200821079 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種金屬管件製品之製造方法，尤其係 關於一種製造快速，成本低廉之金屬管件製品之快速製造 方法，適用於製造少量多樣的製品。 【先前技術】 傳統之金屬製品製造方法多係採用鑄造或是鍛造之方 式製造，然而，對於形狀較為複雜之金屬管狀製品，卻不 易採用鑄造及鍛造之方式成型；是以，目前針對形狀較為 複雜之金屬管狀製品，係另外採用管件液壓成型（ Hydroforming)方法製造。 管件液壓成型方法可大量減少製程道次，且其製品具 有貝置輕、剛性佳等優點，故目前多被應用於汽車、機車、 自仃車、航太…等工業領域中，用以大量製造工業產品； 然而’習知管件液壓成型方法所使用之成型模具仍係透過 CNC (C〇mputer Numerical C〇ntr〇1)工具機加工，利用 車削、銑削、研磨、放電、線割...等手段製造成型，此一 傳統之模具製造方式，-般而言，從模具之設計到完成， 通常需要數月的時間，不僅相當耗時，所費亦不貲。 受限於成型模具製造耗時與造價昂貴之問題，目前管 件液壓成型方法侷限於大量製造之工業產。口。，而注重外型 美感之高值化產品，多係採少量、但是多樣化之製造，若 其欲採用管件液壓成型方法製造，必須為各種式樣的產品 4 200821079 個別製作成型模具，熱以、$丄^ 勢必產生成型模具開發歷程過長、以 及成型模具製造費時，不符成本等問題。 【發明内容】 •、本發明之主要目的在於提供一種金屬管件製品之快速 製造方法’解決習知之技術無法適用於製造少量多樣化之 金屬管狀製品之問題。 為達到前揭之目的，本發明金屬管件製品之快速f造 方法包含有-快速造模程序以及—管件液壓成型程序;該 快速造模程序係先以人卫或機械方式製作出—包含有上模 及下模之模具原型’並將模具原型之上模與下模分別置入 /孝目中ϋ以加熱手段使其自砂箱中溶出，使砂箱中形成 對應該模具原型之上模與下模形狀之原型模穴，作為砂 模，再將常溫下呈固態之物質之高溫融溶液堯入砂模中， 待融熔液冷凝後即成為一成型模具之上模與下模，可打破 砂模將成型模具取出，纟中於上模與下模之對合面間形成 有相對應管件製品之模穴以及沖頭置人道；管件液壓程序 係將所準備之胚管置入成型模具之模穴中，並於上、下模 閉模後將沖頭置入沖頭置入道，令沖頭貼抵於胚管端部，、 於沖頭中並設有軸向液體填充道，之後將液體透過液體填 充道注入胚管内部，使胚管内部之壓力逐漸增加，便可使 胚：受壓產生對應於上模與下模之模穴之形變，成為一離 形管件；最後，將上模與下模分離以取出雛形管件。 本發明係利用快速造模程序製造成型模具，與習知管 5 200821079 件液壓成型領域係透過傳統方法製造成型模具相較，各 明成型模具之製造較為快速且成本低廉，二二= 成型程序可使胚管快速成型，並可成型出複雜且多樣化之 外型’故，透過本發明可快速製造出外型複雜且多樣化之 金屬管件製品’也因此本發明極為適用於少量多樣化之金 屬管件製品之製造領域，提供作為一製造過程快速、生產 成本低廉、且縮短開發時程之製造方法選擇。 【實施方式】 :參閱第-圖以及第二圖，本發明金屬管件製品之快 ^^法包^有―快速造模程序以及管件液壓成型程 序該快速造楔程序包含有： 一模具原型製作步驟（1 ^ . ^ ^ I丄1)，係使用可熔性材料成 型出包含有-上模與下模之模具原型； 一砂模製作步驟f 1 9、 v ( 1 2 )，將該模具原型之上模盥下 模为別裝填於砂箱中，作為砂模；以及 一澆鑄步驟（1 3 ) 溫'您t 將㊉溫下呈現固態之物質之高 概熔融液澆入砂模中，令 熔&， β ^具原型受高溫熔融液之高熱 ^ s, _ 、模具原型熔出後之模穴空間， 待熔嘁液於模穴中凝固後 # . . , , P成為一成型模具（30)之上 杈（3 1 )與下模（3 2、 (〇 η Λ ^ ^ ’並將砂模打碎取出成型模具 ，其中，於上 面（3 、3 1 )與下模（3 2 )之對合 d 1 3 ) ( 3 2 3 )間形# 士上 r 〇 9 . , $成有相對應之模穴（3 1 1 ) (d 2 1 )以及沖頭置入 (312) (322)與模穴 6 200821079 (3 1 1 ) ( 3 2 1 )連通； 該管件液壓成型程序（20)包含有： 一前置步驟（21)，係將一胚管（4〇)置入該成 型模具（30)之模穴（311)(321)，再令上、 下模（3 1 ) ( 3 2 )合模； 斤一閉模步驟（2 2 )，係將一密封塊（3 5 )塞置於 胚管（4 0 ) —端部，一沖頭（3 4 )對應地置入該成型 模具（3 0 )之沖頭置入道（3工2 ) ( 3 2 2 )中，並 緊抵於該胚管（4 〇 ) # 一端部，其中，沖頭（3 4 )中 設有軸向之液體填充道（341); 液壓成形步驟（2 3 ),係以液壓漸增手段將工作 液體經由該液體填充道（3 4 i)注人胚管（4 Q)内部， 並使冲頭（3 4 )持續地貼抵於胚管（4 〇 )端部，使該 胚管（4 0 )產生對隸模穴（3丄i ) ( 3 2 i )形狀 之形變，成為一雛形管件（4 〇，）；以及 脫拉步驟（2 4 )，係令沖頭（3 4 )及密封塊（3 脫離該成型模具（30)，以及令上模（31)與下 模（3 2 )分離，取出該離形管件（4 〇，）。 二述之管件液壓程序（2〇)尚可包含有一截除步驟 i z b )，該截除步驟（2 5 )係將所取出之離形管件（4 0 )之端部截去一適當長度，使該離形管件（4〇， 之端部於截去該段長度後呈現不同之態樣，請參 \该官件成品（40，，）係將第二圖所示之離形管件 〇 )之端部截去一適當長度後所形成，藉此該管件 200821079 成口“ 4 〇 ’）之一端部可呈向外擴張狀。 二述之上模…）與下模（32)之對合面 3)間尚可形成—密封境置 W 與模穴（311) (321)連通，(3 步驟（22)中便可將密封塊（35)由密封於閉模 14) (324)置入，將密封塊（3突入道（3 0 ) -端部。 b ) *置於胚管（4 上述快速造模程序（i 〇 )中 中，該模具原型之上模與下模—般而二作步驟（12) 模中’以分別製作出上模（3 i ) ;真… L、+、 〆、r犋〔3 2 )之砂模。 