TWI571335B - Drilling screw forming mold and its products - Google Patents
Drilling screw forming mold and its products Download PDFInfo
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- TWI571335B TWI571335B TW105114546A TW105114546A TWI571335B TW I571335 B TWI571335 B TW I571335B TW 105114546 A TW105114546 A TW 105114546A TW 105114546 A TW105114546 A TW 105114546A TW I571335 B TWI571335 B TW I571335B
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- 238000005553 drilling Methods 0.000 title claims description 21
- 238000000465 moulding Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 12
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Description
本發明係為一種鑽尾螺絲成型模具，特別是一種降低模具損耗、提高鑽尾螺絲品質之成型模具。 The invention relates to a tail screw forming mould, in particular to a mould for reducing the loss of the mould and improving the quality of the tail screw.
按，由於鑽尾螺絲具有鑽孔、攻牙及旋鎖一次作業之功效，因此目前鑽尾螺絲係廣泛應用於金屬材質物件之螺鎖結合，而該種鑽尾螺絲主要包含有一螺桿，螺桿頂端形成一頭部，螺桿另一端則形成一鑽尾部，該鑽尾部末端形成一錐面，鑽尾部並設有兩對稱之排屑槽，排屑槽外側則形成刀刃；藉此，利用鑽尾部可鑽削金屬物件，並使鑽尾螺絲之螺桿鎖入物件，同時，鑽削過程中所產生殘屑可隨排屑槽順勢向上排出。 According to the drill screw, the tapping screw has the function of drilling, tapping and twisting once, so the current drilling screw is widely used in the screw-lock combination of metal materials, and the screw has mainly a screw and a screw tip. Forming a head, the other end of the screw forms a drill tail, the end of the drill tail forms a tapered surface, and the tail portion is provided with two symmetrical chip flutes, and the outer side of the chip flute forms a cutting edge; The metal object is drilled and the screw of the self-drilling screw is locked into the object, and at the same time, the debris generated during the drilling process can be discharged upward with the chip flute.
而該種鑽尾螺絲之製造，係利用一對鑽尾螺絲成型模具面對面相互壓合衝擊，使置於兩成型模具間的工件受衝擊擠壓而變形，藉以變形為成型模具上所設之鑽尾特徵，同時並利用鑽尾特徵所具有之切刃邊切除多餘之餘邊，即可形成鑽尾部者；而查，目前之鑽尾螺絲成型模具，為方便作衝擊作業及提高衝擊之閉合性，其衝擊面係皆呈直立狀，而因為順利將鑽尾螺絲衝擊擠壓成型並切除餘邊，因此兩鑽尾螺絲成型模具壓合衝擊之作用力非常大，其很容易造成鑽尾螺絲成型模具之鑽尾特徵因撞擊而損壞，更甚者，亦有造成鑽尾螺絲成型模具爆模、毀壞之情事發生者；而為降低鑽尾螺絲成型模具爆模、毀壞之機率，逐有業者藉由降低衝擊速度 之方式來製備鑽尾螺絲，惟因衝擊速度變慢，其作用時間增加，不僅增加製備成本，且工件亦很容易因作用時間較長而產生應力應變，使工件之品質有不佳之情事發生者。 The manufacture of the self-drilling screw is performed by using a pair of self-drilling screw forming molds to press the surface to each other, so that the workpiece placed between the two forming molds is deformed by impact and deformation, thereby being deformed into a drill provided on the forming mold. The tail feature, at the same time and using the cutting edge of the cutting edge to cut the excess margin, can form the tail of the drill; and check, the current drilling screw forming mold, for easy impact operation and improve the closure of the impact The impact surface is in an upright shape, and because the drilling screw is squeezed and formed and the remaining edge is cut off, the force of the two-tail screw forming mold pressing impact is very large, which easily causes the tail screw to be formed. The characteristics of the drill tail of the mold are damaged by the impact, and even more, the occurrence of the explosion of the drilling screw forming mold is caused by the explosion, and the damage is caused by the manufacturer. Reduced impact speed The method of preparing the tail screw is only because the impact speed is slow, and the action time is increased, which not only increases the preparation cost, but also the workpiece is easily strained and strained due to the long acting time, so that the quality of the workpiece is not good. .
