A control method for segmental positioning accuracy of rudder system based on three-point circle center method

Abstract

The invention discloses a method for controlling the segmented positioning accuracy of a rudder system based on a three-point circle center method, which specifically includes the following steps: installing a rudder hole cross target on the upper rudder hole of the rudder system segment, and installing three target targets on the edge of the lower rudder hole reflectors; establish a three-dimensional coordinate system; hoist and fix the rudder system in sections on the berth; The three-dimensional coordinates of the three reflectors are used to correct the positioning deviation of the rudder system segment according to the measurement results. The invention can quickly judge the deviation direction and trend of the segmented rudder holes of the rudder system, improve the on-site positioning accuracy of the segmented rudder system, and reduce the workload of follow-up corrections caused by the accuracy deviation.

Description

technical field [0001] The invention relates to the technical field of ship construction, in particular to a rudder system segmented positioning accuracy control method based on a three-point circle center method. Background technique [0002] In the process of ship construction, the segmented positioning of the stern rudder system is a key and difficult precision control problem of the whole ship's precision control. Due to the continuous optimization of ship design and market demand, high-efficiency rudder has become the mainstream design of modern ships. Its characteristics are that the rudder system has no margin and requires extremely high positioning accuracy. It is a segmented welding process, which may cause the center of the upper and lower rudder holes of the rudder system to be offset, and the phenomenon that the intersection of the center of the rudder system and the center of the shaft system is out of tolerance will affect the installation accuracy of the slipw...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a rudder system segmental positioning accuracy control method based on the three-point circle center method to solve the problem that the concentricity of the upper and lower rudder holes will deviate when the rudder system is assembled and welded in segments, In the follow-up operation, there is no need to install a cross target on the lower rudder hole with the help of a hydraulic vehicle, and the deviation direction and trend of the rudder system segment rudder hole can be quickly judged, so that the corresponding welding process can be used in time to adjust the positioning deviation of the rudder system segment Make corrections while collecting changes in segmental auto-ignition settling

Images