上述之模具原型製作步驟（"）中，該 型 二過人工方式或是以機械製作成，，例如以快速成型200821079 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to a method for manufacturing a metal pipe product, and more particularly to a rapid manufacturing method for manufacturing a fast and low cost metal pipe product, which is suitable for manufacturing a small variety of articles. . [Prior Art] Traditional metal product manufacturing methods are mostly made by casting or forging. However, for tubular metal products with complicated shapes, it is not easy to be formed by casting and forging. Therefore, the shape is complicated now. The metal tubular product is additionally manufactured by a tube hydroforming method. The pipe fitting hydroforming method can greatly reduce the number of process passes, and its products have the advantages of light shell and good rigidity, so it is currently used in industrial fields such as automobiles, locomotives, self-driving cars, aerospace, etc., for mass production. Industrial products; however, the forming molds used in the hydraulic forming methods of conventional pipe fittings are still machined by CNC (C〇mputer Numerical C〇ntr〇1) tools, using turning, milling, grinding, discharging, wire cutting, etc. Means of manufacturing and molding, this traditional mold manufacturing method, in general, from the design of the mold to the completion, usually takes several months, not only time-consuming, but also costly. Due to the problem of time-consuming and expensive manufacturing of the molding die, the current hydraulic forming method of the pipe is limited to industrial production of mass production. mouth. The high value products that pay attention to the aesthetics of the exterior are mostly made of small but diverse manufacturing. If they want to be manufactured by the hydraulic forming method of pipe fittings, it is necessary to make molding molds for various types of products 4 200821079, heat, $丄^ It is bound to produce problems such as excessive development of molding dies and time-consuming manufacturing of molding dies, which are not cost-effective. SUMMARY OF THE INVENTION The main object of the present invention is to provide a method for rapidly manufacturing a metal pipe product, which solves the problem that the conventional technology cannot be applied to the manufacture of a small number of diverse metal tubular articles. For the purpose of the foregoing disclosure, the rapid manufacturing method of the metal pipe product of the present invention comprises a - rapid molding process and a pipe fitting hydraulic forming program; the rapid modeling process is first produced by human or mechanical means - including The mold prototype of the mold and the lower mold 'puts the upper mold and the lower mold of the mold prototype into the filial piety respectively, and dissolves it from the sand box by heating means, so that the upper mold of the mold is formed in the sand box. The prototype cavity of the shape of the lower die is used as a sand mold, and the high-temperature melt solution of the solid material at normal temperature is poured into the sand mold, and after the melt is condensed, it becomes a mold and a lower mold of a molding die, which can be broken. The sand mold takes out the forming mold, and the cavity of the corresponding pipe product is formed between