1)75429 九、發明說明： 【發明所屬之技術領域】 伽ί發ΓΓ—種中空蚊元件成触，尤指能夠減少成 孓的加工步驟來縮短工時，以降低成本之製造方法。 【先前技術】 ^元件雖齡屬於—個小元件，但在二種物品相互之社 δ或疋定位卻是缺之不可’而在各種的固定元件中，中*的固° 定兀件一直被廣泛的使用，習知中空元件的成型方法，ς ，了斤示’首先截取-段適當長度的線材丄’接著利用ς壓， =線材1去除因剪斷造成之不良斷面，然後於線材工的下端衝 "又孔洞1 1 ’接著在另端酬形成—向二侧凸出的帽頭1 2 ，再以衝壓的方式在線材i財間段外周_成四條適當深度 且相對應的槽溝1 3，最後鑽設方式，使帽頭i 2^孔^ 11間形成二段不同孔徑的中孔i 4· i 5，同時令槽溝工3 破裂與中孔14· 15呈連通狀，之後再將孔洞工工的孔壁攻 設螺牙，即可完成中空固定元件之成型，此一加工方式固然能 夠達到成型之目的，但是，當鑽設不同孔徑的中孔i 4.工5 及々槽溝13破裂時，就會形成§亥處材料不當的浪費，同時整 體加工的速度也較慢，導致製造本的提高，而降低了產品的= 爭力，故如何減少加工的步驟、提高工作效率及提高成品功效 ，實為業者極待改良之課題。 【發明内容】 本發明乃在提供一種中空固定元件成型法，主要先截取一 段適當長度的線材後，對之沖壓使形成一T字型毛胚，再利用 沖具將毛胚推入具四凸點的模具，使毛胚環周形成四道溝槽， 1275429 並沖设出内孔，再以直徑大於内孔的沖具進行沖壓，而令 外徑擴大，同時溝槽並裂開，然後以沖具將毛胚推入直1小於 毛胚溝槽之模具，令擴大的賴⑽，同耗胚底部形成下料 孔，再以沖具沖擊毛胚的端頭，使形成扁平的頭部，同時内孔 形成不同孔徑的階段孔，最後將下料孔的餘料沖除，即 空的固定元件。 风土中 【實施方式】 為使貴審查委員能更易於了解本發明之加工步驟及所 能達到的功效，茲配合圖式說明如下： 請參閱圖二所示，首先截取適當長度的線材2，接著，藉 由衝設鍛造及擠伸加工，使形成具有較大端頭近似一 τ字形= 毛胚3，接著將毛胚3利用沖具推入模具内，該模具的内壁並 口又有四個相對應的凸點，使毛胚3較大端頭3 1下方的外周面 ，被模具的凸點沖設出四道相對應凹入的溝槽3 2，沖具並持 續沖入毛胚3内使形成内孔3 3，並令胚料向後擠伸讓溝槽3 2延長，然後利用直徑大於内孔3 3的沖具沖入毛胚3，使毛 胚3的外徑擴大，同時並讓溝槽3 2破裂，沖具持續沖入模具 底部，使毛胚3下端外徑擴大接近成品所須之直徑，接著利用 冲具將毛胚3沖入模具，該模具的直徑小於前段擴大後溝槽3 2處外徑，但略大於毛胚3下端之外徑，而使毛胚3的溝槽3 2處外徑收縮，沖具並持繽沖向模具底部，令毛胚3在溝槽3 2下方形成下料孔3 4，然後利用沖具沖擊毛胚3的端頭3工 ’使形成扁平狀的端頭3 1達到成品所須的尺寸，並沖擊内孔 3 3使形成二段不同孔徑的階段孔3 5·3 6，最後將下料孔 3 4的餘料3 7沖除’即完成加工步驟。 1275429 本成型方法的全部加工步驟，完全利用沖設加工的方式 ’而為一貫化的加工，可避免習知方法還須鑽設之步驟，讓加 工的過程減少，使加工變得更為流暢，有效的縮減加工的時間 ，同柃因係藉由沖設擠伸成型，可有效的減少材料的浪費，而 能降低製造絲，來提高紅峨爭力。 1275429 【圖式簡單說明】 圖一係習知成型法之示意圖。 圖二係本發明成型法之示意圖。 【主要元件符號說明】 1線材 1 1孔洞 1 2帽頭 2線材 1 3槽溝 1 5中孔 1 4中孔 3毛胚 3 1端頭 3 2溝槽 3 3内子匕 3 4下料孔 3 5階段孔 3 7餘料 3 6階段孔1) 75529 IX. Description of the invention: [Technical field to which the invention pertains] Gamma hairpin - a type of hollow mosquito component, especially a manufacturing method capable of reducing the processing steps of the crucible to shorten the man-hour and reduce the cost. [Prior Art] ^Although the component belongs to a small component, but the positioning of the two objects in each other δ or 疋 is indispensable, and in various fixed components, the solid-state 兀Widely used, the molding method of the conventional hollow element, ς, 斤 ' ' 'first intercept - the appropriate length of the wire 丄 ' then use the pressure, = wire 1 to remove the bad section caused by the shear, and then in the wire work The lower end of the punch " and the hole 1 1 'and then formed at the other end - the head of the cap 1 2 protruding from the two sides, and then the stamping of the outer section of the financial sector i into four appropriate depth and corresponding slot The groove 13 is finally drilled so that the middle hole i 4· i 5 of the two different diameters is formed between the caps i 2 and the holes 11 , and the groove 3 is broken and the middle hole 14· 15 is connected. After that, the hole wall of the hole worker can be tapped to complete the molding of the hollow fixing component. This processing method can achieve the purpose of molding, but when drilling the hole with different apertures, When the grooving groove 13 is broken, it will form a waste of improper material at the sea, and at the same time The slower speed of the work, this leads to an increased manufacturing, which reduces the ability of the product = contention, so how to reduce processing steps, improve efficiency and improve product effectiveness, in fact, improvement of the industry to be very subject. SUMMARY OF THE INVENTION The present invention provides a hollow fixing component molding method, which firstly takes a length of a wire of a suitable length, presses it to form a T-shaped blank, and then pushes the blank into a four-convex with a punch. The mold of the point is such