KR101076374B1 - Nipple for hose joint and how to make it - Google Patents

Nipple for hose joint and how to make it Download PDF

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Publication number
KR101076374B1
KR101076374B1 KR1020090021224A KR20090021224A KR101076374B1 KR 101076374 B1 KR101076374 B1 KR 101076374B1 KR 1020090021224 A KR1020090021224 A KR 1020090021224A KR 20090021224 A KR20090021224 A KR 20090021224A KR 101076374 B1 KR101076374 B1 KR 101076374B1
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South Korea
Prior art keywords
hole
nipple
forging
hose joint
cutting
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KR1020090021224A
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Korean (ko)
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KR20100102915A (en
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박태수
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태화정밀공업(주)
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    • 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
    • B21J5/10—Piercing billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/03—Making uncoated products by both direct and backward extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/04—Piercing presses
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes

Abstract

본 발명은 니플 및 그 제작방법에 관한 것으로서, 더욱 상세하게는 호스조인트에 사용되는 홀이 형성된 니플을 제작하되, 상기 니플에 형성된 홀을 절삭가공이 아닌 단조가공에 의해 형성함으로써 자재비의 절감과 함께 제작비용을 줄일 수 있는 호스조인트용 니플 및 그 제작방법이다.The present invention relates to a nipple and a method of manufacturing the same, and more particularly, to manufacture a nipple having a hole used for the hose joint, by forming a hole formed in the nipple by forging instead of cutting, with the reduction of material cost This is a hose joint nipple and its manufacturing method which can reduce manufacturing cost.

호스조인트, 니플, 포머머신 Hose Joints, Nipples, Former Machines

Description

호스조인트용 니플 및 그 제작방법{Nipple for hose joint and how to make it}Nipple for hose joint and how to make it}

본 발명은 니플 및 그 제작방법에 관한 것으로서, 더욱 상세하게는 호스조인트에 사용되는 홀이 형성된 니플을 제작하되, 상기 니플에 형성된 홀을 절삭가공이 아닌 단조가공에 의해 형성함으로써 자재비의 절감과 함께 제작비용을 줄일 수 있는 호스조인트용 니플 및 그 제작방법이다.The present invention relates to a nipple and a method of manufacturing the same, and more particularly, to manufacture a nipple having a hole used for the hose joint, by forming a hole formed in the nipple by forging instead of cutting, with the reduction of material cost This is a hose joint nipple and its manufacturing method which can reduce manufacturing cost.

일반적으로 호스조인트라 함은 호스와 호스 사이를 연결해주기 위해 사용되는 부품으로서 철(steel) 소재로 형성한 단품이 있고, 자동차나 건설기계 내에 형성된 탱크와 호스를 연결해주기 위한 호스조인트가 있는데 그 일예로서 도 1에 도시된 호스조인트가 있다.In general, a hose joint is a part used to connect a hose and a hose, and there is a single component formed of steel, and a hose joint for connecting a hose and a tank formed in an automobile or a construction machine. As a hose joint shown in FIG.

도 1은 종래 호스조인트의 구성예시도이고, 도 2는 도 1의 A-A부 단면도이고, 도 3은 종래 호스조인트의 분리구성예시도로서, 도 1 내지 도 3에 도시된 호스 조인트는 호스(4)가 끼워지는 니플(1)과, 상기 니플(1)의 외면에 형성되어 호스(4)를 고정시켜주는 쉘(2, shell)과, 연결하고자하는 탱크 등에 나사로 결합되는 클램핑너트(3)로 형성되어 있다.1 is a view illustrating a configuration of a conventional hose joint, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is a view illustrating a separate configuration of a conventional hose joint, and the hose joint illustrated in FIGS. 1 to 3 is a hose 4. ) Is a nipple (1) into which it is fitted, a shell (2) formed on an outer surface of the nipple (1) to fix the hose (4), and a clamping nut (3) which is screwed to a tank to be connected. Formed.

상기 호스조인트의 구성 중 클램핑너트(3)의 경우 머리가 육각형(hexgon)으로 형성되고 내부에는 나사산이 형성되므로 육각형의 봉소재나 관소재를 이용하여 제작할 수 있고, 쉘(2)의 경우 관소재로 단조공정을 거쳐 형성할 수 있다.The clamping nut (3) of the configuration of the hose joint head is formed in a hexagon (hexgon) and the thread is formed inside it can be produced using a hexagonal rod material or tubular material, in the case of the shell (2) tubular material It can be formed through a forging process.

