Propeller pitch three-dimensional measurement process method

Abstract

The invention discloses a propeller pitch three-dimensional measurement process method. The method comprises the following steps of A, surveying and marking a straight line on a platform, B, vertically placing a propeller in the center area of the straight line, C, marking out radiation included angles at different radiuses of each blade by utilizing pitch gauge survey and marking the radiation included angles, D, erecting a total station, collecting head and tail end points of a surveyed straight line, and establishing a space coordinate system, E, measuring the circle center space position of the upper end surface of the propeller hub as a pitch measurement reference, F, pasting a reflector plate at the position of the measuring point, and sequentially measuring the three-coordinate dataof the radiation included angle at different radiuses of each blade, which is firstly surveyed and marked by a pitch gauge, G, correcting the identification survey and marking precision, H, measuringthe spatial position of the radiation included angle identification at different radiuses of each blade, and I, calculating the local pitch and the section pitch of the propeller. High-precision pitch measurement of the fixed pitch propeller, the variable pitch propeller and the adjustable pitch propeller can be realized, the outsourcing cost of shipyard propeller pitch measurement is reduced, the ship repair period is shortened, and the working efficiency is remarkably improved.

Description

technical field [0001] The invention relates to a technological method for three-dimensional measurement of the pitch of a propeller. Background technique [0002] At present, the methods for measuring the pitch of propellers mainly include traditional manual measurement, scanner measurement and camera measurement. Traditional manual measurement needs to make corresponding measurement tooling for different propellers. Because the whole process is manual operation, the measurement accuracy is poor, and the measurement steps are cumbersome. This seriously affects the repair cycle of ships and increases the cost of ship repair. During the measurement process of scanners and cameras, the positions of measurement points are automatically identified by the equipment, and there is no substantial accurate measurement of the target during the measurement process, and there are measurement deviations. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provi...

AI Technical Summary

Problems solved by technology

[0002] At present, the methods for measuring propeller pitch mainly include traditional manual measurement, scanner measurement and camera measurement. Traditional manual measurement needs to make corresponding measurement tooling for different propellers. Since the whole process is manual operation, the measurement accuracy is poor and the measurement steps are cumbersome. Seriously affected the ship repair cycle and increased ship repair costs; during the measurement process of scanners and cameras, the positions of the measurement points are automatically identified by the equipment, and there is no substantial and accurate measurement of the target during the measurement process, and there are measurement deviations

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