201132864 六、發明說明： 【發明所屬之技術領域】 本發明是關於-種鑽尾螺絲及其成形加工方法，尤指 一種可有效改善現有鑽尾螺絲㈣模具成本高以及生產^ 度慢等問題的鑽尾螺絲構造及成形加卫方法設計。 【先前技術】 如第六圖所示，該鑽尾螺絲之構造主要係於_ 絲頭（51)的桿狀本體（5〇)上形 ’、有螺 驭奴螺紋部（52)，於桿狀本 、；螺紋部（52)下方的尾端形成-鑽尾刀刀段（53)，# 以利用兼具有鑽尾刀刃^ 曰 Μ , ( 3)的鑽尾螺絲設計，使Α兼且 鑽孔、攻牙及鎖固等功能。 、/、 如第七圖所示，前：夕旗J9 A田" 件加㈣之鑽尾螺絲於f造時，其係將料 (B) L沖I _ 干卩（彳）的螺絲胚料 -桿狀鑽/> 77 " 4胚料⑻的®直桿部末段形成 才干狀鑽尾刀刀段（53); 取 周面形成螺” (52" 手'又令圓直桿部(B ”外 系、、文口P (52) ’並於輾壓過程 一 刃段（53)周邊的革.嘉 併去除鑽尾刀 ，而完成鑽尾螺絲的成形加工。 刖關鑽尾螺絲的冲屋成 的成形模具及機具，已能夠產 相：業者所開發 品。但對於如：國W隹 的鑽尾螺絲成 国際糕準編號5號以上、直彳 以上或不錄鋼材質之鑽尾螺絲等，因直尺寸^ 硬，較難以沖壓成形 八尺寸較大或材質堅 即是模具成本居高不τ 以㈣技術難題， 刃的長度較長、寬卢較堊成形用模具隨著鑽尾刀 於難以成形的胚材等:’而使其沖塵面積加大或是加工 的胚材專’加工機具相對地必須輪出較大的沖 201132864 塵力量’因此，模具承受的沖壓力量就非常大，而為保持 鑽尾螺絲的鑽尾刀刀的銳利度，故使用兩相對合的沖模於 冲歷成形鑽尾刀刀時，兩沖模間必須盡可能㈣合：然 而’ 一旦待沖塵加工的螺絲胚料材質硬度不穩定或螺絲胚 料未確實定位（如空釘或壞釘·..），即會造成兩沖模直接相 對碰撞，因沖壓成形使用的力量大，故兩沖模對撞時，輕 則局部損壞、重則裂料。一旦沖模發生裂料情事，沖模即 無法加以整修而須廢棄，以致業者在模具成本方面須花費 較多的費用。 再者，該鑽尾螺絲以沖麗手段成形鑽尾刀刃時，一併 成形排屬溝’基於沖壓加工的限制條件，排屑溝無法形成 螺旋狀之溝槽，因排屑溝之角度過於平行鑽尾螺絲的轴 向，不利於鑽尾螺絲鑽入工件中產生的碎屑排出。 【發明内容】 本發明之主要目的在於捭处 _ _ 工古土 a 的在於k供一種鑽尾螺絲及其成形加 方法’希藉此設計’改善現有鑽尾螺絲因鑽尾刀刀長度 致沖壓力量過大而易於發生模具損耗率偏大，模具成 本向、以及排屑不良等缺點。 為達成前述目的’本發明所設計之鑽尾螺絲係包含： 一螺絲頭； 一螺絲本段’係成料該㈣職端，料本段 —本段桿部以及㈣於本段桿部外周面的本段料部·、 —排屑段，係成形於螺絲本段 m · %，排屑段具有一排 ^干/以及成形於排屑桿部外周面的排屑螺紋部，排屑螺 P中形成螺旋排屑溝’排屑桿部一端銜接本段桿部，且 201132864 排屑桿部直徑小於本段桿部直徑 _ 段桿部直徑；以及 。卩外杈接近本 -鑽尾刀刃，係成形於排屑段底端的 尾刀Π寬度小於本段螺紋部且略大於本段桿部直：’鑽 本發明另-設計之鑽尾螺絲成形加工方法係包: 以沖壓手段使圓桿狀胚料本體一端 3. 使胚料本體尾端形志古"私 成螺、、糸碩，以及 不體尾直赠小的圓桿狀 以沖壓手段令小桿徑段尾端形成 直徑的扁平狀鑽尾刀刃；以及 又於小桿徑段 部二料本體的本段外周面形成本段螺紋 “、才干徑段外周面形成排屑螺紋部，而構 螺絲的成形製造。 疋成鑽尾 ^發明藉由前述鑽尾螺絲構造以及成形… 其發明特點主要是㈣鑽尾㈣尾端 平^201132864 VI. Description of the Invention: [Technical Field] The present invention relates to a type of self-drilling screw and a forming method thereof, and in particular to an article which can effectively improve the problems of high cost of the existing drilling screw (4) and slow production. Drilling screw construction and forming and strengthening method design. [Prior Art] As shown in the sixth figure, the construction of the self-drilling screw is mainly on the rod-shaped body (5〇) of the _ wire head (51), and has a threaded portion (52) of the threaded rod. The tail end under the threaded portion (52) forms a drill-drilling knife segment (53), which is designed by using a self-drilling screw with a drill-edge blade, (3) Drilling, tapping and locking functions. , /, As shown in the seventh figure, the former: Xiqi J9 A field " piece plus (four) of the tail screw in the f, when it is made of material (B) L rushed I _ dry 彳 (彳) screw embryo Material-rod drill/> 77 " 4 blanks (8)® at the end of the straight section form a dry-drilled knives (53); take the circumferential surface to form a snail" (52" hand' and round straight Department (B "external,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The forming dies and tools of the rushing house of the screw have been able to produce the phase: the product developed by the manufacturer. However, for example, the boring screw of the national W隹 is made up of the international cake number No. 5 or above, or above the steel material. Drilling screws, etc., because of the straight size ^ hard, it is more difficult to press and form