KR102398159B1 - Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key - Google Patents

Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key Download PDF

Info

Publication number
KR102398159B1
KR102398159B1 KR1020200169149A KR20200169149A KR102398159B1 KR 102398159 B1 KR102398159 B1 KR 102398159B1 KR 1020200169149 A KR1020200169149 A KR 1020200169149A KR 20200169149 A KR20200169149 A KR 20200169149A KR 102398159 B1 KR102398159 B1 KR 102398159B1
Authority
KR
South Korea
Prior art keywords
cylindrical key
clamp
forming
unit
reinforcing bar
Prior art date
Application number
KR1020200169149A
Other languages
Korean (ko)
Inventor
허인태
Original Assignee
허인태
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 허인태 filed Critical 허인태
Priority to KR1020200169149A priority Critical patent/KR102398159B1/en
Application granted granted Critical
Publication of KR102398159B1 publication Critical patent/KR102398159B1/en

Links

Images

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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forging (AREA)

Abstract

The present invention relates to a method for manufacturing a cylindrical key of a clamp for a reinforcement coupler. The method for manufacturing a cylindrical key of a clamp for a reinforcement coupler comprises: a first step of preparing a material forming a fixing piece individually divided from a center hole by blanking a metal plate having a predetermined thickness; a second step of forming a saw-toothed unit on the inner surface of the fixing piece and performing a forging process of extruding a periphery of the center hole, a support unit, and an inclined unit to the outside on the outer surface; a third step of firstly and secondarily forming a cylindrical key having a connection unit for forming a connection ring by pressurizing the center of the material; and a fourth step of completing the cylindrical key having the connection ring by cutting a part of the connection unit. According to the present invention, an inclined surface, the support unit, and the saw-toothed unit forming the cylindrical key of the clamp for a reinforcement coupler are formed by cold forging so that rigidity and durability are largely improved. Also, the method for manufacturing a cylindrical key of a clamp for a reinforcement coupler enables simple and rapid manufacture. Therefore, mass production is possible, and a production cost can be saved. As the inclined surface and the support unit are formed to be smooth by cold forging, a frictional force can be reduced when a sleeve pressurizes the cylindrical key.

Description

철근 커플러용 클램프의 원통형 키이 제조방법 및 원통형 키이{Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key}Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key

본 발명은 철근 커플러용 클램프를 구성하는 원통형 키이를 제조하려는 것으로서, 더욱 상세하게는 원통형 키이를 제조시 소재를 금속판재로 하여 냉간단조에 의해서 간단하고 신속하게 제조할 수 있게 함으로써, 대량생산이 가능하여 원가를 절감하는 동시에 강성 및 내구성이 크게 향상된 철근 커플러용 클램프의 원통형 키이 제조방법 및 원통형 키이에 관한 것이다.The present invention is to manufacture a cylindrical key constituting a clamp for a reinforcing bar coupler, and more specifically, by making the cylindrical key a metal plate as a material to be manufactured simply and quickly by cold forging, mass production is possible The present invention relates to a method for manufacturing a cylindrical key of a clamp for a reinforcing bar coupler and a cylindrical key with significantly improved rigidity and durability while reducing costs.

주지하는 바와 같이 각종 철근 콘크리트 구조물은, 철근, 모래, 자갈, 및 그 밖의 골재 등에 물을 일정한 비율로 혼합하여 응고시킨 복합 조성물로서, 콘크리트 구조물을 구성하는 벽체, 기둥, 보 등을 거푸집으로 구성하고, 그 속에 철근을 배근하여 콘크리트를 타설한 후, 일정기간 동안 양생시켜 거푸집을 제거하면 철근 콘크리트 구조물이 완성된다.As is well known, various types of reinforced concrete structures are composite compositions obtained by mixing and solidifying water in a certain ratio with reinforcing bars, sand, gravel, and other aggregates. , the reinforced concrete structure is completed when the formwork is removed by placing reinforcing bars in it, pouring the concrete, curing it for a certain period of time.