本發明之主要目的，改善上述之缺失，俾提供一種可降低模具損耗、提高鑽尾螺絲品質之成型模具。 The main object of the present invention is to improve the above-mentioned defects, and to provide a molding die which can reduce the loss of the mold and improve the quality of the self-drilling screw.
為達到上述目的，本發明之鑽尾螺絲成型模具，包含有二相對應之模具本體，兩模具本體上各開設有一成型模穴，該模具本體設有衝擊面，模具本體對應於成型模穴之左、右兩側分別設有第一導料斜面、第二導料斜面，該第一導料面與第二導料面之端緣係具有一段落差，且第一導料面與成型模穴間並設有第三導料斜面，該第一導料斜面之頂部係凸出於衝擊面，使形成一上高下低之傾斜面，該第二導料斜面之頂部係低凹於衝擊面，使形成一上低下高之傾斜面，同時，該第三導料斜面之頂部係凸出於衝擊面，使形成一上高下低之傾斜面，而該模具本體對應成型模穴之底側則設有鑽頭成型面；又，該成型模穴係隨模具本體之第一導料斜面、第二導料斜面及第三導料斜面之傾斜面形成傾斜，且成型模穴之右半部係形成弧形面，成型模穴之左半部形成一向左傾斜之傾斜面，使該成型模穴概呈上寬下窄狀； 藉由上述構造設計，俾提供一種可降低模具損耗、提高鑽尾螺絲品質之成型模具。 In order to achieve the above object, the tail screw forming mold of the present invention comprises two corresponding mold bodies, and each of the mold bodies defines a molding cavity, and the mold body is provided with an impact surface, and the mold body corresponds to the molding cavity. a first guiding bevel and a second guiding bevel are respectively disposed on the left and right sides, and the first guiding surface and the second guiding surface have a step difference, and the first guiding surface and the molding cavity And a third guiding bevel is arranged, the top of the first guiding bevel protrudes from the impact surface, so as to form an upper inclined surface, the top of the second guiding bevel is concave on the impact surface So that an upper inclined surface with a lower height is formed, and at the same time, the top of the inclined surface of the third guiding material protrudes from the impact surface to form an inclined surface of upper and lower height, and the bottom of the mold body corresponds to the bottom side of the molding cavity The drill molding surface is provided; further, the molding cavity is inclined with the inclined surface of the first guide bevel, the second guide bevel and the third guide bevel of the mold body, and the right half of the molding cavity is Forming a curved surface, the left half of the forming cavity forms a leftward The inclined ramp surface, so that the mold cavity shape wider at almost goes; With the above structural design, the crucible provides a molding die which can reduce the loss of the mold and improve the quality of the self-drilling screw.
10‧‧‧模具本體 10‧‧‧Mold body
11‧‧‧衝擊面 11‧‧‧ Impact surface
12‧‧‧第一導料斜面 12‧‧‧First guide bevel
13‧‧‧第二導料斜面 13‧‧‧Second guide bevel
14‧‧‧第三導料斜面 14‧‧‧3rd guide bevel
15‧‧‧鑽頭成型面 15‧‧‧Drill forming surface
20‧‧‧成型模穴 20‧‧‧Forming cavity
21‧‧‧弧形面 21‧‧‧ curved surface
22‧‧‧傾斜面 22‧‧‧Sloping surface
30‧‧‧工件 30‧‧‧Workpiece
31‧‧‧鑽尾部 31‧‧‧Drill tail
第1圖係本發明之立體圖。 Figure 1 is a perspective view of the present invention.
第2圖係本發明之前視圖。 Figure 2 is a front view of the invention.
第3圖係本發明之上視圖。 Figure 3 is a top view of the present invention.
第4圖係本發明之左側視圖。 Figure 4 is a left side view of the present invention.
第5圖係本發明之右側視圖。 Figure 5 is a right side view of the present invention.
第6圖係本發明藉由二模具本體衝擊工件之示意圖(一)。 Figure 6 is a schematic view (1) of the present invention for impacting a workpiece by two mold bodies.
第7圖係第6圖之I-I剖視圖。 Figure 7 is a cross-sectional view taken along line I-I of Figure 6.
第8圖係本發明藉由二模具本體衝擊工件之示意圖(二)。 Figure 8 is a schematic view (2) of the present invention for impacting a workpiece by two mold bodies.
第9圖係第8圖之Ⅱ-Ⅱ剖視圖。 Figure 9 is a cross-sectional view taken along line II-II of Figure 8.
