200822983 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種金屬外殼及其製作方法，特別係關 於一種應用於攜帶型電子裝置之金屬外殼及其製作方法。 【先前技術】 心著資訊科技之迅速發展，攜帶型電子裝置如行動電 話、PDA ( Personal Digital Assistant，個人數位助理）及 筆記本電腦等應用日益普遍，這些電子裝置外殼之美觀程 度及手感也越來越受到人們關注與重視。目前，金屬外殼 廣泛應用於這些攜帶型電子裝置中，所述裝置之外殼對外 硯及耐磨性要求較高，習知技術中爲改善金屬外殼表面外 觀，一般應用表面喷塗烤漆等方法進行裝飾，以加強其 觀之美感。 惟’通過喷塗烤漆等方法形成之表面耐磨性較差，極 之^剝落，影響產品外觀’不能滿^消費者對産 而，藉由該方法形成之表面光滑，容易滑脫而 = 若要藉由喷塗烤漆使金屬外殼表面具有圖 案化紋專，將會使加工工序更加複雜。 【發明内容】 鑒1於以上缺點，本發明提 屬外殼。 作供—種表面美觀、防滑之金 種加工工序簡 另，本發明提供一 之方法。 單之製作該金屬外殼 本發明提供一種金屬外殼 其表面形成有凹凸紋路之 200822983 木紋紋理。 本發明提供一種該金屬外殼製作方法，該 括以下步驟： 夂 杰^ 衝壓金屬板材形成一金屬外殼； 對金屬外殼表面進行研磨； 對金屬外殼表面抛光處理； 應用木紋雕刻技術對該金屬外殼表面加工。 相較習知技術，該金屬外殼表面形成有凹凸紋路之木 紋，不僅使産品外觀得到裝飾美化，而 耐磨性及防滑性。 “產品外殼之 相較習知技術’該金屬外殼製作方法加工簡單，便於 操作’藉由木紋雕㈣術使得該金屬外殼表面獲得 凹 =文路之木紋’使産品更料自然賴，㈣也使ς屬外 威表面具有防滑及耐磨之作用。 【實施方式】 該金屬外殼較佳實施方式 本發明提供一種金屬外殼 應用於行動電話上。 該金屬外殼表面具有木紋紋理之外觀，該木紋可藉由 木紋雕刻技術純兩次對卫件表面進行雕刻加工，去^工 件表面多餘材料，並對卫件表面進行修整，由於兩次:削 ::之間間距存在差異並且逆向交錯，從而形成木紋紋理 =外硯。該金屬外殼材料可採用銅、鐵、銘、不錄鋼及欽 種或其組合之合金，本發明優選實 材料絲合金。 發月“實衫式之金屬外殼 7 200822983 該具有木紋表面金屬外殼之製作流程請參閱圖i，製 作方法具體包括以下步驟： 對金屬板材進行衝壓，其過程係將金屬板材經衝壓機 床衝壓、拉伸邊緣，再切除其多餘邊角形成一金屬外殼， 該金屬外殼厚度約爲0.60mm。 對成型之金屬外殼進行研磨，其過程係將該金屬外殼 放入一容器中，該容器内裝有外形爲圓球等形狀之陶瓷 體，於其中加入研磨劑，藉由震動陶瓷體對該金屬外殼待 加工表面進行震動撞擊，以去除其表面之油污及毛刺等雜 質。 對經研磨之金屬外殼進行抛光處理，其過程係於抛光 布輪上塗抹潤滑劑後，再將該金屬外殼待加工表面經過盥 高速旋轉之㈣布輪摩擦產生高溫，使該金屬外殼待加^ 表面產生輕度塑性變形，以去除其表面劃痕紋路，提高該 金屬外殼表面之平整及光亮度，使其_度達到㈣〜〇1 // m 〇 對該金屬外殼進行清洗 八川肌阳削、如險性溶液BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal casing and a method of fabricating the same, and, in particular, to a metal casing applied to a portable electronic device and a method of fabricating the same. [Prior Art] With the rapid development of information technology, portable electronic devices such as mobile phones, PDAs (Personal Digital Assistants) and notebook computers are becoming more and more popular. The aesthetics and feel of these electronic device casings are also coming. The more people are concerned and valued. At present, the metal casing is widely used in these portable electronic devices, and the casing of the device has high requirements for external squeezing and wear resistance. In the prior art, in order to improve the appearance of the surface of the metal casing, the surface is generally painted and painted. To enhance the beauty of its view. However, the surface formed by spraying paint and other methods is inferior in abrasion resistance, and the extreme peeling of the product affects the appearance of the product. 'Cannot be full of consumers' production. The surface formed by this method is smooth and easy to slip off. By spraying the lacquer to make the surface of the metal casing patterned, the processing process will be more complicated. SUMMARY OF THE INVENTION In view of the above disadvantages, the present invention is a housing. The present invention provides a method for providing a beautiful surface and non-slip gold processing process. The present invention provides a metal casing. The present invention provides a metal casing having a 200822983 wood grain texture having a concave and convex surface formed thereon. The invention provides a method for manufacturing the metal casing, which comprises the following steps: 夂杰^ 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 embossed grain, which not only makes the appearance of the product decorative, but also wear resistance and slip resistance. "The outer shell of the product is better than the conventional technology." The metal shell manufacturing method is simple to process and easy to operate. "With the wood grain carving (four) technique, the surface of the metal shell is obtained with the concave wood grain of the text road, so that the product is more natural, (4) The present invention also provides a metal casing for use on a mobile phone. The metal casing surface has the appearance of a wood grain texture, and the metal casing has a non-slip and wear-resistant effect. The wood grain can be engraved by the wood grain engraving technique twice to remove the excess