이러한 철근 콘트리트 구조물 속에 배근된 철근은 휨 모멘트에 의한 인장 또는 압축 응력을 부담하게 되는 것으로서, 상기 철근은 다양한 직경과 길이 그리고, 표면에 마디와 리브가 있는 이형철근과 표면에 마디가 없는 원형철근으로 생산된다.The reinforcing bars placed in these reinforced concrete structures are subjected to tensile or compressive stress due to the bending moment, and the rebars are produced with various diameters and lengths, and deformed reinforcing bars with nodes and ribs on the surface and round reinforcing bars without joints on the surface. do.

상기한 바와 같은 철근은 생산할 때 길이가 한정되어 있기 때문에 콘크리트 구조물을 구축하기 위한 거푸집의 가로, 세로 길이가 철근 1개의 길이 이상으로 긴 경우에는 2개 이상의 철근을 연결하여 배근을 하게 된다.Since the length of reinforcing bars as described above is limited during production, when the horizontal and vertical lengths of the formwork for constructing a concrete structure are longer than the length of one reinforcing bar, two or more reinforcing bars are connected to provide reinforcement.

상기와 같이 2개 이상의 철근을 연결할 때 철근 커플러용 클램프를 사용하게 되며, 상기 클램프는 2개 이상 철근이 상호 일체성 및 연속성에 직접적인 영향을 미치게 되고 이는 결국 콘크리트 구조물의 내구성에 영향을 주게 되므로 클램프의 결속력 및 내구성에 대한 기능이 매우 중요시 된다고 할 수 있다.When connecting two or more reinforcing bars as described above, a clamp for a rebar coupler is used, and the clamp directly affects the unity and continuity of the two or more reinforcing bars, which in turn affects the durability of the concrete structure. It can be said that the function of cohesiveness and durability is very important.

종래, 철근 커플러용 클램프는 주물이나 기계적 가공에 의해서 다양한 구조로 제조되고 있는데, 대부분은 철근을 연결하여 고정하는 고정력이 약한 단점이 있어 이를 해결하기 위하여 최근에 철근 커플러용 클램프가 개발되었으며, 상기한 철근 커플러용 클램프의 구성은 클램프 본체와, 상기 클램프 본체에 결합되어 철근을 잡아주는 원통형 키이와, 상기 원통형 키이가 철근을 조여줄 수 있도록 가압하는 슬리브와, 상기 슬리브가 원통형 키이를 가압하여 철근을 조여줄 수 있게 조임너트가 클램프 본체에 체결되어 구성된다.Conventionally, clamps for rebar couplers have been manufactured in various structures by casting or mechanical processing, but most of them have a weak fixation force to connect and fix rebars. In order to solve this, clamps for rebar couplers have been recently developed, The configuration of the clamp for the reinforcing bar coupler includes a clamp body, a cylindrical key coupled to the clamp body to hold the reinforcing bar, a sleeve for pressing the cylindrical key to tighten the reinforcing bar, and the sleeve pressing the cylindrical key to secure the reinforcing bar A tightening nut is fastened to the clamp body so that it can be tightened.

상기한 철근 커플러용 클램프를 구성하며, 클램프 본체에 설치되어 철근을 잡아주는 원통형 키이의 제조방법을 살펴본다.A method of manufacturing a cylindrical key constituting the clamp for the reinforcing bar coupler described above and installed in the clamp body to hold the reinforcing bar will be described.

환봉을 소재로 하여 소정의 길이로 절단하고, 절단된 양단부의 모서리를 깎아 내는 면취가공과, 원통형 키이의 외부에 일측부분을 경사부와 지지부를 절삭가공으로 형성한 후, 중심부에 관통공을 절삭가공으로 형성하는 동시에 후육부의 내면에 톱니부를 가공한다.Using a round bar as a material, cutting it to a predetermined length, chamfering to cut the edges of the cut both ends, forming an inclined part and a support part on the outside of the cylindrical key by cutting one side, and then cutting a through hole in the center At the same time as forming by machining, the toothed part is machined on the inner surface of the thick part.

