KR20020043511A - Manufacturing method of nipple - Google Patents

Manufacturing method of nipple Download PDF

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Publication number
KR20020043511A
KR20020043511A KR1020020025844A KR20020025844A KR20020043511A KR 20020043511 A KR20020043511 A KR 20020043511A KR 1020020025844 A KR1020020025844 A KR 1020020025844A KR 20020025844 A KR20020025844 A KR 20020025844A KR 20020043511 A KR20020043511 A KR 20020043511A
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KR
South Korea
Prior art keywords
nipple
nut
inner diameter
rod
cutting
Prior art date
Application number
KR1020020025844A
Other languages
Korean (ko)
Inventor
이정상
Original Assignee
주식회사 세광하이테크
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Publication date
Application filed by 주식회사 세광하이테크 filed Critical 주식회사 세광하이테크
Priority to KR1020020025844A priority Critical patent/KR20020043511A/en
Publication of KR20020043511A publication Critical patent/KR20020043511A/en

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Classifications

    • 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
    • B21K1/14—Making machine elements fittings
    • B21K1/16—Making machine elements fittings parts of pipe or hose couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • 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
    • B21K1/64—Making machine elements nuts
    • 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
    • B21K25/00—Uniting components to form integral members, e.g. turbine wheels and shafts, caulks with inserts, with or without shaping of the components

Abstract

PURPOSE: A nipple manufacturing method is provided to reduce the time of producing a nipple by cutting a hexagonal rod to conform to the dimensions of a body or a nut of the nipple, forming an inner diameter portion by forging the cut rod, then machining threads at the inner or outer circumferential surfaces of such formed rod. CONSTITUTION: A nipple includes a body and a nut. The body is produced by cutting a hexagonal rod of metal material to conform to the dimension of the body, forming an inner diameter portion by forging the cut rod, machining threads at both outer circumferential ends of the formed rod, and chamfering an intermediate projecting portion of the machined rod. The nut is produced by cutting a hexagonal rod of metal material to conform to the dimension of the nut, forming an inner diameter by forging the cut rod, machining threads in the inner diameter portion of the formed rod.

Description

닛플의 제조방법{Manufacturing method of nipple}Manufacturing method of nipple {Manufacturing method of nipple}

본 발명은 닛플의 제조방법에 관한 것으로, 보다 상세하게는 육각봉을 바디와 너트의 크기에 맞게 절단한 후 단조가공하여 내경을 형성하고, 그 외주면이나 내주면에 나사를 절삭함으로써, 단부의 모따기 가공과 내경 절삭가공이 생략되어 제품 생산시간이 대폭 감소되도록 한 닛플의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a nipple, and more particularly, by cutting the hexagon bar to the size of the body and nut, forging to form the inner diameter, by cutting the screw on the outer peripheral surface or the inner peripheral surface, chamfering processing of the end The present invention relates to a method for manufacturing a nipple, in which an internal diameter cutting process is omitted and a product production time is greatly reduced.

일반적으로, 가스나 유체가 흐르는 관은 그 연결부분에서 유체나 가스가 세지 않아야 하며, 이를 위한 닛플의 구조를 하기에서 첨부된 도면을 참조하여 살펴본다.In general, a gas or fluid flowing tube should not count the fluid or gas at the connection portion, the structure of the nipple for this will be described with reference to the accompanying drawings.

도 1a는 종래의 닛플 구조를 나타내는 분리사시도이고, 도 1b는 종래의 닛플 조립과정을 나타내는 단면도이며, 도 1c는 종래의 닛플 조립상태를 나타내는 단면도이다.1A is an exploded perspective view showing a conventional nipple structure, FIG. 1B is a sectional view showing a conventional nipple assembly process, and FIG. 1C is a sectional view showing a conventional nipple assembly state.