eight large size or the material is strong, the mold cost is high, not τ. (4) Technical problems, the length of the blade is longer, and the width of the blade is longer than that of the forming mold. Drilling knives in difficult-to-form embryo materials, etc.: 'But the dust-removing area is increased or the processed embryonic material special processing tool has to be rotated relatively large rush 201132864 Strength' Therefore, the stamping force of the mold is very large, and in order to maintain the sharpness of the tail cutter of the self-drilling screw, when using two opposite dies to form the boring cutter, the two dies must be Possible (4): However, once the hardness of the screw blank material to be dusted is unstable or the screw blank is not positioned properly (such as empty nails or bad nails..), the two dies will directly collide with each other due to stamping. The force of use is large, so when the two dies are collided, the parts are partially damaged and the material is cracked. Once the dies are cracked, the dies cannot be refurbished and must be discarded, so that the manufacturer has to pay more for the cost of the mold. Furthermore, when the drill-tail screw is formed into a drill-edge blade by means of a flushing method, the groove is formed together. Based on the limitation of the stamping process, the chip groove cannot form a spiral groove, because the angle of the chip groove is too parallel The axial direction of the self-drilling screw is not conducive to the discharge of debris generated by the drilling screw into the workpiece. SUMMARY OF THE INVENTION The main purpose of the present invention is to provide a _ _ _ ancient soil a in the k for one The self-drilling screw and its forming and adding method 'I am designed to improve the existing punching screw's excessive punching force due to the length of the drilling cutter, which is prone to large mold loss rate, mold cost direction, and poor chip removal. To achieve the foregoing objectives, the drill-tipped screw designed by the present invention comprises: a screw head; a screw section is formed into the material (4), the section of the section - the section of the section and (4) the outer circumference of the section of the section In this section, the material part and the chip removal section are formed in the screw section m · %, and the chip discharge section has a row of dry / and a chip threading portion formed on the outer peripheral surface of the chip discharging rod portion, and the chip discharging screw P Forming a spiral flute ditch' one end of the chip fluting portion is connected to the rod portion of the section, and the diameter of the chipping rod portion of the 201132864 is smaller than the diameter of the rod portion of the section of the section; The outer cymbal is close to the boring edge, and the width of the tail knives formed at the bottom end of the chip discharging section is smaller than the threading part of the section and is slightly larger than the straight part of the section: 'Drilling the invention-designed drilling screw forming processing method The bag: The end of the body of the round rod-shaped blank is made by means of stamping. 