그런데, 니플은 관소재로 생산하더라도 관소재는 소재비용이 비싸 경제성이 떨어지며, 생산시 작업성이 떨어지는 문제가 있다. By the way, even if the nipple is produced as a tubular material, the tubular material is expensive and material economy is low, there is a problem in the workability during production.

현재, 니플의 경우 봉소재로 가공시 종래에는 봉소재를 크기에 맞게 절단하고 외경 단조가공을 행한 뒤에 홀을 절삭가공으로 뚫어서 생산하였으나, 이런 종래의 가공방법은 니플의 홀 만큼 자재가 절삭 소모됨으로써 자재비용이 상승하고 홀 가공을 위해 가공비용이 상승하는 문제가 있다.Currently, in the case of nipple, when processing the rod material, conventionally, the rod material was cut to size and the outer diameter forging was performed, and then the hole was produced by cutting. There is a problem in that the cost of the material rises and the processing cost increases for the hole processing.

더군다나, 외면 형상을 먼저 단조로 가공한 뒤 단조에 의해 홀을 뚫을 시 내부에 크랙이 발생하여 불량품이 생산될 우려가 많았다.In addition, the outer shape was first processed by forging, and when the hole was drilled by forging, there was a concern that a defective product was produced due to cracks inside.

따라서, 본 발명은 별도의 절삭가공없이 니플의 홀을 가공함으로써 소재비용을 절감하고 가공비 또한 절감할 수 있는 호스조인트용 니플 및 그 제작방법을 제공하는데 그 목적이 있다.Therefore, an object of the present invention is to provide a hose joint nipple and a method of manufacturing the same, which can reduce the material cost and reduce the processing cost by processing holes of the nipple without additional cutting.

본 발명은 호스조인트용 니플의 홀을 가공하되 상기 홀을 단조공정으로써 가공을 하며, 먼저 홀을 단조공정을 생성하고 외부 형상을 만든다.The present invention is to process the hole of the hose joint nipple, the hole is processed by the forging process, first to produce the hole forging process and to make the outer shape.

본 발명에 의한 호스조인트용 니플 및 그 제작방법은 별도의 절삭가공없이 니플의 홀을 가공함으로써 소재비용과 가공비를 절감하며 생산성을 향상시킬 수 있다.Hose joint nipple and the manufacturing method according to the present invention can reduce the material cost and processing cost and improve productivity by processing the hole of the nipple without a separate cutting process.

본 발명은 니플 및 그 제작방법에 관한 것으로서, 더욱 상세하게는 호스조인트에 사용되는 홀이 형성된 니플을 제작하되, 상기 니플에 형성된 홀을 절삭가공이 아닌 단조가공에 의해 형성함으로써 자재비의 절감과 함께 제작비용을 줄일 수 있는 호스조인트용 니플 및 그 제작방법이다.The present invention relates to a nipple and a method of manufacturing the same, and more particularly, to manufacture a nipple having a hole used for the hose joint, by forming a hole formed in the nipple by forging instead of cutting, with the reduction of material cost This is a hose joint nipple and its manufacturing method which can reduce manufacturing cost.

이하, 첨부된 도면에 의해 본 발명의 바람직한 실시예를 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention by referring to the accompanying drawings in detail as follows.

도 4는 본 발명의 제조공정도로서, 본 발명에 의한 호스조인트용 니플의 제작방법은 코일 소재나 봉(棒) 소재를 크기에 맞도록 자르는 절단공정(S 10)과, 상기 절단공정(S 10)을 거친 소재에 홀을 형성하는 홀 단조공정(S 20)과, 홀이 형성된 소재의 외경을 가공하는 외경단조공정(S 30)과, 표면처리 또는 열처리를 행하는 마감공정(S 40)으로 제작된다.4 is a manufacturing process diagram of the present invention, the manufacturing method of the hose joint nipple according to the present invention is a cutting step (S 10) to cut the coil material or rod material to fit the size, and the cutting step (S 10) Hole forging process (S 20) to form a hole in the rough material, the outer diameter forging process (S 30) for processing the outer diameter of the material is formed, and the finishing process (S 40) to perform the surface treatment or heat treatment .

