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WO2010021443A1 - Method for manufacturing a self-drilling screw - Google Patents

Method for manufacturing a self-drilling screw Download PDF

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Publication number
WO2010021443A1
WO2010021443A1 PCT/KR2009/001023 KR2009001023W WO2010021443A1 WO 2010021443 A1 WO2010021443 A1 WO 2010021443A1 KR 2009001023 W KR2009001023 W KR 2009001023W WO 2010021443 A1 WO2010021443 A1 WO 2010021443A1
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WO
WIPO (PCT)
Prior art keywords
drill blade
rod
forming
groove
spiral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2009/001023
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French (fr)
Korean (ko)
Inventor
박순용
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SAEHAN ELECTRONICS CO
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SAEHAN ELECTRONICS CO
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Filing date
Publication date
Application filed by SAEHAN ELECTRONICS CO filed Critical SAEHAN ELECTRONICS CO
Publication of WO2010021443A1 publication Critical patent/WO2010021443A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/06—Making by means of profiled members other than rolls, e.g. reciprocating flat dies or jaws, moved longitudinally or curvilinearly with respect to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements

Definitions

  • the present invention relates to a method for manufacturing a direct screw, and more particularly, in the manufacture of a direct screw, by forming a spiral on the outer surface of the body and allowing a drill blade to be formed at the end of the body, the production of the direct screw is simple and quick. It relates to a direct screw manufacturing method to be made.
  • a screw is usually used as a means for fixing an object or part to another object or device.
  • the screw has a spiral formed on the outer surface of the body, so that the helix penetrates the body of the object to be fixed, the object or part is fixed, the ordinary screw is to fix the object or part to another object or device.
  • the end of the body directly tightens the fixing object, tightening is performed, which requires considerable force in the tightening process and damage to the joining part. It is increasing.
  • the direct screw is provided with a drill blade at the tip of the body, so that the spiral of the body penetrates the body of the fixed object while the drill bit drills the body of the fixed object. In addition, it is possible to prevent damage to the screw coupling portion.
  • the conventional method for manufacturing a direct screw the head portion 110 after forming the head portion 110 having a tool insertion groove 112 in one end of the rod-shaped wire 110 as shown in FIG.
  • the other end of the bar-shaped wire (100) is inserted into the mold 50, the drill blade forming groove 51 is formed to face the end of the rod-shaped wire 100 inserted into the drill blade forming groove 51 of the mold 50
  • the rod-shaped wire (100) having a drill blade 114 formed by the above process is pushed and rolled between the rolling die and the rod-shaped wire
  • the spiral 113 was formed at 100.
  • the present invention has been made in view of the above circumstances, in the manufacture of a direct screw, by forming a spiral on the outer surface of the body and at the same time the drill blades can be formed on the body end, the production of the direct screw is made easily and quickly
  • the purpose is to provide a direct screw manufacturing method that allows.
  • Head portion that forms a tapered behind the bar wire by hitting the bar wire behind the first punch having a circular cross section in a state where the rod wire is inserted into the forming groove of the main die having a forming groove formed at the rear.
  • the head portion of the rod-shaped wire having the tool inserting groove formed in the head portion is pushed and rolled between the rolling dies in the form of a plate provided with a drill blade forming portion having a drill blade forming groove to spiral the rod-shaped wire. And a spiral and a drill blade forming step of simultaneously forming a drill blade.
  • a rod-shaped wire having a head portion having a tool inserting groove formed in a spiral and a drill blade forming step is pushed and rolled between a rolling die of a plate shape provided with a drill blade forming groove to a rod-type wire. It is to form a spiral and a drill blade at the same time, it is possible to shorten the time required to manufacture the direct screw to increase the productivity of the product, and to reduce the cost burden because it is unnecessary to manufacture the mold for forming the drill blade It will be possible.
  • 1 is a flow chart showing the process of the direct screw manufacturing method according to the present invention.
  • Figure 2 is a schematic diagram for explaining the head portion forming step in the direct screw manufacturing method according to the present invention
  • Figure 3 is a schematic diagram for explaining the spiral and the drill blade forming step in the process of the direct screw manufacturing method according to the present invention
  • Figure 4 is a perspective view showing the shape of the rolling die used in the spiral and drill blade forming step in the method for manufacturing a direct screw according to the present invention
  • Figure 5 is a schematic diagram for explaining the process of forming a drill blade on the front end of the conventional direct screw manufacturing method
  • FIG. 1 is a flow chart showing the process of the direct screw manufacturing method according to the present invention
  • Figure 2 is a schematic diagram for explaining the head portion forming step in the direct screw manufacturing method according to the present invention
  • Figure 3 is a direct screw according to the present invention
