201036864 六、發明說明： 【發明所屬之技術領域】 本叙明係提供一種符合高精度及高強度要求，且能降 低生產成本及提高加工效率之豎管上蓋製造方法。 【先前技術】 ^提高自行車豎管組裝的安全性，需在豎管及前叉立 吕頂舳鎖固一上蓋，此上蓋之構造便如我國M345〇29號專 〇利案第-圖所示般，其具有一可配合於前叉立fi中之套 柱6b、-可抵麼於該立管！及賢管4頂端之環抵肩， 並於上蓋6中央貫設有一魚眼孔6c、6f，用以提供一螺栓 7㈣後而與立管！中之星形螺帽δ鎖固，俾當旋緊螺检 7日守，使上蓋6之環抵肩6a能夠往下迫緊豎管4，令豎管 4牢固地限位於該上蓋6與與車頭碗叙3間，如此即可確 保騎乘的安全性。 ❹ 現配合圖―觀之’上蓋6傳統製造步驟依序經：準傾 ，紹棒―以車床將擠型轉切削成型出套柱肋及環抵 以車床鑽出魚眼孔&、6f—以車床將上蓋6裁斷 —成品。此種切屑製法有以下缺點： :須使用刀具加工，在大量生產時有效率不足情形。 降狀問^整體加工時間無法降低，所以有製造成本無法 二、在車削時有廢料產生，相當浪費材料。 四、無法強化其材料密度及強度。 3 201036864 是以，便有圖二之製法產生，其製造步驟為：準備擠 型鋁棒—裁切—加熱—夾持至模具—熱鍛成型—下料— 沖床去除溢料—熱處理—振動研磨—鑽魚眼孔（6c)(6f) —成品。此種熱鍛製法的製造效率遠較圖一更佳，但較第 一圖製法之製造成本而言，其下降是相當有限，原因如下： 一、其須備置一套加熱設備將材料先行加溫。 一、有溢料及殘料問題而須以二次加工去除。 三、由於成品精度低、表面質量差，造成須進行後續 振動研磨之困擾。 有4α於1官上盍製造仍有成本無法降低之缺點，本 發明者乃經獨構思、創研，乃研發&具#狀本發明。 【發明内容】 本發明主要内容在於：提供一種豎管上蓋製造方法， ❹其乃是將預定形狀及重量之擠型紹棒進行冷锻，使之於上 、、下面同軸的形成二未貫通之沉孔，⑽經由連續模反覆 冷锻成型該二沉孔，使該二沉孔貫通的形成一孔徑上大下 眼孔’繼之，才冷鍛成型出套柱、環抵肩，如此即 貝自動化的將賢管上蓋製造完成，而無須另外 二用=成降低生產成本及提高加工效率之原則騎賴 ^财上蓋^提出—有效解決之新穎技術。 為使貴審查委員能進一步瞭解本發明之結構，特徵 4 201036864 及其他目的，玆附以較佳實施例之圖式詳細說明如后： 請參閱圖三〜六，本發明豎管上蓋（A)製造步驟係包 括有： 1) 準備預定形狀及重量之播型銘棒（a); 2) 將連續模安裝於一螺帽成型機（Nut 或螺絲 -成型機（B〇lt F0rmer) ’俾於擠型鋁棒（9)頂面初步成型出 -凹入階級沉孔（11) ’另於擠型祕⑷底面同軸的凹入 Ο -孔徑較小之階級沉孔（12)，且控制該二階級沉孔⑼ (12)呈未貫通狀； 3) 經螺帽成型機（Nut F〇rmer)或螺絲成型機（B〇11 Fooier)作動連續模反覆冷鍛拉伸該二沉孔（ιι)(ΐ2)，方 使該二沉孔⑼⑽貫通的形成一孔徑上大下小之魚眼 孔⑽，用以形成豎管上蓋⑴之初胚體，在此同時，並 逐漸成型出該豎管上蓋⑷頂面⑵)、底面⑽所需圓弧 W形狀； 4) 最後’才以該連續模於好上蓋⑴成型出一能配 合於前又立管（40)内孔中之套柱（31)、—能抵廢登管⑽ 頂端之環抵肩(32)，進而完成出所需之豎管上蓋⑷；在 此特別說明，此套柱⑽、環抵肩（32)能早於魚眼孔⑽ 成型，或同時與魚眼孔⑽—併冷锻出來，其端視連續模 之細部設計而定。 由以上之製法說明得知本發明至少具有以下優點： 5 201036864 .擠型鋁棒（a)無須加熱即可進行加工。 2. 成品沒有溢料及殘料問題，無須以二次加工進行切 斷溢料或殘料。 3. 沒有車削產生廢料之浪費問題。 本發明成品經連續冷鍛後，整個材料密度及強度均 更為優良。 5.本發明成品之只須一次加工即可達到高精密度及 表面性佳之特點。 請參閱圖七及八，其係本發明第二實施例，其主要說 明本發明可於連續觀财所需之圖案或L⑽，使此連續 拉為螺巾目成型機（Nut Former)或螺絲成型機⑽t F〇rmer) 乍動後月b於1:管上盖（A)頂面（21)成型出精敏之突出圖 案⑽或漏’用以達到所需之標示效果，此附加價值傳 統製法實難以達成；相同的道理，此連續模可凸板的設置 有圖案或L0GG，使此連續模為螺帽成型機（驗Μ·) ❹轉成型機⑽t FQrmer)作動後，如圖九所示的於登 官上蓋（A)頂面（21)相應成型出凹入之圖案⑽）或漏。 上所述，本發明生產流程完全突破改革習用製法 Μ效率低'品質不良率劣化的問題’是一技術理念上的 尚度創作，應符專射請要件，惟以上所述者，僅為本發 明之-較佳實施例而已’大凡依本發明中請專利範圍所作 之均等變化與㈣’皆應仍屬本發明涵蓋之範圍内。 6 201036864 【圖式簡單說明】 圖一係第一種傳統豎管上蓋之製造流程示意圖。 圖二係第二種傳統豎管上蓋之製造流程示意圖。 圖三係本發明豎管上蓋之剖面製造流程示意圖。 圖四係本發明豎管上蓋之立體製造流程示意圖。 •圖五係本發明豎管上蓋之仰視製造流程示意圖。 圖六係本發明豎管上蓋之實施例示意圖。 〇圖七係本發明第二實施例示意圖。 圖八係本發明第二實施例所製造之豎管上蓋外觀示意圖。 圖九係本發明第三實施例所製造之豎管上蓋外觀示意圖。 【主要元件符號說明】 (A)豎管上蓋 (a)擠型鋁棒 (11)(12)沉孔 (13)魚眼孔 (21)頂面 (22)底面 (31)套柱 (3 2)環抵肩 (40)立管 (50)豎管 (60)圖案201036864 VI. Description of the invention: [Technical field to which the invention pertains] This description provides a method for manufacturing a riser cap that meets high precision and high strength requirements, and can reduce production cost and improve processing efficiency. [Prior Art] ^To improve the safety of the bicycle standpipe assembly, it is necessary to lock the upper cover on the vertical pipe and the front fork. The structure of the upper cover is as shown in the special picture of M345〇29 in China. In general, it has a sleeve 6b that can be fitted into the front fork, and can be offset by the riser! And the ring of the top of the sage 4 is erected to the shoulder, and a fisheye hole 6c, 6f is arranged in the center of the upper cover 6 to provide a bolt 7 (four) and the riser! The star nut is locked in the δ, and when the screw is checked for 7 days, the ring 6a of the upper cover 6 can be pressed down the vertical pipe 4, so that the stand 4 is firmly limited to the upper cover 6 and The front of the bowl is 3, so you can ensure the safety of riding. ❹ Now cooperate with the figure-view of the 'top cover 6' traditional manufacturing steps in order: quasi-dip, Shao rod - to the lathe will be extruded into a set of column ribs and ring to the hole in the car hole drill &, 6f - The upper cover 6 is cut by a lathe - the finished product. This method of chip making has the following disadvantages: It must be processed by a tool, and it is inefficient in mass production. The shape of the drop can not be reduced, so there is no manufacturing cost. Second, there is waste generated during turning, which is a waste of material. Fourth, the material density and strength cannot be strengthened. 