Rapid lofting method for perforating of oblique plate and pipeline on non-perpendicular faces

Abstract

Provided is a rapid lofting method for perforating of an oblique plate and a pipeline on non-perpendicular faces. The lofting method comprises the steps that an included angle theta between the oblique plate and a base plate and the diameter D of the pipeline penetrating through the oblique plate are measured; a coordinate system of the plane where the base plate is located is established, and a coordinate system of the plane where the oblique plate is located is established; the semi-major axis is equally divided according to the equal division number of the semi-major axis, and the length a of each equally divided section and the vertical distances between major axes at equal division points and an oval are labeled; and the circle center of the pipeline is labeled on the base plate, the perforating center of the oblique plate is obtained according to the circle center, then a relevant circle point O and oval points P<n> are drawn according the length a and the labeled vertical distances L<n> between the major axes at the equal division points and the oval and connected through an oval curve, and perforating is conducted. According to the rapid lofting method, for site constructors for pipeline mounting, obtaining is rapid, the size is clear and intuitive, operation is easy, and precision control over site construction is improved.

Description

technical field [0001] The invention relates to the rapid setting out of openings on slanted plates in shipbuilding, and is a rapid setting out method for pipe openings on inclined plates with non-vertical planes. Background technique [0002] In projects with many ships and piping systems, it is often encountered that the pipe and the steel plate intersect non-perpendicularly. In this case, it is necessary to open a through hole. However, the existing process is often time-consuming and laborious, and the error rate is high, which will slow down the process. production cycle and reduced product quality. [0003] Existing hole opening methods and their disadvantages: [0004] 1. For pipes with small diameter and length, directly adjust the pipe in place, and then drill holes according to the pipe projection, but often the holes cannot be drilled in place at one time, and secondary trimming is required to increase the construction strength. [0005] 2. For pipes with larger...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the current situation that the opening of slanted plates is mainly based on experience in the past, the cutting effect depends on the work experience of the construction personnel and the control of the cutting size is poor. Solve construction problems well, save manpower and material resources wasted due to rework caused by wrong construction, reduce energy consumption, and reduce costs

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