the upper surface of the upper mold and the lower mold, and the punch is placed in the human body; the hydraulic program of the pipe is used to place the prepared blank tube into the molding die. In the cavity, after the upper and lower molds are closed, the punch is placed into the punch and placed in the road, so that the punch is attached to the end of the embryo, and the axial liquid filling channel is arranged in the punch, after which Injecting liquid into the inside of the embryonic tube through the liquid filling channel, By gradually increasing the pressure inside the embryonic tube, the embryo can be deformed to form a deformed tube member corresponding to the upper mold and the lower mold; finally, the upper mold and the lower mold are separated to take out the prototype tubular member. The invention utilizes a rapid mold-making procedure to manufacture a molding die, and the manufacturing process of the molding die is relatively fast and low-cost compared with the conventional pipe-making process in the field of hydroforming of the conventional pipe 5 200821079. The preform is quickly formed and can be molded into a complex and diverse form. Therefore, the present invention can quickly produce a complicated and diversified metal pipe product. Thus, the present invention is extremely suitable for a small variety of metal pipe fittings. In the field of manufacturing of products, it is offered as a manufacturing method that is fast in manufacturing process, low in production cost, and short in development time. [Embodiment]: Referring to the first and second figures, the rapid manufacturing process of the metal pipe fittings of the present invention includes a "rapid modeling process" and a pipe forming hydraulic forming program. The rapid wedge forming process comprises: a mold prototyping step (1 ^ . ^ ^ I丄1), using a fusible material to form a mold prototype containing an upper mold and a lower mold; a sand mold production step f 1 9 , v ( 1 2 ), the mold prototype The upper mold is not filled in the sand box as a sand mold; and a casting step (1 3 ) is used to pour the high melt of the solid substance at ten temperatures into the sand mold. The fusion &, β ^ prototype is subjected to the high heat of the high-temperature melt ^ s, _, the cavity space after the mold prototype is melted, and the molten solution is solidified in the cavity after the process becomes a molding die ( 30) Upper 杈 (3 1 ) and lower mold (3 2, (〇η Λ ^ ^ ' and the sand mold is broken and taken out of the forming mold, wherein, above (3, 3 1 ) and the lower mold (3 2 ) The pair d 1 3 ) ( 3 2 3 ) is # 上上r 〇9 . , $ has the corresponding cavity (3 1 1 ) (d 2 1 ) and the punch is placed (312) (322 ) and mode 6 200821079 (3 1 1 ) ( 3 2 1 ) Connected; The pipe hydraulic forming program (20) comprises: a pre-step (21) for placing a blank tube (4〇) into the forming die (30) The mold hole (311) (321), and then the upper and lower molds (3 1 ) (3 2 ) are