第10圖係利用本發明所衝擊製作之形成鑽尾部之工件。 Figure 10 is a view of a workpiece formed by the impact of the present invention to form a drill tail.
有關本發明為達到目的所運用之技術手段及其方法，茲謹再配合第1圖至第10圖所示之實施例，詳細說明如下：如第1~5圖所示，本發明之鑽尾螺絲成型模具，包含有二相對應之模具本體10，兩模具本體10上各開設有一成型模穴20，該模具本體10設有衝擊面11，模具本體10對應於成型模穴20之左、右兩側分別設有第一導料斜面12、第二導料斜面13，該第一導料面12與第二導料面13之端緣係具有一段落差，且第一導料面12與成型模穴20間並設有第三導料斜面14，該第一導料斜面12之頂部係凸出於衝擊面11，使形成一上高下低之傾斜面，該第二導料斜面13之頂部係低凹於衝擊面11，使形成一上低下高之傾斜面，同時，該第三導料斜面14之頂部係凸出於衝擊面11，使形成一上高下低之傾斜面，而該模具本體10對應成型模穴20之底側則設有鑽頭 成型面15；又，該成型模穴20係隨模具本體10之第一導料斜面12、第二導料斜面13及第三導料斜面14之傾斜面形成傾斜，且成型模穴20之右半部係形成弧形面21，成型模穴20之左半部形成一向左傾斜之傾斜面22，使該成型模穴20概呈上寬下窄狀。 The technical means and method for using the present invention to achieve the object are described in detail with the embodiments shown in Figs. 1 to 10, as follows: As shown in Figs. 1 to 5, the tail of the present invention is shown. The screw forming mold includes two corresponding mold bodies 10, and each of the mold bodies 10 defines a molding cavity 20, and the mold body 10 is provided with an impact surface 11, and the mold body 10 corresponds to the left and right of the molding cavity 20. The first guiding material inclined surface 12 and the second guiding material inclined surface 13 are respectively disposed on both sides, and the first guiding material surface 12 and the second guiding material surface 13 have a step difference, and the first guiding material surface 12 is formed. The mold cavities 20 are provided with a third guide bevel 14 , and the top of the first guide bevel 12 protrudes from the impact surface 11 to form an upper and lower inclined surface, and the second guide bevel 13 The top portion is concavely concave on the impact surface 11 to form an inclined surface with an upper lowering and lower height, and at the same time, the top portion of the third guiding inclined surface 14 protrudes from the impact surface 11 so as to form an inclined surface with upper and lower heights, and The mold body 10 is provided with a drill bit corresponding to the bottom side of the molding cavity 20 Forming surface 15; further, the forming cavity 20 is inclined with the inclined surface of the first guiding bevel 12, the second guiding bevel 13 and the third guiding bevel 14 of the mold body 10, and the right of the molding cavity 20 The half system forms a curved surface 21, and the left half of the molding cavity 20 forms a sloped surface 22 inclined to the left, so that the molding cavity 20 is generally wide and narrow.
藉由上述構造，如第2、3、4、5圖所示，由於本發明模具本體10之第一導料斜面12係為上高下低之傾斜面，第二導料斜面13係為上低下高之傾斜面，且第一導料斜面12與第二導料斜面13係具有一段落差，使第一導料斜面12與第二導料斜面13並非同一平面狀，並使第一導料斜面12之上緣與成型模穴20之傾斜面22上緣相接形成作用點A，當二模具本體10相對放置，並將工件30置放於二模具本體10間以作衝壓作業，使形成鑽尾部時，如第6、7圖所示，由於模具本體10之第一導料斜面12及第三導料斜面14係為上高下低傾斜面之設計，該第二導料斜面13係為上低下高傾斜面之設計，當二模具本體10靠近時，該模具本體10之作用點A即會先與工件30衝擊接觸，使工件30先受擠壓而變形，而隨二模具本體10持續靠合移動，工件30即根據成型模穴20之形狀及第一導料斜面12、第二導料斜面13及第三導料斜面14之傾斜導引，使工件30係由上往下逐漸受力變形，即形成鑽尾部31，此時，因模具本體10上第一導料斜面12、第二導料斜面13及第三導料斜面14之設計，當模具本體10靠合時，該工件30因受成型模穴20之推擠而上移及偏轉(如第8、9圖所示)，藉以使模具本體10可確實緊密靠合，且工件30末端則可依成型模穴20之形狀而確實形成鑽尾部31(如第10圖所示)，接著將該具鑽尾部31之工件30進行搓牙作業後，即可形成鑽尾螺絲。 With the above configuration, as shown in the second, third, fourth, and fifth figures, since the first guide bevel 12 of the mold body 10 of the present invention is an upper, lower, lower inclined surface, the second guide bevel 13 is upper. The upper and lower inclined surfaces 12 and the second guiding inclined surface 13 have a step difference, so that the first guiding inclined surface 12 and the second guiding inclined surface 13 are not in the same plane shape, and the first guiding material is made The upper edge of the inclined surface 12 is in contact with the upper edge of the inclined surface 22 of the molding cavity 