The present invention relates to a five-shaft
image measurement device used for measuring the film hole shape and position parameters. The five-shaft
image measurement device can be used to obtain theshape and position parameters, such as the apertures of the film hole characteristics on a hollow
turbine blade in an aero-engine, the axis space angle, the hole central coordinates, etc. thereby really describing the actual state of each film hole, and comprehensively evaluating the
processing quality of each film hole. The five-shaft
image measurement device of the present invention is based onthe
machine vision measurement principle, adopts an illumination mode of combining the backward illumination and the forward illumination, changes the space position and attitude between the measuredhollow
turbine blade and an
image acquisition device via the linkage of three linear shafts and two rotating shafts, and determines the alignment accuracy of the
image acquisition device and the measured film holes based on the shape characteristics of the acquired film hole images. The five-shaft image
measurement device of the present invention is compact in structure and high in
measurement precision, is convenient to use, and can measure automatically, thereby providing the technical means of detecting the
processing quality of the film holes with high precision, high efficiency and highreliability. The five-shaft image
measurement device also can be used as a universal five-shaft image
measurement device.