material on the surface of the workpiece, and the surface of the guard is trimmed. Because of the difference between the two times: the difference between the two sides is reversed and reversed. , thereby forming a wood grain texture = outer casing. The metal casing material may be an alloy of copper, iron, inscription, non-recording steel, or a combination thereof, and the present invention is preferably a solid material wire alloy. Shell 7 200822983 Please refer to Figure i for the manufacturing process of the metal shell with wood grain surface. The manufacturing method includes the following steps: Stamping the metal sheet, the process is Sheet metal punching machine bed by stamping, drawing the edges, then cut the excess edges which form a metal shell, the metal shell thickness of about 0.60mm. Grinding the formed metal casing by placing the metal casing in a container containing a ceramic body having a shape of a sphere or the like, into which an abrasive is added, and the metal is vibrated by vibrating the ceramic body The surface to be processed of the outer casing is subjected to a shock impact to remove impurities such as oil stains and burrs on the surface. The polished metal casing is polished, and the process is applied to the polishing cloth wheel to apply the lubricant, and then the surface of the metal casing to be processed is subjected to high-speed rotation (four) cloth wheel friction to generate high temperature, so that the metal casing is to be added. The surface is slightly plastically deformed to remove the surface scratch lines, improve the smoothness and brightness of the surface of the metal casing, so that the _ degree reaches (4) ~ 〇 1 / m 〇 the metal casing is cleaned and the muscle is cut. Dangerous solution
NaOH等）對該金屬外殼進行清洗，以去除該金屬外殼上 之油污、粉塵及潤滑劑等雜f，使其表面清潔及光亮。 應用木紋雕刻技術對該金屬外殼進行加工，該木纹雕 :技術可利用數控（NC，Numedcalc。伽υ機床編程， —刀具及工件運行執迹加以控制，從而實現刀具對工件進 行圖紋加工之過程。木紋雕刻加工具體原理係利用刀具對 表面進行加工，由於刀具褒夹於具有一定直捏之刀盤 8 200822983 ' 外緣進行銑削，所以僅經過一次進給便可對位於刀盤下方 - 之工件進行兩次銑削。第一次銑削主要切去工件表面多餘 之材料，同時於工件表面形成具有開口方向一致、依次排 列大致呈拋物線形狀之紋路，第二次銑削主要係對第一次 銑削之紋路進行修整，於工件表面形成與第一次紋路形狀 相反、依次排列大致呈抛物線形狀之紋路，即其抛物線形 狀之開口與第一次形成之開口方向向反，兩次銑削刀紋之 間間距存在差異並且逆向交錯，從而形成木紋紋理之外觀。 該加工之具體過程係將該金屬外殼裝夾於加工機臺 上，於該加工機臺上方設有一直徑爲100mm之刀盤，於刀 盤週壁上裝夾有一刀具。當進行數控加工時，由加工機台 帶動該金屬外殼勻速行至高速旋轉之刀具下方對該金屬外 殼表面進行銑削，刀盤之主轴轉速約2300r/min，該刀具下 刀深度約0.16mm，其精度控制約於-0.02mm〜0.02mm之 間，同時該加工機台帶動該金屬外殼做進給運動，進給量 % 爲640mm/min，經過高速旋轉之刀具對該金屬外殼表面第 一次銑削，使該金屬外殼表面形成具有開口方向一致、依 次排列大致呈抛物線形狀之紋路，由於刀盤上之刀具繞主 轴作轉動，而該金屬外殼相對刀具移動，且因刀盤直徑大 於該金屬外殼之寬度，因此於該金屬外殼移動過程中，該 刀盤上之刀具可第二次銑削該金屬外殼，經過第二次銑削 形成與第一次紋路形狀相反、依次排列大致呈抛物線形狀 之紋路，兩次銑削刀紋之間間距存在差異並且逆向交錯， 從而形成具有凹凸木紋紋理之金屬外殼。 9 200822983 ’ 對該金屬外殼進行陽極處理，其過程係將該金屬外殼 -放置於陽極處理槽中，該陽極處理槽中盛裝有濃度約 〇.2g/ml硫酸溶液之電解液，將該金屬外殼作爲陽極，於外 加電流作用下進行電解約3〇〜4〇分鐘，使該金屬外殼表面 形成有夕孔之氧化物薄膜。爲得到多種色彩之金屬外殼， 而對其進行染色，由於該氧化物薄膜之凹孔具有吸附染料 之作用，當該金屬外殼放入染色槽中時，可將金屬外殼染 色，以達到所需顏色。然後將該金屬外殼放入裝有封孔液 之谷槽中進行反應，使封孔液中之樹脂懸浮顆粒植入氧化 物薄膜中，使其表面形成硬膜，以提高金屬外殼之耐腐蝕 性及耐磨性，且使金屬外殼表面更具光澤亮度。 可以理解，數控機床於加工時設置之加工參數不同都 會使木紋之形狀、深度有所不同，如進給量或刀盤直徑不 同會使木紋之形狀有所不同，當然，該刀盤直徑也可等於 或小於該金屬外殼之寬度。由該方法製作而成之金屬外殼 :不僅適用於行動電話，也可以應用於其他攜帶型電子裝置 及其他領域中。 可以理解，該刀具可以採用耐衝擊，高強度之人造鑽 石刀具，也可以採用其他合金刀具進行木紋雕刻加工。 综上所述，本發明符合發明專利要件，爰依法提出專利申 請。惟，以上所述者僅為本發明之較佳實施方式，本發明 之範圍幷不以上述實施方式為限，舉凡熟習本案技藝之人 士援依本發明之精神所作之等效修飾或變化，皆應涵蓋於 以下申請專利範圍内。 ' 200822983 ，【圖式簡單說明】 . 圖1係金屬外殼製作流程圖。 【主要元件符號說明】 無 11The metal casing is cleaned by NaOH or the like 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, which can be controlled by numerical control (NC, Numedcalc, gamma machine programming, tool and workpiece running track) to realize tool pattern processing on the workpiece. The process of wood grain engraving is based on the tool to machine the surface. Since the tool is clamped on the outer edge of the cutter head 8 200822983 ', it can be placed under the cutter head only after one feed. - The workpiece is milled twice. 