Measurement methodology for coordinate measuring machines - CMM - Stoco, Wanderson;de Lima, André;Torrezan, Hamilton
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Measuring shape errors on coordinate measuring machines is a process that is widely used nowadays due to the ease and speed with which the results of a given characteristic can be obtained. The aim of this work was to establish a rule for determining the minimum number of points to be touched when measuring the roundness of various parts. For the case study, measurements were taken on a part manufactured exclusively for this work, where the initial objective was achieved through calculations and comparisons. Based on the results of the measurements, a rule was defined which consists of…mehr

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Produktbeschreibung
Measuring shape errors on coordinate measuring machines is a process that is widely used nowadays due to the ease and speed with which the results of a given characteristic can be obtained. The aim of this work was to establish a rule for determining the minimum number of points to be touched when measuring the roundness of various parts. For the case study, measurements were taken on a part manufactured exclusively for this work, where the initial objective was achieved through calculations and comparisons. Based on the results of the measurements, a rule was defined which consists of touching 1 point/mm of the calculated perimeter, considering the nominal diameter specified in the drawing. The use of the rule allows for greater confidence in the results obtained, as it establishes a standard for circularity measurements in various diameters and a reduction in measurement costs, as the time spent on this process is considerably reduced (72.9% in the case studied) depending on the number of points chosen by the metrologist.
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Autorenporträt
Wanderson Stoco has a degree in Mechanical Engineering, an MBA in Project Management and a master's degree in Production Engineering. He works as General and Technical Manager at one of Brazil's largest private metrology laboratories and is a specialist in the Dimensional and Viscosity areas on the external assessment board of Inmetro's General Accreditation Coordination.