이렇게 기계적 가공에 의해서 생산되면, 클램프의 원통형 키이는 금속조직이 약해서 강성과 내구성이 떨어지는 단점이 있을 뿐만 아니라, 대량생산이 불가능하여 제조원가가 비싸게 형성될 수밖에 없기 때문에 경제적인 측면에서도 바람직하지 못한다는 등 클램프의 원통형 키이를 제조하는 방법에 많은 문제가 있다.When produced by mechanical processing in this way, the cylindrical key of the clamp has a weak metal structure and thus has poor rigidity and durability. There are many problems with the method of manufacturing the cylindrical key of the clamp.

한국 등록실용 제20-0370652호(2004년12월07일.등록)Korea Registered Utility No. 20-0370652 (December 07, 2004. Registered) 한국 공개특허 제10-2009-0118413호(2009년11월18일.공개)Korean Patent Publication No. 10-2009-0118413 (November 18, 2009. published)

본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 본 발명은 철근 커플러용 클램프의 원통형 키이를 제조시 냉간단조에 의해서 가능하게 하여 강성 및 내구성 향상과 관통공 및 경사면이 매끄럽게 형성된 철근 커플러용 클램프의 원통형 키이를 제공하는데 그 목적이 있다.The present invention is to solve the above problems, and the present invention enables the cylindrical key of the clamp for a rebar coupler to be manufactured by cold forging, thereby improving the rigidity and durability, and a through hole and a smooth inclined surface of a clamp for a rebar coupler. An object of the present invention is to provide a cylindrical key.

특히, 커플러용 클램프의 원통형 키이를 냉간단조에 의해서 보다 간단하고 신속하게 제조할 수 있는 철근 커플러용 클램프의 슬리브 제조방법을 제공함으로써, 대량생산을 가능하게 하여 생산원가를 절감할 수 있는 철근 커플러용 클램프의 원통형 키이를 제공하는데 그 목적이 있다.In particular, by providing a sleeve manufacturing method of a clamp for a rebar coupler that can more simply and quickly manufacture a cylindrical key of a clamp for a coupler by cold forging, mass production is possible and production cost can be reduced. An object of the present invention is to provide a cylindrical key of a clamp.

본 발명에 의한 철근 커플러용 클램프의 원통형 키이는, 원통형 키이 본체의 중심에 철근이 결합될 수 있도록 관통공이 형성되는 동시에 연결링에 의해서 연결된 4개의 고정편이 형성되고, 상기 고정편의 내면 일측에는 철근에 걸리도록 톱니부가 형성되며, 상기 톱니부의 외부에는 원통형 키이가 철근을 가압할 수 있도록 하기 위한 경사부와 지지부가 구비되어 있다.In the cylindrical key of the clamp for a reinforcing bar coupler according to the present invention, a through hole is formed so that the reinforcing bar can be coupled to the center of the cylindrical key body, and at the same time, four fixing pieces connected by a connecting ring are formed. A toothed portion is formed so as to be caught, and an inclined portion and a support portion are provided on the outside of the toothed portion so that the cylindrical key can press the reinforcing bar.

상기와 같이 구성된 철근 커플러용 클램프의 원통형 키이 제조방법은, 소정의 두께를 갖는 금속판재를 블랭킹하여 센터구멍과 분할된 각각의 고정편을 형성하는 소재를 준비하는 1단계; 고정편의 일측 외면으로는 경사부와 지지부 및 센터구멍의 주변을 외부로 밀어내고, 경사부와 지지부의 내면에는 톱니부를 형성하는 단조가공하는 2단계; 센터구멍의 중심을 가압하여 연결링을 형성하기 위한 연결부가 있는 원통형 키이를 1차, 2차로 성형하는 3단계; 및, 연결부의 일부를 절단하여 연결링이 형성된 원통형 키이를 완성하는 4단계;로 이루어진 것이 본 발명에 특징이다.A method for manufacturing a cylindrical key of a clamp for a reinforcing bar coupler configured as described above includes: a first step of preparing a material for forming a center hole and each fixed piece divided by blanking a metal plate having a predetermined thickness; A second step of forging to push the periphery of the inclined portion, the support portion, and the center hole to the outside with the outer surface of one side of the fixing piece, and forging the inner surface of the inclined portion and the support portion to form a sawtooth portion; A third step of forming a cylindrical key having a connecting portion for forming a connecting ring by pressing the center of the center hole in the primary and secondary stages; And, by cutting a part of the connection part to complete the cylindrical key having a connection ring is formed; it is characterized in the present invention to consist of.