종래의 닛플은 일측은 밸브몸체등에 연결되고 타측내주로는 관(50)이 삽입되며 관(50)삽입방향측 내주 선단부에는 테이퍼면(64)이 형성되고 그 내측에는 단턱(62)이 형성되어 상기 단턱(62)에 의하여 관(50)의 삽입길이가 제한됨과 아울러 관(50)의 종단부가 단턱(62)에 정밀도 있게 밀착되어 기밀이 유지되도록 하는 바디(60)와, 관(50)의 외주로 밀착되게 끼워지는 슬리브(80)와, 상기 바디(60)와 나사결합하여 슬리브(80)를 바디(60)내주로 강제로 밀어 넣어 슬리브(80)의 종단이 바디(60)의 테이퍼면(64)에 의하여 축중심방향으로 밀려서 관(50)외주를 협지하도록 하는 너트(70)로 구성된다.The conventional nipple is connected to the valve body and one side, the other side inner circumference is inserted into the tube 50, the taper surface 64 is formed on the inner peripheral end of the tube 50 insertion direction side is formed with a stepped 62 The insertion length of the tube 50 is limited by the step 62 and the end portion of the tube 50 is tightly adhered to the step 62 so that the airtightness is maintained, and the tube 50 The sleeve 80 is tightly fitted to the outer circumference, and the body 80 is screwed into the body 60 to force the sleeve 80 into the body 60 so that the end of the sleeve 80 is tapered surface of the body 60. It consists of the nut 70 pushed in the axial center direction by 64 to clamp the outer periphery of the pipe 50.

이와 같이 구성된 닛플의 제조방법을 살펴보면, 육각봉을 바디와 너트의 크기에 맞게 절단하여, 바디의 외주에는 나사를 절삭가공하고 바디의 내주에는 내경을 절삭가공 한 후 바디의 단부에 모따기 가공을 하여 바디 형성을 완료하고, 너트의 내주로는 내경을 절삭가공하여 나사를 형성하고 내경양단부와 외경양단부를 모따기 가공하여 너트를 형성하는 것으로, 이와 같은 종래의 닛플 제조방법에 의하면 바디와 너트의 내경을 절삭가공하여야 하므로, 수차례에 걸쳐 단계별로 절삭가공이 이루어져야 하므로 절삭가공공정에 시간이 오래 걸리는 문제점이 있었고, 절삭가공후 단부를 별도로 모따기 가공하여야 하므로 작업공정이 많아져서 전체적으로 제작시간이 오래걸리는 문제점이 있었다.Looking at the manufacturing method of the nipple configured as described above, by cutting the hexagon bar to the size of the body and the nut, cutting the screw on the outer periphery of the body, cutting the inner diameter on the inner periphery of the body and then chamfering the end of the body After forming the body, the inner circumference of the nut is formed by cutting the inner diameter to form a screw, and by forming the nut by chamfering the inner diameter both ends and the outer diameter both ends, according to the conventional nipple manufacturing method such as the inner diameter of the body and the nut Since cutting process has to be done in several stages, cutting process takes a long time, and it takes a long time for cutting process, and after cutting, the end has to be chamfered separately. There was this.

상기한 바와 같은 문제점을 해결하기 위한 본 발명의 목적은 육각봉을 바디와 너트의 크기에 맞게 절단한 후 단조가공하여 내경을 형성하고, 그 외주면이나 내주면에 나사를 절삭함으로써, 단부의 모따기 가공과 내경 절삭가공이 생략되어 제품 생산시간이 대폭 감소되도록 한 닛플의 제조방법을 제공하는 데 있다.An object of the present invention for solving the problems as described above is to cut the hexagonal bar to the size of the body and nut, forging to form the inner diameter, and by cutting the screw on the outer peripheral surface or the inner peripheral surface, It is to provide a manufacturing method of the nipple so that the production time of the internal diameter cutting is greatly reduced.

도 1a는 종래의 닛플 구조를 나타내는 분리사시도1A is an exploded perspective view showing a conventional nipple structure

도 1b는 종래의 닛플 조립과정을 나타내는 단면도Figure 1b is a cross-sectional view showing a conventional nipple assembly process

도 1c는 종래의 닛플 조립상태를 나타내는 단면도Figure 1c is a cross-sectional view showing a conventional nipple assembly state

도 2는 본 발명에 따른 닛플 제조방법을 나타내는 공정도Figure 2 is a process chart showing a nipple manufacturing method according to the present invention

도 3은 본 발명에 따른 닛플 제조를 위한 육각봉을 나타내는 사시도Figure 3 is a perspective view showing a hexagonal bar for manufacturing the nipple according to the present invention

