Projeto de protótipo para calibração de torquímetros

Abstract

With the constant development of the instruments used for measuring torque and the growing need to maintain a standard of product quality is essential to verify that the instrument (wrench) is calibrated within acceptable tolerances, thus becoming an important field of study on the assessment of forces. From this perspective, the Metrology Laboratory of Mechanics UFC (Lametro) found that few laboratories perform calibrations in the northeastern region of wrenches and aware of this fact proposed this work, which aims at developing a prototype to make the calibration of torque wrenches in Lametro. It was first developed for a small range of torque (0.5 Nm to 125 Nm) for reasons of initial cost of construction. The methodology was the design of components, choice of materials to be used in the construction, modeling and virtual simulation and prototype construction. With the construction of the torque gauge, one can evaluate the uncertainties associated with the calibration procedure, identifying the main sources of error and estimating the possible uncertainties associated with each. The development of the prototype calibration of torque wrenches proved viable enabling the calibration of instruments with various bands in a single nominal efficient measurement equipment, portable and easy operation.