먼저, 절단공정(S 10)은 코일 소재 또 봉 소재를 크기에 맞도록 자르는 공정으로써 최종적으로 생산될 제품의 크기에 맞게 체적을 계산하여 자른다.First, the cutting process (S 10) is a process of cutting the coil material or the rod material to fit the size, and calculates and cuts the volume according to the size of the product to be finally produced.

다음 홀 단조공정(S 20)은 절단공정(S 10)을 거친 소재에 홀을 형성하는 공정으로써 보통 홀의 깊이가 긴 경우에는 한 번의 단조로서는 홀 전체를 형성하기가 힘들고 설사 연질의 소재로 홀 전체를 형성한다 하더라도 소재에 크랙이 발생할 수 있으므로 최소 2~5번 이상 반복적으로 충격을 가해 홀을 형성하는 것이 바람직하다.The next hole forging process (S 20) is a process of forming a hole in a material that has undergone the cutting process (S 10). When the depth of the hole is long, it is difficult to form the entire hole in one forging. Even if forming a crack may occur in the material, it is preferable to form a hole by repeatedly impacting at least 2 to 5 times.

이때 홀 단조공정(S 20)에 사용되는 장비는 단조해머(forging hammer)나 단조프레스(forging press)를 사용할 수 있으나, 포머머신(former machine)을 사용하여 홀을 단조가공하는 것이 바람직한데, 단조해머나 단조프레스를 사용할 경우 단 조공정이 2~3단계에서 완료될 수 있으나 재질이 비교적 경질인 경우 제품에 크랙이 발생할 수 있으므로 포머머신을 사용하여 5~6단계로서 홀 가공을 하는 것이 더욱 바람직하다.At this time, the equipment used in the hole forging process (S 20) may use a forging hammer or a forging press, but it is preferable to forge the hole by using a former machine, forging If a hammer or forging press is used, the forging process may be completed in two to three steps, but if the material is relatively hard, it may cause cracks in the product. Do.

홀 단조공정(S 20)이 완료되면 외경단조공정(S 30)을 진행하는데 도시된 바와 같이 니플(1)에 6각형 머리(1a)를 형단조(die forging)를 이용해 6각형 머리(1a)를 성형한다. When the hole forging process (S 20) is completed, the hexagonal head (1a) by using die forging the hexagonal head (1a) to the nipple (1) as shown in proceeding the outer diameter forging process (S 30) Molding.

여기서, 외경단조 가공시 이미 가공되어 있는 홀의 직경은 큰 변화가 없으나 홀의 치수가 엄격히 관리되어야 하는 경우에는 다이(die)에 핀을 형성하여 홀의 치수를 정밀하게 형성할 수도 있다.Here, the diameter of the hole already processed during the outer diameter forging does not have a large change, but when the size of the hole is to be strictly controlled, a pin may be formed on the die to precisely form the size of the hole.

물론, 외경단조공정(S 30) 역시 단조해머나 단조프레스를 사용할 수 있으며 포머머신 역시 사용할 수 있다.Of course, the outer diameter forging process (S 30) can also use a forging hammer or forging press, and can also use a former machine.

상술한 실시예에서, 포머머신을 사용하여 홀을 형성하는 경우 도 5와 같이 1단계(S 21) 압축공정(upsetting), 2단계(S 22) 전방압출공정(forward extrusion), 3단계(S 23) 후방압출공정(backward extrusion), 4단계(S 24) 피어싱공정(piercing), 5단계(S 25) 외면처리공정(burnish)으로 홀을 형성할 수 있다.In the above-described embodiment, in the case of forming a hole using a former machine, as shown in FIG. 5, a first step S21, an upsetting step, a second step S 22, a forward extrusion process, and a third step S 23) The hole may be formed by a backward extrusion process, a four-step (S 24) piercing process, and a five-step (S 25) exterior treatment process (burnish).

홀과 외경의 단조공정(S 20, S 30)이 완료되고 나면 마감공정(S 40)을 행하 는데, 마감공정은 표면에 아연 등의 도금을 하여 내식성(耐蝕性)을 높일 수 있고 열처리를 하여 경도를 높일 수 있다.After the forging process (S 20, S 30) of the hole and the outer diameter is completed, the finishing process (S 40) is performed. The finishing process is to plate the surface with zinc or the like to increase the corrosion resistance and heat treatment. Hardness can be increased.

