Gear Cutting Machine Setup via Optical Scanning and Virtual Assembly

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Solution Overview

Problem

The current method of setting up a gear cutting machine is time-consuming and error-prone, requiring manual measurement and entry of parameters, which can lead to faulty workpieces and machine damage due to incorrect entries.

Innovation Solution

A method involving graphic modeling on a display element to virtually assemble machine parts, allowing users to select and position subcomponents, with automatic derivation of control parameters and real-time rendering, eliminating manual calculation and reducing errors.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual measurement and parameter entry is used for setting up the gear cutting machine, then the setup process can be completed with simple equipment, but the process becomes time-consuming and error-prone

Engineering Contradiction:
Improvesetup process simplicityVSAvoidsetup time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent uses optical scanning to create a digital copy (3D model) of the physical tool, eliminating the need for manual measurement. The scanned data is automatically processed and imported into the machine control, replacing the manual measurement and parameter entry process while reducing setup time and errors.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces the manual mechanical measurement process with an automated optical scanning system. The scanner automatically captures tool geometry and the system automatically processes the data, substituting human operation with automated optical and computational processes to reduce setup time.

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

2Ease of manufacture

If manual measurement and parameter entry is used for setting up the gear cutting machine, then the equipment required remains simple, but the reliability of parameter input decreases due to human error

Engineering Contradiction:
Improveequipment simplicityVSAvoidparameter input accuracy
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent creates a digital copy of the physical tool through optical scanning, ensuring that the parameter data directly reflects the actual tool geometry without human interpretation errors. This digital replica is then used by the machine control, guaranteeing parameter accuracy.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The system performs self-measurement through automated optical scanning, where the tool itself provides its geometric information through the scanning process. The tool's physical features are automatically detected and converted into digital parameters without requiring human measurement skills or judgment.

Inventive Principle:
Principle #25Self-service

3Manufacturing precision

If graphic modeling with virtual assembly is implemented for machine part configuration, then the accuracy of parameter input improves, but the device complexity increases

Engineering Contradiction:
Improveparameter input accuracyVSAvoidsetup system complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent uses optical scanning to create an accurate digital copy of the physical tool geometry. This 3D model serves as the basis for automatic parameter extraction, ensuring high accuracy without requiring complex manual modeling procedures. The scanning process captures all necessary geometric information automatically.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent replaces complex manual measurement and calculation processes with automated optical scanning and computational processing. The system automatically converts scanned 3D data into machine control parameters, eliminating the need for operators to manually model or calculate parameters, thus improving accuracy while managing complexity through automation.

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

4Productivity

If automated optical scanning is used for tool measurement, then the setup time is reduced and accuracy is improved, but the equipment complexity and cost increase

Engineering Contradiction:
Improvesetup speedVSAvoidmeasurement system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent employs optical scanning to create a rapid digital replica of the tool geometry. This copying process is fast and automated, capturing complete tool information in seconds compared to manual measurement, thereby significantly reducing setup time while the automated processing keeps the overall system manageable.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent substitutes manual measurement operations with automated optical scanning and computational processing. This replacement dramatically increases setup speed by eliminating manual operations, and while it introduces complex equipment, the automation reduces the need for skilled operators and minimizes human error, providing overall system efficiency gains.

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

Data Source

PatentEP2849013B1Method for setting up a gear cutting machine and gear cutting machine
Publication Date: 2019.04.24 LIEBHER VERZAHNTECHNIK GMBH
  • EP2849013B1 patent drawingFigure 1a~1b
  • EP2849013B1 patent drawingFigure 1c~1d
  • EP2849013B1 patent drawingFigure 2a~2b

AI summary

The invention relates to a method for setting up a gear cutting machine, wherein the gear cutting machine is set up with at least one settable machine part and the parameters relating to the set up machine part for the subsequent gear cutting process are entered into the machine control, wherein a graphical model of the machine part is virtually assembled on a display element of the gear cutting machine in a user-controlled manner from one or more graphical sub-components and the necessary parameters for the subsequent gear cutting process are derived from the graphical modeling.