20 to form an action point A. When the two mold bodies 10 are oppositely placed, the workpiece 30 is placed between the two mold bodies 10 for punching operation to form When the tail portion is drilled, as shown in FIGS. 6 and 7, since the first guide bevel 12 and the third guide bevel 14 of the mold body 10 are designed as upper, lower, lower and lower inclined faces, the second guide bevel 13 is For the design of the upper and lower high inclined surfaces, when the two mold bodies 10 are close, the action point A of the mold body 10 will first be in impact contact with the workpiece 30, so that the workpiece 30 is first deformed by deformation, and the two mold bodies 10 are deformed. Continuously moving, the workpiece 30 is shaped according to the shape of the molding cavity 20 and the first guiding bevel 12 and the second guiding bevel 13 and the inclined guiding of the third guiding bevel 14 so that the workpiece 30 is gradually deformed from top to bottom, that is, the drilling tail portion 31 is formed. At this time, the first guiding bevel 12 and the second guiding on the mold body 10 are formed. The design of the material bevel 13 and the third guide bevel 14 is such that when the mold body 10 is abutted, the workpiece 30 is moved up and deflected by the pushing of the molding cavity 20 (as shown in Figures 8 and 9). The mold body 10 can be surely abutted closely, and the end of the workpiece 30 can form the drill tail portion 31 according to the shape of the molding cavity 20 (as shown in FIG. 10), and then the workpiece 30 having the drill tail portion 31 can be smashed. After the teeth work, the self-drilling screws can be formed.
由是，從以上之所述及圖式可知，本發明確具有如下之優點： Therefore, from the above description and the drawings, the present invention has the following advantages:
(一)由於本發明模具本體10之第一導料斜面12與第二導料斜面13並非同一平面且具有一段落差，使工件30係先以點接觸之方式受衝擊擠壓變形後，隨著二模具本體10持續靠合接近，該工件30則以面接觸之方式，使可依據成型模穴20之擠壓變形而形成鑽尾部31；因此，利用本發明之模具本體10進行衝擊擠壓時，其可使工件30由上而下分段逐漸受力，降低衝擊力過於集中之缺失，進而可避免工件30之損壞，且可提高工件30所形成鑽尾部31之品質者。 (1) Since the first guide bevel 12 and the second guide bevel 13 of the mold body 10 of the present invention are not in the same plane and have a step difference, the workpiece 30 is first subjected to impact deformation by point contact, followed by The two mold bodies 10 are continuously close to each other, and the workpiece 30 is formed in a surface contact manner so that the drill tail portion 31 can be formed according to the extrusion deformation of the molding cavity 20; therefore, when the mold body 10 of the present invention is used for impact pressing The workpiece 30 can be gradually stressed by the upper and lower segments, thereby reducing the lack of concentration of the impact force, thereby avoiding the damage of the workpiece 30, and improving the quality of the drill tail portion 31 formed by the workpiece 30.
(二)由於本發明之第一導料斜面12與第三導料斜面14為上高下低之傾斜面，第二導料斜面13為上低下高傾斜面之設計，使工件30受模具本體10之衝擊擠壓時，其係由模具本體10之上緣由上而下受力變形，其可使工件30確實分段受力，以分散模具本體10衝擊時所造成衝擊力過大之缺失，進而可避免工件30之損壞，並可提高工件30所形成鑽尾部31之強度者。 (b) Since the first guide bevel 12 and the third guide bevel 14 of the present invention are inclined surfaces of upper, lower, lower, and lower, the second guide bevel 13 is designed to be upper, lower, and higher, so that the workpiece 30 is subjected to the mold body. When the impact is pressed by 10, it is deformed from the upper edge of the mold body 10 from top to bottom, which can make the workpiece 30 be segmentally stressed, so as to disperse the excessive impact force caused by the impact of the mold body 10, and then Damage to the workpiece 30 can be avoided, and the strength of the drill tail portion 31 formed by the workpiece 30 can be increased.