that four rows of grooves are formed around the ring, 1275429 and the inner hole is punched out, and then punched with a punch having a diameter larger than the inner hole, and the outer diameter is enlarged, and the groove is split and then The punch pushes the blank into the mold of the straight 1 smaller than the blank groove, so that the enlarged Lai (10) forms a lowering hole at the bottom of the same consumption embryo, and then impacts the end of the blank with a punch to form a flat head. At the same time, the inner holes form phase holes of different apertures, and finally the residual material of the lower holes is flushed out, that is, the empty fixing elements. In the terroir [Embodiment] In order to make it easier for the reviewing committee to understand the processing steps and the efficiencies of the present invention, the following diagram is described as follows: Referring to Figure 2, the wire 2 of the appropriate length is first cut, and then By punching and forging, the formation of a larger end is approximated by a τ shape = the blank 3, and then the blank 3 is pushed into the mold by a punch, and the inner wall of the mold has four parallel ports. Corresponding bumps, so that the outer peripheral surface below the larger end 3 1 of the blank 3 is punched out by the convex points of the mold to form four corresponding concave grooves 3 2, punching and continuously rushing into the blank 3 The inner hole 3 3 is formed, and the billet is extruded backward to extend the groove 3 2 , and then the punch 3 is punched into the blank 3 by using a punch having a diameter larger than the inner hole 3 3 to enlarge the outer diameter of the blank 3 while The groove 3 2 is broken, the punch continues to rush into the bottom of the mold, so that the outer diameter of the lower end of the blank 3 is enlarged to be close to the diameter required for the finished product, and then the blank 3 is punched into the mold by the punch, and the diameter of the mold is smaller than that of the front portion. The outer diameter of the groove 3 2, but slightly larger than the outer diameter of the lower end of the blank 3, and the groove 3 of the blank 3 The outer diameter of the two places is contracted, and the punching tool is held toward the bottom of the mold, so that the blank 3 forms a lower hole 34 under the groove 3 2, and then the end of the blank 3 is punched by the punch to make the flat The end 31 1 of the shape reaches the size required for the finished product, and impacts the inner hole 3 3 to form two stage holes 3 5·3 6 of different pore diameters, and finally flushes the remaining material 3 7 of the lower hole 3 4 ' Complete the processing steps. 1275429 All the processing steps of this molding method are completely processed by the method of punching and processing, which can avoid the steps of the conventional method and the drilling process, so that the processing process is reduced and the processing becomes smoother. Effectively reducing the processing time, the same reason is because the extrusion molding, can effectively reduce the waste of materials, and can reduce the manufacturing of silk, to improve the competitiveness of the red dragonfly. 1275429 [Simple description of the diagram] Figure 1 is a schematic diagram of a conventional molding method. Figure 2 is a schematic illustration of the molding process of the present invention. [Main component symbol description] 1 wire 1 1 hole 1 2 cap 2 wire 1 3 groove 1 5 hole 1 4 hole 3 blank 3 1 end 3 2 groove 3 3 inner 匕 3 4 blank hole 3 5-stage hole 3 7 remaining material 3 6-stage hole