Drilling method on sheet metal

Abstract

The present invention provides a drilling method on a sheet metal. The drilling method comprises the following steps that: the sheet metal and an auxiliary processing piece are provided, the sheet metal includes an area to be drilled, the area to be drilled include a first surface and a second surface relative to the first surface, and the hardness number of the auxiliary processing piece is 0.7 times larger than that of the sheet metal. The auxiliary processing piece fit on the first surface of the area to be drilled. Holes are drilled between the auxiliary processing piece and auxiliary processing piece through a drill head, and the rotate speed of the drill head is larger than 8000 r / min during the drilling course. The auxiliary processing piece is taken down from the area to be drilled. The drilling method on the sheet metal has the advantage that qualities of the holes are improved.

Description

technical field [0001] The invention relates to a metal processing method, in particular to a hole-making method on a metal plate. Background technique [0002] With the development of science and technology, the use of electronic products, especially the use of portable electronic products (such as notebook computers, tablet computers, mobile phones, MP3 players) has become very common. The shells of previous portable electronic products are mostly made of plastic, but as people's requirements for the appearance and durability of electronic products increase, more and more shells of products are made of metal materials. [0003] When using metal materials to prepare metal sheets, it is often necessary to form holes on the metal sheet. However, forming holes on the metal sheet is easy to produce burrs. If these burrs are not removed, it will affect the appearance and touch of the product, especially if the hole diameter is small. It is more difficult to remove the burr when...

AI Technical Summary

Problems solved by technology

[0005] However, these drilling techniques in the above-mentioned existing patented technologies are all used for printed circuit boards, and the material of printed circuit boards is mainly composed of high molecular polymers, such as epoxy resin; the material of epoxy resin and metal The nature of the material is different, so it is difficult to apply the drilling technology of the printed circuit board directly to the metal sheet, especially to the curved metal sheet

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