經濟部智慧財產局員工消費合作社印製 534846 五、發明説明（1 ) 【發明領域】 本發明是有關於-種螺釘之製造方法及立裝置，特別 是指-種薄型帶扳手導向孔六角承高頭螺钉之製造方法及 其裝置。 【習知技藝說明】 參閱第一圖，習知之螺釘成型機i是具有一機 口 U、裝5又在該機台11上之一第一母模12、〆第二母模 第一母模14、對應位在談等母模12~14之前方且 可相對朝該等母模12〜14往復衝壓的一第一公模15、一 第a模16及一第三公模17、三組對應位在該等母模 的後方並對應穿伸於母模i 2〜丨4中的頂托通出裝置 18’及二組同步往復移動於該等母模以之前方的夾具裝 置（圖未不）。製造時，將_線材19送人該螺釘成型機^ 中，經過整直、切料成一胚料191 ,再經該失具裝置依序 =送至該等母模12〜14中，並受相對應之公模i5〜i7進 订一系列的衝壓锻造，而後將此衝鍛後的半成品送至一鑽 床鑽製導孔之後，再進行其他後續的握牙、攻牙 程，以完成製造。 系表 參閱第二、三圖，就一尚未進行搓牙製程之薄型-板手導向孔六角承窩頭螺釘2的鍛造部品而 具有-圓柱形的桿身21，及一自該桿身21該螺：2 擴的端頭22。該端頭22具有一形成於一端面中：：向二 角孔221。該桿身21 m具有一連接該内六角孔如2，導 向孔2U。而該螺釘2在習知之製法上’將會依照所須鍛 _—_ ____第 3 頁 本纸張尺& t關家縣（CNS) *衣-------π------^ ί (請先閲讀背面之注意事項再填^.本頁) 534846Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives 534846 V. Description of the Invention (1) [Field of Invention] The present invention relates to a method for manufacturing a kind of screw and a standing device, particularly a kind of thin hexagonal bearing with a guide hole for a wrench Method and device for manufacturing head screw. [Description of Known Skills] Referring to the first figure, the conventional screw forming machine i is a first master mold 12 and a second master mold. 14. Corresponds to a first male die 15, a first a die 16 and a third male die 17, which are located in front of the mother die 12 ~ 14 and can be punched back and forth relative to the mother die 12 ~ 14. Three groups Corresponding to the master molds i2 ~ 丨 4 and two sets of jacking out devices 18 'correspondingly located behind the master molds and two sets of synchronous reciprocating movements in front of the master molds Do not). During manufacture, _wire 19 is sent to the screw forming machine ^, straightened and cut into a blank 191, and then sequentially sent to the master molds 12 ~ 14 through the lost device, and received Corresponding to the male molds i5 ~ i7, a series of punching and forging are ordered, and then the semi-finished product after punching and forging is sent to a drilling machine to drill guide holes, and then other subsequent gripping and tapping processes are completed to complete the manufacturing. Refer to Figures 2 and 3 for the table. For a forged part of a thin-wrench guide hole hexagon socket head screw 2 which has not been subjected to the rubbing process, it has a cylindrical shaft 21, and a screw from the shaft 21 : 2 widened end 22. The tip 22 has a hole 221 formed in an end face: toward the corner. The shaft 21 m has a hexagonal hole such as 2 and a guide hole 2U. And the screw 2 in the conventional manufacturing method 'will be forged in accordance with the required _ — _ ____ page 3 paper rule & t Guanjia County (CNS) * clothing ------- π --- --- ^ ί (Please read the notes on the back before filling ^. this page) 534846
(請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 造之螺釘2造型，令上述螺釘成型機工之該等母模12〜l4 及該等公模15~17,搭配界定出須對應成型之模穴的形狀 。在設計上，該第一母模12具有一面向第一公模15的第 .板口 12 1，該第一模口 12 1之一前.端緣呈開口朝前錐擴 狀而該第一公模15具有一對應該第一模口 121的第一 衝頭151，該第一衝頭151之一後端緣呈凹入的圓錐孔狀 ，在該第一模口 121與第一衝頭151之間界定出一第一模 )八，以衝鍛出一具有紡錘形端頭·之第一胚品23。該第二 母模13具有一面向第二公模16的第二模口 131，該第二 模口 131具有一擴大成一略呈錐狀圓柱孔的前段，該第二 公模16具有一對應該第二模口 131的第二衝頭ΐ6ι，該 第二衝頭161之一後端是呈由中央向後尖錐凸出的尖錐狀 ^在該第二模口 131與第二衝頭161之間界定出一第二模 八’以衝鍛出一具有圓柱形端頭且端頭之端面中央具有一 穴錐孔之第二胚品24。該第三母模14具有一面向第三公 模17的第三模口 141，該第三模口 141具有一直徑較大 於第二模口 131的前段之圓柱孔形的前段，該第三公模17 具有一對應朝該第三模口 141凸伸的第三衝頭m，該第 三衝頭m 1—端緣中央央錐之六邊形柱冑，在該第三模 y41與第三衝頭171之間界定出一第三模穴，以衝锻出 一具有内六角1 221之端頭造型的第三胚品25。而該直 桿狀之胚料191藉該等公模15〜17及母模仏14的對應 衝锻、，乃在該等衝頭與模口間所形成之模穴中，遞次衝壓 成型為具有紡錘形端頭之第一胚A 23、具有扁圓形端頭(Please read the precautions on the back before filling out this page) The shape of the screws 2 printed and manufactured by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs will make the female molds 12 ~ 14 and the male molds 15 ~ 17 of the above screw molding machines. The collocation defines the shape of the cavity to be formed. In design, the first female mold 12 has a first plate opening 12 1 facing the first male mold 15, and one of the first mold openings 12 1 has a front edge that expands toward the front and the first The male die 15 has a pair of first punches 151 corresponding to the first die opening 121. A rear edge of one of the first punches 151 has a concave conical hole shape. A first die) is defined between 151 to punch a first embryo 23 with a spindle-shaped end. The second female die 13 has a second die opening 131 facing the second male die 16. The second die opening 131 has a front section which is enlarged into a slightly tapered cylindrical hole. The second male die 16 has a pair of The second punch ΐ of the second die 131 is ιι, and one rear end of the second punch 161 has a tapered shape protruding from the center toward the rear. ^ Between the second die 131 and the second punch 161 A second die 8 ′ is defined in between to punch out a second embryo 24 having a cylindrical end and a hole taper hole in the center of the end surface of the end. The third female die 14 has a third die opening 141 facing the third male die 17. The third die opening 141 has a cylindrical hole-shaped front section having a diameter larger than that of the front section of the second die opening 131. The die 17 has a third punch m corresponding to the third die opening 141. The third punch m 1 is a hexagonal column 胄 of the central cone at the end edge. In the third die y41 and the third A third die cavity is defined between the punches 171 to punch and forge a third embryo 25 having an end shape of the inner hexagon 1 221. The straight rod-shaped blank 191 is punched and formed in the cavity formed between the punches and the die by the corresponding punching of the male molds 15-17 and the female mold 仏 14. First embryo A 23 with spindle-shaped end, with oblate end
