研究目的
To characterize the real 3D shape of flexible parts when they are clamped to ensure suitable stiffness for machining processes, aiding to define the machining path to improve the precision of the process.
研究成果
The research demonstrates the importance of simulation processes for defining the best measurement scenario for extrinsic calibration and the influence of the method used on the precision of measurements. The geometric performance of the drives is identified as a significant factor affecting the accuracy of the measurement system.
研究不足
The study does not focus on the integration of the intelligent fixture with the machine tool nor presenting employed registration procedures. The geometric performance of the drives influences the precision of the global system measurements.
1：Experimental Design and Method Selection:
The methodology involves kinematic modelling for the extrinsic calibration of a laser line profile sensor integrated in an intelligent fixture.
2：Sample Selection and Data Sources:
A test piece simulating a part of the train's carriage structure is used.
3：List of Experimental Equipment and Materials:
Includes a laser line triangulation sensor, a calibrated sphere, and an intelligent fixture with 3 degrees of freedom.
4：Experimental Procedures and Operational Workflow:
The process involves scanning the test piece with the intelligent fixture and comparing it with an external metrological frame.
5：Data Analysis Methods:
The analysis includes sensitivity analysis and comparison of methods for extrinsic calibration.
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