Method for manufacturing micropores in metal plate

Abstract

The invention discloses a method for manufacturing micropores in a metal plate. The method comprises the following steps: S1, feeding the metal plate in a feeding direction into a lower die, and aligning the metal plate with the edge of the lower die; S2, aligning the edge of an upper die with the edge of the lower die, wherein the upper die is provided with unit blade parts distributed in a uniform dot matrix mode, and the lower die is provided with a plurality of strip-shaped blade parts perpendicular to the feeding direction. and S3, applying a vertical punching force and the like to the lower die and the metal plate by the upper die. According to the method provided by the invention, the stamping technology is improved; compared with an existing single-row punching, micro-feeding and single-row shearing forming mode, the method improves machining efficiency by several times to dozens of times, and the production cost is greatly reduced. Meanwhile, single-row punching is changed into face-to-face punching, the die is stressed evenly, the rejection rate is low, the requirements for matched processes related to the die are relatively low, and large-batch production, application and popularization are better facilitated.

Description

technical field [0001] The invention relates to the technical field of producing micropores on metal plates, and more specifically, to a method for producing micropores on metal plates. Background technique [0002] The currently used micro-perforated plate sound-absorbing structure has a much wider sound-absorbing frequency band than other resonant sound-absorbing structures. However, due to low processing efficiency, the output is small, the cost is high, and the price is high, so it cannot be widely used. . [0003] In the prior art, the Chinese patent with the publication number CN102439239B discloses a method for making micropores in metal sheets, which adopts single-row punching, micro-feeding, and single-row shearing to form micropores. The efficiency is very low, resulting in a higher product price, which cannot be widely used. Contents of the invention [0004] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a metho...

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Problems solved by technology

[0002] The currently used micro-perforated plate sound-absorbing structure has a much wider sound-absorbing frequency band than other resonant sound-absorbing structures. However, due to low processing efficiency, the output is small, the cost is high, and the price is high, so it cannot be widely used.

[0003] In the prior art, the Chinese patent with the publication number CN102439239B discloses a method for making micropores in metal sheets, which adopts single-row punching, micro-feeding, and single-row shearing to form micropores. The efficiency is very low, resulting in high product prices and not being widely used

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