(三)又，藉由模具本體10之第一導料斜面12與第二導料斜面13具有一段落差，且第一導料斜面12與第三導料斜面14為上高下低之傾斜面，第二導料斜面13為上低下高傾斜面之設計，當二模具本體10衝擊靠合時，該二模具本體10係與工件30先接觸衝擊，而使二模具本體10並未直接衝擊碰撞；因此，其可有效避免模具本體10撞擊爆模而損壞，提高模具本體10之使用年限，進而可降低製造成本者。 (3) Further, the first guide bevel 12 and the second guide bevel 13 of the mold body 10 have a step difference, and the first guide bevel 12 and the third guide bevel 14 are upper, lower and lower inclined faces. The second guide bevel 13 is designed for the upper, lower, and lower inclined surfaces. When the two mold bodies 10 are impacted, the two mold bodies 10 are in contact with the workpiece 30 first, and the two mold bodies 10 are not directly impacted. Therefore, it can effectively prevent the mold body 10 from being damaged by the impact of the explosion mold, and improve the service life of the mold body 10, thereby reducing the manufacturing cost.
(四)再，由於本發明之模具本體10係利用第一導料斜面 12與第二導料斜面13具有一段落差，且第一導料斜面12與第三導料斜面14為上高下低之傾斜面，第二導料斜面13為上低下高傾斜面之設計，使工件30形成分段逐漸受衝擊擠壓，其作用時間並未加長或減少改變，因此不致因作用時間變長而增加製造成本，亦不因作用時間短而使應力變大，實可提高製造作業之流程簡便性與提高鑽尾螺絲之品質者。 (4) Further, since the mold body 10 of the present invention utilizes the first guide bevel 12 has a step difference with the second guiding bevel 13 , and the first guiding bevel 12 and the third guiding bevel 14 are upper and lower inclined faces, and the second guiding bevel 13 is upper and lower high inclined faces. The workpiece 30 is formed into a segment and is gradually pressed by the impact, and the action time is not lengthened or reduced. Therefore, the manufacturing cost is not increased due to the long acting time, and the stress is increased due to the short acting time, which can improve the manufacturing. The simplicity of the operation and the improvement of the quality of the self-drilling screws.
(五)另，當工件30利用本發明之模具本體10並依據成型模穴20之形狀形成鑽尾部31時，由於其製造時係為分段逐漸受力變形，其不致因衝擊力過大且直接與工件30接觸，進而可減少工件30之鑽尾部31應變變形，且可降低鑽尾部31應力集中之情事，使工件30之鑽尾部31具有較佳之強度及穩定性，進而可提高鑽尾螺絲之強度及穩定性。 (5) In addition, when the workpiece 30 is formed by the mold body 10 of the present invention and the drill tail portion 31 is formed according to the shape of the molding cavity 20, since it is gradually deformed by force when it is manufactured, it is not excessively affected by the impact force and directly Contact with the workpiece 30, thereby reducing the strain deformation of the drill tail portion 31 of the workpiece 30, and reducing the stress concentration of the drill tail portion 31, so that the drill tail portion 31 of the workpiece 30 has better strength and stability, thereby improving the drilling screw. Strength and stability.
(六)再，由於本發明之第一導料斜面12與第三導料斜面14為上高下低之傾斜面，第二導料斜面13為上低下高傾斜面之設計，當工件30衝擊成型鑽尾部31時，該工件30會略為上移並偏轉，使工件30之鑽尾部31因工件30上移而可逐步受力成型，且其排屑面會因工件30略為偏轉而概呈螺旋狀(如第8、9圖所示)，使可提高切削時之排屑速度，進而可提高鑽尾螺絲之切削速度者。 (6) Further, since the first guide bevel 12 and the third guide bevel 14 of the present invention are inclined surfaces of upper, lower and lower, the second guide bevel 13 is designed for upper and lower high inclined surfaces, when the workpiece 30 is impacted. When the tail portion 31 is formed, the workpiece 30 is slightly moved up and deflected, so that the drill tail portion 31 of the workpiece 30 can be gradually formed by the workpiece 30 moving upward, and the chip discharge surface is spiraled due to the slight deflection of the workpiece 30. The shape (as shown in Figures 8 and 9) makes it possible to increase the chip removal speed during cutting and to increase the cutting speed of the self-drilling screw.
