Design lofting method for double-inclined jig frame

Abstract

The invention relates to the technical field of shipbuilding, and discloses a design lofting method for a double-inclined jig frame, which comprises the following steps: 1, obtaining a waterline diagram according to a rib profile diagram; 2, drawing a perpendicular bisector and an offset line on the waterline diagram; 3, determining a base plane of the jig frame, obtaining jig frame data, and making a cutaway view of a perpendicular bisector and an offset line of the perpendicular bisector; and 4, according to the real length of each line of the waterline diagram, the cutaway view and the rib profile diagram, obtaining a rib plate mounting angle and rib line scribing data. According to the design lofting method for the double-inclined jig frame, a proper jig frame base plane is obtained again through conversion of a projection plane, various positioning lineation data and assembly angle samples are obtained, the segmentation precision can be effectively guaranteed, on-site positioning lineation is facilitated, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of shipbuilding, in particular to a design and lofting method of a double-slant frame. Background technique [0002] The tire frame is an important special process equipment in the sectional assembly of the hull. It is used as a sectional outer mold in the manufacture of the hull. Its surface line conforms to the outer surface of the sectional. Under good conditions, some special tire frames also have the function of maintaining the accurate shape of the segment. For segments with high requirements on the hull shape, it is necessary to take anti-deformation measures for the tire frame to control the deformation of the segment within the range of construction accuracy. On-site manufacturing The graphics and data required for the tire frame shall be provided through tire frame stakeout. The graphics include the segmented tire frame diagram and the cross-section tire frame layout diagram. The data mainly includ...

AI Technical Summary

Problems solved by technology

[0003] Most of the tire frames can be set out through the ship production design software to define the relevant parameters of the tire frames, and then generate the graphics and data required for on-site manufacturing of the tire frames. In some sections of the hull near the bow, due to the large transverse slope of the rib line, There is also a large difference in the longitudinal direction. For this kind of segment, even if the cross section is designed as a double beveled tire frame, there will be a situation where the cross line cannot penetrate the entire outer plate (such as Figure 1 As shown), this will bring great difficulty to the positioning and marking of the outer panel on site, and also affect the positioning and marking accuracy

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