Evaluation and Optimization of Task-oriented Measurement Uncertainty for Coordinate Measuring Machines Based on Geometrical Product Specifications

Abstract

Measuring instruments are intended to be intelligent, precise, multi-functional and developing multidirectionally, scientific, and reasonable; the reliable evaluation of measurement uncertainty of precision instruments is also becoming more and more difficult, and the evaluation of the Coordinate Measuring Machines (CMM) measurement uncertainty is among the typical problems. Based on Geometric Product Specification (GPS), this paper has systematically studied the CMM uncertainty for evaluating the size and geometrical errors oriented toward measurement tasks, and thus has realized the rapid and reliable evaluation of the CMM uncertainty for task-oriented measurement. For overestimation of the CMM uncertainty for task-oriented measurements in the initial evaluation, a systematic optimization solution has been proposed. Finally, the feasibility and validity of the evaluation model and the optimization method have been verified by three different types of measurement examples of diameter, flatness and perpendicularity. It is typical and representative to systematically solve the problem of the CMM uncertainty for evaluating the measurement tasks targeted at dimensions and geometric errors, and the research contents can be effectively applied to solve the uncertainty evaluation problems of other precision instruments, which are of great practical significance not only for promoting the combination of modern uncertainty theory and practical applications but also for improving the application values of precision measurement instruments.

Identification of a Workpiece Temperature Compensation Model for Automatic Correction of the Cutting Process

“…Therefore, the first step in achieving the desired quality of the product in certain production situations is to specify the goal of production and then ensure the quality by considering all of the predefined requirements of the cutting system [ 2 ]. These requirements are important since the production environment changes dynamically, and control dependencies between product and production parameters cannot be described analytically.…”

“…Achieving high accuracy of the workpiece is one of the greatest challenges in industrial manufacturing [ 1 , 2 , 3 , 4 , 5 ]. In the case of production lines with high precision requirements, due to the narrow tolerances of each elementary process, high-specification and high-precision machines are required, resulting in high equipment costs [ 6 ].…”

GPS Application in the Design of Gearboxes

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A Practical Positioning Method in End-Plate Surface Distance Measurement with Nano-Meter Precision

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