본 발명에 의하면, 철근 커플러용 클램프의 원통형 키이를 구성하는 경사면, 지지부 및 톱니부가 냉간단조로 형성하였기 때문에 강성 및 내구성이 크게 향상되는 효과가 있다.According to the present invention, there is an effect that the rigidity and durability are greatly improved because the inclined surface, the support portion and the tooth portion constituting the cylindrical key of the clamp for the reinforcing bar coupler are formed by cold forging.

본 발명에 의하면, 냉간단조에 의해서 간단하고 신속하게 제조할 수 있기 때문에 대량생산이 가능하여 원가를 절감할 수 효과가 있다.According to the present invention, since it can be manufactured simply and quickly by cold forging, mass production is possible, thereby reducing the cost.

본 발명에 의하면, 경사면 및 지지부가 냉간단조에 의해서 매끄럽게 형성되었기 때문에 슬리브가 원통형 키이를 가압하는 작용을 할 때 마찰력을 줄여주는 효과가 있다.According to the present invention, since the inclined surface and the support portion are smoothly formed by cold forging, there is an effect of reducing frictional force when the sleeve acts to press the cylindrical key.

도 1은 본 발명에 의한 원통형 키이의 구성을 보인 사시도
도 2는 본 발명에 의한 원통형 키이의 성형단계를 보인 예시도
도 3은 본 발명에 의한 원통형 키이가 설치된 클램프 본체, 슬리브, 조임너트가 분해된 상태를 보인 사시도1 is a perspective view showing the configuration of a cylindrical key according to the present invention;
Figure 2 is an exemplary view showing the molding step of the cylindrical key according to the present invention
Figure 3 is a perspective view showing the disassembled state of the clamp body, sleeve, and tightening nut installed with a cylindrical key according to the present invention;

본 발명에 의한 철근 커플러용 클램프의 슬리브 제조방법을 첨부된 도면과 관련하여 상세하게 살펴본다.A method of manufacturing a sleeve of a clamp for a reinforcing bar coupler according to the present invention will be described in detail with reference to the accompanying drawings.

이하 본 발명을 구현하기 위한 바람직한 구성 실시 예를 설명함에 있어 본 발명의 기술적 사상을 본 문서에 기재된 실시 예에 기재된 실시 형태로 한정하려는 것이 아니며, 본 발명의 실시 예의 다양한 변경(modifications), 균등물(equivalents) 및/또는 대체물(alternatives)을 포함하는 것으로 이해되어야 할 것이다.Hereinafter, in describing preferred configuration examples for implementing the present invention, it is not intended to limit the technical spirit of the present invention to the embodiments described in the embodiments described in this document, and various modifications and equivalents of the embodiments of the present invention (equivalents) and/or alternatives (alternatives) are to be understood.

먼저, 철근 커플러용 클램프의 구성을 살펴본다. 상기 철근 커플러용 클램프는, 클램프 본체(11)와, 상기 클램프 본체(11)에 결합되어 철근을 잡아주는 원통형 키이(1)와, 상기 원통형 키이가 철근을 조여줄 수 있도록 가압하는 슬리브(20)와, 상기 슬리브가 원통형 키이를 가압하여 철근을 조여줄 수 있게 조임너트(30)가 클램프 본체(11)에 체결되어 구성된다.First, look at the configuration of the clamp for the rebar coupler. The clamp for the reinforcing bar coupler includes a clamp body 11, a cylindrical key 1 coupled to the clamp body 11 to hold the reinforcing bar, and a sleeve 20 for pressing the cylindrical key to tighten the reinforcing bar. And, a tightening nut 30 is fastened to the clamp body 11 so that the sleeve can press the cylindrical key to tighten the reinforcing bar.

