Hole opening tool for pipe holes on inclined wall of ship

Abstract

The invention relates to the technical field of shipbuilding tooling, particularly to a hole opening tool for pipe holes on an inclined wall of a ship. The hole opening tool for the pipe holes on the inclined wall of the ship comprises a positioning hole, a supporting rod and a scribing cutting rod, wherein the supporting rod is perpendicularly connected with the positioning rod and can rotate around the positioning rod, the scribing cutting rod is perpendicularly connected with the supporting rod and can slide in a direction parallel with the positioning rod, the distance between the scribing cutting rod and the positioning rod can be adjusted, and the end portion of the scribing cutting rod is provided with a scribing and cutting device. The hole opening tool can be mounted at site and be positioned at the end of a pipe or an inclined wallboard according to conditions of the site through selection, is not only capable of scribing or cutting in real time but also greatly improves the accuracy of hole opening, and is simple in structure, capable of being used repeatedly, high in hole opening efficiency and low in costs.

Description

technical field [0001] The invention relates to the technical field of shipbuilding tooling, in particular to a hole-drilling tool for pipe passage holes on a ship's inclined wall. Background technique [0002] The scribing openings for the elliptical holes used for the passage of pipes in traditional ships’ pipe sides and inclined bulkheads are all based on calculated theoretical data, and the size and diameter of the theoretical ellipse data are used to mark the line on site, or the calculated ellipse theoretical data is pre-made. Make a sample, then take the sample to the site for proofing, and then use the drawn ellipse to drill holes on site. However, due to the large error between the calculated theoretical data and the slanted plate after the actual ship is manufactured, the theoretical data is accurate but inconsistent with the actual slanted plate after production, or the model does not match the actual slanted plate, often resulting in excessive elliptical openings...

AI Technical Summary

Problems solved by technology

However, due to the large error between the calculated theoretical data and the slanted plate after the actual ship is manufactured, the theoretical data is accurate but inconsistent with the actual slanted plate after production, or the model does not match the actual slanted plate, often resulting in excessive elliptical openings. Too big, too small or ellipse is seriously inconsistent, and cannot fit well with the outer diameter of the pipe, especially the outer plate, which often leads to rework and the scrapping of the entire outer plate, which needs to be replaced with a new plate for reassembly and welding

The original calculation of the elliptical opening data cannot be eliminated due to the error in the actual production of the inclined plate. Not only is the theory or on-site marking after proofing labor intensive and low in efficiency, the opening of the elliptical hole is not ideal, and the sample cannot be reused many times, and the cost is high. In particular, it is easy to cause the outer plate to be completely replaced due to the out-of-tolerance opening of the elliptical hole

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