The invention relates to the technical field of shipbuilding, and discloses a lofting and unfolding method of a beveled barrel structure, which comprises the following steps: S1, making a side view and a normal sectional view; s2, obtaining a short-axis projection line HV in the side view; s3, obtaining a short-axis cross-section projection line H1V1 and a long-axis cross-section projection line P1W1 from the normal cross-section graph; s4, obtaining a long-axis projection line PW from the side view; s5, making a vertical line of the center line of the cylinder through the point P and the point W to obtain a line segment QT; s6, equally dividing the normal sectional view, projecting each equal division point to the line segment QT to obtain equal division projection points, and expanding the bevel opening contour to obtain expansion points; s8, repeating the step S7, and fairly connecting all the expansion points; and S9, acquiring a prime line expansion point, and connecting the two prime line expansion points to complete the lofting expansion drawing of the bevel cylinder. The short-axis projection line and the long-axis projection line are taken as references to realize the lofting and unfolding of the cylinder, so that the precise lofting and unfolding of any beveled cylinder structure are realized, and the cylinder is convenient to mount.
本发明涉及船舶建造技术领域,公开了一种斜口筒体结构的放样展开方法,包括以下步骤:S1,制作侧视图和法向截面图;S2,在侧视图中得到短轴投影线HV;S3,法向截面图得到短轴截面投影线H1V1和长轴截面投影线P1W1;S4,侧视图得到长轴投影线PW;S5,过点P和点W做筒体中心线的垂线得到线段QT;S6,对法向截面图进行等分,各等分点投影至线段QT得到等分投影点,对斜口轮廓展开得到展开点;S8,重复S7,光顺连接各展开点;S9,获取素线展开点,连接两个素线展开点,完成斜口筒体的放样展开图。以短轴投影线和长轴投影线为基准实现筒体的放样展开,实现了任意斜口筒体结构的精准放样展开,便于筒体安装。
Lofting and unfolding method of beveled opening cylinder structure
一种斜口筒体结构的放样展开方法
2024-02-02
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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