TWI361736B - Metallic housing and manufacturing method of the same - Google Patents

Description

1,361,736, 100, October 14th, nuclear replacement page, invention description: [Technical field of invention] [0001] The present invention relates to a metal casing and a manufacturing method thereof, and particularly to a portable electronic device The metal casing of the device and a manufacturing method thereof. [Prior Art]

[0002] With the rapid development of information technology, portable electronic devices such as mobile phones, PDAs (Personal Digital Assistants) and notebook computers are widely used, and the appearance and feel of these electronic device casings are becoming more and more popular. More and more 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. In the prior art, in order to improve the surface appearance of the metal casing, the surface is generally painted and painted to decorate Enhance the beauty of its appearance.

[0003] However, the surface formed by spraying paint and the like has poor surface abrasion resistance, the surface is extremely easy to wear, and the painted paint is easily peeled off, thereby affecting the appearance of the product, failing to satisfy the consumer's requirements for the appearance of the product, and The surface formed by the method is smooth and slippery and causes damage to the product. If the surface of the metal casing is patterned by spraying paint, the processing will be more complicated. SUMMARY OF THE INVENTION [0004] In view of the above, the present invention provides a metal casing having an aesthetically pleasing surface and a non-slip surface. [0005] Further, the present invention provides a method of fabricating the metal casing which is simple in processing. 096101388 Form No. A0101 Page 3 of 13 1003379515-0 1361736 ,______t

October 14, 1100, according to the positive _ page I

[0006] The present invention provides a metal outer hub having a knurling formed by a diamond engraving technique on the surface thereof, which is milled in a first direction on the surface of the metal casing by a cutter and interleaved along the first direction. The second direction is milling on the surface of the metal casing. [0007] The present invention provides a metal casing manufacturing method, the manufacturing method comprising the following steps: [0008] stamping a metal sheet to form a metal shell; [0009] grinding the metal shell;

[0010] Polishing the metal casing; [0011] Applying a diamond engraving technique to form a knurl on the surface of the metal casing. [0012] Compared with the prior art, the surface of the metal casing forms a knurling, which not only makes the appearance of the product beautified, but also improves the slip resistance of the outer casing of the product. Compared with the prior art, the metal casing is simple in manufacturing method and convenient to operate, and the surface of the metal casing is obtained by diamond engraving technology to make the product beautiful, and at the same time, the metal casing surface has anti-slip effect. [Embodiment] [00W] The present invention provides a metal casing, which is preferably applied to a mobile phone. [0015] The surface of the metal casing has a knurled appearance, which can be successively performed by diamond engraving techniques. The milling is performed twice in two diagonal directions on the surface of the metal casing to form the appearance of the knurling composed of a plurality of diamonds. The s-metal metal shell material may be any one or a combination of copper, aluminum, stainless steel and chin. The metal shell material of the preferred embodiment of the present invention is 096101388. Form No. A_ % 4 13 s 1003379515-0 1,361736 100 years. October i4 day shuttle is the #页铭合金. [0016] The manufacturing process and manufacturing method of the metal casing having the knurled surface, please refer to FIG. 1 and FIG. 2 together, and specifically include the following steps: [0017] The metal sheet is stamped, and the process is to stamp the metal sheet through the stamping machine. The metal casing 10 has a thickness of about 0.60 mm. In this embodiment, the metal casing 10 is a rectangular casing. [0018] grinding the formed metal casing 10, the process of which is the metal casing

10 is placed in a container containing a ceramic body having a shape of a sphere or the like, and an abrasive is added thereto, and the surface of the metal casing 10 to be processed is vibrated by vibrating the ceramic body to remove the surface thereof. Oil and burrs and other impurities.

[0019] polishing the polished metal casing 10 in a process of applying a lubricant to the polishing cloth wheel, and then rubbing the surface of the metal casing 10 to be processed by a high-speed rotating polishing cloth wheel to generate a high temperature.至1. 1 μπι。 The surface of the metal shell 10 to be processed to produce a slight plastic deformation to remove the scratches on the surface of the surface of the metal shell 10 to improve the surface roughness and brightness of the surface of the metal shell 10 to 0. 08~0. 1 μπι. [0020] The metal casing 10 is cleaned, and the metal casing 10 may be cleaned by using a degreasing agent (such as an alkaline solution of NaOH or the like) to remove impurities such as oil, dust, and lubricant on the metal casing 10. The surface is clean and shiny. The metal casing 10 is processed by diamond engraving technology, and the diamond engraving 096101388 engraving technology can be edited by NC (Numerical Control) machine tool. Form number A0101 Page 5 of 13 page 1003379515-0 [0021] 1361736 October 100 On the 14th, the replacement page was corrected, and the tool and workpiece running track were controlled to realize the process of patterning the workpiece by the tool. [0022] The specific process of the processing is to mount the metal casing 10 on the processing machine