534846 A? --- B7 五、發明説明（3 ) 一-^- (請先閱讀背面之注意事項再填寫本頁) 之第胚°〇 24，及具有内六角孔221之端頭造型的第三 胚品25。最後再對該第三胚品25作二次加工，即須在第 三胚品25面向内六角孔221之一端面中心，再以鑽床鑽 、製-與内六角孔221同心的導向孔211，才完成搓牙前基 本的螺釘2製造。 上述胚品之導向孔21丨在鑽孔加工時，加工人員須 將上述大量產製之該等鍛造部品，配合鑽床以半手工的方 式一一將之鑽製成具有導向孔211的螺釘2,在加工上相 當浪費人力及工時。此外，上述之螺釘2在鑽孔加工上， 易因該鑽床之鑽頭位於尾端的鑽唇切邊角度不正，或鑽頭 之鑽軸歪偏不直，或加工人員的操作不當等因素，而造成 導向孔211中心不易對準的缺失，參閱附件一 mN69i2-1985標準之第443頁中有關導向孔211之螺紋規格心， 得知表中所規範之公差非常小約0.06〜〇 〇9腿，因此製造 該導向孔211的精度須相對的高，然而若當該導向孔2ΐι 之中心偏歪，或是因鑽孔加工因素而使得導向孔2丨丨之孔 徑大小誤差較大時，該螺釘2即成為無法使用的瑕疵品， 因此習知之製法具有不良率高且成本高等的缺失。 經濟部智慧財產局員工消費合作社印製 參閱第四圖，再者，為了避免上述導向孔211在加 工上的問題，有的業者便思考出若是改變第三衝頭丨7 i的 形狀，在第三衝頭171之一後端再凸伸出一段尖柱桿172 ’成為一多層式階狀的衝頭，即能直接對應在第三胚品25 上衝鍛出該内六角孔221及導向孔211，除了可解決上述 缺失，更可減少製程。但是截面為六角形之第三衝頭i7i ______ 第 5 頁_ I纸張尺度適用中國國家標準（CNS )八4麟7 210^297公釐) '--------- 534846 五、發明説明（4 (請先閱讀背面之注意事項再填寫本頁) 與載面為圓形之尖柱桿172的面積差異過大，目而導致作 用應力會集中在兩者間的交接處，且在實際的鍛造上，因 該第_衝頭171及尖桎桿172是凸伸入該胚品中，在衝鍛 胚rm的同時亦被變形的胚品擠推，受到胚品的作用力擠壓 ，使第三衝頭171及尖柱桿172未留空隙地整個填塞深埋 而被夹置在胚品中’使該多層式衝頭之交接處於此次成形 中受到更大的壓應力，故當衝鍛完成而公模17前移時， )該第三衝頭171及尖柱桿172會受到拉扯而斷裂，根本無 法生產’因此在一次衝鍛製造上仍有困難之處。 經濟部智慧財產局員工消費合作社印製 另外’在上述之锻造製程中，該第三公模17與第三 母权14是相對抵貼，且該第三胚品乃是位在該第三衝頭 171與第三模口 141間之密閉的第三模穴中，以微觀來看 ，在衝鍛的同時，該第三胚品25會受到衝力作用而變形 ，且該材料的流動將受限於該第三模穴中，然而因該第三 公模17並非固定在第三母模14上，所以於衝鍛成型時， 該第二公模17亦會相對受到第三胚品25的反作用力，而 稍微前移離開該第三母模i4，令該第三胚品25具有朝前 變形的裕度，而未完全被限位在第三模穴中，因此該第三 胚品25於一端頭面向一桿身之端緣角隅25丨處，無法相 對填充於該第三模口 141之前段的後緣，亦即第三模穴中 形狀變化的邊角處，而使上述第三胚品25之端緣角隅25工 處形成一弧角，難以成形為平整表面及垂直夾角。此將影 響螺釘在日後的使用性，降低使用效果。 【發明概要】 頁 第 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公董） 經濟部智慧財產局員工消費合作社印製 534846 A7 ^^_—B7 ___ 五、發明説明（5 ) 因此，本發明之目的，即在提供一種薄型帶扳手導 向孔/、角承窩頭螺釘之製造方法及其裝置，能在同一鍛造 部品成型機中成型一具有薄型帶扳手導向孔之六角承窩頭 螺、τ此*達到製造精度向及降低成本的功效。 於疋’本發明薄型帶扳手導向孔六角承窩頭螺釘之 衣k方法疋依照下述步驟進行：（1)第一鍛造模組衝鍛： 將直桿狀之胚料置入一第一母模之一第一模口中，並受 一第一公模之一第一衝頭的對應衝鍛，以鍛造出一具有一 纺鐘形端頭之第一胚品。（2)第二鍛造模組衝鍛：將該第 一胚品置入一第二母模之一第二模口中，並受一第二公模 之一第二衝頭的對應衝鍛，以鍛造出一具有一端頭之第二 胚品’且該端頭具有一自一端面沿著一中心軸線延伸縮束 的麵孔。（3)第三鍛造模組衝鍛··將該第二胚品置入一第 二母模之一第三模口中，並受一第三公模之一第三衝頭的 對應衝锻’以鍛造出一具有一端頭之第三胚品，該端頭具 有一自一端面沿著該中心軸線延伸的開孔，該開孔具有沿 著該中心軸線依序排列之一靠近該端面的六角孔段、一逐 漸縮束的抬拔孔段’及一逐漸尖錐縮合的尖錐孔段。（4) 第四鍛造模組衝鍛：再將該第三胚品置入一第四母模之一 第四模口中，並受一第四公模之一第四衝頭的對應衝鍛， 以鍛造出一具有一端頭之第四胚品，該端頭具有一自一端 面沿著該中心軸線延伸的開孔，該開孔沿著該中心軸線依 序具有一六角孔段、一連接在該六角孔段後端的導引孔段 ，及一自錶導引孔段之一後端逐漸尖錐縮合的錐孔段。 _______第 7 頁 _ :紙張尺度適财賴家標準（CNS ) A4· ( 21GX297公釐）—一 "~~: I---------I------1T------^ (請先閱讀背面之注意事項再：本頁) 534846 五、發明説明（6 ) 再者，本發明-種薄型帶扳手導向孔六 釘之製造裝置，是包含-機台、依序裝設在該機台= 第-母模、-第二母模、—第三母模及一第四母模二 對應位在該等母模之前方且可受動力源驅動而 = 母模往復衝壓之一第一公模、一第二公模、一第三公= 一第四公模。該第-母模具有-形成於-前端面上的第— 模口，該第—模口具有-呈開擴狀的前端開口，而該第 ，公模具有-對應該第—模口的第—衝頭，該第_衝頭 一形成於一後端且呈向前凹入的錐孔。該第二母模具 面向第二公模的第二模口，該第二模口具有-擴大成—錐 狀圓柱孔的前段開口，該第二公模具有一對應該第：心 的第一衝頭’該第二衝頭具有一自一後端中央凸出的尖雜 。該第三母模具有-面向第三公模的第三模口，該第三模 口具有一直徑較大於該前段開口的圓柱開孔，該第三=模 具有-對應朝該第三模口凸伸的第三衝帛，該第三衝:具 有一向後凸伸的六邊形柱段、一形成於該柱段之一後端緣 中央且逐漸縮束的錐頸段’ 自該錐頸段之一端緣向後 逐漸縮束成尖錐狀的錐頭段。該第四母模具有一面向第四 公杈的第四模口，該第四模口具有一直徑微大於第三模口 之圓柱開孔的圓柱開孔，該第四公模具有一對應朝該第四 模口凸伸的第四衝頭，該第四衝頭沿著一中心轴線由前向 後依序具·有一向後凸伸的延伸段、一自該延伸段之—後端 延伸且逐漸朝中間部位弧彎成頸縮狀的頸伸段、一連接在 該頸伸段之一後端的圓柱段，及一自該圓柱段之一端緣向 裝-- (請先閲讀背面之注意事項再填寫本頁} -、11 經濟部智慧財產局員工消費合作社印製 k----------------- 經濟部智慧財產局員工消費合作社印製 534846 Α7 Β7 五、發明説明（7) 後逐漸縮束成尖錐狀的尖錐段。 【圖式之簡單說明】 本發明之其他特徵及優點，在以下配合參考圖式之 較佳實施例的詳細說明中，將可清楚的明白，在圖式中· 第一圖是一種習知螺釘成型機之簡略機構的俯視剖 視不意圖； 第二圖是第一圖中對應之三母模與三公模的放大剖 視圖； * 第三圖是一流程示意圖，說明一胚品經 、 自知釘成 31機鍛造後的變型流程，並在最後的流程中以_ 一 作又想線表 示的鑽頭示意在一第三胚品中鑽製一導向孔； 第四圖是第一圖之部份放大剖視圖，說明對鹿之 苐二母模與一第三公模，及兩者之間所衝锻 — 〜—第三胚品 的部份放大圖； 第五圖是本發明螺釘裝置之一較佳實施例的部份剖 視圖，說明對應之四母模與四公模相對關係； 第/、圖疋該較佳實施例的部份剖視圖，說明對鹿之 一第三母模與一第三公模，及兩者之間所衝鍛之一第三胚 品的部份放大圖； 第七圖是該較佳實施例的部份剖視圖，說明對應之 一第四母模與一第四公模，及兩者之間所衝鍛之一第四胚 品的部份放大圖；及 第八圖是一流程示意圖，說明一胚品經本實施例之 該專公模及母模分別锻造後的變型流程。 _____ 第9頁 本紙張尺ϋ用中國國家標準（CNS ) A4規格（210X297公釐） 裝 訂 線 (請先閱讀背面之注意事項再填寫本頁} 534846 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（8 ) 附件一 ：DIN69 12-1985標準之相關頁影本。 【較佳實施例之詳細說明】 々參閱第五、六、七圖，本發明之一種螺釘製造裝置 的第一較佳實施例是包含一機台3、依序裝設在該機台3 上之第一母模41、一第一母模42、一第三母模43及一 第四母模44，以及對應位在該等母模41〜44之前方且可 受動力源驅動而相對朝該等母模41〜44往復衝壓之一第 一公模51、一第二公模52、一第三公模53及一第四公模 54。至於該螺釘製造裝置之其他裝置與作動則與習知相同 ’恕不再冗述。上述該等公模5 1 ~54須分別搭配所對應 之母模41〜44，以依序界定出預定形狀的模穴，而鍛造成 型出所須造型的螺釘，因此在以下說明中，是各別將母模 及所對應之公模成組對應地先後順序說明，亦即將相對之 母模及公模視為一組鍛造模組。當然，該等母模及公模分 別疋由複數個不同的模塊所組成，在本實施例中僅針對界 疋出成型該胚品之模穴來說明，亦即說明每一母模具有一 對應公模的模口，及每一公模具有一相對嵌合該模口的衝 頭。 就第一鍛造模組而言’該第一母模41具有一形成於 一前端面上的第一模口 411，該第一模口 411具有一位於 後方之長直形的後段圓孔412，及一位於前方連接該後段 圓孔41 2且呈開擴狀的前端開口 4丨3。而該第一公模5 j 具有一形成於一後端面上並對應該第一模口 411的第一衝 頭511，該第一衝頭511具有一形成於一後端且逐漸向前 ：_ 第10頁 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 裝 訂 線 (請先閲讀背面之注意事項再填寫本頁) 534846 Α7 Β7 五、發明説明（9) 縮束的錐孔512。以在相對之第一模口 41 1與第一衝頭511 間界定出一第一模穴。 就第二鍛造模组而言，該第二母模42具有一面向第 二公模52的第二模口 421，該第二模口 421具有一位於 後方之長直形的後段圓孔422，及一位於前方且連接該後 段圓孔422的前段開口 423，該前段開口 423是擴大成一 錐狀圓柱孔。該第二公模52具有一對應該第二模口 421 的第二衝頭521，該第二衝頭52ί具有一自一後端中央凸 出的尖錐522。