clamped; the kg-closed mold step (2 2 ) is to insert a sealing block (3 5 ) into the embryo Tube (40)-end, a punch (3 4) is correspondingly placed in the punch insertion path (3 2 2) (3 2 2 ) of the molding die (30), and is in close contact with a single end portion of the embryo tube (4 〇), wherein an axial liquid filling passage (341) is provided in the punch (34); a hydroforming step (23) is performed by hydraulically increasing the working fluid The liquid filling channel (3 4 i) is injected into the interior of the human embryo tube (4 Q), and the punch (3 4 ) is continuously attached to the end of the embryonic tube (4 〇), so that the embryo tube (40) is paired The deformation of the shape of the die hole (3丄i) (3 2 i ) becomes a prototype pipe (4 〇,); and the pulling step (2 4 ), the punch (3 4 ) and the sealing block (3 detachment) Forming the mold (30), and separating the upper mold (31) from the lower mold (32), and taking out the mold Pipe fittings (4 〇,). The hydraulic program (2〇) of the pipe fittings described above may further comprise a cutting step izb), the cutting step (25) is the end of the removed pipe fitting (40) The section cuts off an appropriate length so that the end of the pipe fitting (4〇, the end of the section is different after the length of the section is cut off, please refer to the finished product (40,,) is the second figure The end portion of the illustrated release tube member 截) is formed by cutting off an appropriate length, whereby one end of the tube member 200821079 "4 〇" can be outwardly expanded. The upper mold (...) and the lower mold (32) can be formed between the mating surfaces 3) - the sealing environment W is connected to the cavity (311) (321), and the sealing can be performed in the 3 step (22). The block (35) is placed by sealing in the closed mold 14) (324), and the sealing block (3 protruding into the channel (30) - end. b) * is placed in the embryo tube (4 above rapid modeling procedure (i 〇) In the middle and middle, the upper and lower molds of the mold prototype are generally used as steps (12) in the mold to produce the upper mold (3 i ) respectively; true... L, +, 〆, r犋 [3 2 ) Sand mold. In the above-mentioned mold prototyping step ("), the type is manually manufactured or mechanically produced, for example, in rapid prototyping.
Phototyping)機器製作出模具原型，·而模且原 =質可採用保麗龍或、蠕...等，其除了具有低炫點之 亦易於實行成型加工，倘若模具原型之成型過程 右生任何瑕现或誤差，可於短時間内再造一模具原型， 可避免造成產品開發時程之延宏；上述之炫融液可為炼融 孟屬液、樹脂…等，其於冷凝後所形成之成型模具（3 0 ) 具有足夠之抗變形強度，可供進行管件液麼成 0 ) 〇 上述快速造模程序（1 〇)之砂模製作步驟（1 2) 中亦可先以加熱手段使模具原型之上模與下模自砂箱中 炼出’使石> 相中形成對應該模具原型之上模與下模形狀之 原i模八’作為砂模；而該澆鑄步驟（1 3 )係將常溫下 200821079 呈現固態之物質之高溫熔融液澆 徭π & & 一1 /衩中，待熔融液凝固 成為—成型模具（3 〇 )之上模（3 χ )與下模（3 2)，並將砂模打碎取出成型模具（3㈧，，、 模（3 1)與下描；人z ^ μ π / M(3 2)之對合面間形成有相對應之模 八C 3 1 1 ) ( 3 2工）以及沖頭置入道（3 2 2 )與模穴（3 1 1 ) ( 3 2 1 )連通。 /上述快速造模程序（i 〇 )中之淹鑄步驟（工3 )之 ^可另增加—模具加工步驟（14)，係將成型模具（3 之上模（3 1 )與下模（3 2 )之對合面（3 χ 3 ) (323)及模穴（311) ( 〇 〇 Ί X ^ 1 )進行機械加工或 放電加工，使對合面（313)(323)能緊密貼合， 而模穴達到所需的尺寸精度。 