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Drilling method on sheet metal

A metal sheet, a technology to be drilled, applied in the field of metal processing, to achieve the effect of smoothing the inner wall of the hole and improving the quality of the hole

Active Publication Date: 2014-06-04
文霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Drilling method on sheet metal

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specific Embodiment

[0022] The method for forming a hole on the metal plate of the embodiment of the present invention is used for specific experiments, wherein the material of the metal plate is aluminum alloy, the material of the auxiliary processing sheet is plastic, the area to be drilled is curved, and the first surface of the area to be drilled is curved. Attaching the auxiliary processing sheet, some experimental data are shown in the table below:

[0023]

[0024] As can be seen from the table, when the hardness value of the auxiliary processing sheet is greater than 0.7 times of the hardness value of the metal plate, and the rotating speed of the drill bit is greater than 8000 rpm, the first surface of the metal plate is almost free of burrs and has a high quality. Especially when the hardness value of the auxiliary processing sheet is 0.8 to 1.2 times that of the metal plate, the first surface of the metal plate is almost free of burrs and has a uniform appearance and higher quality. ...

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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...

Claims

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Application Information

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IPC IPC(8): B23B35/00
CPCB23B35/005B23B35/00
Inventor 文霞
Owner 文霞
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