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 is mainly for the first time. The grain of the milling is trimmed, and the surface of the workpiece is formed opposite to the shape of the first line, and the substantially parabolic shape is sequentially arranged, that is, the opening of the parabolic shape is opposite to the direction of the opening formed by the first time, and the milling is performed twice. The spacing between the spaces is different and reversely staggered to form the appearance of the grain texture. The process is to clamp the metal casing on the processing machine, and a cutter head having a diameter of 100 mm is arranged above the processing machine, and a cutter is mounted on the peripheral wall of the cutter disc. When the numerical control processing is performed, the processing machine is processed. The surface of the metal casing is milled under the tool which drives the metal casing to the high speed rotation. The spindle speed of the cutter head is about 2300r/min, and the cutter depth is about 0.16mm, and the precision is controlled by about -0.02mm~0.02mm. At the same time, the processing machine drives the metal casing to perform the feeding movement, the feeding amount is 640 mm/min, and the surface of the metal casing is first milled by the tool rotating at a high speed, so that the surface of the metal casing has an opening direction. Consistently and sequentially arranging a substantially parabolic shape, since the tool on the cutter head rotates around the main shaft, the metal housing moves relative to the cutter, and since the cutter disc diameter is larger than the width of the metal outer casing, during the movement of the metal outer casing The tool on the cutter head can mill the metal casing for the second time, and after the second milling, the shape is opposite to the first texture, and the arrangement is roughly thrown. The shape of the line shape, the spacing between the two milling knives is different and reversely staggered to form a metal casing with a concave-grained wood grain texture. 9 200822983 'The metal casing is anodized, the process is to place the metal casing - In the anode treatment tank, the anode treatment tank contains an electrolyte having a concentration of about 2 g/ml of sulfuric acid solution, and the metal shell is used as an anode, and electrolysis is performed for about 3 to 4 minutes under the action of an external current. The surface of the metal casing is formed with a thin film of oxide film. In order to obtain a metal casing of various colors, the metal film is dyed, and the concave hole of the oxide film has the function of adsorbing dye, when the metal casing is placed in the dyeing tank. The metal casing can be dyed to achieve the desired color. The metal casing is then placed in a trough containing a plugging liquid to carry out a reaction, so that the resin suspension particles in the sealing liquid are implanted into the oxide film, so that The surface is formed with a hard film to improve the corrosion resistance and wear resistance of the metal casing, and to make the surface of the metal casing more glossy. It can be understood that the different processing parameters set by the CNC machine during machining will make the shape and depth of the wood grain different. For example, the feed amount or the diameter of the cutter head will make the shape of the wood grain different. Of course, the diameter of the cutter head is different. It may also be equal to or smaller than the width of the metal casing. The metal casing made by this method is applicable not only to mobile phones but also to other portable electronic devices and other fields. It can be understood that the tool can be made of impact-resistant, high-strength artificial diamond tools, or other alloy tools for wood grain engraving. In summary, the present invention complies with the requirements of the invention patent, and proposes 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. ' 200822983, [Simple description of the diagram]. Figure 1 is a flow chart of the metal casing. [Main component symbol description] None 11