Coordinate Metrology : Accuracy of Systems and Measurements by Jerzy A. Sladek

By Jerzy A. Sladek

This publication specializes in powerful equipment for assessing the accuracy of either coordinate measuring platforms and coordinate measurements. It usually experiences on unique learn paintings performed through Sladek’s group at Cracow college of Technology’s Laboratory of Coordinate Metrology. The booklet describes the implementation of alternative tools, together with synthetic neural networks, the Matrix process, the Monte Carlo strategy and the digital CMM (Coordinate Measuring Machine), and demonstrates how those tools may be successfully utilized in perform to gauge the accuracy of coordinate measurements. additionally, the e-book contains an advent to the speculation of dimension uncertainty and to key innovations for assessing size accuracy. All tools and instruments are provided intimately, utilizing appropriate mathematical formulations and illustrated with a variety of examples. The publication fills an enormous hole within the literature, supplying readers with a sophisticated textual content on a subject that has been speedily constructing in recent times. The ebook is meant for grasp and PhD scholars, in addition to for metrology engineers operating at commercial and learn laboratories. It not just presents them with an exceptional historical past for utilizing present coordinate metrology tools; it's also intended to encourage them to strengthen the state of the art applied sciences that might play an immense function in helping caliber development and innovation in complex manufacturing.

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Example text

In coordinate measurements error sources are specified, and the examples are presented in Fig. 1. 4. However, higher values can be adopted due to the specificity of tools and measuring systems or because of difficulties in measurement realization. 5. However, the primary principle is here: the smaller the limit value is, the greater the cost of the measurement. The final choice of the upper limit values should be made with full awareness of the fact that the regulation of the production process may be insufficient.

4 Coordinate Measurement Uncertainty and Regulatory Requirements 41 This standard is dedicated to geometric quantity measurements and is based on the indications contained in [21]. The ISO 14253-1 standard introduces the concept of specification that here means the tolerance of an object property (dimension). According to GPSs (ISO/TR 14638:1995, GPSs—Masterplan) [36, 86] it contains the decision rules that require narrowing the tolerance by the measurement uncertainty to prove conformity with specifications, and extending the tolerance by the measurement uncertainty to prove nonconformity with the specifications.

Uncertainty ranges are areas where the compliance or noncompliance cannot be determined. Measurement uncertainty always acts against the one who performs a measurement, and therefore presents the judgment of compliance or noncompliance. In the ISO 14253-2 [87] there is a suggestion of an algorithm that enables the determination of geometric quantity measurement uncertainty based on the acceptance of an iteration-determined uncertainty budget (called PUMA, procedure of uncertainty management), Fig.

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