3. The end of the body of the billet is shaped like a snail, and the snail is made up of a small round rod. The end of the small rod diameter section forms a flat-shaped drill tail blade of the diameter; and the outer peripheral surface of the second section body of the small rod diameter section forms the thread of the section, and the outer peripheral surface of the diameter section forms a chip threading portion, and The forming of the screw is made into a drill tail. The invention is constructed and formed by the aforementioned self-drilling screw. The invention features mainly (4) the tail end of the drill tail (four)
尾刀刀，搭配合縮徑的排屑段之設計，使螺旋排 夠的空間排屑，以取代傳統鑽尾刀刃的排屬槽，_此㈣ 二刀刃沖壓模具的尺寸’降低沖壓成形鑽尾= 力！，減輕沖壓鑽尾刀刃所使用的機械與模“、的 幅提昇鑽尾螺絲穩定的品質，降低製造成盆：’大 用於製成大尺寸或超長的鑽尾螺絲或’、’別適 易加工材料製造的錢尾螺絲。不錄鋼材質等不 絲係以輾壓方式同時於 以及於小桿徑段形成排 有利於鑽尾螺絲鑽入工 另一方面，本發明係令鑽尾螺 胚料本體之本段形成本段螺紋部， 屑螺紋部，而形成螺絲狀排屑溝， 件中產生的碎屑排出。 201132864 【實施方式】 如第一、二圖所示，係本 佳實施例，由圖中可以尾螺絲之數種較 了以見及，所述鑽尾螺絲係包 頭（1)、一螺絲本段（2)、— 系、，，糸 ；排眉段（3)以及一鑽尾刀刀（4)， 其中· ‘六角形或平頂圓錐狀… 平頂圓錐狀等實施型態， /、角形或十字形等凹洞，The tail knife, combined with the design of the chip-removing section of the reduced diameter, allows the space of the spiral row to be chipped to replace the groove of the traditional drill-edge blade. _ This (four) the size of the two-blade stamping die 'reduced the stamping forming tail = Force! To reduce the stability of the mechanical and die used in the stamping of the cutting edge, and to improve the quality of the drill-end screw, reduce the manufacturing into a basin: 'large for making large or long drill-end screws or ', ' The money tail screw manufactured by the easy-to-machine material. The non-recording steel material and the like are not in the form of rolling, and the formation of the row in the small rod diameter section is advantageous for the drilling of the tail screw. On the other hand, the present invention is a drill tail screw. This section of the blank body forms the threaded portion and the threaded portion of the thread to form a screw-like chip drain, and the debris generated in the piece is discharged. 201132864 [Embodiment] As shown in the first and second figures, it is the best implementation. For example, the number of tail screws that can be seen in the figure is similar. The drill-end screw is a head (1), a screw section (2), a system, a 糸, an eyebrow section (3), and A boring knife (4), where · 'hexagonal or flat-topped conical shape... flat-topped conical shape, /, angle or cross, etc.
該螺絲頭（1)可為半圓球狀 等，其中螺絲頭（1)為半圓球狀、 螺絲頭（1)頂面尚可進一步形成一 用以提供工具插接其中。 該螺絲本段（2)係成形於該螺絲頭⑴底端向下延伸， 螺絲本段(2)具有一本段桿部(2〇)以及成形於本段桿部⑽ 外周面的本段螺紋部（21)。 該排屑段（3)係成形於螺絲本段（2)底端向下延伸，排 屑段（3)具有一排屑桿部（3〇)以及成形於排屑桿部（3…外周 面的排屑螺紋部（31)，排屑螺紋部（31)中形成螺旋排屑溝 (32)，排屑桿部（30)一端銜接本段桿部（2〇)，且排屑桿部 (30)直徑小於本段桿部（2〇)直徑，排屑螺紋部ο”外徑小於 接近本段桿部（20)直徑。 如第一至二圖所示者，該鑽尾刀刃（4)係成形於排屑段 (3)底端的短尖形扁平體，鑽尾刀刃（4)的寬度小於本段螺 紋部（21)且略大於本段桿部（2〇)直徑。 如第一圖所示的較佳實施例，排屑段（3)的排屑螺紋部 (31)包含有數道螺紋以環繞排屑桿部（3〇)少於一圈方式地 自鑽尾刀刃（4)延伸至螺絲本段（2)。 如第二、三圖所示的另一較佳實施例，排屑段的排 201132864 屑敎部（31)包含至少―道賴以環繞㈣桿部（3〇)至少 圈方式自鑽尾刀刃（4)延伸至螺絲本段（2)。 