Press Line Simulation for Feeder Interference Curve Verification

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Solution Overview

Problem

In tandem press lines with servo press and feeder devices, confirming interference between press devices and feeder devices has become challenging due to complex movements, making it difficult to use traditional interference curve methods effectively.

Innovation Solution

A simulation device with a simulation unit and an acquiring unit is provided to simulate the operations of press and transport devices, acquiring the locus of predetermined positions in the width direction of the transport device, allowing for easy interference confirmation by calculating interference curves from the simulated data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional interference curve methods are used with fixed motion press devices, then interference confirmation is straightforward, but the system lacks adaptability to complex servo-driven movements

Engineering Contradiction:

Improveadaptability to servo-driven complex movementsVSAvoidease of interference confirmation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The patent creates virtual copies (locus data) of the transport device's movement paths through simulation, allowing multiple predetermined positions to be traced and analyzed without physical interference testing. This copying approach enables complex servo movements to be replicated virtually, making interference confirmation easier while maintaining adaptability to different motion patterns

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The simulation performs preliminary actions by pre-calculating and storing locus data for multiple predetermined positions of the transport device before actual production. This preliminary simulation of complex movements allows interference curves to be generated in advance, simplifying the actual interference confirmation process while accommodating various servo-driven motion patterns

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If servo press devices and servo feeder devices with free motion functionality are used, then system versatility improves, but interference confirmation becomes difficult due to complex movements

Engineering Contradiction:

Improvefree motion functionalityVSAvoiddifficulty of interference confirmation

Core Design Contradiction:

Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the transport device's movement into multiple predetermined positions along its locus, tracing each position separately through simulation. This segmentation of complex free motion paths into discrete measurable points makes it easier to detect and measure interference while preserving the system's versatile free motion capabilities

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces physical mechanical interference testing with computer-based simulation that substitutes actual mechanical movements with virtual locus data generation. This substitution enables easy detection and measurement of interference patterns for complex servo-driven movements without the difficulties of physical testing

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If locus data is generated for complex free motions, then adaptability to different movements is achieved, but the complexity of multiple feeder device types increases the difficulty of interference confirmation

Engineering Contradiction:

Improvecompatibility with multiple feeder device typesVSAvoidcomplexity of multiple feeder device types

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent creates a universal simulation approach that generates locus data for multiple predetermined positions applicable to various feeder device types. This universal method handles different device complexities through a single standardized process, making interference confirmation easier while maintaining compatibility with multiple feeder device configurations

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11543812B2Simulation device, press system, simulation method, program, and recording medium

Publication Date: 2023.01.03 KOMATSU SANKI

AI summary

A simulation device has a simulation unit and a coordinate acquisition unit. The simulation unit simulates the operations of press devices and the operations of feeder devices that transport a workpiece between the press devices. The coordinate acquisition unit acquires a locus of a plurality of predetermined positions in the width direction of the feeder devices from simulation.