The determination of accuracy of test gear wheel for aeronautical dual - power path gear before heat treatment

Manufacture of aircraft gearbox elements requires control of gear geometric parameters at different stages of technological process. In case of measurement of gear wheels using modern technologies based on numerical machines, measurement process is based on processing of numerical data obtained by measurement using coordinate measuring machines. The goal of this paper is to present the measurement process of gears, using coordinated optical scanner ATOS II TripleScan by GOM, equipped with a turntable. The aim of this study is to develop and execute the analysis accuracy of the geometry of the gear of aeronautical dual-power path gear after the roughing operation using optical coordinate measuring methods. Executed research will enable the detection of errors occurring in the machining process and to determine the value of founded the machining allowance finishing in relation to the CAD model. Using coordinate measuring technique, one can specify a set of methods and procedures for the designation of the complex dimensions of physical objects and transform them into a computer program space of coordinate measuring devices. On this basis, it is possible to determine the accuracy of the gear wheel as the workpiece prior to heat treatment. The results will be the basis to determine the effect of heat treatment on changes in the geometry of the gear and the benchmark for determining the correctness of the finishing.