Lofting method for stern molded line containing shaft wrapping plate
A technology of stern and cladding, which is applied in the field of lofting and smoothing of hull lines, which can solve problems such as increasing the workload of line lofting, difficulty in achieving satisfactory smoothing effects for stern lines, and rapid changes in curves, etc.
Active Publication Date: 2021-07-06
CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY
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Problems solved by technology
Conventional stern moldings have small curvature and smooth transition of curve changes, while shaft cladding area moldings have large curvature and rapid curve changes. For example, the shaft cladding moldings and stern moldings are taken as a whole and three-way smooth lofting is carried out at the same time , not only will increase the workload of stakeout, but at the same time, the molded line in the shaft cladding area will interfere with the normal trend of the stern molded line, making it difficult to achieve a satisfactory smoothing effect for the stern molded line
Method used
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[0037] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0038] In the description of the present invention, it should be understood that unless otherwise specified and limited, the terms "installation", "connection" and "connection" used in the present invention should be interpreted in a broad sense, for example, it can be a fixed connection, or It can be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specif...
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The invention relates to the technical field of ship body molded line lofting and fairing, and discloses a lofting method for a stern molded line containing a shaft wrapper sheet, which comprises the following steps: independently lofting and fairing a stern main ship body molded line, and drawing a theoretical shaft wrapper sheet molded line on the basis of a stern rib molded line graph obtained after lofting, and meanwhile, adding auxiliary lines and tangent point lines according to the curve characteristics of the axle cladding plate, a space curve for controlling the appearance characteristics of the axle cladding plate is smoothed in advance, and internal rib type smoothing is carried out after the basic outline of the axle cladding plate is determined. According to the lofting method for the stern molded line containing the shaft wrapping plate, the lofting working difficulty is reduced while the lofting precision is guaranteed, the lofting working efficiency is improved, and basic conditions are provided for follow-up lofting and modeling work of the shaft wrapping plate.
Description
technical field [0001] The invention relates to the technical field of lofting and smoothing of ship hull moldings, in particular to a method for lofting moldings of a stern including a shaft cladding plate. Background technique [0002] The hull shape line is the theoretical hull curve obtained by the upstream design unit based on the experimental design of the mother ship and the ship model pool. The shape line obtained at this stage focuses on meeting the needs of the overall performance calculation, so there will be local uneven areas , if the hull is built according to this type of line, it will cause the hull plate to be uneven and unsightly, and it will lead to an increase in the navigation resistance of the underwater part. Therefore, before the shipyard designs and builds a ship, the first step is to perform three-way smoothing on the hull shape line provided by the design institute, and obtain the smooth shape line diagram and shape line data, which will be used fo...
Claims
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Login to View More IPC IPC(8): B63B73/00
CPCB63B73/00
Inventor 曾凡强陈炬培黄庆锋
Owner CSSC HUANGPU WENCHONG SHIPBUILDING COMPANY