快速造模程序（i 〇 )可快速地製造出一成型模且㈡ 〇。）’之後再使用該成型模具（3Q)進行管件液壓成型 転序（20) ’成型出所需之管件成品（4〇，，），曰 以管件成品（4 0，，）之制、生、μ扣π 疋 )之製造過程可謂相當快速，且成 本低廉，可適用於少量多樣化之產品製造。 上述管件液麼成型程序（20)中之液屢成型步驟（2 3) ’ 一般而言，係使魅答（/η、 之胚& ( 4 〇)内部之壓力增加至 1，OOOBar ( 1，000公斤/平古八八、#丄 △吓/干方公分），特殊狀況下則需達到 U_ar或更高，以產生^以使延展性較差或是厚度較厚 之胚管（4 0)變形之壓力。 為生產各種造型不同之管件成品（4〇,，），上 成型模具（30)之上模（川與下模（32)上或； 200821079 形成有成型槽道與模穴（311) (321)連通，請參 閱第四圖，該成型模具（3 〇，）之上模（3 i^尚 形成有一成型槽道（3 6 )與其模穴連通，是以，當進行 官件液壓成型程序（2〇)時，可於閉模步驟（22)中 將沖頭（3 4，）（ 3 8 )置入沖頭置入道（3丄2 ) ( 3 2 2 )中貼抵於胚管（4 〇 )兩端部，並將一抿壓沖頭㈡ 7)適距地置入成型槽道⑴）中，藉&，於液壓成形 步驟（23)中’胚管（40)即會受壓而往成型槽道（3 6匕凸伸，同時間令沖頭（34， ） （38)持續地貼抵 胚官：4 0 )兩端冑，並令抵壓沖頭（3 7 )持續地緊抵 於胚管（40)朝成型槽道（36)凸伸之端部，便可如 預期地使胚管（4 Q )產生對應於成型槽it ( 3 6 )形狀 之形變’而達到生產多樣化f件成品（4〇，’）之功效。 上述之模穴（3 1 1 )( 3 2 1 )可如第二圖所示， 一呈現起伏狀，具有特定造型之模穴（3 i丄）（3 2 ^ )， 或是如第四圖所示，僅為單純之管壁狀模穴。 本發明金屬管件製品之快速製造方法主要具有以下功 效： 〜一、管件成品（4 〇,，）外型多樣化，本發明之胚 二、（4 0 )係透過管件液壓成型程序（2 〇 ) &型，故可 製^出外型複雜且多樣化之管件成品（4 〇，，）。 二、縮短產品開發時程’本發明於管件液壓成型程序 2 0)中所使用之成型模具（3〇)，係透過快速造模 王序（1 〇 )所製造，故成型模4 ( 3 〇 )之製造不僅相 200821079 田快速，若成型過程中產生任何瑕砒或誤差，亦易於快速 重製一成型模具（30)，可縮短產品開發時程並避免不 必要之延宕；再者，由於管件液壓成型程彳（2 0)之成 型過程亦相當快速，故本發明於產品設計完成後即可於短 時間内生產。 一、成本低廉，於管件液壓成型程序（2 0 )中所使 用之成型模具（3 Q )係、透過快速造模程序（1 〇 )所製 造’其製造過程相當簡便，故其成本相當低廉，適合運用 於少量多樣化產品之製造領域。 四、適用於多種材質， 金屬材料，如銅、鉛、鋁·· 金屬，如鈦合金、鋁合金·· 益白···等。 本發明亦不限於僅能成型一般 等’其亦適用於一些難成形之 等’甚至貴重金屬如金、銀、 …面上之金屬中空精品皆是 主，本發明提供了一種產品開發歷程短，製造== =成品低廉之金屬管件製品之快速製造方法，係 少夏多樣化之金屬管件製品時較佳之選擇。 【圖式簡單說明】 品之快速製造方法之一 第一圖：為本發明金屬管件製 較佳實施例之流程圖。 一成型 &之立 不一固·馮桊發明於管件液成型程序中， 模具將-管狀母材成型為雛形管件之動作示意 第三圖··為一透過本發明之方法製造之“管 11 200821079 體圖。 '.、、v个冰π於管 丨τ肌/7乂芏彺斤甲，侍用 態之成型模具將-管狀母材成型為離形管件之型 圖。 〜S仵之動作示意 【主要元件符號說明】 (1〇)快速造模程序 （ (12)砂模製作步驟 （ (1 4 )模具加工步驟 (2 〇 )管件液壓成型程序 模具原型製作步驟 澆鑄步驟 1 )前置步驟 3 )液壓成型步驟 5 )截除步驟 〇 ’ ）成型模具 1 ’ ）上模 (3 1 2 )沖頭置入道 (3 1 4 )密封塊置入道（ (3 2 1 )模穴 （ (^23)對合面 （ (3 4 )沖頭 （ (3 4 1 )液體填充道 （ (3 6 )成型槽道 (4 〇 )胚管 (4 〇 ’ ，）管件成品 ( ( ( ( (22 (24 (3 〇 (31 (31 (3 1 224 )24 ) ) 閉模步驟 脫模步驟 成型模具 上模 )模穴 )對合面 下模 )冲頭置入道 )密封塊置入$ )沖頭 密封塊 抵壓沖頭 )雛形管件 12Phototyping) The machine makes the prototype of the mold, and the mold and the original = quality can be used for styrofoam, creep, etc., in addition to the low-hyun point, it is easy to carry out the molding process, if the molding process of the mold prototype is right, any瑕 或 或 误差 误差 再 再 再 或 或 或 或 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再 再(3 0 ) has sufficient resistance to deformation and can be used to make the pipe fluid 0) 〇 The above-mentioned rapid mold-making procedure (1 〇) sand molding process (1 2) can also be used to make the mold prototype by heating The upper mold and the lower mold are obtained from the sand box to form a 'sand stone> phase to form a mold corresponding to the shape of the upper mold and the lower mold of the mold prototype as a sand mold; and the casting step (13) At room temperature, 200821079, a high-temperature melt of solid matter is poured in π &&&&&< 1 / 衩, until the melt solidifies into a mold (3 〇) upper mold (3 χ) and lower mold (3 2) And the sand mold is broken and taken out of the forming mold (3 (eight),,, mold ( 3 1) and the following description; the corresponding plane of the z ^ μ π / M (3 2) is formed with a corresponding model C C 1 1 1 ) (3 2 work) and the punch is placed in the road (3 2 2 ) is connected to the cavity (3 1 1 ) ( 3 2 1 ). / The above-mentioned rapid molding process (i 〇) in the submerged casting step (work 3) can be additionally added - the mold processing step (14), is the forming mold (3 upper mold (3 1) and lower mold (3 2) Machining or electric discharge machining of the mating surface (3 χ 3 ) (323) and the cavity (311) ( 〇〇Ί X ^ 1 ), so that the mating surface (313) (323) can be closely fitted. The mold cavity achieves the required dimensional accuracy. The rapid mold making process (i 〇) can quickly produce a molding die and (2) 〇.) 'The mold is then hydraulically molded using the forming die (3Q) (20) 'The manufacturing process of the finished pipe fittings (4〇,,), the finished pipe fittings (40,,), the raw material, the μ buckle π 疋) can be described as quite fast and low cost, and can be applied to a small amount. Diversified product manufacturing. In the above-mentioned pipe fitting process (20), the liquid multiple forming step (2 3) 'Generally, the pressure inside the charm (/n, the embryo & (4 〇) is increased to 1,OOBar (1) , 000 kg / Ping Gu Ba Ba, # 丄 △ scare / dry square cents), under special conditions need to reach U_ar or higher to produce ^ to make the ductility or thicker thick tube (40) The pressure of deformation. For the production of various pipe fittings (4〇,,), the upper mold (30) upper mold (Chuan and the lower mold (32) or; 200821079 formed a molding channel and cavity (311 (321) Connected, please refer to the fourth figure, the upper mold of the forming mold (3 ^,) (3 i^ still forms a forming channel (3 6 ) to communicate with its cavity, so that when the hydraulic pressure of the official part is carried out In the molding process (2〇), the punch (3 4,) ( 3 8 ) can be placed in the punch placement channel (3丄2) (3 2 2 ) in the mold closing step (22). Both ends of the embryonic tube (4 〇), and a pressure punch (2) 7) is placed into the molding channel (1)) at a proper distance, by &, in the hydroforming step (23), the 'male tube (40) Will be under pressure Type channel (3 6匕 convex, while the punch (34, ) (38) continuously adheres to the embryo: 4 0) both ends of the 胄, and the pressure punch (3 7) continues to tighten At the end of the embryo tube (40) protruding toward the molding channel (36), the embryo tube (4Q) can be deformed as expected to correspond to the shape of the forming groove (36) to achieve production diversification. The effect of the finished product (4〇, '). The above-mentioned cavity (3 1 1 ) ( 3 2 1 ) can be as shown in the second figure, and it has an undulating shape with a specific shape of the cavity (3 i丄) ( 3 2 ^ ), or as shown in the fourth figure, is only a simple tube wall cavity. The rapid manufacturing method of the metal pipe product of the invention