  • Figure 4 is a schematic view for explaining the spiral and drill blade forming step in the process of the manufacturing method
  • Figure 4 is a perspective view showing the shape of the rolling die used in the spiral and drill blade forming step in the direct screw manufacturing method according to the present invention.
  • the method for manufacturing a direct screw according to the present invention includes a head part forming step S1 and a spiral and a drill blade forming step S2.
  • a rod-shaped wire 100 is introduced into a forming groove of a main die 10 having a forming groove 11 having a taper 11 a formed at a rear side thereof.
  • the head portion 110 forming the taper 111 is formed on the rear of the bar-shaped wire 100, and then the driver bit shape.
  • the second punch 30 having the protruding portion 31 is formed to hit the back of the head portion 110 to form the tool insertion groove 112 in the head portion 110 of the rod-shaped wire 100.
  • the rod-shaped wire 100 introduced into the forming grooves 11 of the main die 10 in the head forming step S1 is preferably of a certain length made of steel, and molding of the main die 10.
  • the first and second punches 20 and 30 hitting the rod-shaped wires in the groove 11 may be capable of moving forward, backward, ascending and descending, and may be formed in the forming groove 11 of the main die 10.
  • the second punch 30 hitting the rear of the head 110 of the inserted bar wire 100 may be in the form of a tip of another tool such as a hexagon wrench in addition to the shape of the protrusion 31 is a straight or cross-shaped driver bit. Do.
  • the method for discharging the rod-shaped wire 100 is formed outside the forming groove of the main die 10 may be made by any conventional method, so the detailed description is omitted.
  • the spiral and drill blade forming step (S2) is the head portion of the rod-shaped wire 100, the tool insertion groove 112 is formed in the head portion 110 through the head portion forming step (S1) as shown in FIG.
  • the tool insertion groove 112 is inserted into the head portion 110 by pushing and rolling the lower portion between the rolling die 40 having a plate shape provided with the drill blade forming portion 41 having the drill blade forming groove 41a.
  • the spiral wire 113 and the drill blade 114 are formed at the same time on the formed rod-shaped wire 100.
  • the drill blade forming portion 41 of the rolling die 40 is integrally formed under the spiral portion 42 having the spiral groove 42a as shown in FIG. 4. It is preferred that it is provided, but made in a form gradually protruding toward the bottom.
  • the tip of the rod-shaped wire 100 may be pointed downward toward the bottom.
  • the drill blade forming groove 41a of the drill blade forming portion 41 varies the interval and angle depending on the number and angle of formation of the target drill blade 114, the depth of the spiral groove 42a It is preferable to make it lower than depth, and it is preferable that the angle of the drill blade forming groove 41a inclines 25-45 degrees clockwise or counterclockwise from a horizontal state.
  • the width of the drill blade 114 formed at the tip of the rod-shaped wire 100 is formed on the outer surface of the rod-shaped wire 100. Since the spiral 114 becomes narrower than the width of the spiral 114 to be fastened to the fastening object, the spiral 114 can be bitten by the fastening object, and the angle of the drill blade forming groove 41a is clockwise or counterclockwise. As the drill blade 114 formed in the rod-shaped wire 100 has the same angle as the drill blade forming groove 41a by making an inclination of 25-45 °, it is easily drilled without a load in the drilling process when fastening a direct screw. This can be done.
  • the result of the head forming step (S1) that is, a method of mounting the rod-shaped wire 100, the tool insertion groove 112 is formed in the head portion 110 to the rolling die 40, and the rolling die 40 )
  • the method of discharging the result of the molding to be located inside, that is, the rod-shaped wire 100 having the spiral 113 and the drill blade 114 to the outside of the rolling die 40 may be made by any conventional method. The description is omitted.
  • the drill blade 114 can be formed at the tip of the rod-shaped wire 100 at the same time as the spiral 113 is formed, so that the production of the direct connection screw can be made more easily and quickly.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

The present invention relates to a method for manufacturing a self-drilling screw wherein a spire is formed on the outer surface of the main body of the screw and a drill edge is formed at the front end of the main body of the screw at the same time to thereby enable self-drilling screws to be manufactured in a convenient and rapid manner. The method for manufacturing a self-drilling screw of the present invention includes a head forming step (S1) which involves striking the rear portion of a rod-type wire (100), using a first punch (20) having a circular cross-section, in a state where the rod-type wire (100) is inserted into a molding groove (11) formed at a main die (10), and which has a tapered portion (11a) at the rear portion thereof, to form the head (110) with a tapered portion (111) at the rear portion of a rod-type wire (100), and again striking the rear portion of the head (110) using a second punch (30) having a protrusion (31) shaped as a driver bit to form a tool insertion groove (112) at the head (110) of the rod-type wire (100); and a spire and drill edge forming step (S2) which involves pushing and rolling the portion below the head (110) of the rod-type wire (100) the head (110) of which has the tool insertion groove (112), in the space between plate-type rolling dies (40) having drill edge forming portions (41) with drill edge forming grooves (41a), to form a spire (113) and a drill edge (114) simultaneously on the rod-type wire (100).