如第二、三圖所示的較佳實施例，該螺絲本段（2)鄰接 排屑段（3)的區段形成一朝排屑段（3)尺寸漸縮的錐段，並 於錐段外周面形成錐狀螺紋段（21 1)。 如第四圖所示，該鑽尾螺絲於使用時，使用者可以工 具連接該鑽尾螺絲之㈣頭⑴，並先以該短尖形扁平的鑽 尾刀刃⑷鑽人工件（5)中，m(5)時，其中產生的碎 鲁屑即可沿著排屑段(3)的螺旋排屑溝(32)順利排出，接續由 螺絲本段（2)的本段螺紋部（21)直接對工件（5)被鑽的孔洞攻 設螺紋而螺入工件(5)，其中，可藉由錐狀螺紋段⑺”的 設計^使料本段附以漸進方式於工件（5)鑽孔的孔洞 中攻設螺紋，以利於螺紋的成形。 如第五圖所示，本發明所設計鑽尾螺絲成形加工方 法，其包含以下步驟： 乂冲壓手奴使一圓桿狀胚料本體(A) 一端形成螺絲頭 •⑴，以及使胚料本體(A)本段(A”尾端以縮徑方式形成一 直徑較小的圓桿狀小桿徑段（A2); 以沖壓手段令小桿徑段（A2)尾端形成一寬度略大於胚 料本體㈧之本段（A1)直徑的短形扁平狀鑽尾刀刀（4);以 及 以輾壓手段令胚料本體_本段（A1)外周面形成本段 螺紋部⑺），以及令小桿徑段（A2)外周面形成排屑螺紋部 (31)，而完成鑌尾螺絲的成形加工。前述以沖壓手段成形 胚料本體（A)具有螺絲頭⑴及本段（A1)尾端缩徑形成—小 201132864 桿徑段（A2)的步驟中’尚可令胚料本體（A)的本段（A1)鄰接 小桿徑段（A2)的區段形成一自本段（A1)朝小桿徑段（A2)尺 寸漸縮的錐段（A11)’於胚料本體（A)的本段（A1)外周面輾 壓形成本段螺紋部（21)時，於錐段（A11)處形成錐狀螺紋段 (211)〇 前述沖壓手段令小桿徑段（A2)尾端形成扁平狀鑽尾刀 刃（4)時，一般常會形成毛邊（4〇)，所述毛邊（4〇)可於輾壓 成形本段螺紋部（21)及排屑螺紋部（31 )時一併被去除。 本發明藉由前述鑽尾螺絲構造以及成形加工方法設 計，其主要利用鑽尾螺絲尾端形成短形扁平鑽尾刀刀，搭 配合縮徑的排屑段之設計，使螺旋排屑溝有足夠的空間^ 屬，以取代傳統鑽尾刀刃的排屑槽，藉此縮短鑽尾刀刀沖 疋模具的尺寸’降低沖壓成形鑽尾刀刃所須的力量減輕 沖壓鑽尾刀刃所使用的機械與模具的負荷，大幅提昇鑽尾 螺絲穩定的品f，降低製造成本，使其特別適用大尺寸或 超長的鑽尾螺絲或不錄鋼材質等不易加工的鑽尾螺絲。 再者，本發明係令鑽尾螺絲係以輾壓方式同時於胚料 本體之本段形成本段螺紋部’以及於小桿徑段形成排屑螺 紋部，而形成螺絲狀排屑溝，有利於鑽尾螺絲鑽入工件中 產生的碎屑排出。 據上所述，本發明所設計之鑽尾螺絲構造及其製法確 可有效克服現有冑尾螺絲因鑽尾刀刀&度長以致沖壓力量 過'而易於發生模具損耗率偏大，模具成本高、以及排屑 不良等缺點’而為—極具產業利用價值之鑽尾螺絲發明。 【圖式簡單說明】 201132864 第一圖係本發明鑽 圖。 毛螺絲第一較佳實施例的平面示意 鑽尾螺絲第二較佳實施例的平面示意 第—圖係本發明 圖。 第二圖係第二圖所 觀視角度的平面示意圖 第四圖係本發明鑽 圖。 不鑽尾螺絲第二較佳實施例的另一 0 尾螺絲鑽入工件中的使用狀態參考The screw head (1) may be a semi-spherical ball or the like, wherein the screw head (1) is a semi-spherical shape, and the top surface of the screw head (1) may be further formed to provide a tool for insertion therein. The screw section (2) is formed to extend downwardly from the bottom end of the screw head (1), and the screw section (2) has a section of the rod portion (2〇) and the thread of the section formed on the outer peripheral surface of the rod portion (10) of the section Department (21). The chip removing section (3) is formed to extend downward at the bottom end of the screw section (2), the chip discharging section (3) has a chip removing rod portion (3 turns) and is formed on the chip discharging rod portion (3... outer peripheral surface) The chip threading portion (31) forms a spiral chip groove (32) in the chip threading portion (31), and the chip removing rod portion (30) is connected to the rod portion (2〇) at one end, and the chip discharging rod portion ( 30) The diameter is smaller than the diameter of the rod portion (2〇) of the section, and the outer diameter of the chip threading portion ο" is smaller than the diameter of the rod portion (20) close to the section. As shown in the first to second figures, the tail cutting edge (4) The short pointed flat body formed at the bottom end of the chip discharge section (3), the width of the drill cutting edge (4) is smaller than the threaded portion (21) of the section and slightly larger than the diameter of the rod portion (2〇) of the section. In the preferred embodiment shown, the chip threading portion (31) of the chip evacuation section (3) includes a plurality of threads extending from the tailing blade (4) in less than one turn around the chip removing bar (3 turns). To the screw segment (2). As another preferred embodiment shown in the second and third figures, the row of the chip evacuation section 201132864 has a crucible portion (31) containing at least "way" to surround the (four) stem portion (3 turns). At least the loop mode extends from the drill tail blade (4) to Wire segment (2). As shown in the preferred embodiment of the second and third figures, the section of the screw (2) adjacent to the chip discharge section (3) is formed to be tapered toward the chip discharge section (3). a tapered section and a tapered threaded section (21 1) on the outer peripheral surface of the tapered section. As shown in the fourth figure, the user can connect the (four) head (1) of the self-drilling screw with the tool. First, the short pointed flat drill tail blade (4) is drilled into the workpiece (5), m(5), and the generated debris can be along the spiral chip (32) of the chip discharge section (3). Smoothly discharged, the screw thread (21) of this section of the screw (2) is directly tapped on the hole drilled by the workpiece (5) and screwed into the workpiece (5), wherein the tapered thread section (7) The design of the material is attached to the hole of the workpiece (5) in a progressive manner to tap the thread to facilitate the formation of the thread. As shown in the fifth figure, the method for forming the tail screw of the present invention is The method comprises the following steps: 乂 stamping the hand slave to form a screw head (A) at one end forming a screw head • (1), and making the blank body (A) the end of the section (A) with a reduced diameter Forming a small diameter rod-shaped small rod diameter section (A2); forming a short flat shape having a width slightly larger than the diameter of the section (A1) of the blank body (eight) by a punching means The boring cutter (4); and the burr means to form the threaded portion (7) of the outer peripheral surface of the blank body _ _ (1), and the outer peripheral surface of the small rod diameter section (A2) to form the chip threading portion (31), the forming process of the dovetail screw is completed. The step of forming the blank body (A) by the pressing means has the steps of forming the screw head (1) and the end portion of the section (A1) to reduce the diameter to form the small 201132864 rod diameter section (A2). In the middle of the section (A1) of the billet body (A), the section adjacent to the small rod section (A2) forms a cone section which is tapered from the section (A1) toward the small rod section (A2). (A11) 'When the outer peripheral surface of the upper portion (A1) of the blank body (A) is pressed to form the thread portion (21) of the present stage, a tapered thread portion (211) is formed at the tapered portion (A11). When the tail end of the small rod diameter section (A2) is formed into a flat drill tail blade (4), a burr (4 〇) is generally formed, and the burr (4 〇) can be press-formed into the threaded portion (21) of the section and The chip threading portion (31) is also removed. The invention is designed by the above-mentioned self-drilling screw structure and forming processing method, and mainly uses a tail end of a drilling screw to form a short flat drill-tail knife, and the design of the chip-removing section with the reduced diameter makes the spiral chip ditch sufficient. The space ^ is used to replace the chip flutes of the traditional drill-edge cutting edge, thereby shortening the size of the drilling-edge knife punching die. 