상기와 같이 구성된 철근 커플러용 클램프 구성요소 중에 본 발명에 의한 클램프의 원통형 키이는, 원통형 키이(1)의 중심으로 철근이 결합될 수 있도록 관통공(2)이 형성되는 동시에 연결링(3)에 의해서 연결된 4개의 고정편(4)이 형성되고, 상기 고정편(4)의 내면 일측에는 철근에 걸리도록 톱니부(4-1)가 형성되며, 상기 톱니부(4-1)의 외부에는 원통형 키이(1)가 철근을 가압할 수 있도록 하기 위한 경사부(4-2)와 지지부(4-3)가 구비되어 있다.Among the clamp components for the rebar coupler configured as described above, the cylindrical key of the clamp according to the present invention is formed with a through hole 2 so that the reinforcing bar can be coupled to the center of the cylindrical key 1 and at the same time as the connecting ring 3 Four fixed pieces 4 connected by the are formed, and on one side of the inner surface of the fixed piece 4, a toothed part 4-1 is formed so as to be caught on the reinforcing bar, and the outer side of the toothed piece 4-1 has a cylindrical shape. An inclined portion 4-2 and a support portion 4-3 are provided for the key 1 to press the reinforcing bar.

상기와 같이 구성된 철근 커플러용 클램프의 슬리브 제조방법을 첨부된 도면과 관련하여 상세히 살펴본다.A method of manufacturing the sleeve of the clamp for the reinforcing bar coupler configured as described above will be described in detail with reference to the accompanying drawings.

상기와 같이 구성된 철근 커플러용 클램프의 원통형 키이 제조방법은,The cylindrical key manufacturing method of the clamp for the reinforcing bar coupler configured as described above,

소정의 두께를 갖는 금속판재를 블랭킹하여 소재(100)를 준비하는 1단계; 상기 1단계; 소재(100)의 가운데 센터구멍(101)과 분할된 4개의 고정편을 형성하기 위한 단계;이다.A first step of preparing a material 100 by blanking a metal plate having a predetermined thickness; the first step; A step for forming the center hole 101 and the divided four fixing pieces of the material 100;

블랭킹된 소재(100)에 형성된 4개의 고정편의 내면에는 톱니부(4-1)를 형성하고 외면에는 경사부(4-2)와 지지부(4-3)를 형성하며, 센터구멍(101)의 주변을 외부로 밀어내는 단조가공하는 2단계; 상기 2단계;로 톱니부와 경사부 및 지지부가 형성된 1차단조된 소재(100)의 중심을 가압하여 연결링(3)을 형성하기 위한 연결부(3-1)가 있는 원통형 키이(1)를 1차, 2차로 성형하는 3단계; 상기 3단계;에 의해서 성형된 원통형 키이(1)의 연결부(3-1) 하단 일부를 절단하여 연결링(3)이 형성된 원통형 키이(1)를 완성하는 4단계;로 이루어진다.In the inner surface of the four fixing pieces formed in the blanked material 100, a toothed portion 4-1 is formed, and an inclined portion 4-2 and a support portion 4-3 are formed on the outer surface, and the center hole 101 of Step 2 of forging to push the periphery to the outside; In the second step; a cylindrical key (1) having a connecting portion (3-1) for forming a connecting ring (3) by pressing the center of the first forged material 100 in which the toothed portion, the inclined portion and the support portion are formed. 3 steps of primary and secondary molding; A fourth step of completing the cylindrical key 1 on which the connecting ring 3 is formed by cutting a part of the lower end of the connecting portion 3-1 of the cylindrical key 1 molded by the third step; is made.

