Machine Axis Speed Calibration via Dual-Element Reference
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Solution Overview
Problem
Existing measuring systems face complexity in aligning measured values with object locations, and the speed of the measuring instrument affects determination accuracy, where faster measurements are less precise and slower measurements are more precise.
Innovation Solution
A device for calibrating or normalizing the speed of a machine's movement axis, using a measuring setup with two measuring elements at a defined distance, where the measuring instrument moves between them to determine the actual spatial distance and speed, allowing precise measurement alignment and speed normalization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the measuring instrument moves faster to improve productivity, then the measurement speed increases, but the determination accuracy of measuring points deteriorates
Solution Approach 1:
The patent applies preliminary action by performing speed calibration before actual measurements are taken. A calibration object with known geometric features is measured first to determine the actual speed of the measuring instrument, which is then used to normalize subsequent measurement data. This preliminary calibration allows the system to achieve both high measurement speed and accurate determination by compensating for any speed variations through the calibration factor.
2Measurement precision
If the measuring instrument moves slower to improve determination accuracy, then the measurement precision increases, but the measurement time increases
Solution Approach 1:
The patent implements feedback by using the calibration results to normalize subsequent measurement data. The actual speed determined during calibration is fed back into the measurement process as a correction factor. This allows the system to maintain fast measurement speeds while compensating for any inaccuracies through the feedback loop, thereby achieving both high precision and short measurement time.
3Device complexity
If the speed of the measuring instrument is not calibrated, then the measurement process is simpler, but the alignment of measured values with object locations becomes complex
Solution Approach 1:
The patent applies self-service by having the measuring instrument automatically perform calibration using a calibration object with known geometric features. The system autonomously determines its own speed characteristics and generates correction factors without external intervention. This self-calibration process, while adding some initial complexity, ultimately simplifies the overall measurement process by eliminating the need for manual alignment procedures and ensures accurate alignment of measured values with object locations.
Data Source
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AI summary
The invention relates to a device for calibrating or standardising the speed of a movement axis of a machine, the device having a measuring instrument and a measuring assembly, the measuring assembly having a first and a second measuring element, the first and the second measuring elements being provided at a defined and known distance from one another on the measuring assembly, the measuring assembly being designed to be arranged on a workpiece receptacle of the machine, and the measuring instrument being designed to perform measurements with a known target frequency. The device is designed such that, when the device is arranged on the machine and the measuring instrument is moved at a known target speed of a movement axis of the machine from the first measuring element to the second measuring element, the device, in particular the measuring instrument, interacts with the respective measuring element, or the device, in particular the measuring instrument, detects the respective measuring element and in so doing determines an interaction date or a detection date. The device is designed to detect, starting from the first interaction date or detection date to the second interaction date or detection date, a number of measurements of the measuring instrument. The device is also designed to determine a spatial distance between two different measurements of the measuring instrument for the known target speed of the movement axis of the machine on the basis of the detection of the number of measurements.