Sheet Metal Thickness Compensation for Accurate Cutting and Bending
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Solution Overview
Problem
Current metal processing methods, particularly in sheet metal cutting and bending, face inaccuracies due to variations in sheet metal properties, leading to errors and increased scrap, as they rely on theoretical values rather than real-time measurements, and fail to link cutting and bending processes effectively.
Innovation Solution
A computer-implemented method that measures workpiece properties, such as thickness, to generate supplementary processing plans that adapt cutting and bending instructions in real-time, ensuring accurate processing plans based on actual material properties, thereby improving tolerance and reducing scrap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If theoretical values are used for processing planning, then the processing system operates automatically without manual intervention, but the processing accuracy deteriorates due to variations in actual sheet metal properties
Solution Approach 1:
The system performs preliminary measurement of the actual sheet metal thickness before generating the processing plan. This advance knowledge of material properties allows the planning system to automatically adjust cutting and bending parameters without manual intervention, resolving the contradiction by enabling both automation and precision through pre-acquired material data.
Solution Approach 2:
The system implements a feedback loop where actual sheet metal properties are measured and used to adjust the processing plan. The measurement system provides real-time data about material variations, which the control system uses to automatically recalculate and optimize processing parameters, maintaining both automation and manufacturing precision.
2Manufacturing precision
If manual measurement of sheet metal thickness is performed, then the processing accuracy can be improved by using actual values, but the productivity deteriorates due to increased manual intervention time
Solution Approach 1:
The system replaces manual mechanical measurement with an automated optical or sensor-based measurement system. This substitution eliminates the need for operators to physically measure sheet metal thickness, maintaining processing accuracy through precise automated measurement while preserving productivity by removing manual intervention from the measurement process.
Solution Approach 2:
The measurement system is integrated into the processing line such that the sheet metal is measured automatically as it passes through the system, without requiring separate manual measurement steps. The material essentially measures itself during normal handling, eliminating downtime and maintaining continuous production flow while obtaining accurate material property data.
3Manufacturing precision
If the processing plan is adjusted for each variation in sheet metal properties, then the manufacturing precision is improved, but the device complexity increases due to additional measurement and adjustment systems
Solution Approach 1:
The system uses a multi-functional integrated platform that combines measurement, data processing, and plan generation capabilities in a single system. The same hardware infrastructure supports multiple measurement types and the software platform handles various material properties and processing operations, reducing overall system complexity while maintaining the ability to adapt to material variations.
Solution Approach 2:
The system introduces a software intermediary layer that acts as a mediator between the measurement system and the processing equipment. This software layer processes measurement data, generates adjusted processing plans, and communicates with standard processing machines without requiring complex hardware modifications, thereby maintaining processing precision while limiting device complexity.
4Device complexity
If conventional bending machines are used with fixed parameters, then the device complexity remains low, but the manufacturing precision deteriorates due to inability to compensate for material variations
Solution Approach 1:
The system transforms the static, fixed-parameter bending machine into a dynamic system that can automatically adjust its parameters based on measured material properties. The control system modifies bending force, speed, and positioning in real-time according to actual sheet metal characteristics, enabling conventional machines to achieve high precision without requiring complex mechanical redesign.
Solution Approach 2:
The system achieves improved bending precision by dynamically changing processing parameters such as bending force, speed, and tool positioning based on measured material properties. Instead of modifying the physical structure of the bending machine, the system adjusts operational parameters through software control, maintaining device simplicity while achieving high manufacturing precision.
Data Source
AI summary
The present invention relates to a computer-implemented method and a planer for calculating at least one supplementary processing plan for a workpiece to be processed by a processing machine. The method comprises the steps of: Measuring workpiece properties, including a thickness parameter of the workpiece; Providing at least one supplementary processing plan, which is specific for the measured workpiece properties. Due to the present invention, measurement of the workpiece properties is performed before starting to process the workpiece. Therefore, time and material can be saved, and scrap and waste are reduced.