Hole opening method for curved plate

Abstract

The invention relates to the technical field of ship construction, and discloses a curved plate trepanning method which comprises the following steps: drawing a trepanning side line at a to-be-trepanned position of a to-be-processed plate; wherein the plate to be processed is a straight plate; the tapping side line is divided into at least two sections to be cut, and a gap bridge section is arranged between every two adjacent sections to be cut; cutting is carried out along the to-be-cut sections until all the to-be-cut sections are cut; the plate to be machined is machined and pressed to form a curved plate; and all the gap bridge sections are cut, and trepanning is completed. According to the invention, the tapping position can be accurately positioned, the machining precision is high, the plate profiling and shaping effect is good, the curved surface is not deformed, the working efficiency is improved, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of ship construction, in particular to a method for opening holes of curved panels. Background technique [0002] At present, the openings on the curved surface structures such as the base of the marine curved cylinder body and the large curvature plate are usually made after the plate is pressed and then assembled by the perimeter reinforcement structure, and finally the curved surface structure (curved plate) is opened. , but the disadvantage of this is that it is difficult to locate the opening position on the curved structure on site, the opening needs to be manually cut and the quality is not high and the parts may be damaged, and the opening needs to be polished manually. If the hole is opened before processing, the curved plate opening will be deformed or partially torn at the opening due to local extrusion stress after the equipment is processed, and the processing and forming are poor. SUMMARY OF ...

AI Technical Summary

Problems solved by technology

[0002] At present, the openings on curved surface structures such as marine curved cylinder bases and large curvature plates are usually made after the plates are press-formed and then assembled with a perimeter reinforcement structure, and finally the curved surface structures (curved panels) are opened. , but the disadvantage of this is that it is difficult to locate the opening position on the curved surface structure on site, the opening needs to be cut manually, the quality is not high and the parts may be damaged, and the opening needs to be polished manually

If the hole is opened before processing, the hole of the curved panel is processed by the equipment due to the local extrusion stress, which will cause the part to be distorted or partially torn at the hole, and the processing is poor.

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