On a sheet metal of 1000_1120 mm, two types of ponents are laid out. The first ponent has a square shape with round corners, a central hole, and four small holes. The second ponent is a bination of a semicircle and a rectangle, with a small hole. For the bined machine, there are four different operation features, . 23 small holes of F50, four large holes of F180, four contours for the first ponent, and 7 contours for the second ponent. For automatic process planning, which feature is to be punched and which is to be cut? If the first question were answered, what would be the optimal operation sequence that yields the maximum machine efficiency? This work will develop a quantitative method guided by heuristics to address the first question, and then apply the ACO algorithms to answer the second question. The methods are then tested with the problem shown in figure 2 and a more plex sheet metal work piece. Integration of the proposed methods with ComputerAided Nesting (CAN) and GCode generation tools will also be discussed. Before discussing the proposed methodology, some assumptions are given first to confine us to an appropriate scope of study: Operation sequence (process) will be optimized to improve the machine efficiency of the bined punchandlaser machine. The increase of machine efficiency is expected to translate into reduced machine cost, abour cost and increased throughput, etc. Figure 2. Batch of work pieces to be machined in the bined punchandlaser machine (unit:mm). Given the fact that most bi
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