상술한 공정들 중 절단공정(S 10)의 앞에는 원소재가 띠 형상으로 감겨져 있는 코일일 경우 원소재를 펴는 레벨링공정(leveling)이 부가될 수 있다.Among the above-described steps, in the case of the coil in which the raw material is wound in a band shape, a leveling step of spreading the raw material may be added in front of the cutting step S 10.

여기서, 상기 니플(1)의 소재는 탄소강(구조용 탄소강)이 적합하며, 탄소(C)의 함유량이 0.2~0.4%인 반경강이나, 0.4~0.5%인 경강을 사용하는 것이 더욱 바람직하다.Here, the material of the nipple 1 is preferably carbon steel (structural carbon steel), and more preferably, a radial steel having a content of carbon (C) of 0.2 to 0.4% or a hard steel of 0.4 to 0.5% is used.

도 6은 본 발명의 또 다른 제조공정예시도로서, 본 발명에 의한 호스조인트용 니플의 제작방법은 코일 소재나 봉(棒) 소재를 크기에 맞게 자르는 절단공정(S1)과, 외경 및 홀의 위치를 잡아주는 자리잡기 공정(S2)과, 홀을 뚫는 홀단조공정(S3)과, 홀을 깊게 뚫고 길이를 늘이는 홀단조 및 전방압출공정(S4)과, 상하부에 형성된 홀을 관통하는 피어싱공정(S5)과, 외경 성형 및 길이를 늘리는 성형 및 압출공정(S6)과, 머리부를 형성하는 머리부성형공정(S7)으로 제작할 수 있다.Figure 6 is another manufacturing process example of the present invention, the manufacturing method of the hose joint nipple according to the present invention is a cutting step (S1) for cutting the coil material or rod material to the size, the outer diameter and the position of the hole Positioning process (S2) for holding the hole, hole forging process (S3) for drilling holes, hole forging and forward extrusion process (S4) for drilling holes deep and extending the length, and piercing process for penetrating the holes formed in the upper and lower parts ( S5), shaping | molding and extrusion process (S6) which increases outer diameter shaping and length, and the head shaping process (S7) which forms a head can be produced.

즉, 상기 단계 중 절단공정(S1)은 절단공정(S10)에 대응되고, 자리잡기 공정(S2), 홀단조공정(S3), 홀단조 및 전방압출공정(S4), 피어싱공정(S5)은 홀 단조공정(S 20)에 대응되며, 성형 및 압출공정(S6)과 머리부성형공정(S7)은 외경단조공 정(S 30)에 대응된다.That is, the cutting step (S1) of the step corresponds to the cutting step (S10), the positioning process (S2), hole forging process (S3), hole forging and forward extrusion process (S4), piercing process (S5) Corresponding to the hole forging process (S 20), the molding and extrusion process (S6) and the head shaping process (S7) corresponds to the outer diameter forging process (S 30).

따라서, 상기 머리부성형공정(S7)이 완료된 후에는 별도의 마감공정(S 40)을 부가할 수 있다.Therefore, after the head shaping step S7 is completed, a separate finishing step S40 may be added.

도 1은 종래 호스조인트의 구성예시도1 is a configuration example of a conventional hose joint

도 2는 도 1의 A-A부 단면도FIG. 2 is a sectional view taken along the line A-A of FIG.

도 3은 종래 호스조인트의 분리구성예시도Figure 3 is an example of a separate configuration of the conventional hose joint

도 4는 본 발명의 제조공정도Figure 4 is a manufacturing process of the present invention

도 5는 본 발명의 홀 단조공정 예시도Figure 5 is an exemplary view of the hole forging process of the present invention

도 6은 본 발명의 또 다른 제조공정예시도6 is another exemplary manufacturing process of the present invention

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

1. 니플 2. 쉘1. Nipple 2. Shell

3. 클램핑너트 4. 호스3. Clamping Nut 4. Hose

11. 소재 12. 다이11. Material 12. Die

13. 해머13. Hammer

Claims (6)

