Coordinate Alignment Tool for X-ray CT and CMM Data Matching
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Solution Overview
Problem
Current measuring X-ray CT apparatuses and coordinate measuring devices face challenges in aligning measurement data coordinates, leading to inefficiencies and reduced accuracy in external and internal dimension measurements, particularly due to the need for separate operation and increased apparatus size when combined, which affects work efficiency and measurement range.
Innovation Solution
A coordinate alignment tool featuring a base with multiple ground faces and three master balls, allowing for precise alignment of measurement attitudes between the X-ray CT apparatus and the coordinate measuring device, using a fixer like a chuck or adhesive to stabilize the object, enabling simultaneous and accurate measurements across both systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the coordinate measuring device is installed inside the X-ray CT apparatus, then measurement accuracy is improved, but the apparatus size increases and the measurement range is reduced
Solution Approach 1:
The invention separates the coordinate measuring device from the X-ray CT apparatus, placing the coordinate measuring device on the rotation table while keeping the X-ray CT apparatus fixed. This segmentation allows both devices to operate independently without requiring integration, thus improving measurement accuracy while avoiding increase in overall apparatus size.
Solution Approach 2:
The invention introduces a coordinate alignment tool as an intermediary between the coordinate measuring device and the X-ray CT apparatus. This tool includes a base with a first ground face for the coordinate measuring device and a second ground face for the X-ray CT apparatus, enabling coordinate alignment without physical integration of the two devices.
2Volume of stationary object
If the coordinate measuring device and X-ray CT apparatus operate separately, then apparatus size is maintained, but coordinate alignment between measurement data becomes difficult
Solution Approach 1:
The coordinate alignment tool serves as an intermediary that bridges the coordinate systems of the separately operating coordinate measuring device and X-ray CT apparatus. The base with specifically designed ground faces enables precise coordinate alignment between the two devices without requiring their integration, thus maintaining apparatus size while simplifying the alignment process.
Solution Approach 2:
The invention changes the parameter of coordinate system alignment by introducing a base with specifically oriented ground faces. The first ground face is configured for alignment with the coordinate measuring device and the second ground face for alignment with the X-ray CT apparatus, enabling coordinate transformation through physical orientation rather than complex computational alignment.
3Device complexity
If separate measurement operations are performed, then apparatus complexity is reduced, but measurement efficiency decreases
Solution Approach 1:
The coordinate alignment tool is prepared in advance with its base having pre-configured ground faces for both devices. This preliminary configuration of the alignment tool allows for rapid coordinate alignment between the coordinate measuring device and X-ray CT apparatus, eliminating time-consuming alignment procedures and improving measurement efficiency while maintaining simple apparatus operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables highly accurate and efficient measurement of both external and internal dimensions by aligning coordinates between the X-ray CT apparatus and the coordinate measuring device, allowing for continuous use without increasing apparatus size or reducing measurement range.
Implementation Method 1
an X-ray source 12 firing X-rays 13 (shaped in a cone beam), an X-ray detector 14 detecting the X-rays 13
Implementation Method 2
The tomographic image of the measured object W is generated by obtaining, using the X-ray detector 14, transmission images (projection images) of the measured object W in various directions
Data Source
AI summary
A coordinate alignment tool includes a base having at least two ground faces to hold an attitude suitable for measurement by a coordinate measuring device and an attitude suitable for measurement by a measuring X-ray CT apparatus, and a fixer to fixate a measured object to the base; and at least three master balls arranged on the base.