在該第二模口 421與第二衝頭521之間界 定出一第二模穴。 就第三锻造模組而言，該第三母模4 3具有一面向第 三公模53的第三模口 431，該第三模口 431具有一位於 後方之長直形的後段圓孔432，及一位於前方且連通該後 段圓孔432的前段圓柱開孔433。該圓柱開孔433之直徑 較大於該第二母模42的前段開口 423。該第三公模53具 有一伸入塞置在該第三模口 431之圓柱開孔433的一前端 上的後抵端531，及一對應朝該第三模口 431凸伸進入的 第三衝頭5 32，該第三衝頭532具有一向後凸伸的六邊形 柱段5 3 3、一形成於該柱段5 3 3之一後端緣中央且逐漸縮 束的錐頸段534，及一自該錐頸段534之一端緣向後逐漸 縮束成尖錐狀的錐頭段535。在該第三模口 431與第三衝 頭532之間界定出一第三模穴。 就第四鍛造模組而言，該第四母模44具有一面向第 四公模54的第四模口 441，該第四模口 441具有一位於 第11頁 本纸張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） (請先閱讀背面之注意事項再填寫本頁) 、νά 經濟部智慧財產局員工消費合作社印製 534846 A7 B7 五、發明説明（10 ) (請先閱讀背面之注意事項再填寫本頁) 後方之長直形的後段圓孔442 ’及一位於前方且連通該後 段圓孔442的前段圓柱開孔443。該圓柱開孔443之直徑 微大於第三模口 431之圓柱開孔433。該第四公模54具 .有一對應朝該第四模口 441凸伸的第四衝頭541,該第四 衝頭54 1沿著一中心軸線由前向後依序具有一向後凸伸的 長條延伸段542、一自該延伸段542之一後端延伸且逐漸 朝中間部位弧彎成頸縮狀的頸伸段543、一連接在該頸伸 令）段543之一後端的圓柱段544，犮一自該圓柱段544之一 端緣向後逐漸縮束成尖錐狀的尖錐段545。該頸伸段543 之後端及圓柱段544之截面直徑，微小於該第三衝頭532 之錐頸段5 3 4與錐頭段5 3 5間連接處的直徑，該頸伸段5 4 3 之中間部位的截面直徑小於該圓柱段544的截面直徑。在 該第四模口 441與第四衝頭541之間界定出一第四模穴。 配合參閱第五、八圖，本發明之製造方法的第一較 佳實施例是依照下述步驟進行： (1) 第一鍛造‘模組衝鍛：將一直桿狀之胚料6置入該 ‘第一模口 411中，並受該第一衝頭511的對應衝鍛，以在 第一模穴中鍛造出一具有紡錘形端頭611之第一胚品61 〇 經濟部智慧財產局員工消費合作社印製 (2) 第二鍛造模組衝鍛：將該第一胚品61置入該第二 模口 421中，並受該第二衝頭521的對應衝鍛，以在第二 模穴中鍛造出一具有圓柱形端頭621之第二胚品62，且 該端頭62 1具有一自一端面沿著一中心軸線延伸縮束的錐 孔 622 〇 __ 第12頁_ 本紙張尺度適用中國國家樣準（CNS ) A4規格（210X297公釐） ---— _ 534846 A7 B7 五、發明説明（11 ) (請先閲讀背面之注意事項再瑣寫本頁) (3) 第三鍛造模組衝锻：將第二胚品62置入該第三模 口 431中，並受該第三衝頭532的對應衝鍛，以在第三模 穴中鍛造出一具有圓柱形端頭63 1之第三胚品63，該端 .頭63 1具有一自一端面沿著該中心軸線延伸的開孔632 , 該開孔632具有沿著該中心軸線依序排列之一靠近該端面 且截面呈六角形的六角孔段633、一截面呈圓形且逐漸縮 束的拓拔孔段634，及一錐度較大於拓拔孔段634且逐漸 尖錐縮合的尖錐孔段635。 ， (4) 第四鍛造模組衝鍛：再將該第三胚品63置入該第 四模口 441中，並受該第四衝頭541的對應衝鍛，以在第 四模穴中鍛造出一第四胚品64。該第四胚品64具有一自 第二胚品63之開孔632延伸形成的開孔641，該開孔641 沿著該中心軸線依序具有一與第三胚品63之六角孔段633 相同之六角形孔的六角孔段642、一連接在該六角孔段642 後端且截面呈圓形的導引孔段643,及一自該導引孔段643 之一後端逐漸尖錐縮合的錐孔段644。 經濟部智慧財產局員工消費合作社印製 參閱第六、七圖，在上述之第三鍛造模組衝鍛製程中 ’該第二衝頭532之後抵端531是伸入塞堵在該第三模口 431之前端上，而使成形第三胚品63之第三模穴成為一 密閉空間，故於衝鍛的同時，該第三胚品63將完全填充 在該第二模穴中，而不具離開第三模穴的裕度，使該第三 胚品63於一端頭面向一桿身之端緣角隅636能成形為平 整的表面及垂直夾角，具有充實完整的外型。該第三胚品 63之拓拔孔段634及炎錐孔段635，是用來導引該第四^ 第13頁 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 534846 A7 ¥ 經濟部智慧財產局員工消費合作社印製 五、發明説明（12 ) 頭541衝鍛’且該第四衝頭541 貝伸ί又543的頸縮設計 ’、、第四胚品64之間形成間隙，減少與第四胚品“接 觸的面積，能方便衝锻前後該第四衝頭541的進出，延長 .第四衝頭541的使用壽命。再者，該第三衝頭532之錐頸 .段W與錐頭段535料接處的直徑，微大於該第四衝頭 ⑷544 ’而使所形成之拓拔孔段咖 的直fe大於圓柱段544的直#，以界定出可容置第四胚口口 如於第四衝頭541衝鍛時胚品材料變形而流動充填的間 隙’因此在衝鍛時，當該第四衝頭541衝鍛伸入第四胚品 64，而使該第四胚品64位於第四衝頭541之圓柱段5“ 及尖錐段545周圍的部份，會被相對擠壓而變形貼#在該 第四衝頭541外圍，惟因先前預留有間隙公差，因此第四 衝頭541不致被埋陷夾擠在第四胚品“中，而能順利地 退出第四胚品64外，不會產生拉扯斷裂的情形。 因此’本發明較習知為佳之優點在於： 、製造便利：利用本發明之螺釘製造方法及裝置，便可 在同一部鍛造部品成型機中，以四組模具依序衝壓冷 鍛，即可一貫化地完成在搓牙前所需的作業流程及所 要的形狀，而不必有另外的車製加工作業，實為一種 便利的製造裝置。且因在同一部鍛造部品成機中即可 完成所需的作業，故整體的作業時間可大為縮短，對 於競爭日漸嚴重的螺釘業，實為一項節省工時的設計 、節省成本：承上所述，本發明可在一螺釘成型機中直 _ 第14頁 本紙張从適用中國國家縣（CNS)八4胁（21GX297公董）534846 A? --- B7 V. Description of the invention (3) a-^-(please read the precautions on the back before filling this page) the first embryo ° 〇24, and the first shape with the hexagonal hole 221 end shape Three embryos 25. Finally, the third embryo product 25 is subjected to secondary processing, that is, the center of one end surface of the third embryo product 25 facing the hexagon socket 221 must be drilled and drilled with a drilling machine to make a guide hole 211 concentric with the hexagon socket 221 Only then completed the manufacture of the basic screw 2 before rubbing the teeth. The guide holes 21 of the above-mentioned blanks. During the drilling process, the processing personnel must drill the forged parts produced in large quantities above with a drilling machine in a semi-manual manner to drill them into screws 2 with guide holes 211. It is a waste of manpower and man-hours in processing. In addition, the above-mentioned screw 2 is easy to be guided due to factors such as the incorrect cutting edge angle of the drill lip at the tail end of the drill, the skew of the drill shaft, or the improper operation of the processing personnel. The lack of easy alignment of the center of the hole 211, please refer to the thread specifications of the guide hole 211 in page 443 of the mN69i2-1985 standard in Annex 1. It is known that the tolerance specified in the table is very small, about 0.06 ~ 〇09 legs. The accuracy of the guide hole 211 must be relatively high. However, if the center of the guide hole 2ΐι is skewed, or the diameter of the guide hole 2 is too large due to the drilling process, the screw 2 becomes Defective products that cannot be used, therefore, the conventional manufacturing method has a high defect rate and high cost. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, refer to the fourth figure. Furthermore, in order to avoid the processing problems of the above-mentioned guide hole 211, some industry players think about changing the shape of the third punch. One rear end of one of the three punches 171 protrudes and protrudes a segment of a rod 172 ′ to become a multi-layer step punch, which can directly punch the forged hexagonal hole 221 and guide on the third blank 25. In addition to solving the above-mentioned defects, the holes 211 can also reduce the manufacturing process. However, the third punch i7i with a hexagonal cross section ______ page 5 _ I paper size applies Chinese National Standard (CNS) 8 4 Lin 7 210 ^ 297 mm) '--------- 534846 V. Description of the Invention (4 (Please read the precautions on the back before filling out this page) The area of the cylindrical rod 172 with a round surface is too large, so the applied stress will be concentrated at the junction between the two, and In actual forging, because the _ punch 171 and the pointed bar 172 are protruding into the embryo, it is pushed and pushed by the deformed embryo at the same time as the forging of the embryo rm, and is squeezed by the force of the embryo So that the third punch 171 and the pointed rod 172 are completely buried without filling the gap and are sandwiched in the embryo, so that the transfer of the multilayer punch is subject to greater compressive stress during the forming process, so When the punching and forging are completed and the male die 17 is moved forward, the third punch 171 and the pointed rod 172 will be pulled and broken, and it will not be able to produce at all. Therefore, there is still difficulty in the manufacture of a single punching and forging. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In addition, in the above-mentioned forging process, the third male model 17 and the third mother right 14 are relatively offset, and the third embryo is located in the third punch. In the closed third cavity between the head 171 and the third die opening 141, from a micro perspective, during the forging, the third blank 25 will be deformed by the impact and the flow of the material will be restricted In the third cavity, however, since the third male mold 17 is not fixed on the third female mold 14, the second male mold 17 will also be relatively reacted by the third blank 25 during punching and forging. Force, and move forward slightly away from the third female mold i4, so that the third embryo 25 has a margin for deformation forward, but is not completely confined in the third cavity, so the third embryo 25 One end faces the angle 面向 25 of the edge of a shaft, and cannot be filled relatively to the trailing edge of the front section of the third die opening 141, that is, the corner of the third mold cavity whose shape changes, so that the third The end edge corner 25 of the embryo 25 forms an arc angle, which is difficult to form into a flat surface and a vertical angle. This will affect the usability of the screw in the future and reduce the use effect. [Summary of the invention] The page size of this paper applies the Chinese National Standard (CNS) A4 specifications (210X297 public directors) Printed by the Intellectual Property Bureau Employee Consumer Cooperatives of the Ministry of Economic Affairs 534846 A7 ^^ _— B7 ___ V. Invention Description (5) Therefore The object of the present invention is to provide a method and a device for manufacturing a thin socket guide screw with a wrench and / or an angle socket head screw, which can form a hexagon socket socket screw with a thin wrench guide hole in the same forged part forming machine, τthis * achieves manufacturing accuracy and reduces cost. Yu 'method of the thin hexagonal socket head screw with a wrench guide hole of the present invention is performed in accordance with the following steps: (1) first forging module punching: placing a straight rod-shaped blank into a first female mold One of the first die openings is correspondingly forged by a first punch of a first male die to forge a first embryo with a spinning bell-shaped end. (2) The second forging module punching: The first blank is placed in a second die of a second female mold, and is subject to corresponding punching by a second punch of a second male mold. A second embryo with a tip is forged, and the tip has a face that extends from one end surface and shrinks along a central axis. (3) The third forging module punching ... The second blank is placed in a third die of a second female mold, and is correspondingly forged by a third punch of a third male mold. A third embryo with a tip is forged, the tip has an opening extending from an end surface along the central axis, and the opening has a hexagon near the end surface arranged in sequence along the central axis. A hole section, a gradually shrinking lifting hole section ', and a gradually tapered conical section. (4) Forging of the fourth forging module: the third blank is placed into a fourth die of a fourth female mold, and is subjected to corresponding forging by a fourth punch of a fourth male mold, Forging a fourth embryo with one end, the end has an opening extending from an end surface along the central axis, and the opening sequentially has a hexagonal hole segment and a connection along the central axis. A guide hole section at the rear end of the hexagonal hole section, and a tapered hole section that gradually tapers and condenses from the rear end of one of the surface guide hole sections. _______Page 7_: Paper Standards (CNS) A4 · (21GX297 mm) —One " ~~: I --------- I ------ 1T- ----- ^ (Please read the precautions on the back again: this page) 534846 V. Description of the invention (6) Furthermore, the present invention-a thin type of manufacturing device with six guide holes for wrench guide holes, contains-machine 、 Sequentially installed on the machine = the first master model, the second master model, the third master model, and the fourth master model. The two counterparts are located before the master models and can be driven by the power source. The mother die punches one first male die, one second male die, and one third male die = one fourth male die. The first master mold has a first die opening formed on a front end surface, the first die opening has an open front end opening, and the second male die has a first opening corresponding to the first die opening. -A punch, the first punch is formed at a rear end and has a tapered hole recessed forward. The second female die faces a second die opening of a second male die, the second die opening has an opening at the front section of an enlarged-conical cylindrical hole, and the second male die has a pair of first punches corresponding to the first: the core. 'The second punch has a pointed tip protruding from the center of a rear end. The third mother die has a third die opening facing the third male die, the third die opening has a cylindrical opening having a diameter larger than the opening of the front section, and the third = die has a corresponding opening toward the third die opening. A convex third punch, the third punch: a hexagonal column segment protruding backward, a tapered neck segment formed at the center of a rear edge of one of the column segments and gradually shrinking from the cone neck One end edge of the segment gradually shrinks backward into a tapered cone-shaped segment. The fourth female die has a fourth die facing the fourth male die. The fourth die has a cylindrical opening with a diameter slightly larger than the cylindrical opening of the third die. The fourth male die has a correspondingly facing the first die. A fourth punch with a four-die projection protruding from the front to the back along a central axis, with an extension extending backward, and extending from the rear end of the extension toward the rear The middle part is curved into a necked neck extension, a cylindrical section connected to the rear end of one of the neck extensions, and one is installed from one end edge of the cylindrical section-(Please read the precautions on the back before filling This page}-, 11 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy k ----------------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economy 534846 Α7 Β7 V. Inventions After the description (7), the beam gradually shrinks into a tapered cone. [Simplified description of the drawings] Other features and advantages of the present invention will be described in the following detailed description of the preferred embodiments with reference to the drawings. Clearly understand that in the drawing, the first figure is a top sectional view of a simple mechanism of a conventional screw forming machine It is not intended; The second picture is an enlarged cross-sectional view of the corresponding three female molds and three male molds in the first picture; * The third picture is a schematic diagram of the process, which illustrates the deformation process of a 31-machine forging of a embryo and a self-knowledge nail. And in the final process, the drill bit indicated by _ is a imaginary line to drill a pilot hole in a third embryo; the fourth figure is an enlarged cross-sectional view of a part of the first figure, illustrating the second mother of the deer Die and a third male die, and a partially enlarged view of the third blank product punched between them; the fifth figure is a partial cross-sectional view of a preferred embodiment of the screw device of the present invention, illustrating the corresponding The relative relationship between the four female molds and the four male molds; Fig. 、, Figure 疋 A partial cross-sectional view of the preferred embodiment, illustrating a third female mold and a third male mold of the deer, and the forging between them A partially enlarged view of a third embryo; the seventh diagram is a partial cross-sectional view of the preferred embodiment, illustrating a corresponding one of a fourth female mold and a fourth male mold, and the punching and forging between them. An enlarged view of a part of a fourth embryo; and FIG. For example, the modification process of the special male and female molds after forging. _____ Page 9 This paper size is in accordance with Chinese National Standard (CNS) A4 specifications (210X297 mm) gutter (please read the precautions on the back before filling This page} 534846 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (8) Attachment 1: Photocopy of the relevant pages of the DIN69 12-1985 standard. [Detailed description of the preferred embodiment] 々 Refer to the fifth, Figures 6 and 7 show that the first preferred embodiment of a screw manufacturing device of the present invention includes a machine 3, a first female die 41, a first female die 42, A third female mold 43 and a fourth