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The machining torch movement for the rectangular plasma sheet metal cut.

Alvaro Neuenfeldt Júnior¹, Matheus Francescatto¹, Olinto Araújo²

¹Innovation and Competitiveness Group, Production Engineering Post-Graduation Program, Federal University of Santa Maria, Santa Maria, Brazil.

|September 14, 2023

Summary

This study compares optimal and heuristic methods for plasma sheet metal cutting. While heuristics reduce cutting time and torch movement, optimal solutions minimize material waste, making them more economical.

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Area of Science:

Manufacturing Engineering
Operations Research

Background:

Sheet metal cutting aims to minimize waste while considering operational efficiency.
Optimizing cutting paths is crucial for reducing processing time and material loss.

Purpose of the Study:

To compare machining torch movement behavior for rectangular plasma sheet metal cuts.
Evaluate optimal versus alternative heuristic solutions for cutting efficiency and material waste.

Main Methods:

Optimal solutions derived using mixed-integer linear programming.
Alternative solutions generated via bottom-left-fill and tabu search heuristics.
Comparison based on processing time, effective cutting distance, and non-cutting movement distance.

Main Results:

Heuristic solutions can decrease operational cutting time and torch movement distance.
Optimal solutions, while potentially increasing movement, significantly reduce raw material waste.
Economic analysis favors optimal solutions due to lower material costs.

Conclusions:

The choice between optimal and heuristic solutions depends on prioritizing operational efficiency versus material cost savings.
For economic viability in plasma sheet metal cutting, optimal solutions are recommended to minimize waste.