코일 소재나 봉(棒) 소재를 크기에 맞게 자르는 절단공정(S1)과, 외경 및 홀의 위치를 잡아주는 자리잡기 공정(S2)과, 홀을 뚫는 홀단조공정(S3)과, 홀을 깊게 뚫고 길이를 늘이는 홀단조 및 전방압출공정(S4)과, 상하부에 형성된 홀을 관통하는 피어싱공정(S5)과, 외경 성형 및 길이를 늘리는 성형 및 압출공정(S6)과, 머리부를 형성하는 머리부성형공정(S7)으로 제작되며,Cutting process (S1) to cut the coil material or rod material to size, the positioning process (S2) to hold the outer diameter and the position of the hole, the hole forging process (S3) to drill the hole, and drilled the hole deeply Hole forging and front extrusion process (S4) to increase the length, piercing process (S5) to penetrate the holes formed in the upper and lower parts, molding and extrusion process (S6) to increase the outer diameter forming and length, and head forming to form the head Produced in step (S7), 상기 홀 단조공정은 포머머신을 사용하여 홀을 형성하되, 1단계 압축공정(S 21), 2단계 전방압출공정(S 22), 3단계 후방압출공정(S 23), 4단계 피어싱공정(S 24), 5단계 외면처리공정(S 25)으로 홀을 형성하는 것이 특징인 호스조인트용 니플의 제작방법 The hole forging process is to form a hole using a former machine, one step compression step (S 21), two step forward extrusion process (S 22), three step back extrusion process (S 23), four stage piercing process (S 24), the manufacturing method of the hose joint nipple characterized in that the hole is formed by a five-step surface treatment process (S 25) 삭제delete 삭제delete 제 1항에 있어서,The method of claim 1, 절단공정(S 10) 또는 절단 및 외경단조공정(S1)의 앞에는 원소재가 띠 형상으로 감겨 있는 코일일 경우 원소재를 펴는 레벨링공정(leveling)이 부가되는 것이 특징인 호스조인트용 니플의 제작방법The method of manufacturing a hose joint nipple, characterized in that a leveling step of straightening the raw material is added in the case of the coil wound in a band shape before the cutting step (S 10) or the cutting and outer diameter forging step (S1). 제1항 또는 제4항 중 어느 한 항의 방법으로 제작되는 것이 특징인 호스조인트용 니플Nipple for hose joint, characterized in that produced by the method of any one of claims 1 or 4. 제 5항에 있어서, The method of claim 5, 상기 니플의 소재는 탄소강인 것이 특징인 호스조인트용 니플The nipple for the hose joint, characterized in that the material of the nipple is carbon steel
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Cited By (3)

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KR101109767B1 (en) * 2011-07-21 2012-02-24 동방테크 주식회사 Pipe fittingprocess of manufacture using seamless pipe
KR102142098B1 (en) 2020-02-11 2020-08-06 태화정밀공업(주) Method of making a hose-joint nipple
KR20230121279A (en) * 2022-02-11 2023-08-18 남재호 Manufacturing method of inlet pipe for grouting packer

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Publication number Priority date Publication date Assignee Title
KR101503885B1 (en) * 2013-11-19 2015-03-19 (주)영완 Method for manufacturing a hinge axile bolt for folding bycycle
KR102563309B1 (en) * 2021-12-16 2023-08-04 주식회사 디엠테크놀로지 Nipple pipe manufacturing method and connection assembly for hydraulic hoses comprising the nipple pipe made by the method

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KR100598541B1 (en) 2004-10-11 2006-07-10 현대자동차주식회사 Product method for nipples
JP2006218527A (en) 2005-02-14 2006-08-24 Meiji Flow Systems Co Ltd Method for manufacturing eye joint ferrule

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KR100598541B1 (en) 2004-10-11 2006-07-10 현대자동차주식회사 Product method for nipples
JP2006218527A (en) 2005-02-14 2006-08-24 Meiji Flow Systems Co Ltd Method for manufacturing eye joint ferrule

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101109767B1 (en) * 2011-07-21 2012-02-24 동방테크 주식회사 Pipe fittingprocess of manufacture using seamless pipe
KR102142098B1 (en) 2020-02-11 2020-08-06 태화정밀공업(주) Method of making a hose-joint nipple
KR20230121279A (en) * 2022-02-11 2023-08-18 남재호 Manufacturing method of inlet pipe for grouting packer
KR102641840B1 (en) 2022-02-11 2024-02-29 남재호 Manufacturing method of inlet pipe for grouting packer

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