Coordinate Measuring Test Planning from Workpiece Geometry

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Solution Overview

Problem

The existing methods for creating measurement sequences for coordinate measuring machines are often manual and time-consuming, requiring significant effort to select and define test features for workpieces, especially when dealing with complex geometric relationships.

Innovation Solution

A method that utilizes a database of pre-defined data records containing geometric elements and their dimensional relationships, allowing for the automatic identification and incorporation of test features into a test plan based on the geometry of the workpiece.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If manual methods are used to create measurement sequences, then flexibility and adaptability are maintained, but time consumption and effort increase significantly

Engineering Contradiction:
Improvetime consumptionVSAvoidmanual effort
Core Design Contradiction:
Loss of timeVSEase of operation

Solution Approach 1:

The patent applies preliminary action by pre-defining geometric relationships and test features in a database before actual measurement tasks. The system automatically matches workpiece geometry with predefined relationships, eliminating the need for manual test feature selection during measurement operations. This reduces both time consumption and manual effort while maintaining measurement quality.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If automatic creation of measurement sequences is implemented, then productivity increases, but complexity of the system increases

Engineering Contradiction:
Improvemeasurement efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent uses copying by creating a database of predefined geometric relationships and test features that can be reused across multiple measurement tasks. Instead of developing measurement sequences from scratch for each workpiece, the system copies and adapts predefined patterns, significantly improving productivity while keeping system complexity manageable through standardized templates.

Inventive Principle:
Principle #26Copying

3Measurement precision

If comprehensive test features are selected for complex workpieces, then measurement precision improves, but time consumption and complexity increase

Engineering Contradiction:
Improvetest feature accuracyVSAvoidtime consumption
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary action by pre-identifying relevant test features based on geometric relationships stored in the database. When a workpiece geometry is recognized, the system automatically retrieves associated test features, ensuring measurement precision without requiring manual analysis time. This eliminates the trade-off between comprehensive testing and time consumption.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20250157024A1Method of Using a Coordinate Measuring Machine to Measure a Workpiece
Publication Date: 2025.05.15 CARL ZEISS INDUSTRIELLE MESSTECHNIKE GMBH
  • US20250157024A1 patent drawing
  • US20250157024A1 patent drawing
  • US20250157024A1 patent drawing

AI summary

A method of using a coordinate measuring machine includes accessing a database and ascertaining workpiece coordinates for a designated workpiece by evaluating corresponding measurement data or planning data. Each data record in the database includes data on at least two geometric elements that a workpiece might contain, at least one geometric relationship of the at least two geometric elements to one another, and a test feature assigned to the at least two geometric elements that is testable. The method includes creating a determination result by determining, based on the workpiece coordinates, whether the designated workpiece contains the at least two geometric elements and the at least one geometric relationship of a data record. The method includes generating a test plan for measuring the designated workpiece by, depending on the determination result in relation to the respective data record, incorporating the assigned test feature in the test plan.