이상과 같은 제조방법에 의해서 제조된 철근 커플러용 클램프의 원통형 키이(1)는 클램프 본체(10)를 구성하는 가이드편(11)에 결합되어 클램프 본체(10)의 중심으로 결합된 철근을 고정시키기 위한 것으로서, 경사면(20-1)을 갖는 돌출부(20-2)가 구비된 슬리브(20)가 조임너트(30)에 의해 밀려들어가면서 슬리브를 구성하는 경사면(20-1)을 갖는 돌출부(20-2)가 원통형 키이(1)를 구성하며, 연결링(3)에 의해서 연결된 고정편(4)의 외부에 형성된 경사부(4-2)와 지지부(4-3)를 가압하게 된다.The cylindrical key 1 of the clamp for the reinforcing bar coupler manufactured by the manufacturing method as described above is coupled to the guide piece 11 constituting the clamp body 10 to fix the reinforcing bar coupled to the center of the clamp body 10 . For this purpose, the sleeve 20 provided with the protrusion 20-2 having the inclined surface 20-1 is pushed in by the tightening nut 30 and the protrusion 20- having the inclined surface 20-1 constituting the sleeve. 2) constitutes the cylindrical key 1, and presses the inclined portion 4-2 and the support portion 4-3 formed on the outside of the fixing piece 4 connected by the connecting ring 3 .

이렇게 슬리브에 의해서 원통형 키이를 구성하는 고정편이 가압되면, 고정편(4)의 내면 일측에 형성된 톱니부(4-1)가 철근에 파고들어가서 철근을 가압할 수 있도록 하는데, 4개의 고정편(4)의 외부에 형성된 경사부(4-2)와 지지부(4-3) 및 고정편의 내면에 형성된 톱니부(4-1)가 냉간단조에 의해 제조되면서 금속조직이 조밀하게 형성되었기 때문에 톱니부가 철근을 파고들어 철근이 이탈하지 못하게 잡아주는 작용을 하는데 기여하게 되고, 경사부 및 지지부가 매끄럽기 때문에 슬리브에 의해서 원통형 키이가 철근을 조여주기 위해 이동할 때 마찰을 줄여 원활한 작동이 이루어질 수 있게 되는 것이다.When the fixing piece constituting the cylindrical key is pressed by the sleeve in this way, the toothed portion 4-1 formed on one side of the inner surface of the fixing piece 4 digs into the reinforcing bar to press the reinforcing bar, and the four fixed pieces (4) ), since the metal structure was densely formed while the inclined portion 4-2, the support 4-3, and the toothed portion 4-1 formed on the inner surface of the fixed piece were manufactured by cold forging, the toothed portion was reinforcing bar. It contributes to the action of holding the reinforcing bar from breaking out, and since the inclined portion and the support are smooth, the sleeve reduces friction when the cylindrical key moves to tighten the reinforcing bar, so that smooth operation can be achieved.

1: 원통형 키이
2: 관통공
3: 연결링
4: 고정편
4-1: 톱니부
4-2: 경사부
4-3: 지지부1: Cylindrical key
2: Through hole
3: connecting ring
4: batten
4-1: Toothed part
4-2: inclined part
4-3: support

Claims (2)

소정의 두께를 갖는 금속판재를 블랭킹하여 센터구멍(101)과 각각 분할된 4개의 고정편이 형성된 소재(100)를 준비하는 1단계;
블랭킹된 소재(100)에 형성된 고정편의 내면에는 톱니부(4-1)를 형성하고 외면에는 경사부(4-2)와 지지부(4-3)를 형성하며, 센터구멍(101)의 주변을 외부로 밀어내는 단조가공하는 2단계;
상기 2단계;로 톱니부와 경사부 및 지지부가 형성된 1차단조된 소재의 중심을 가압하여 연결링을 형성하기 위한 연결부가 있는 원통형 키이를 1차, 2차로 성형하는 3단계;
상기 3단계;에 의해서 성형된 원통형 키이(1)의 연결부(3-1) 하단 일부를 절단하여 연결링(3)이 형성된 원통형 키이(1)를 완성하는 4단계;로 이루어지는 것을 특징으로 하는 철근 커플러용 클램프의 원통형 키이 제조방법.A first step of blanking a metal plate having a predetermined thickness to prepare a material 100 having a center hole 101 and four divided fixing pieces, respectively;
A toothed portion 4-1 is formed on the inner surface of the fixing piece formed in the blanked material 100, and an inclined portion 4-2 and a support portion 4-3 are formed on the outer surface, and the periphery of the center hole 101 is formed. Step 2 of forging to push outward;
Step 2; Step 3 of primary and secondary molding of a cylindrical key having a connection portion for forming a connection ring by pressing the center of the primary forged material in which the sawtooth portion, the inclined portion and the support portion are formed;
A reinforcing bar characterized in that it consists of; A method for manufacturing a cylindrical key of clamp for coupler. 삭제delete
KR1020200169149A 2020-12-07 2020-12-07 Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key KR102398159B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020200169149A KR102398159B1 (en) 2020-12-07 2020-12-07 Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020200169149A KR102398159B1 (en) 2020-12-07 2020-12-07 Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key