도 4a는 닛플의 바디부분 단조가공상태를 나타내는 사시도Figure 4a is a perspective view showing the body portion forging process of the nipple

도 4b는닛플의 완성된 상태를 나타내는 사시도4B is a perspective view showing a completed state of the nipple

도 5a는 닛플의 너트부분 단조가공상태를 나타내는 전면사시도Figure 5a is a front perspective view showing the nut part forging processing state of the nipple

도 5b는 도 5a의 배면사시도FIG. 5B is a rear perspective view of FIG. 5A

도 5c는 너트의 완성된 상태를 나타내는 사시도5C is a perspective view of a completed state of the nut

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

60 : 바디 66 : 내경60: body 66: inner diameter

67 : 나사 70 : 너트67: screw 70: nut

76 : 내경 77 : 나사76: inner diameter 77: screw

90 : 육각봉90: hexagon bar

상기한 바와 같은 목적을 달성하기 위한 본 발명의 실시예를 하기에서 첨부된 도면을 참조하여 살펴본다.An embodiment of the present invention for achieving the object as described above looks at with reference to the accompanying drawings.

도 2는 본 발명에 따른 닛플의 제조방법을 나타내는 공정도이고, 도 3내지 도 5c는 본 발명에 따른 닛플의 제조방법을 각 공정별로 나타내는 사시도로써, 본 발명의 실시예에서 도 1a내지 도 1c와 동일한 부분의 부호는 설명의 중복을 피하고자 동일부호로 나타낸다.2 is a process chart showing a manufacturing method of the nipple according to the present invention, Figures 3 to 5c is a perspective view showing for each process the manufacturing method of the nipple according to the present invention, in the embodiment of the present invention with Figures 1a to 1c. Like reference numerals designate like reference numerals to avoid duplication of description.

본 발명에 따른 닛플의 제조방법은 도 2에 나타내는 바와 같이 금속재 육각봉을 바디와 너트의 크기에 맞게 절단하고, 단조가공에 의하여 바디와 너트에 각각 내경을 형성한 후, 바디의 외주면 양측부에 나사를 절삭하고 중심 돌출부의 양측단부 모서리에 모따기 가공을 하여 바디를 완성하고, 너트의 내경에 나사를 절삭 가공함으로써 너트를 완성하는 것이다.In the manufacturing method of the nipple according to the present invention, as shown in FIG. 2, the metal hexagon bar is cut to fit the size of the body and the nut, and after the inner diameter is formed on the body and the nut by forging, respectively, on both sides of the outer peripheral surface of the body. The screw is cut and chamfered at the edges of both ends of the central protrusion to complete the body, and the nut is finished by cutting the screw to the inner diameter of the nut.

이와 같이 구성된 본 발명의 실시예를 하기에서 보다 상세하게 살펴본다.An embodiment of the present invention configured as described above will be described in more detail below.

우선 도 3에 나타내는 금속재 육각봉(90)을 도 4a와 같이 바디(60)의 크기에 맞게 절단하고 모따기부를 갖는 금형을 사용하여 단조 가공함으로써 내경(66)을 형성함과 아울러 양측단 내경 및 외경의 모서리가 모따기 가공되도록 한 후, 도 4b와 같이 외주면 양측부에 나사(67)를 절삭하고 중심 돌출부(68)의 양측단부 모서리에 모따기 가공을 하여 바디(60)를 완성한다.First, the inner hexagonal rods 90 shown in FIG. 3 are cut to fit the size of the body 60 as shown in FIG. 4A and forged using a mold having a chamfer, thereby forming an inner diameter 66 and both inner and outer ends. After the edges of the chamfering process, as shown in Figure 4b, the screw 67 is cut on both sides of the outer circumferential surface and the chamfering process on both side edges of the central protrusion 68 to complete the body 60.

그리고, 도 3의 육각봉(90)을 너트(70)의 크기에 맞게 절단하고 모따기부를 갖는 금형을 사용하여 단조 가공함으로써, 도 5a및 도 5b에 나타내는 바와 같이 내경(76)을 형성하고, 상기한 바와 같이 내경(76)을 형성한 후 도 5c에 나타내는 바와 같이 내경(76)에 나사(77)를 절삭 가공함으로써 너트(70)를 완성한다.Then, the hexagonal bar 90 of FIG. 3 is cut to fit the size of the nut 70 and forged using a mold having a chamfer, thereby forming an inner diameter 76 as shown in FIGS. 5A and 5B. After forming the inner diameter 76 as described above, the nut 70 is completed by cutting the screw 77 to the inner diameter 76 as shown in FIG. 5C.

