An integrated approach on cut planning and nesting for metal structures manufacturing

Abstract

An integrated approach is put forward to solve the combined cut planning and nesting problem for metal structures manufacturing. In this article, a three-stage solution procedure is framed, which involves dividing the cutting parts into several groups by rules, generating different layouts or patterns in different strategy, and selecting apt cutting patterns. As some layouts with less trim-loss may lead to high setup cost and high stock level, a multiobjective mathematical model, which takes into account the trim-loss, setup cost, labor cost, and their tradeoffs, is developed. Furthermore, a method with ant colony optimization for solving the mathematical model is proposed. The key research of this article is to focus on the nesting problem by using parallel optimization on a variety of steel plates and choosing an apt cutting pattern by weighing the trim-loss, setup cost, and labor cost. The computational results and comparison prove that the presented approach is quite effective for solving the problem.

A balance approach for the one-dimensional multiple stock size cutting stock problem with setup cost

“…In the same year, Cui et al 14 also proposed a sequential grouping procedure (SGP) for 1SSSDCSP, where the SGP is used to generate a set of patterns, and the CPLEX optimizer solves an ILP model to minimize the sum of material and setup costs based on the given pattern set. Qi and Rao 15 also built a multi-objective mathematical model, which takes into account the trim-loss, setup cost, labor cost and their trade-offs to solve the combined cut planning and nesting problem for metal structures’ manufacturing.…”

Markov Transition Field Enhanced Deep Domain Adaptation Network for Milling Tool Condition Monitoring

“…Along with the increasing wear of the tool, the cutting force, cutting heat, and cutting vibration increase significantly, which will lead to the decline of the workpiece's surface quality. To achieve efficient machining processes, many researchers have conducted numerous studies on the wear mechanism of tools [3][4][5]. Zhang et al [6] investigated diamond scratches during ultra-precision grinding.…”