2D Part Nesting Across Multiple Corners and Orientations
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Solution Overview
Problem
Conventional nesting techniques for 2D part drawings on 2D sheets are limited by starting from a single predefined corner and direction, leading to suboptimal fitting and inefficient raw material usage.
Innovation Solution
A method and system that utilize a computing device to identify multiple valid positions and orientations of 2D part drawings on a 2D sheet based on predefined corners and directions, optimizing packing efficiency through a packing efficiency function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional nesting techniques use a single predefined corner and direction for placing 2D parts, then the fitting process is simple and fast, but the packing efficiency is suboptimal and raw material usage is inefficient
Solution Approach 1:
The patent segments the fitting process by evaluating multiple corners (e.g., top-left, top-right, bottom-left, bottom-right) and multiple directions (horizontal, vertical, diagonal) independently. Each corner-direction combination is treated as a separate evaluation unit, allowing the system to identify the optimal placement location without overwhelming complexity through systematic modular evaluation.
Solution Approach 2:
The patent introduces dynamic evaluation by allowing the nesting algorithm to adaptively select from multiple corners and directions based on real-time sheet availability and part geometry. Rather than being fixed to a single corner-direction pair, the system dynamically adjusts the evaluation parameters to maximize packing efficiency for each specific nesting scenario.
2Loss of substance
If conventional techniques compute positions from one corner and one direction, then the computational process is simple, but the raw material utilization is inefficient
Solution Approach 1:
The patent performs preliminary evaluation of multiple corner and direction options before finalizing the placement decision. By pre-calculating potential placement locations across all corners and directions, the system identifies the optimal position that minimizes material waste, ensuring that the chosen placement maximizes raw material utilization before committing to it.
3Productivity
If multiple corners and directions are evaluated for each part placement, then packing efficiency is optimized, but the computational complexity increases
Solution Approach 1:
The patent creates a universal evaluation framework that handles multiple corners and directions through a single standardized algorithm. The same evaluation logic is applied uniformly across all corner-direction combinations, making the complex multi-parameter evaluation manageable through consistent universal rules rather than separate specialized routines for each case.
Data Source
AI summary
This disclosure relates to method and system for fitting 2-dimensional (2D) part drawings in 2D sheet drawings. The method includes receiving a first part drawing corresponding to a first 2D part and a sheet drawing corresponding to a 2D sheet. The 2D sheet includes a plurality of corners. The method further includes identifying a plurality of valid positions for the first part drawing on the sheet drawing based on the plurality of corners and a plurality of predefined nesting directions. The method further includes, at each of the plurality of valid positions, evaluating each of a plurality of orientations of the first part drawing on the sheet drawing based on predefined selection criteria. The method further includes determining an optimal orientation from the plurality of orientations and an optimal position from the plurality of valid positions in order to optimize a packing efficiency function.