3 201036864 Therefore, there is a method of the production of Figure 2, the manufacturing steps are: preparing extruded aluminum rods - cutting - heating - clamping to the mold - hot forging - blanking - punching to remove flash - heat treatment - vibration grinding - Drilling fish eye hole (6c) (6f) - finished product. The manufacturing efficiency of this hot forging method is much better than that of Figure 1, but the decline is quite limited compared to the manufacturing cost of the first drawing method. The reasons are as follows: 1. It must be equipped with a heating device to warm the material first. . First, there are problems with flash and residual materials and must be removed by secondary processing. Third, due to the low precision of the finished product and poor surface quality, it is necessary to carry out subsequent vibration grinding. There is a disadvantage that the cost of the 4α is not reduced, and the present inventors have independently developed and researched the invention, and have developed and developed the invention. SUMMARY OF THE INVENTION The main content of the present invention is to provide a method for manufacturing a vertical tube upper cover, which is to cold-forge a squeezed rod of a predetermined shape and weight so that the upper and lower sides are coaxially formed. The counterbore, (10) cold forging the cold hole forging through the continuous die, so that the two counterbore penetrates to form a hole with a large lower eyelet, followed by cold forging to form a sleeve, a ring against the shoulder, so that The automation of the production of the upper cover of the Yinxian tube, without the need for the other two = the principle of reducing production costs and improving processing efficiency, riding on the financial cover ^ proposed - effective solution to the novel technology. In order to enable the reviewing committee to further understand the structure of the present invention, feature 4 201036864 and other objects are detailed with the drawings of the preferred embodiment as follows: Please refer to Figures 3 to 6, the vertical tube cover (A) of the present invention The manufacturing steps include: 1) preparing a predetermined shape and weight of the ingot (a); 2) mounting the continuous mold on a nut forming machine (Nut or screw-forming machine (B〇lt F0rmer) The top surface of the extruded aluminum rod (9) is initially formed - the recessed counterbore (11) 'the other is the concave concave 底面 on the bottom surface of the extruded type (4) - the counterbore (12) with a smaller aperture, and the second is controlled Class counterbore (9) (12) is unpenetrated; 3) through the nut forming machine (Nut F〇rmer) or screw forming machine (B〇11 Fooier), the continuous die is overlaid and the cold counter forging the second counterbore (ιι) (ΐ2), the two countersinks (9) (10) are formed to form a fisheye hole (10) having a small diameter and a small diameter to form an initial embryo body of the vertical tube upper cover (1), and at the same time, the vertical tube upper cover is gradually formed. (4) top surface (2)), bottom surface (10) required arc shape W; 4) final 'only with the continuous mold in the upper cover (1) to form a match The sleeve (31) in the inner hole of the