A cutter head 20 having a diameter of 100 mm is disposed above the processing machine, and a cutter 30 is mounted on the peripheral wall of the cutter disc 20. During the NC machining, the metal casing 10 is driven by the processing machine to the lower speed of the high-speed rotating tool 30, and the high-speed rotating tool 30 is used to mill the surface of the metal casing 10. The spindle rotation speed of the cutter head 20 is about 2300 r/min. The cutter 30 has a depth of about 0.1111111 and its precision is controlled between -0.0211111]~0.02111111. When the first feeding is performed, the cutter head 20 drives the cutter 30 to perform a linear feeding motion along a diagonal direction of the surface of the metal casing 10, and the surface of the metal casing 10 is firstly milled to form the surface of the metal casing 10. The openings are in the same direction and are arranged in a substantially arc-shaped pattern. During the second infeed, the cutter 20 drives the cutter 30 to perform a linear feed motion along the other diagonal direction of the surface of the metal casing 10 to perform the second milling of the surface of the metal casing 10. Referring to Figure 3, the two milling knives are interlaced to form a metal casing 10 having a knurling pattern 40. [0023] The metal casing 10 is anodized, the process of the metal casing 10 is placed in an anode treatment tank, the anode treatment tank contains a concentration of about 0. 2g / ml sulfuric acid solution of the electrolyte, the metal The outer casing 10 serves as an anode and is subjected to electrolysis under an applied current for about 30 to 40 minutes to form a porous oxide film on the surface of the metal casing 10. In order to obtain a metal casing 10 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 casing 10 is placed in the dyeing tank, the metal casing 10 can be dyed to achieve Need color. After that, the 096101388 Form No. A0101 Page 6 / Total 13 Page 1003379515-0 1.361736 October 14, 2014 Correction Replacement Sheet Metal Case 10 is placed in a tank containing a sealing liquid for reaction 'to make a sealing liquid The resin suspended particles are implanted into the oxide film to form a hard film on the surface thereof to improve the corrosion resistance and wear resistance of the metal casing 10, and to make the surface of the metal casing 10 more glossy. [0024] It can be understood that the difference in the processing parameters set by the numerically controlled machine tool during processing may cause the shape and depth of the knurling 40 to be different. For example, the feed amount or the diameter of the cutter head 20 may make the shape of the knurling 40 different. Of course, the cutter head 20 may also have a diameter equal to or smaller than the width of the metal casing 10. The metal casing 10 made by this method is applicable not only to mobile phones, but also to other portable electronic devices and other fields such as MP3, MP4, digital cameras, and computer case casings. [0025] It can be understood that the cutter 30 can be an impact-resistant, high-strength artificial diamond cutter, or can be processed by other alloy cutters. [0026] In addition, the metal casing 1〇 may also have other shapes, such as a circular outer casing, etc., the cutter head 20 drives the cutter 3 to be double-milled along the surface of the metal casing 1 • [0027] It can be 'and can be sharpened multiple times along the two staggered directions. The above description of the invention is in accordance with the invention patent requirements, and the patent is filed in accordance with the 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 variations in accordance with the spirit of the present invention. It is covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart of a metal casing; FIG. 2 is a schematic view of a machining path of a metal casing; 096101388 Form No. A0101 笫7 pages/13 pages 1003379515-0 1361736 100 years 1 〇β 14th Nuclear Replacement Page [0030] Fig. 3 is a schematic view of a metal casing having a knurling pattern. [Main component symbol description] [0031] Metal case: 10 [0032] Cutter: 20 [0033] Tool: 30 [0034] Barn pattern: 40

096101388 Form NumberΑ0101 Page 8 of 13 1003379515-0

Claims (1)

1361736 100 years. October 14th, the nuclear replacement page VII, the scope of application for patents: 1. A metal casing, the surface of the metal casing has a knurling pattern formed by diamond engraving technology, the diamond engraving technology uses the tool along the first The direction is milled on the surface of the metal casing and milled along the surface of the metal casing in a second direction that is interleaved with the first direction. 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, aluminum, stainless steel, and titanium. 4. The metal casing of claim 1, wherein the metal casing surface on which the knurl is formed further comprises an anodized film layer. 5. The metal casing of claim 1, wherein the knurling is a diamond shape. 6. A method of manufacturing a metal casing, comprising the steps of: stamping a metal sheet to form a metal casing; and grinding the metal casing; Polishing the metal casing; applying a diamond engraving technique to form a knurl on the surface of the metal casing. 7. The method of fabricating a metal casing according to claim 6, wherein the metal casing is any one or a combination of copper, iron, aluminum, stainless steel, and titanium. 8. The method of fabricating a metal casing according to claim 6, wherein the manufacturing method further comprises the step of rinsing the metal casing with an alkaline solution after the polishing treatment. 9. The method of manufacturing a metal casing according to claim 6, wherein the step of forming the knurling comprises using the cutter in the first direction to the metal casing 096101388. Form number Α0101 Page 9 / Total 13 pages 1003379515-0 1361736 On October 14, 100, the shuttle was replacing the surface of the page and sharpened the surface of the metal casing in a second direction that was interlaced with the first direction. 10. The method of fabricating a metal casing according to claim 9, wherein the metal casing is a rectangular metal casing, and the first direction and the second direction are directions along a diagonal of the metal casing, respectively. 11. The method of manufacturing a metal casing according to claim 6, wherein the manufacturing method further comprises the step of anodizing the metal casing after engraving a diamond, and dyeing the metal casing after the anode treatment. The steps of processing. 12. The method of manufacturing a metal casing according to claim 11, wherein the manufacturing method further comprises the step of sealing the metal casing after the dyeing treatment. 096101388 Form No. A0101 Page 10 of 13 1003379515-0