Stamping Forming Curve Optimization to Prevent Rupture and Springback
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Solution Overview
Problem
Conventional stamping processes rely on operator experience to select template curves, leading to frequent workpiece ruptures due to the inability to optimize forming curves according to material characteristics and process requirements, necessitating repetitive experiments for parameter adjustments.
Innovation Solution
A forming method that establishes and optimizes processing curves based on material characteristics, process requirements, and finished product CAD files by selecting and superimposing multiple curves to generate an optimized forming curve, adjusting node positions to match optimization targets and reduce risks of rupture and springback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional template curves are selected based on operator experience, then the stamping process can be performed with simple operation, but the workpiece frequently ruptures due to inability to optimize according to material characteristics
Solution Approach 1:
The patent applies parameter changes by automatically adjusting curve parameters based on material characteristics. The system extracts material properties from CAD files and automatically modifies forming curve parameters to match the specific material being processed, eliminating the need for manual parameter adjustment while preventing workpiece rupture.
Solution Approach 2:
The patent replaces the manual operator selection process with an automated computer-based system. The mechanical decision-making process of selecting template curves is substituted with an automated algorithm that extracts material characteristics and generates optimized forming curves, improving reliability without significantly increasing operational complexity.
2Manufacturing precision
If repetitive experiments are conducted to adjust parameters, then the optimal forming curve can be found, but the manufacturing efficiency is reduced due to time-consuming trial and error
Solution Approach 1:
The patent applies preliminary action by pre-extracting material characteristics from CAD files before the actual stamping process. The system performs material property extraction and curve optimization in advance, so that when production begins, the optimal forming curve is already determined, eliminating the need for repetitive experiments during manufacturing.
Solution Approach 2:
The patent uses copying by extracting material characteristic data from the CAD file model. Instead of physical trial and error with actual materials, the system creates a digital representation of material properties from the CAD model and uses this copy to determine optimal forming parameters, significantly reducing the need for physical experiments.
3Adaptability or versatility
If single template curve is used for all stamping processes, then the device complexity is low, but the adaptability to different material characteristics and process requirements is poor
Solution Approach 1:
The patent applies universality by creating a single automated system that handles multiple material types and process requirements. The forming curve generation system is designed to work with various materials and stamping conditions through a unified approach that extracts material characteristics and generates appropriate curves, providing high adaptability without proportionally increasing device complexity.
Solution Approach 2:
The patent applies dynamics by making the forming curve adaptable and changeable based on input parameters. Instead of using fixed template curves, the system dynamically generates optimized curves by extracting material characteristics from CAD files and adjusting curve parameters accordingly, allowing the same system to adapt to different materials and process requirements.
Data Source
AI summary
A forming method of a processing curve in a stamping process is provided. The method includes the following steps. A plurality of processing curves are established, and an optimization target is set for the processing curves according to material characteristics of a workpiece, process requirements and a finished product CAD file. At least two of the processing curves are selected and superimposed to form a basic forming curve, wherein each subsection of the basic forming curve corresponds to a selected processing curve. Whether the selected processing curve in each subsection of the basic forming curve matches the optimization target is determined.