riser (40) and the ring abutting shoulder (32) of the top end of the pipe (10) can be used to complete the required vertical pipe cover (4); The set of posts (10) and the ring abutment (32) can be formed earlier than the fisheye hole (10) or simultaneously with the fisheye hole (10) and cold forged, depending on the detail of the continuous die design. From the above description of the process, it is known that the present invention has at least the following advantages: 5 201036864. The extruded aluminum rod (a) can be processed without heating. 2. The finished product has no problems with flash and residual materials, and it is not necessary to cut the flash or residual material by secondary processing. 3. There is no waste of turning waste generated by turning. After the continuous cold forging of the finished product of the invention, the density and strength of the whole material are more excellent. 5. The finished product of the invention can achieve high precision and good surface properties only in one process. Please refer to FIG. 7 and FIG. 8 , which are the second embodiment of the present invention, which mainly illustrates the pattern or L (10) required for continuous money viewing in the present invention, and the continuous drawing is a Nut Former or screw forming. Machine (10)t F〇rmer) After the turbulent month b is 1: the top cover (A) of the tube (A) forms a sensitive protruding pattern (10) or leak 'to achieve the desired marking effect, this added value traditional method It is difficult to achieve; the same principle, the continuous mold can be provided with a pattern or L0GG for the convex plate, so that the continuous mold is a nut forming machine (testing), the twist forming machine (10) t FQrmer), as shown in FIG. The top surface (21) of the upper cover (A) is formed with a concave pattern (10) or a leak. As described above, the production process of the present invention completely breaks through the reform of the conventional production method, and the low efficiency of the problem of deterioration of the quality defect rate is a prior art creation of a technical concept, which should be met by special requirements, but the above is only The invention is also to be construed as being limited by the scope of the present invention. 6 201036864 [Simple description of the diagram] Figure 1 is a schematic diagram of the manufacturing process of the first conventional vertical tube upper cover. Figure 2 is a schematic view showing the manufacturing process of the second conventional riser cap. Figure 3 is a schematic view showing the manufacturing process of the cross section of the vertical pipe cover of the present invention. Figure 4 is a schematic view showing the three-dimensional manufacturing process of the vertical tube upper cover of the present invention. • Figure 5 is a schematic view of the bottom view manufacturing process of the riser cap of the present invention. Figure 6 is a schematic view of an embodiment of the riser cap of the present invention. Figure 7 is a schematic view of a second embodiment of the present invention. Figure 8 is a schematic view showing the appearance of the upper tube of the vertical pipe manufactured by the second embodiment of the present invention. Figure 9 is a schematic view showing the appearance of a vertical tube upper cover manufactured by a third embodiment of the present invention. [Main component symbol description] (A) Vertical pipe top cover (a) extruded aluminum bar (11) (12) counterbore (13) fisheye hole (21) top surface (22) bottom surface (31) sleeve (3 2 Ring ring shoulder (40) riser (50) standpipe (60) pattern