'Reducing the force required for the stamping-drilling cutting edge to reduce the mechanical and mold used for punching the cutting edge. The load greatly improves the stability of the drill-end screw and reduces the manufacturing cost, making it particularly suitable for large-size or ultra-long drill-end screws or non-recording drill-end screws. Furthermore, the present invention is to make the drill-end screw form the threaded portion of the present section in the same section of the blank body by rolling, and form the thread-removing thread portion in the small-diameter section to form a screw-shaped chip discharge groove. The debris generated by drilling the drill screw into the workpiece is discharged. According to the above description, the construction of the self-drilling screw of the present invention and the manufacturing method thereof can effectively overcome the existing moldtail screw, which is prone to the large loss rate of the mold due to the long-distance punching force of the end-drilling knife and the mold cost. The shortcomings such as high and poor chip evacuation are the invention of the tail screw with great industrial value. [Simple description of the drawings] 201132864 The first figure is a drill drawing of the present invention. A plan view of a second preferred embodiment of a first preferred embodiment of a screw is shown in the drawings. The second drawing is a plan view of the viewing angle of the second drawing. The fourth drawing is a drilling diagram of the present invention. Usage status reference of another 0-tail screw of the second preferred embodiment of the non-drilling screw drilled into the workpiece
第五圖係本發明鑽尾螺絲製造方法的流程圖 第六圖係習用鑽尾螺絲的平面示意圖。 第七圖係習用鑽尾螺絲的製造流程圖。The fifth drawing is a flow chart of the method for manufacturing the drill tail screw of the present invention. The sixth figure is a plan view of a conventional self drilling screw. The seventh figure is a manufacturing flow chart of the conventional drilling screw.
【主要元件符號說明】 (1) 螺絲頭 (2) 螺絲本段 (21)本段螺紋部 (3) 排屑段 (31)排屑螺紋部 (4) 鑽尾刀刀 (A) 胚料本體 (A11)錐段 (5 〇)桿狀本體 (52)螺紋部 (B) 螺絲胚料 (2 0)本段桿部 (211)錐狀螺紋段 (30)排屑桿部 (32)螺旋排屬溝 (40)毛邊 (A1)本段 (A2)小桿徑段 (51)螺絲頭 (53)鑽尾刀刀段 (B1)圓直桿部[Description of main component symbols] (1) Screw head (2) Screw This section (21) This section of threaded part (3) Chip discharge section (31) Chip threading section (4) Drilling knife (A) Blank body (A11) Cone section (5 〇) Rod-shaped body (52) Threaded part (B) Screw blank (2 0) This section rod (211) Tapered thread section (30) Chip arranging part (32) Spiral row Genre groove (40) Burr (A1) This section (A2) Small rod diameter section (51) Screw head (53) Drilling knife section (B1) Round straight part