mainly has the following effects: ~1, the finished pipe fittings (4 〇,,) Diversified types, the embryo 2, (40) of the present invention is passed through a hydraulic forming program (2 〇) & type, so that a complicated and diverse tubular product (4 〇,,) can be produced. Shortening the product development schedule 'The molding die (3〇) used in the pipe fitting hydroforming program 20 of the present invention is manufactured by Rapid Modeling (1 〇) Therefore, the manufacturing of the molding die 4 (3 〇) is not only fast in the 200821079 field, but also can easily reproduce a molding die (30) if any defects or errors occur during the molding process, which can shorten the product development time and avoid unnecessary. Further, since the molding process of the pipe hydraulic forming process (20) is also quite fast, the invention can be produced in a short time after the product design is completed. First, the cost is low, and the molding die (3 Q) used in the hydraulic forming program (20) of the pipe fittings is manufactured by the rapid molding process (1 〇). The manufacturing process is quite simple, so the cost is relatively low. Suitable for use in the manufacturing of small quantities of diverse products. Fourth, suitable for a variety of materials, metal materials, such as copper, lead, aluminum · metal, such as titanium alloy, aluminum alloy · · white · · · and so on. The invention is also not limited to being able to be formed only in general, etc., which is also suitable for some difficult-to-form, etc. Even precious metal such as gold, silver, or the like, is a main product, and the present invention provides a short product development process. Manufacturing == = The rapid manufacturing method of the finished metal pipe fittings is the best choice for the diversified metal pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS [One of the quick manufacturing methods of the product] The first drawing is a flow chart of a preferred embodiment of the metal pipe fitting of the present invention. A molding & 立立不固············································································ 200821079 体图. '.,, v ice π in the tube 丨 τ muscle / 7 乂芏彺 甲 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , [Main component symbol description] (1〇) rapid modeling program ((12) sand mold making step ((1 4) mold processing step (2 〇) pipe fitting hydroforming program mold prototyping step casting step 1) pre-step 3) Hydroforming step 5) Cut-off step 〇 ') Molding die 1 ') Upper die (3 1 2) Punch inserting path (3 1 4) Sealing block placement channel ((3 2 1) cavity (( ^23) Matching face ((3 4) punch ((3 4 1) liquid filling channel ((3 6) forming channel (4 〇) embryo tube (4 〇',) pipe fittings finished (( ( (22 (24 (3 〇(31 (31 (3 1 224 )24 ) ) Closed-mold step demoulding step forming mold upper mold) cavity) facing surface lower mold) punch placement channel) sealing block placement $ ) Punch Sealing block Pressing punch) Young pipe fittings 12