Plate Blank Surface Modeling for Accurate Pressing Simulation

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Solution Overview

Problem

Existing simulations using blank models diverge from actual results due to irregularities in blank materials that are not limited to periodic corrugations, leading to reduced accuracy.

Innovation Solution

A method for generating a plate-shaped blank model using response surface methodology to determine coordinates based on three-dimensional coordinates, incorporating a surface function to create a point cloud that matches the properties of the blank material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a blank model with periodic corrugation is used for simulation, then the simulation can account for curved surfaces, but the simulation results diverge from actual results when irregularities are not periodic corrugations

Engineering Contradiction:

Improvesimulation accuracyVSAvoidapplicability to different irregularity types

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The invention creates a virtual blank model that copies the actual surface irregularities of the blank material by measuring real coordinates and generating a surface function that reproduces these irregularities. This allows the simulation to accurately represent the actual blank properties rather than using idealized periodic corrugation patterns.

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The invention changes the parameters of the blank model by introducing measured surface irregularity coordinates and generating a surface function with specific mathematical parameters (polynomial coefficients) that match the actual blank's geometry. This transforms the simulation from using generic corrugation parameters to using actual measured parameters.

Inventive Principle:

Principle #35Parameter changes

2Ease of manufacture

If simple geometric models are used for blank representation, then the model generation is easier, but the simulation accuracy decreases due to inability to represent actual blank properties

Engineering Contradiction:

Improvemodel generation simplicityVSAvoidsimulation precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The invention introduces a surface function as an intermediary between the measured coordinates and the final blank model. This surface function acts as a mathematical mediator that transforms discrete measurement points into a continuous surface representation, enabling accurate model generation while maintaining computational tractability.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The invention performs preliminary measurements and coordinate acquisition before model generation. By pre-measuring the actual blank's surface irregularities and storing these coordinates, the system prepares accurate input data that will be used to generate the surface function, ensuring both accuracy and efficiency in the modeling process.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20260044647A1Blank model generation method, blank model analysis method, and blank model generator

Publication Date: 2026.02.12 FUTABA IND CO LTD

AI summary

A method for generating a plate-shaped blank model for a simulation is provided. The method includes: acquiring a plurality of sets of three-dimensional coordinates respectively associated with a plurality of positions within a plate-shaped blank material; generating a surface function using a response surface methodology to determine a coordinate of a position within the blank material based on the plurality of sets of three-dimensional coordinates; and generating the blank model using the surface function, the blank model including a point cloud containing a plurality of coordinates.