Description

직결나사 제조방법Direct screw manufacturing method

본 발명은 직결나사 제조방법에 관한 것으로, 더욱 상세하게는 직결나사를 제조함에 있어 몸체 외면에 나선을 형성함과 동시에 몸체 선단에 드릴날이 형성될 수 있도록 함으로써 직결나사의 제조가 간편하고 신속하게 이루어질 수 있도록 하는 직결나사 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a direct screw, and more particularly, in the manufacture of a direct screw, by forming a spiral on the outer surface of the body and allowing a drill blade to be formed at the end of the body, the production of the direct screw is simple and quick. It relates to a direct screw manufacturing method to be made.

사물이나 부품을 다른 사물이나 장치에 고정하기 위한 수단으로 통상 나사를 사용하게 된다. A screw is usually used as a means for fixing an object or part to another object or device.

이때, 나사는 몸체 외면에 나선이 형성되어 있어 나선이 고정대상물의 몸체를 파고들면서 사물이나 부품의 고정이 이루어지게 되는데, 보통의 나사는 사물이나 부품을 다른 사물이나 장치에 고정할 수 있도록 하는 것이기는 하나 몸체 선단이 고정 대상물을 직접 파고들며 조임이 이루어지는 것이어서 조임 과정에서 상당한 힘이 소요될 뿐만 아니라 결합부에 훼손이 뒤따르는 문제가 있었던 바, 최근에는 몸체 선단에 드릴날이 형성된 직결나사의 사용이 늘고 있다. At this time, the screw has a spiral formed on the outer surface of the body, so that the helix penetrates the body of the object to be fixed, the object or part is fixed, the ordinary screw is to fix the object or part to another object or device. However, since the end of the body directly tightens the fixing object, tightening is performed, which requires considerable force in the tightening process and damage to the joining part. It is increasing.

직결나사는 몸체 선단에 드릴날이 마련되어 드릴날이 고정대상물의 몸체를 천공하는 상태에서 몸체의 나선이 고정대상물의 몸체를 파고들게 되는바, 나선만이 형성된 보통의 나사에 비해 조임이 수월할 뿐만 아니라 나사 결합부의 훼손을 방지할 수 있게 된다. The direct screw is provided with a drill blade at the tip of the body, so that the spiral of the body penetrates the body of the fixed object while the drill bit drills the body of the fixed object. In addition, it is possible to prevent damage to the screw coupling portion.

한편, 직결나사를 제조하기 위한 기존의 방법은, 도 5에 도시된 바와 같이 막대형와이어(110) 일단에 공구삽입홈(112)을 갖는 헤드부(110)를 형성한 이후 헤드부(110)와 대향되는 막대형와이어(100) 타단을 드릴날성형홈(51)이 형성된 형틀(50)에 투입하여 형틀(50)의 드릴날성형홈(51)에 투입된 막대형와이어(100) 선단을 압착함으로써 막대형와이어(100) 선단에 드릴날(114)을 형성하는 것이었고, 상기의 공정에 의해 드릴날(114)이 형성된 막대형와이어(100)를 롤링다이 사이에 두고 밀어붙여 굴려서 막대형와이어(100)에 나선(113)을 형성하는 것이었다. On the other hand, the conventional method for manufacturing a direct screw, the head portion 110 after forming the head portion 110 having a tool insertion groove 112 in one end of the rod-shaped wire 110 as shown in FIG. The other end of the bar-shaped wire (100) is inserted into the mold 50, the drill blade forming groove 51 is formed to face the end of the rod-shaped wire 100 inserted into the drill blade forming groove 51 of the mold 50 This was to form a drill blade 114 at the tip of the rod-shaped wire 100, the rod-shaped wire (100) having a drill blade 114 formed by the above process is pushed and rolled between the rolling die and the rod-shaped wire The spiral 113 was formed at 100.

