Remote Nesting Strategy Optimization for Leather Cutting Yield

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Solution Overview

Problem

CNC leather processors face inefficiencies in material cutting due to time-consuming nesting strategy development, leading to suboptimal yield and waste, as operators often stick to initial strategies rather than exploring better options, due to the complexity and time required for serial testing of multiple strategies.

Innovation Solution

A system that separates the development of nesting strategies from the production environment, using a remote development environment to collect data, develop and optimize cutting strategies based on shape, defects, and material grade, and provide these strategies to the production environment for efficient cutting operations, leveraging computational power for iterative comparisons and statistical analysis to identify optimal layouts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of substance

If multiple nesting strategies are tested serially in production to determine optimal yield, then material yield is improved, but production time and complexity increase significantly

Engineering Contradiction:
Improvematerial yieldVSAvoidproduction time
Core Design Contradiction:
Loss of substanceVSLoss of time

Solution Approach 1:

The system performs nesting strategy development and evaluation in advance, before actual production cutting begins. Multiple strategies are pre-computed and stored in a library, allowing the production system to simply retrieve and execute the optimal strategy without time-consuming serial testing during manufacturing.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The invention separates the nesting strategy development process from the production cutting process. The strategy development is performed independently in a separate system, and only the final optimized strategy is transferred to production, dividing the complex optimization task from the straightforward execution task.

Inventive Principle:
Principle #1Segmentation

2Loss of substance

If technicians experiment with multiple nesting strategies during set-up, then optimal yield strategy is found, but the process is time consuming and only a fraction of strategies are evaluated

Engineering Contradiction:
Improvematerial yieldVSAvoidstrategy evaluation complexity
Core Design Contradiction:
Loss of substanceVSDevice complexity

Solution Approach 1:

A separate nesting strategy development system acts as an intermediary between the technician's initial strategy selection and the production cutting system. This intermediary system automatically evaluates multiple strategies using computational algorithms, replacing the manual trial-and-error process with automated optimization.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The manual mechanical process of technicians physically testing different nesting arrangements is replaced with computational algorithms that automatically evaluate multiple strategies. The system uses computer-based optimization methods to assess yield and complexity metrics without physical intervention.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Loss of substance

If operators deviate from initial strategy selection to search for better strategies, then material yield may improve, but production throughput is reduced

Engineering Contradiction:
Improvematerial yieldVSAvoidproduction throughput
Core Design Contradiction:
Loss of substanceVSProductivity

Solution Approach 1:

The system automatically performs strategy optimization without requiring operator intervention. The nesting strategy development system independently evaluates strategies and selects the optimal one, eliminating the need for operators to manually search for better strategies and maintaining continuous production flow.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Optimal nesting strategies are determined in advance before production begins, so operators can simply execute the pre-determined strategy without deviation or additional searching during production, maintaining throughput while achieving optimal yield.

Inventive Principle:
Principle #10Preliminary action

4Loss of substance

If multiple nesting strategies are evaluated with computational analysis, then optimal yield solution is achieved, but computing time and resources are required

Engineering Contradiction:
Improvematerial yieldVSAvoidcomputing time
Core Design Contradiction:
Loss of substanceVSLoss of time

Solution Approach 1:

All computational evaluation and strategy development is performed in advance during non-production time. The system computes multiple strategies, evaluates their yield and complexity, and stores the results in a library, so no computing time is required during actual production operations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The computational-intensive strategy evaluation is segmented from the production process and performed in a separate development system. This allows the production system to focus solely on execution without computational overhead, separating optimization resources from manufacturing resources.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10338564B2Remote material yield optimization for leather and other heterogeneous material
Publication Date: 2019.07.02 GERBER TECH LLC
  • US10338564B2 patent drawing
  • US10338564B2 patent drawing
  • US10338564B2 patent drawing

AI summary

A system for processing a work-piece including a sheet of material into pieces includes a production environment configured for collecting data characterizing the work-piece and for subsequently cutting the work-piece into a plurality of products; and a development environment separate from the production environment, the development environment configured for receiving characterization data from the production environment, developing a nesting strategy for cutting the work-piece and providing the nesting strategy.