female mold 44, and a first male corresponding to the female molds 41 to 44 and capable of being driven by the power source to reciprocate toward the female molds 41 to 44. The mold 51, a second male mold 52, a third male mold 53 and a fourth male mold 54. The other devices and operations of the screw manufacturing device are the same as the conventional ones. The above-mentioned male molds 5 1 to 54 must be respectively matched with corresponding female molds 41 to 44 to sequentially define mold cavities of a predetermined shape, and forge the screws of a desired shape. Therefore, in the following description, they are respectively The mother mold and the corresponding male mold will be sequentially explained in groups, and the opposite mother mold and the male mold will be regarded as a set of forging modules. Of course, these master molds and male molds are respectively composed of a plurality of different modules. In this embodiment, only the cavity for forming the embryo is described, that is, each master mold has a corresponding male mold. The die mouth and each male die have a punch that fits into the die mouth. As far as the first forging module is concerned, 'the first female die 41 has a first die opening 411 formed on a front end surface, and the first die opening 411 has a long straight rear section circular hole 412 located at the rear, And an open front opening 4 丨 3 connected to the rear section circular hole 41 2 in the front and open. The first male die 5 j has a first punch 511 formed on a rear end surface and corresponding to the first die opening 411. The first punch 511 has a rear end formed gradually and forward: _ Page 10 This paper size applies Chinese National Standard (CNS) A4 (210X297mm) gutter (please read the precautions on the back before filling this page) 534846 Α7 Β7 5. Description of the invention (9) Conical cone Hole 512. A first die cavity is defined between the opposite first die opening 41 1 and the first punch 511. As far as the second forging module is concerned, the second female die 42 has a second die opening 421 facing the second male die 52, and the second die opening 421 has a long straight rear section circular hole 422 at the rear. And a front section opening 423 located in front and connected to the rear section circular hole 422, the front section opening 423 is enlarged into a tapered cylindrical hole. The second male die 52 has a pair of second punches 521 corresponding to the second die opening 421, and the second punch 521 has a pointed cone 522 protruding from the center of a rear end. A second die cavity is defined between the second die opening 421 and the second punch 521. As for the third forging module, the third female die 43 has a third die opening 431 facing the third male die 53, and the third die opening 431 has a long straight rear section circular hole 432 at the rear. And a front cylindrical opening 433 located in front and communicating with the rear circular hole 432. The diameter of the cylindrical opening 433 is larger than the front opening 423 of the second female mold 42. The third male die 53 has a rear abutting end 531 which is inserted into a front end of a cylindrical opening 433 of the third die opening 431, and a third corresponding protrusion protruding into the third die opening 431. A punch 5 32, the third punch 532 has a hexagonal column segment 5 3 protruding rearwardly, and a tapered neck segment 534 formed at the center of the rear edge of one of the column segments 5 3 3 and gradually shrinking. And a tapered head section 535 that gradually shrinks backward from one end edge of the tapered neck section 534 to a tapered shape. A third die cavity is defined between the third die opening 431 and the third punch 532. As far as the fourth forging module is concerned, the fourth female die 44 has a fourth die opening 441 facing the fourth male die 54, and the fourth die opening 441 has a position on page 11 which is applicable to Chinese national standards. (CNS) Α4 specification (210 × 297 mm) (Please read the precautions on the back before filling this page), νά Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 534846 A7 B7 V. Description of the invention (10) (Please read the back first Please note this page to fill in this page again) a long straight rear section circular hole 442 ′ in the rear and a front section cylindrical opening 443 located in front and communicating with the rear section circular hole 442. The diameter of the cylindrical opening 443 is slightly larger than the cylindrical opening 433 of the third die 431. The fourth male die 54 has a fourth punch 541 protruding toward the fourth die opening 441, and the fourth punch 541 has a length protruding backward from the front to the rear along a central axis in order. An extension section 542, a neck extension section 543 extending from a rear end of the extension section 542 and gradually curved into a neck shape toward the middle, and a cylindrical section 544 connected to one rear end of the neck extension section 543 From the end edge of one of the cylindrical