한편, 상기한 닛플에는 슬리브(도 1a내지 도 1c에 도시 ;80)가 선택적으로 삽입되는것으로 그 제조방법은 본 발명의 권리범위에 속하지 않는 것으로 이는 일반적인 제조방법에 의하여 제조되므로 그 상세한 설명은 생략한다.On the other hand, the nipple is selectively inserted into the sleeve (shown in Figure 1a to Figure 1c; 80), the manufacturing method does not belong to the scope of the present invention, which is manufactured by a general manufacturing method, so the detailed description thereof will be omitted. do.

따라서, 본 발명에 의하면 닛플의 성형시에 시간이 오래 걸리는 절삭가공 대신 단조가공을 함으로써 제작시간이 대폭 감소되고 생산성이 향상되는 효과가 있으며, 단조가공시에 모따기부를 갖는 금형을 사용하므로 바디와 너트에 별도의 모따기 가공이 불필요하여 작업공정 및 시간이 대폭 감소되는 효과가 있으며, 단조가공에 의하여 내경이 형성되므로 닛플의 경도가 증가하게 되는 효과가 있다.Therefore, according to the present invention, the production time is greatly reduced and productivity is improved by forging instead of cutting which takes a long time when forming the nipple, and the body and the nut are used because the mold having the chamfer is used during the forging. There is no need for a separate chamfering process, the work process and time is greatly reduced, the inner diameter is formed by the forging process has the effect of increasing the hardness of the nipple.

Claims (1)

바디(60)와 너트(70)로 구성되는 닛플의 제조방법에 있어서,In the manufacturing method of the nipple composed of the body 60 and the nut 70, 금속재의 육각봉(90)을 바디(60)의 크기에 맞게 절단하고 단조가공에 의하여 내경(66)을 형성한 후, 외주 양측부에 나사(67)를 절삭하고 중심 돌출부(68)에 모따기 가공을 하여 바디(60)를 완성하고,After cutting the hexagonal bar 90 made of metal to the size of the body 60 and forming the inner diameter 66 by forging, the screw 67 is cut on both sides of the outer circumference and chamfered on the central protrusion 68. To complete the body 60, 상기 육각봉(90)을 너트(70)의 크기에 맞게 절단하고 단조가공에 의하여 내경(76)을 형성한 후 상기 내경(76)에 나사(77)를 절삭가공함으로써 너트(70)를 완성하는 것을 특징으로 하는 닛플의 제조방법.The hexagon bar 90 is cut to fit the size of the nut 70 and the inner diameter 76 is formed by forging, and then the screw 70 is cut on the inner diameter 76 to complete the nut 70. A method of manufacturing a nipple.
KR1020020025844A 2002-05-10 2002-05-10 Manufacturing method of nipple KR20020043511A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100887548B1 (en) * 2007-08-07 2009-03-09 이방수 Valve connector and the manufacture process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0494837A (en) * 1990-08-09 1992-03-26 Tsukiboshi Seisakusho:Kk Manufacture of nipple for wheel
JPH04370486A (en) * 1991-06-19 1992-12-22 Meiji Rubber & Chem Co Ltd Manufacture of coupling metal for hose
JPH11123493A (en) * 1997-10-14 1999-05-11 Okawa Seira Kogyo Kk Manufacture of blank material for hose joint metal fitting and manufacture of hose coupling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0494837A (en) * 1990-08-09 1992-03-26 Tsukiboshi Seisakusho:Kk Manufacture of nipple for wheel
JPH04370486A (en) * 1991-06-19 1992-12-22 Meiji Rubber & Chem Co Ltd Manufacture of coupling metal for hose
JPH11123493A (en) * 1997-10-14 1999-05-11 Okawa Seira Kogyo Kk Manufacture of blank material for hose joint metal fitting and manufacture of hose coupling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100887548B1 (en) * 2007-08-07 2009-03-09 이방수 Valve connector and the manufacture process

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