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Metallic frame and method of making the same

Inactive Publication Date: 2008-07-03
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]An exemplary metallic frame is formed by forging and precise machining of a workpiece. The forging process is performed before the precise

Problems solved by technology

However, a machining period is very long using the typical frame manufacturing process because the milling process is time consuming.
Thus, a production efficiency of the method is low.
In addition, a cost of milling is high, adding to a higher production cost of the frame.
Furthermore, during coarse milling and precise milling, a significant amount of material is removed from the workpiece and wasted.
This also adds to the higher production cost of the frame.
Therefore, a hardness of the frame is unduly low.

Method used

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Embodiment Construction

[0020]The present invention provides a metallic frame and a method of making the same. The metallic frame usually employed in electronic devices such as mobile phones, personal digital assistants, and laptop computers.

[0021]Referring to FIG. 1, the method of making the metallic frame includes the following:[0022](1) Feeding workpiece process 12: Referring to FIG. 2, a workpiece 20 is provided by cutting a steel sheet. A size of the workpiece 20 is determined according to a size and a shape of the frame design. In the embodiment, the workpiece 20 is made of SUS304I stainless steel;[0023](2) Forging process 14: Referring to FIG. 3, the workpiece 20 is forged several times by a forging equipment (not shown) with a forging mold (not shown), thereby yielding a preform 40. In the forging process 14, the workpiece 20 is managed without being heated by external heat. After the forging process 14, the preform 40 has a size and a shape similar to but a little different from the frame design. ...

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Abstract

An exemplary metallic frame (60) is formed by forging and precise machining of a workpiece. The forging process is performed before the precise machining process, a hardness of the frame is larger than that of the workpiece and a surface roughness Ra of the frame reaches about 6.4 microns. The present invention further provides a method of making the frame. The method includes as follows: feeding workpiece process (12) for providing a workpiece (20); forging process (14), the workpiece be forged to form a preform (40); and precise machining process (18), the preform be precisely machined to form a frame.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a metallic frame and a method of making the same.[0003]2. Discussion of the Related Art[0004]Nowadays, various electronic devices such as mobile phones, personal digital assistants, and laptop computers are popular and used in a variety of situations. The electronic devices are not only desired with multifunctionality, but also desired being robustness and for aesthetics. Therefore, metal is widely used in frames of the electronic devices.[0005]One typical method of making metallic frame (herein typical frame manufacturing process) includes coarse milling of a workpiece and then precise milling of the workpiece. The frame made from the typical frame manufacturing process has a high precision in size and shape and a low surface roughness. However, a machining period is very long using the typical frame manufacturing process because the milling process is time consuming. As an example, the...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21D22/00
CPCB21K23/00
Inventor HOU, LINGXIE, GUANG-HUIYANG, JINGWANG, YONG-GUANGYI, LING
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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