상기와 같은 기존의 직결나사 제조방법은, 막대형와이어(100) 선단에 드릴날(114)이 형성된 직결나사를 제조할 수 있도록 하는 것이었으나, 막대형와이어(100) 선단에 드릴날(114)을 형성하는 공정과 막대형와이어(100)의 외면에 나선(113)을 형성하는 공정이 별도로 진행되는 것이었던 바, 직결나사 제조에 소요되는 시간이 길어지게 되어 생산성이 떨어지게 되는 문제가 있었고, 드릴날성형홈(51)이 형성된 형틀(50) 마련에 별도의 시간 및 비용이 소요되는 문제가 있었다. Conventional direct screw manufacturing method as described above, but was to be able to manufacture a direct screw with a drill blade 114 formed on the tip of the rod-shaped wire 100, the drill blade 114 to the tip of the rod-shaped wire (100) The process of forming the bar and the process of forming the spiral 113 on the outer surface of the rod-shaped wire 100 was to be carried out separately, there was a problem that the time required for the manufacture of the direct screw is lengthened and productivity is reduced, the drill There was a problem in that it takes a separate time and cost to prepare the mold 50, the blade forming groove 51 is formed.

본 발명은 상기와 같은 실정을 감안하여 안출한 것으로, 직결나사를 제조함에 있어 몸체 외면에 나선을 형성함과 동시에 몸체 선단에 드릴날이 형성될 수 있도록 함으로써 직결나사의 제조가 간편하고 신속하게 이루어질 수 있도록 하는 직결나사 제조방법을 제공하는데 그 목적이 있는 것이다.The present invention has been made in view of the above circumstances, in the manufacture of a direct screw, by forming a spiral on the outer surface of the body and at the same time the drill blades can be formed on the body end, the production of the direct screw is made easily and quickly The purpose is to provide a direct screw manufacturing method that allows.

상기의 목적을 달성하기 위한 본 발명에 의한 직결나사 제조방법은, Direct screw manufacturing method according to the present invention for achieving the above object,

후방에 테이퍼가 형성된 성형홈을 갖는 메인다이의 성형홈 내부에 막대형와이어를 투입한 상태에서 단면형태가 원형인 제1펀치로써 막대형와이어 후방을 타격하여 막대형와이어 후방에 테이퍼를 이루는 헤드부를 형성한 후 드라이버 비트 형태로 된 돌출부를 갖는 제2펀치로써 헤드부 후방을 재차 타격하여 막대형와이어의 헤드부에 공구삽입홈을 형성하는 헤드부 형성단계와; Head portion that forms a tapered behind the bar wire by hitting the bar wire behind the first punch having a circular cross section in a state where the rod wire is inserted into the forming groove of the main die having a forming groove formed at the rear. A head portion forming step of forming a tool insertion groove in the head portion of the rod-shaped wire by hitting the back of the head portion again with a second punch having a protrusion formed in the form of a driver bit after forming;

상기 헤드부 성형단계 이후 헤드부에 공구삽입홈이 형성된 막대형와이어의 헤드부 이하 부위를 드릴날형성홈을 갖는 드릴날형성부가 마련된 판 형태의 롤링다이 사이에 두고 밀어붙여 굴려서 막대형와이어에 나선과 드릴날을 동시에 형성하는 나선 및 드릴날 형성단계로 이루어지는 것을 특징으로 하는 것이다.  After the head forming step, the head portion of the rod-shaped wire having the tool inserting groove formed in the head portion is pushed and rolled between the rolling dies in the form of a plate provided with a drill blade forming portion having a drill blade forming groove to spiral the rod-shaped wire. And a spiral and a drill blade forming step of simultaneously forming a drill blade.

본 발명에 의한 직결나사 제조방법은, 나선 및 드릴날 형성단계에서 공구삽입홈이 형성된 헤드부를 갖는 막대형와이어를 드릴날형성홈이 마련된 판 형태의 롤링다이 사이에 두고 밀어붙여 굴려서 막대형와이어에 나선과 드릴날을 동시에 형성하는 것인 바, 직결나사 제조에 소요되는 시간을 단축할 수 있게 되므로 제품 생산성을 높일 수 있게 되는 것이고, 드릴날 성형을 위한 형틀 제작이 불필요하게 되므로 비용상의 부담을 덜 수 있게 되는 것이다.In the method for manufacturing a direct screw according to the present invention, a rod-shaped wire having a head portion having a tool inserting groove formed in a spiral and a drill blade forming step is pushed and rolled between a rolling die of a plate shape provided with a drill blade forming groove to a rod-type wire. It is to form a spiral and a drill blade at the same time, it is possible to shorten the time required to manufacture the direct screw to increase the productivity of the product, and to reduce the cost burden because it is unnecessary to manufacture the mold for forming the drill blade It will be possible.

도 1은 본 발명에 의한 직결나사 제조방법의 공정을 보인 순서도 1 is a flow chart showing the process of the direct screw manufacturing method according to the present invention.

도 2는 본 발명에 의한 직결나사 제조방법에서 헤드부 형성단계를 설명하기 위한 개략도 Figure 2 is a schematic diagram for explaining the head portion forming step in the direct screw manufacturing method according to the present invention

도 3은 본 발명에 의한 직결나사 제조방법의 공정에서 나선 및 드릴날 형성단계를 설명하기 위한 개략도 Figure 3 is a schematic diagram for explaining the spiral and the drill blade forming step in the process of the direct screw manufacturing method according to the present invention

도 4는 본 발명에 의한 직결나사 제조방법에서 나선 및 드릴날 형성단계에 사용되는 롤링다이의 형태를 보인 사시도 Figure 4 is a perspective view showing the shape of the rolling die used in the spiral and drill blade forming step in the method for manufacturing a direct screw according to the present invention

도 5는 기존 직결나사 제조방법에서 몸체 선단에 드릴날을 형성하는 공정을 설명하기 위한 개략도 Figure 5 is a schematic diagram for explaining the process of forming a drill blade on the front end of the conventional direct screw manufacturing method

<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>

10 : 메인다이 11 : 성형홈10: main die 11: molding groove

11a : 테이퍼 20 : 제1펀치11a: Taper 20: First Punch

30 : 제2펀치 31 : 돌출부30: second punch 31: protrusion

40 : 롤링다이 41 : 드릴날형성부40: rolling die 41: drill blade forming portion

41a : 드릴날형성홈 42 : 나선형성부41a: Drilling edge forming groove 42: Spiral part

42a : 나선형성홈 50 : 형틀42a: spiral groove 50: mold

51 : 드릴날성형홈 100 : 막대형와이어51: drill blade forming groove 100: bar wire

110 : 헤드부 111 : 테이퍼110: head portion 111: taper

112 : 공구삽입홈 113 : 나선112: tool insertion groove 113: spiral

114 : 드릴날 S1 : 헤드부 형성단계114: drill blade S1: head forming step

S2 : 나선 및 드릴날 형성단계S2: spiral and drill blade forming step

이하, 첨부 도면에 의거하여 더욱 상세히 설명하면 다음과 같다. Hereinafter, with reference to the accompanying drawings in more detail as follows.

도 1은 본 발명에 의한 직결나사 제조방법의 공정을 보인 순서도이고, 도 2는 본 발명에 의한 직결나사 제조방법에서 헤드부 형성단계를 설명하기 위한 개략도이며, 도 3은 본 발명에 의한 직결나사 제조방법의 공정에서 나선 및 드릴날 형성단계를 설명하기 위한 개략도이며, 도 4는 본 발명에 의한 직결나사 제조방법에서 나선 및 드릴날 형성단계에 사용되는 롤링다이의 형태를 보인 사시도이다. 1 is a flow chart showing the process of the direct screw manufacturing method according to the present invention, Figure 2 is a schematic diagram for explaining the head portion forming step in the direct screw manufacturing method according to the present invention, Figure 3 is a direct screw according to the present invention Figure 4 is a schematic view for explaining the spiral and drill blade forming step in the process of the manufacturing method, Figure 4 is a perspective view showing the shape of the rolling die used in the spiral and drill blade forming step in the direct screw manufacturing method according to the present invention.

도 1에 도시된 바와 같이 본 발명에 의한 직결나사 제조방법은 헤드부 형성단계(S1)와, 나선 및 드릴날 형성단계(S2)로 이루어진다. As shown in FIG. 1, the method for manufacturing a direct screw according to the present invention includes a head part forming step S1 and a spiral and a drill blade forming step S2.

상기 헤드부 형성단계(S1)는 도 2에 도시된 바와 같이 후방에 테이퍼(11a)가 형성된 성형홈(11)을 갖는 메인다이(10)의 성형홈 내부에 막대형와이어(100)를 투입한 상태에서 단면형태가 원형인 제1펀치(20)로써 막대형와이어(100) 후방을 타격하여 막대형와이어(100) 후방에 테이퍼(111)를 이루는 헤드부(110)를 형성한 후 드라이버 비트 형태로 된 돌출부(31)를 갖는 제2펀치(30)로써 헤드부(110) 후방을 재차 타격하여 막대형와이어(100)의 헤드부(110)에 공구삽입홈(112)을 형성하는 것이다. In the head forming step S1, as shown in FIG. 2, a rod-shaped wire 100 is introduced into a forming groove of a main die 10 having a forming groove 11 having a taper 11 a formed at a rear side thereof. After hitting the rear of the bar-shaped wire 100 with the first punch 20 having a circular cross-sectional shape in the state, the head portion 110 forming the taper 111 is formed on the rear of the bar-shaped wire 100, and then the driver bit shape. The second punch 30 having the protruding portion 31 is formed to hit the back of the head portion 110 to form the tool insertion groove 112 in the head portion 110 of the rod-shaped wire 100.

이와 같은 헤드부 형성단계(S1)에서 메인다이(10)의 성형홈(11) 내부로 투입되는 막대형와이어(100)는 스틸로 된 일정한 길이의 것임이 바람직하고, 메인다이(10)의 성형홈(11) 내부의 막대형와이어를 타격하는 제1,2펀치(20, 30)는 전,후진 및 승,하강이 가능한 것임이 바람직하며, 메인다이(10)의 성형홈(11) 내부에 투입된 막대형와이어(100)의 헤드부(110) 후방을 타격하는 제2펀치(30)는 돌출부(31) 형태가 일자형 또는 십자형의 드라이버 비트 형태 외에 육각 렌치 등의 타 공구의 선단 형태로 되어도 무방하다.The rod-shaped wire 100 introduced into the forming grooves 11 of the main die 10 in the head forming step S1 is preferably of a certain length made of steel, and molding of the main die 10. The first and second punches 20 and 30 hitting the rod-shaped wires in the groove 11 may be capable of moving forward, backward, ascending and descending, and may be formed in the forming groove 11 of the main die 10. The second punch 30 hitting the rear of the head 110 of the inserted bar wire 100 may be in the form of a tip of another tool such as a hexagon wrench in addition to the shape of the protrusion 31 is a straight or cross-shaped driver bit. Do.

한편, 막대형와이어(100)를 메인다이(10)의 성형홈(11) 내부에 장착하는 방법과 메인다이(10)의 성형홈(11) 내부에 위치하는 성형 결과물 즉, 헤드부(110)가 형성된 막대형와이어(100)를 메인다이(10)의 성형홈 외부로 배출하는 방법은 통상의 어떠한 방법으로 이루어져도 무방하므로 상세한 설명은 생략하는 바이다. Meanwhile, a method of mounting the rod-shaped wire 100 in the molding groove 11 of the main die 10 and the molding result positioned in the molding groove 11 of the main die 10, that is, the head part 110. The method for discharging the rod-shaped wire 100 is formed outside the forming groove of the main die 10 may be made by any conventional method, so the detailed description is omitted.

상기 나선 및 드릴날 형성단계(S2)는 도 3에 도시된 바와 같이 헤드부 형성단계(S1)를 통해 헤드부(110)에 공구삽입홈(112)이 형성된 막대형와이어(100)의 헤드부(110) 이하 부위를 드릴날형성홈(41a)을 갖는 드릴날형성부(41)가 마련된 판 형태의 롤링다이(40) 사이에 두고 밀어붙여 굴려서 헤드부(110)에 공구삽입홈(112)이 형성된 막대형와이어(100)에 나선(113)과 드릴날(114)을 동시에 형성하는 것이다. The spiral and drill blade forming step (S2) is the head portion of the rod-shaped wire 100, the tool insertion groove 112 is formed in the head portion 110 through the head portion forming step (S1) as shown in FIG. The tool insertion groove 112 is inserted into the head portion 110 by pushing and rolling the lower portion between the rolling die 40 having a plate shape provided with the drill blade forming portion 41 having the drill blade forming groove 41a. The spiral wire 113 and the drill blade 114 are formed at the same time on the formed rod-shaped wire 100.

이와 같은 나선 및 드릴날 형성단계(S2)에서 롤링다이(40)의 드릴날형성부(41)는 도 4에 도시된 바와 같이 나선형성홈(42a)을 갖는 나선형성부(42) 하측에 일체로 마련되는 것이되 하단으로 향하면서 점차로 돌출된 형태로 이루어지는 것이 바람직하다. In this spiral and drill blade forming step (S2), the drill blade forming portion 41 of the rolling die 40 is integrally formed under the spiral portion 42 having the spiral groove 42a as shown in FIG. 4. It is preferred that it is provided, but made in a form gradually protruding toward the bottom.

롤링다이(40)의 드릴날형성부(41)가 하단으로 향하면서 점차로 돌출되는 형태로 이루어짐으로써 막대형와이어(100) 선단부가 하부로 향하면서 뾰족한 형태가 될 수 있게 된다. Since the drill blade forming portion 41 of the rolling die 40 is formed to protrude gradually toward the lower end, the tip of the rod-shaped wire 100 may be pointed downward toward the bottom.

이때, 드릴날형성부(41)의 드릴날형성홈(41a)은 목표하는 드릴날(114)의 형성개수와 각도에 따라 그 간격 및 각도를 달리하되, 그 깊이는 나선형성홈(42a)의 깊이보다 낮게 이루어지는 것이 바람직하고, 드릴날형성홈(41a)의 각도는 수평상태로부터 시계방향 또는 반시계방향으로 25-45° 경사를 이루는 것이 바람직하다. At this time, the drill blade forming groove 41a of the drill blade forming portion 41 varies the interval and angle depending on the number and angle of formation of the target drill blade 114, the depth of the spiral groove 42a It is preferable to make it lower than depth, and it is preferable that the angle of the drill blade forming groove 41a inclines 25-45 degrees clockwise or counterclockwise from a horizontal state.

드릴날형성홈(41a)의 깊이가 나선형성홈(42a)의 깊이에 비해 낮게 이루어짐으로써 막대형와이어(100) 선단에 형성되는 드릴날(114)의 폭이 막대형와이어(100) 외면에 형성되는 나선(114)의 폭에 비해 좁아지게 되므로 직결나사가 체결 대상물에 체결될 때 나선(114)이 체결 대상물에 물릴 수 있게 되고, 드릴날형성홈(41a)의 각도가 시계방향 또는 반시계방향으로 25-45° 경사를 이룸으로써 막대형와이어(100)에 형성되는 드릴날(114)은 드릴날형성홈(41a)과 동일 각도를 갖게 되므로 직결나사 체결시 천공 과정에서 비교적 부하 없이 수월하게 천공이 이루어질 수 있게 된다.  Since the depth of the drill blade forming groove 41a is made lower than the depth of the spiral groove 42a, the width of the drill blade 114 formed at the tip of the rod-shaped wire 100 is formed on the outer surface of the rod-shaped wire 100. Since the spiral 114 becomes narrower than the width of the spiral 114 to be fastened to the fastening object, the spiral 114 can be bitten by the fastening object, and the angle of the drill blade forming groove 41a is clockwise or counterclockwise. As the drill blade 114 formed in the rod-shaped wire 100 has the same angle as the drill blade forming groove 41a by making an inclination of 25-45 °, it is easily drilled without a load in the drilling process when fastening a direct screw. This can be done.

한편, 헤드부 형성단계(S1)에 의한 결과물 즉, 헤드부(110)에 공구삽입홈(112)이 형성된 막대형와이어(100)를 롤링다이(40)에 장착하는 방법과, 롤링다이(40) 내측에 위치하게 되는 성형 결과물 즉, 나선(113) 및 드릴날(114)이 형성된 막대형와이어(100)를 롤링다이(40) 외부로 배출하는 방법은 통상의 어떠한 방법으로 이루어져도 무방하므로 상세한 설명은 생략하는 바이다. On the other hand, the result of the head forming step (S1), that is, a method of mounting the rod-shaped wire 100, the tool insertion groove 112 is formed in the head portion 110 to the rolling die 40, and the rolling die 40 ), The method of discharging the result of the molding to be located inside, that is, the rod-shaped wire 100 having the spiral 113 and the drill blade 114 to the outside of the rolling die 40 may be made by any conventional method. The description is omitted.

본 발명에 의한 직결나사 제조방법을 따르는 경우 드릴날성형홈(51)이 형성된 형틀(50)로써 막대형와이어(100) 선단에 드릴날(114)을 형성하는 공정 없이 막대형와이어(100) 외면에 나선(113)을 형성하는 과정에서 나선(113) 형성과 동시에 막대형와이어(100) 선단에 드릴날(114)이 형성될 수 있게 되므로 직결나사의 제조가 보다 간편하고 신속하게 이루어질 수 있게 된다. In the case of the direct screw manufacturing method according to the present invention, the outer surface of the rod-type wire 100 without the process of forming the drill blade 114 at the tip of the rod-type wire 100 as the die 50 in which the drill blade forming groove 51 is formed. In the process of forming the spiral 113, the drill blade 114 can be formed at the tip of the rod-shaped wire 100 at the same time as the spiral 113 is formed, so that the production of the direct connection screw can be made more easily and quickly. .

이상에서 설명한 바와 같은 본 발명은 상기한 실시예에 한정되지 아니하므로 청구범위에서 청구하는 본 발명의 요지를 벗어나지 않는 범위 안에서 변경 가능한 것이며, 그와 같은 변경은 기재된 청구범위 내에 있게 된다. Since the present invention as described above is not limited to the above-described embodiments, it can be changed within the scope not departing from the gist of the present invention claimed in the claims, such changes are within the claims described.