Publications (1)

Publication Number Publication Date
KR102398159B1 true KR102398159B1 (en) 2022-05-17

Family

ID=81803772

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020200169149A KR102398159B1 (en) 2020-12-07 2020-12-07 Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key

Country Status (1)

Country Link
KR (1) KR102398159B1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200370652Y1 (en) 2004-09-18 2004-12-23 신현택 nailing nut for steel reinforcement
KR20090118413A (en) 2008-05-13 2009-11-18 주식회사 보은금속 Mold for molding a safety belt sleeve and manufacturing method of a safety belt sleeve
KR20200009747A (en) * 2018-07-20 2020-01-30 이시욱 One-touch type steel easy coupler for biting iron rod
KR20200120048A (en) * 2019-04-11 2020-10-21 현대금속산업(주) Key unit for Steel Connecting coupler

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200370652Y1 (en) 2004-09-18 2004-12-23 신현택 nailing nut for steel reinforcement
KR20090118413A (en) 2008-05-13 2009-11-18 주식회사 보은금속 Mold for molding a safety belt sleeve and manufacturing method of a safety belt sleeve
KR20200009747A (en) * 2018-07-20 2020-01-30 이시욱 One-touch type steel easy coupler for biting iron rod
KR20200120048A (en) * 2019-04-11 2020-10-21 현대금속산업(주) Key unit for Steel Connecting coupler

Similar Documents

Publication Publication Date Title
CN110832151B (en) One touch type steel bar connector
CN101228321A (en) Segments for building spliced prestressed concrete girder and method of manufacturing the segments
JP2010174474A (en) Prestressed concrete pile, method of manufacturing the same, and connection structure between pile and footing
KR101269639B1 (en) The core-type sleeve of precast concrete for member of framework
JP2579577B2 (en) Method of introducing prestress into concrete member using hollow PC steel rod
JP2008126544A (en) Prestress introduction method and prestressed concrete member by pretension method
KR102398159B1 (en) Cylindrical Key of Clamp for Reinforcement Coupler and Cylindrical Key
KR102398169B1 (en) Methods of manufacture of conical key of clamp for rebar coupler and conical key
KR102473333B1 (en) Clamp for reinforced coupler with integral key and method of manufacturing the clamp
KR20220080252A (en) Conical key of clamp for rebar coupler
KR100724634B1 (en) Steel reinforcement coupler
KR20220080251A (en) Manufacturing method and sleeve of clamp for rebar coupler
KR20110017551A (en) Rebar coupler connections
KR20220080250A (en) Manufacturing method and clamp body of clamp body for rebar coupler
JP2012057338A (en) Concrete structure member using stainless steel reinforcing bars
KR102501205B1 (en) Integral one-touch quick coupler for connecting reinforcing bar with reinforcing ring
KR200400440Y1 (en) A coupling device of steel reinforcing
CN221855878U (en) Opposite-pulling hollow wall structure
KR200398060Y1 (en) A coupling device of steel reinforcing
JP2713650B2 (en) Manufacturing method of prestressed steel plate concrete pipe
CN218562595U (en) Assembled concrete assembly
CN220117463U (en) Buried part positioning device
KR102184018B1 (en) Rebar coupler
JP3839025B2 (en) PC steel bar connection structure and prestressed concrete structure
JPS648147B2 (en)

Legal Events

Date Code Title Description
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant