TWI361735B - Metallic housing and manufacturing method of the same - Google Patents

Description

1361735 October 14, 2014 Revision Replacement Page 6 Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a metal casing and a method of fabricating the same, and more particularly to a portable electronic device Metal casing and its making method. [Prior Art]

[0002] With the rapid development of information technology, portable electronic devices such as mobile phone 'PDA (Personal Digital Assistant) and notebook computers are becoming more and more popular, and the appearance and feel of these electronic device casings are becoming more and more popular. Received attention and attention. At present, the metal casing is widely used in these portable electronic devices, and the outer casing of the device has high requirements on appearance and wear resistance. In the prior art, the surface appearance of the metal casing is improved. To enhance the beauty of its appearance. [〇〇〇3] However, the surface formed by spraying paint and other methods has poor surface abrasion resistance, and it is easy to know and peel off, which affects the appearance of the product, cannot meet the requirements of the consumer for the appearance of the product, and is formed by the method. The surface is smooth and slips easily, causing damage to the product. If the surface of the metal shell is patterned by spraying paint, the processing will be more complicated. SUMMARY OF THE INVENTION The present invention provides a metal casing having an aesthetically pleasing surface and a non-slip surface. [0006] [0006] Another embodiment of the present invention provides a method of fabricating the metal casing. The invention provides a metal casing, the surface of which has a wood grain engraving technique form number A0101 1003379504-0 1361735 [0007] [0009] [0010] [0012] [0013] [0013] 100 years. October 14 The wood grain texture of the embossed road formed by the day, the wood grain engraving technique uses the tool to engrave the surface of the workpiece twice, and the spacing between the two milling knives is different and reversely staggered. The invention provides a method for manufacturing the metal casing, the manufacturing method comprising the steps of: stamping a metal sheet to form a metal shell; grinding the surface of the metal shell; polishing the surface of the metal shell; applying the wood grain engraving technique to the surface of the metal shell machining. Compared with the prior art, the surface of the metal casing is formed with the wood grain of the concave and convex lines, which not only makes the appearance of the product beautified, but also improves the wear resistance and the anti-slip property of the outer casing of the product. Compared with the prior art, the metal casing manufacturing method is simple and easy to operate, and the wood grain engraving technology enables the surface of the metal casing to obtain the wood grain with the embossed texture, so that the product is closer to the natural appearance, and the metal casing surface is also provided. Anti-slip and wear resistance. [Embodiment] The present invention provides a metal casing, which is applied to a mobile phone. The surface of the metal casing has a wood grain texture, and the wood grain can be processed twice by a wood grain engraving technique. The surface is engraved, the excess material on the surface of the workpiece is removed, and the surface of the workpiece is trimmed. Due to the difference in the spacing between the two milling knives and the reverse staggering, the wood grain form number A0101 is formed. Page 4 of 11

[0015] 095144320 1003379504-0 1361735 100 years. October 14th, according to the replacement page, the appearance of the texture. The metal casing material may be an alloy of one or a combination of copper, iron, aluminum, stainless steel and titanium, and the metal casing material of the preferred embodiment of the invention is an aluminum alloy. [0016] Please refer to FIG. 1 for the manufacturing process of the metal shell with a wood grain surface. The manufacturing method specifically includes the following steps: [0017] stamping the metal sheet, the process is to punch the metal sheet through the punching machine and stretch the edge. 5 ππη。 The thickness of the metal shell is about 0. 60 ππη.

[0018] grinding the formed metal casing by placing the metal casing into a container containing a ceramic body having a shape of a sphere or the like, and adding an abrasive thereto by vibrating the ceramic body The surface to be processed of the metal casing is subjected to a shock impact to remove impurities such as oil stains and burrs on the surface thereof.

[0019] polishing the polished metal casing by applying a lubricant to the polishing cloth wheel, and then rubbing the surface of the metal casing to be processed by a high-speed rotating polishing cloth wheel to generate a high temperature, so that the metal casing The surface to be processed is slightly plastically deformed to remove the surface scratches and the surface of the metal casing is smoothed and the brightness is increased to 0.08~0,1 " m 〇[0020] Cleaning, the metal casing is cleaned with a degreasing agent (such as alkaline solution NaOH, etc.) to remove impurities such as oil, dust and lubricant on the metal casing to make the surface clean and bright. The metal casing is processed by wood grain engraving technology. The wood grain engraving 095144320 technology can be programmed by NC (Numerical Control) machine tool. Form No. A0101 Page 5 of 11 1003379504-0 [0021] 1361735 October 100 14th revised replacement page

, control the tool and the workpiece trajectory'; thus realize the process of the tool to process the workpiece. The specific principle of wood grain engraving is to use the tool to machine the surface of the workpiece. Since the tool is clamped to the outer edge of the cutter head with a certain diameter, the workpiece located under the cutter head can be milled twice only by one feed. . The first milling mainly cuts off the excess material on the surface of the workpiece, and at the same time forms a pattern with a uniform opening direction and a substantially parabolic shape on the surface of the workpiece. The second milling mainly repairs the texture of the first milling to the workpiece. The surface is formed in a pattern substantially parallel to the shape of the first line, and is arranged in a substantially parabolic shape, that is, the opening of the parabolic shape is opposite to the direction of the opening formed by the first time, and the spacing between the two sharpened lines is different and reversely staggered. , thereby forming the appearance of the wood grain texture. [0022] The specific process of the processing is to clamp the metal casing on the processing machine.