Claims (3)

후방에 테이퍼가 형성된 성형홈을 갖는 메인다이의 성형홈 내부에 막대형와이어를 투입한 상태에서 단면형태가 원형인 제1펀치로써 막대형와이어 후방을 타격하여 막대형와이어 후방에 테이퍼를 이루는 헤드부를 형성한 후 드라이버 비트 형태로 된 돌출부를 갖는 제2펀치로써 헤드부 후방을 재차 타격하여 막대형와이어의 헤드부에 공구삽입홈을 형성하는 헤드부 형성단계와; Head portion that forms a tapered behind the bar wire by hitting the bar wire behind the first punch having a circular cross section in a state where the rod wire is inserted into the forming groove of the main die having a forming groove formed at the rear. A head portion forming step of forming a tool insertion groove in the head portion of the rod-shaped wire by hitting the back of the head portion again with a second punch having a protrusion formed in the form of a driver bit after forming; 상기 헤드부 성형단계 이후 헤드부에 공구삽입홈이 형성된 막대형와이어의 헤드부 이하 부위를 드릴날형성홈을 갖는 드릴날형성부가 마련된 판 형태의 롤링다이 사이에 두고 밀어붙여 굴려서 막대형와이어에 나선과 드릴날을 동시에 형성하는 나선 및 드릴날 형성단계로 이루어지는 것을 특징으로 하는 것이다. After the head forming step, the head portion of the rod-shaped wire having the tool inserting groove formed in the head portion is pushed and rolled between the rolling dies in the form of a plate provided with a drill blade forming portion having a drill blade forming groove to spiral the rod-shaped wire. And a spiral and a drill blade forming step of simultaneously forming a drill blade. 제1항에 있어서, The method of claim 1, 상기 나선 및 드릴날 형성단계의 롤링다이 드릴날형성부는 하단으로 향하면서 점차로 돌출되는 것이고, 드릴날형성부의 드릴날형성홈은 목표하는 드릴날의 형성개수와 각도에 따라 그 간격 및 각도를 달리하되 그 깊이가 롤링다이의 나선형성홈의 깊이에 비해 낮게 이루어지는 것을 특징으로 하는 직결나사 제조방법.The rolling die drill blade forming portion of the spiral and the drill blade forming step is to protrude gradually toward the bottom, the drill blade forming groove of the drill blade forming portion is different from the interval and angle depending on the number and angle of the target drill blade is formed; The depth of the rolling screw manufacturing method, characterized in that the depth is made lower than the depth of the spiral groove of the rolling die. 제1항 또는 제2항에 있어서, The method according to claim 1 or 2, 상기 나선 및 드릴날 형성단계에서 롤링다이의 드릴날형성홈 각도는 수평상태로부터 시계방향 또는 반시계방향으로 25-45°경사를 이루는 것을 특징으로 하는 직결나사 제조방법.In the spiral and drill blade forming step, the drill blade forming groove angle of the rolling die is inclined 25-45 ° clockwise or counterclockwise from the horizontal state.
PCT/KR2009/001023 2008-08-22 2009-03-03 Method for manufacturing a self-drilling screw Ceased WO2010021443A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116851611A (en) * 2023-06-29 2023-10-10 内德史罗夫紧固件（昆山）有限公司 Self-drilling screw forming process and mold with specific tail shape

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KR970005445B1 (en) * 1991-03-29 1997-04-16 닛뽄 고오깐 가부시끼가이샤 Weldable Black Steel Sheet
KR20040062818A (en) * 2003-01-03 2004-07-09 주식회사 대우화스너 a manufacturing method of a bolt for the brake lining
JP2005103637A (en) * 2003-09-26 2005-04-21 Sakamura Mach Co Ltd Heading method for a plurality of members containing washers

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KR970005445B1 (en) * 1991-03-29 1997-04-16 닛뽄 고오깐 가부시끼가이샤 Weldable Black Steel Sheet
JPH05192736A (en) * 1991-06-28 1993-08-03 Kawasaki Steel Corp Manufacture of hexagon socket head cap screw
KR20040062818A (en) * 2003-01-03 2004-07-09 주식회사 대우화스너 a manufacturing method of a bolt for the brake lining
JP2005103637A (en) * 2003-09-26 2005-04-21 Sakamura Mach Co Ltd Heading method for a plurality of members containing washers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116851611A (en) * 2023-06-29 2023-10-10 内德史罗夫紧固件（昆山）有限公司 Self-drilling screw forming process and mold with specific tail shape

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