Shape Measurement Probe Timing Alignment for Accurate Coordinates
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Solution Overview
Problem
Conventional non-contact shape measuring devices experience temporal errors between image acquisition and coordinate acquisition, leading to low accuracy in calculated shape data due to synchronization issues between devices generating image data and machine coordinates.
Innovation Solution
A processing system that includes a machine tool with a measuring unit, a control unit, an acquisition unit, an estimation unit, and a shape calculation unit, which acquires and estimates the generation time of position information to accurately calculate the shape of a processing object by synchronizing image data and machine coordinates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image data and machine coordinates are acquired separately from different devices, then the measurement process can be performed, but temporal errors occur between acquisitions leading to low shape data accuracy
Solution Approach 1:
The patent merges the image data acquisition and machine coordinate acquisition into a unified processing system. The image processing device receives both image data from the imaging device and machine coordinates from the NC machine tool, then performs integrated processing to calculate shape data, eliminating the synchronization issues caused by separate device operations
Solution Approach 2:
The patent introduces a timing information management mechanism as an intermediary. The system generates timing information for each acquisition and uses this timing data to synchronize and correlate image data with machine coordinates during processing, ensuring accurate temporal alignment without requiring direct hardware synchronization
2Adaptability or versatility
If separate devices are used for image acquisition and coordinate control, then system flexibility is maintained, but temporal errors vary between acquisitions reducing measurement accuracy
Solution Approach 1:
The timing information acts as an intermediary that bridges separate acquisition systems. By recording and processing timing data for each image and coordinate acquisition, the system maintains flexibility in using separate devices while ensuring accurate temporal correlation during integrated processing
Solution Approach 2:
The system implements feedback through timing information tracking. The timing data generated during acquisition feeds back into the processing stage, allowing the system to compensate for temporal variations and align data from separate devices accurately
Data Source
AI summary
A processing system includes a machine tool including a measuring unit which outputs measurement information for calculating a shape of a processing object, a control unit which generates position information related to a position of the measuring unit at the time of measuring the processing object and outputs the generated position information and a generation time signal indicating a time at which the position information is generated, an acquisition unit which acquires the output position information and the generation time signal, an estimation unit which estimates the time at which the position information is generated on the basis of a time at which the acquisition unit acquires the generation time signal, and a shape calculation unit which calculates a shape of the processing object on the basis of the measurement information, the position information, and the time estimated by the estimation unit.