Inspection Gauge Calibration via Multi-Posture Reorientation

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Solution Overview

Problem

Existing calibration methods for three-dimensional measuring apparatuses require complex inspection gauges, which are cumbersome and difficult to manage.

Innovation Solution

A simplified calibration data acquisition method and inspection gauge design that involves holding the inspection gauge in multiple postures and measuring distances between its portions using a three-dimensional measuring apparatus, thereby generating calibration data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a complex inspection gauge structure is used, then sufficient calibration data can be acquired, but the device complexity increases

Engineering Contradiction:

Improvecalibration data sufficiencyVSAvoidinspection gauge structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The inspection gauge is designed to be held in multiple postures (first posture and second posture) by the gauge moving apparatus, allowing the same physical gauge to provide multiple measurement configurations dynamically rather than requiring a complex static structure

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

A single inspection gauge with portions arranged on a straight line serves multiple calibration functions by being positioned in different postures, eliminating the need for separate complex gauges for different calibration scenarios

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If multiple inspection gauges are used, then comprehensive calibration can be performed, but the ease of operation decreases

Engineering Contradiction:

Improvecalibration completenessVSAvoidcalibration procedure complexity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

Multiple calibration measurements are merged into a single inspection gauge operation sequence, where one gauge is measured in multiple postures sequentially rather than requiring multiple separate gauges to be handled and positioned

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250116497A1Calibration data acquisition method and inspection gauge

Publication Date: 2025.04.10 MITUTOYO CORP

AI summary

A calibration data acquisition method includes: a first holding step of holding an inspection gauge provided with a plurality of portions to be examined in a first posture with a gauge moving apparatus; a first measuring step of acquiring first distance data by measuring a distance between the plurality of portions to be examined with the three-dimensional measuring apparatus; a second holding step of holding the inspection gauge in a second posture with the gauge moving apparatus, after the first measuring step; a second measuring step of acquiring second distance data by measuring a distance between the plurality of portions to be examined of the inspection gauge in the second posture with the three-dimensional measuring apparatus; and a step of generating calibration data including the first distance data and the second distance data.