Rudder system segmented positioning precision control method based on three-point circle center method

Abstract

The invention discloses a rudder system segmented positioning precision control method based on a three-point circle center method, and the method specifically comprises the following steps: installing a rudder hole cross target on an upper rudder hole of a rudder system segment, and installing three reflector plates at the edge of a lower rudder hole; establishing a three-dimensional coordinate system; hoisting and fixing the rudder system section by section on a shipway; when the rudder system subsection is welded and fixed with a slipway, adopting a total station to respectively measure thetarget center three-dimensional coordinates of the rudder hole cross target and the three-dimensional coordinates of the three reflecting sheets at the edge of the lower rudder hole, and correcting the positioning deviation of the rudder system subsection according to the measurement result. According to the method, the deviation direction and trend of the segmented rudder holes of the rudder system can be quickly judged, the segmented field positioning precision of the rudder system is improved, and the workload of subsequent correction and the like caused by precision deviation is reduced.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a method for controlling segmental positioning accuracy of a rudder system based on a three-point circle center method. Background technique [0002] In the process of ship construction, segmental positioning of the stern rudder system is an important and difficult precision control problem in the precision control of the whole ship. Due to the continuous optimization of ship design and market demand, high-efficiency rudders have become the mainstream design of modern ships. Its characteristic is that the rudder system has no margin and has extremely high requirements for positioning accuracy. It is a segmented assembly and welding process, which may cause the center of the upper and lower rudder holes of the rudder system to deviate, and the intersection degree of the rudder system center and the shaft system center is out of tolerance, which will affect the accuracy of the...

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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

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