A METHOD AND OPTICAL DEVICE FOR MEASURING THE DIMENSIONS OF A BODY, IN PARTICULAR OF A TURBINE ROTOR

摘要

An optical measuring device (1) for measuring the dimensions of radial blades (19) of a turbine rotor (16) includes a laser detection unit (12) movable in a direction (x) orthogonal to the axis (18) of the turbine, and including a laser (5) which generates a laser beam (6) directly orthogonal both to the direction of translation and the axis of the turbine, and a sensor (7) having two adjacent sensitive areas (8a, 8b); the device (1) co-operates with a machine tool (15) to perform a final working of the blades (19) of the turbine and, in particular, uses the information obtainable from the interference figures generated on the two areas of the sensor when the laser beam is at least partly intercepted by the blades to generate control signals which are used to automate the operations for working the machine tool and moving the detection unit.