故，由上述之優點可知，本發明確具有顯著之新穎性與進步性，且其確為未曾有過，誠已符合發明專利要件，爰依法提出專利申請，並祈賜專利為禱，至感德便。 Therefore, it can be seen from the above advantages that the present invention has significant novelty and progress, and it is indeed unprecedented. Cheng has already met the requirements of the invention patent, and has filed a patent application according to law, and prayed for a patent for prayer. Will.
以上所述，僅為本發明用以說明之可行實施例，因此並不能以其限制本發明之保護範圍，舉凡熟習此技藝者依本發明說明書及申請專利範圍所為之均等變化或修飾，皆應仍屬本發明所涵蓋之保護範圍。 The above descriptions are merely illustrative of the possible embodiments of the present invention, and thus the scope of the present invention should not be construed as limiting the scope of the present invention. It is still within the scope of protection covered by the present invention.
10‧‧‧模具本體 10‧‧‧Mold body
11‧‧‧衝擊面 11‧‧‧ Impact surface
12‧‧‧第一導料斜面 12‧‧‧First guide bevel
13‧‧‧第二導料斜面 13‧‧‧Second guide bevel
14‧‧‧第三導料斜面 14‧‧‧3rd guide bevel
15‧‧‧鑽頭成型面 15‧‧‧Drill forming surface
20‧‧‧成型模穴 20‧‧‧Forming cavity
21‧‧‧弧形面 21‧‧‧ curved surface
22‧‧‧傾斜面 22‧‧‧Sloping surface
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105114546A TWI571335B (en) | 2016-05-11 | 2016-05-11 | Drilling screw forming mold and its products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105114546A TWI571335B (en) | 2016-05-11 | 2016-05-11 | Drilling screw forming mold and its products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI571335B true TWI571335B (en) | 2017-02-21 |
| TW201739540A TW201739540A (en) | 2017-11-16 |
Family
ID=58608320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW105114546A TWI571335B (en) | 2016-05-11 | 2016-05-11 | Drilling screw forming mold and its products |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI571335B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067881A (en) * | 1992-06-25 | 1994-01-18 | Miyagawa Kinzoku Kogyo Kk | Manufacture of drill screw and forming die for the same |
| US5980390A (en) * | 1997-10-17 | 1999-11-09 | Ferrante; Frank | Die for self drilling screws |
| TWM340872U (en) * | 2007-09-18 | 2008-09-21 | Ed Tech Co Ltd | Improved drill-tip screw mold |
| CN201291282Y (en) * | 2008-11-10 | 2009-08-19 | 如翌企业股份有限公司 | Die of drilling tail screw |
| TWM444883U (en) * | 2012-08-09 | 2013-01-11 | Lu Yi Die Works Co Ltd | Stamp forging mould of self-tapping screw upright blade |
| EP2722116A1 (en) * | 2012-10-19 | 2014-04-23 | Adolf Würth GmbH & Co. KG | Method and pressing jaw pair for producing a drill bit |
-
2016
- 2016-05-11 TW TW105114546A patent/TWI571335B/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH067881A (en) * | 1992-06-25 | 1994-01-18 | Miyagawa Kinzoku Kogyo Kk | Manufacture of drill screw and forming die for the same |
| US5980390A (en) * | 1997-10-17 | 1999-11-09 | Ferrante; Frank | Die for self drilling screws |
| TWM340872U (en) * | 2007-09-18 | 2008-09-21 | Ed Tech Co Ltd | Improved drill-tip screw mold |
| CN201291282Y (en) * | 2008-11-10 | 2009-08-19 | 如翌企业股份有限公司 | Die of drilling tail screw |
| TWM444883U (en) * | 2012-08-09 | 2013-01-11 | Lu Yi Die Works Co Ltd | Stamp forging mould of self-tapping screw upright blade |
| EP2722116A1 (en) * | 2012-10-19 | 2014-04-23 | Adolf Würth GmbH & Co. KG | Method and pressing jaw pair for producing a drill bit |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201739540A (en) | 2017-11-16 |
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| MM4A | Annulment or lapse of patent due to non-payment of fees |