Research On Aesting Of The Hole Roundness Of Cylindr And Generatrix Straightness By The Double-Layer Laser Beams

According to the domestic testing different length to diameter ratio of cylindrical hole roundness and bus straightness methods urgent demand, this paper based on the cone lens beam transmission characteristics and laser holographic technology, respectively from the geometrical optics and physical optics Angle, puts forward two kinds of new type double laser detection cylindrical hole roundness and bus straightness geometric method and holographic method.Through the theoretical derivation, won two kind of detection method general cone lens cone Angle, lighting beam aura width, and for measuring hole parts of inner hole size and the relationship between the length of the model theory expression and tested for cylindrical hole exist taper of the relationship between the various parameters of the model theory expression; Use Zemax software to two kinds of detection methods for the simulation; And introduces a kind of the test system mainly optical element cone lens of new processing method; And then completed the geometric method of relevant tests, using least square method to deal with the data, obtained the length and80mm diameter16mm for measuring cylindrical hole roundness and straightness of the bus.