A cutter head having a diameter of 100 mm is disposed above the processing machine, and a cutter is mounted on the peripheral wall of the cutter head. When the machine is being machined, the machine tool is driven by the machine to rotate the metal casing to the surface of the metal casing. The spindle is rotated at a depth of about 2300 r/min. The precision control is between -0.02mm and 0.02inin. At the same time, the processing machine drives the metal casing to perform the feed motion. The feed rate is 640 mm/min, and the surface of the metal casing is first through the high-speed rotating tool. Sub-milling, the surface of the metal casing is formed with a pattern having a uniform opening direction and a substantially parabolic shape in sequence. Since the cutter on the cutter head rotates around the main shaft, the metal casing moves relative to the cutter, and the diameter of the cutter disc is larger than the metal. The width of the outer casing, so that during the movement of the metal casing, the tool on the cutter head can be second time 095144320 Form No. A0101 Page 6 / Total 11 Page 1003379504-0 1361735 October 14, 2014 Shuttle Replacement Page Milling The metal casing. After the second milling, the pattern is formed in a substantially parabolic shape opposite to the first texture shape, and the spacing between the two milling cutters is There are differences and reverse staggered to form a metal casing with a concave convex grain texture. [0023] performing anodizing on the metal casing, the process of which is to place the metal casing

And the anode is filled with an electrolyte having a concentration of about 0.2 g/ml of sulfuric acid solution, and the metal casing is used as an anode, and electrolysis is performed for about 30 to 40 minutes under an applied current to make the metal. A porous oxide film is formed on the surface of the outer casing. In order to obtain a metal shell of various colors, it is required to be dyed. Since the concave hole of the oxide film has the function of adsorbing dye, when the metal shell is placed in the dyeing tank, the metal shell can be dyed to achieve the desired color. . Then, the metal casing is placed in a tank filled with the sealing liquid to carry out a reaction, so that the resin suspended particles in the sealing liquid are implanted into the oxide film, and the surface thereof is formed into a hard film to improve the corrosion resistance of the metal casing. Sex and abrasion resistance, and make the surface of the metal casing more shiny.

[0024] It can be understood that the different processing parameters set by the numerical control machine during processing may make the shape and depth of the wood grain different. For example, the shape of the feed or the diameter of the cutter head may make the shape of the wood grain different, of course, The cutter diameter may also be equal to or less than the width of the metal casing. The metal casing made by this method is not only suitable for mobile phones, but also can be applied to other portable electronic devices and other fields. [0025] It can be understood that the tool can use an impact-resistant, high-strength synthetic diamond cutter, or other alloy cutters for wood grain engraving. 095144320 Form No. A0101 Page 7 of 11 1003379504-0 1361735 10 0. October 14 Press the replacement page [0026] In summary, the present invention conforms to the invention patent 'to', and file a patent application according to law . However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or changes in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0027] FIG. 1 is a flow chart of a metal casing. [Main component symbol description]

[0028] No

1003379504-0 095144320 Form Number A0101 Page 8 of 11

Claims (1)

1361735 100 years. October 14th revised replacement page VII. Patent application scope: ...· 1. A metal casing having a wood grain texture formed by wood grain engraving technology on the surface of the metal casing. The surface of the workpiece is engraved twice, and the spacing between the two milling knives is different and reversed. 2. The metal casing of claim 1, wherein the surface of the metal casing is formed with a porous oxide film. 3. The metal casing of claim 1, wherein the metal casing material is any one or a combination of copper, iron, inscription, non-recorded steel, and titanium. 4. The metal casing of claim 1, wherein the metal casing is anodized after being etched away. 5 . A method for manufacturing a metal casing, comprising the steps of: stamping a metal sheet to form a metal shell; grinding the metal shell; polishing the metal shell; and processing the metal shell by using wood grain engraving technology. 6. The method of manufacturing a metal casing according to claim 5, wherein the metal casing is any one or a combination of copper, iron, inscription, non-recording steel and titanium. 7. The method of producing a metal casing according to claim 5, wherein the metal casing is rinsed with an alkaline solution after polishing. 8. The method for manufacturing a metal casing according to claim 5, wherein the wood grain engraving technique uses a tool to engrave the surface of the workpiece twice, and the spacing between the two milling blades is different and reversely staggered. 9. The method for manufacturing a metal casing according to claim 5, wherein the metal casing is anodized after being carved, and after anodizing, 095144320 Form No. A0101 Page 9/11 Page 1003379504-0 1361735 100 years. October 14 B correction replacement page is used to dye the metal casing. The method of manufacturing the metal casing according to claim 9, wherein the metal casing is subjected to a sealing treatment after the dyeing treatment. 095144320 Form No. A0101 Page 10 of 11 1003379504-0