segments 544, a cone-shaped cone-shaped segment 545 gradually shrinks backwards. The cross-sectional diameter of the rear end of the neck extension 543 and the cylindrical section 544 is smaller than the diameter of the junction between the cone neck section 5 3 4 and the cone head section 5 3 5 of the third punch 532. The neck extension 5 4 3 The cross-sectional diameter of the middle portion is smaller than the cross-sectional diameter of the cylindrical segment 544. A fourth die cavity is defined between the fourth die opening 441 and the fourth punch 541. With reference to the fifth and eighth drawings, the first preferred embodiment of the manufacturing method of the present invention is performed according to the following steps: (1) First forging 'module punching: Place the rod-shaped blank 6 into the 'In the first die opening 411, and the corresponding punching of the first punch 511 is performed to forge a first embryo 61 with a spindle-shaped end 611 in the first die cavity. Printed by the cooperative (2) The second forging module punching: The first blank 61 is placed in the second die opening 421, and is correspondingly forged by the second punch 521 to be in the second die cavity. A second embryo 62 having a cylindrical end 621 is forged in the middle, and the end 621 has a tapered hole 622 extending from one end surface along a central axis and shrinking. 〇__ page 12_ paper size Applicable to China National Standard (CNS) A4 specification (210X297 mm) ----- _ 534846 A7 B7 V. Description of invention (11) (Please read the precautions on the back before writing this page) (3) The third forging Module punching: The second blank 62 is placed in the third die opening 431 and subjected to the corresponding punching by the third punch 532 to be in the third die cavity. A third embryo 63 having a cylindrical end 63 1 is forged in the middle. The end 63 1 has an opening 632 extending from an end surface along the central axis, and the opening 632 has an opening along the central axis. A hexagonal hole section 633 close to the end face with a hexagonal cross section, a topological hole section 634 with a circular cross section and a gradual shrinking bundle are arranged in order, and a taper that is larger than the topological hole section 634 is gradually tapered. Tapered hole section 635. (4) The fourth forging module forging: the third blank 63 is placed in the fourth die opening 441, and is subjected to the corresponding forging by the fourth punch 541 to be in the fourth die cavity. A fourth embryo 64 is forged. The fourth embryo 64 has an opening 641 formed by extending from the opening 632 of the second embryo 63, and the opening 641 has a hexagonal hole segment 633 that is the same as the third embryo 63 in sequence along the central axis. A hexagonal hole segment 642 of a hexagonal hole, a guide hole segment 643 connected to the rear end of the hexagonal hole segment 642 and having a circular cross section, and a gradually tapered conical condensation from one rear end of the guide hole segment 643 Taper hole segment 644. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, refer to Figures 6 and 7. In the third forging module punching process described above, the second punch 532 and the abutment 531 are stuck in the third mold. The front end of the mouth 431 makes the third cavity of the third embryo 63 become a closed space. Therefore, during the forging, the third embryo 63 will be completely filled in the second cavity, without The margin leaving the third cavity allows the third edge 63 of the third embryo to face a shaft at one end, which can be formed into a flat surface and a vertical angle, and has a full and complete appearance. The third embossed product 63 has the extension hole section 634 and inflammation cone hole section 635, which are used to guide the fourth ^ page 13 This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) 534846 A7 ¥ Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (12) The head 541 is punched and forged, and the fourth punch is 541, and the neck design of 543 is stretched. The fourth embryo is formed between 64. The gap reduces the "contact area with the fourth blank", which can facilitate the entry and exit of the fourth punch 541 before and after punching and prolong the service life of the fourth punch 541. Furthermore, the cone neck of the third punch 532 The diameter of the junction between the segment W and the cone head segment 535 is slightly larger than the fourth punch ⑷ 544 ', so that the straight feature of the formed hole section segment is larger than the straight segment of the cylindrical segment 544 to define that it can be accommodated. The fourth embryo mouth is such that the gap material flows and fills the gap during the forging of the fourth punch 541. Therefore, when the fourth punch 541 is punched into the fourth embryo 64 during the forging, the The portion of the fourth embryo 64 located around the cylindrical section 5 ″ of the fourth punch 541 and the sharp cone section 545 will be relatively squeezed and deformed # The periphery of the fourth punch 541, but because the clearance tolerance was previously reserved, the fourth punch 541 will not be trapped and trapped in the fourth embryo, and can smoothly withdraw from the fourth embryo 64. Pulling fracture will occur. Therefore, the advantages of the present invention are better than the conventional ones: Convenient manufacturing: Using the screw manufacturing method and device of the present invention, four sets of dies can be sequentially used in the same forging part forming machine. Pressing and cold forging can consistently complete the required work flow and shape before rubbing the teeth, without the need for additional turning operations, which is a convenient manufacturing device. And because the parts are forged in the same part, The required operation can be completed in the machine, so the overall operation time can be greatly shortened. For the screw industry that is becoming more and more competitive, it is actually a design that saves man-hours and costs: As mentioned above, the present invention can be used in A screw forming machine in the straight _ page 14 This paper is from China National Counties (CNS) Ya 4 wa (21GX297 public director)
•裝. ,ιτ (請先閱讀背面之注意事項再填寫本頁) I...... Bui. ί 1- i I...... · 534846 五、發明説明（13 ) 接锻造成型’而不須另仁 +肩另仃加工車製，因此可大量 瑕疵品，降低不良率，以節省成本。 惟以上所述者，僅垚士& 一 僅為本發明之較佳可行實施例而已 田不i以此限定本發明實施之範圍，即大凡依本發明申 明專利範圍及發明說明書内容所作之簡單的等效變化與修 飾，皆應仍屬本發明專利涵蓋之範圍内。 ---------t.------IT (請先閲讀背面之注意事項再參'寫本頁) 經濟部智慧財產局員工消費合作社印製 第15頁 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 534846 A7 _._B7 五、發明説明（14 ) 【元件標號對照】 Ψ 經濟部智慧財產局員工消費合作社印製 3 .···· .機台 531 ..後抵端 41···· .第一母模 532 . .•第三衝頭 411 ·· .第一模口 533 . ..六邊形柱段 412·· .後段圓孔 534 . ..錐頸段 42··.· .第二母模 535 . ..錐頭段 421 .. .第二模口 54... • •第四公模 422.. .後段圓孔 541 . • •第四衝頭 423.. .前段開口 542 . ..延伸段 43.·.· .第=母模 543 . ..頸伸段 431 ·. .第三模口 544 . ..圓柱段 432·. ..後段圓孔 545 · ..尖錐段 433 ·. ..圓柱開孔 6…·· ..胚料 44"·, .•第四母模 61 ... ..第一胚品 441 . ..第四模口 611 . "端頭 442. ..後段圓孔 62··· ..第·—胚品 443. ..圓柱開孔 621 . ..端頭 51... ..第一公模 622 . ..錐孔 511 . ..第一衝頭 63... ..第二胚品 512. ..錐孔 631 . ·.端頭 52··· ..第二公模 632 · ..開孔 521. ..第二衝頭 633 . ..六角孔段 522. ..尖錐 634 · ..拓拔孔段 53... ..第二公模 635 · ..尖錐孔段 第16頁 訂 線 (請先閲讀背面之注意事項再填寫本頁) 本纸張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 534846 A7 B7 五、發明説明（15 )636…端緣角隅 64第四胚品 641 ...開孔 642…六角孔段 643…導引孔段 644…錐孔段 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 _：_第17頁 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐）• Install., Ιτ (Please read the precautions on the back before filling this page) I ...... Bui. Ί 1- i I ...... · 534846 V. Description of the invention (13) Forging 'There is no need to make another turn + shoulder to process the turning system, so a large number of defective products can be reduced, and the defect rate is reduced to save costs. However, only the above is a good example of the present invention, which is the only possible and feasible embodiment of the present invention, and it has not been used to limit the scope of the present invention, that is, what is simple according to the scope of the patent claims and the contents of the invention specification All equivalent changes and modifications should still fall within the scope of the patent of the present invention. --------- t .------ IT (Please read the notes on the back before seeing 'Write this page') Printed on the 15th page of this paper China National Standard (CNS) A4 specification (210X297 mm) 534846 A7 _._ B7 V. Description of the invention (14) [Comparison of component numbers] 印 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 3.... 531 .. Back end 41 ........ First female die 532 .. Third punch 411 .. First die opening 533 .. Hexagonal column section 412 .. Rear hole 534 ... .. Conical neck section 42 ..... Second female mold 535 ..... Conical head section 421 ... Second mold mouth 54 ... • Fourth male mold 422 ... Round hole 541 at the rear section. • Fourth punch 423 .. Front section opening 542 .. Extension section 43 ..... = Female die 543 .. Neck extension section 431 .. Third die opening 544 .. Cylinder section 432 .. ..... round hole in the rear section 545 ...... sharp cone section 433 ...... cylindrical opening 6 ..... embryo material 44 " ..... fourth embryo mold 61 ..... first embryo product 441 .. 4th die opening 611. &Quot; Tip 442 .. Rear round hole 62 ······· Embryo 443 .. Round Opening hole 621 .. Tip 51 ..... First male die 622 ... Taper hole 511 ... First punch 63 ... Second taper 512 ... Taper hole 631. · .. Tip 52 ····················· 2 ·············································· ..... The second male mold 635 · .. Straight taper hole section page 16 (please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210X297) (Mm) 534846 A7 B7 V. Description of the invention (15) 636 ... End edge angle 隅 64 Fourth embryo 641 ... Opening 642 ... Hexagonal hole section 643 ... Guide hole section 644 ... Taper hole section (please read first Note on the back, please fill out this page again) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs _: _ Page 17 This paper size applies to China National Standard (CNS) A4 (210X297 mm)