KR100292648B1 - forming method of clamp for a scaffold - Google Patents

forming method of clamp for a scaffold Download PDF

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Publication number
KR100292648B1
KR100292648B1 KR1019990007637A KR19990007637A KR100292648B1 KR 100292648 B1 KR100292648 B1 KR 100292648B1 KR 1019990007637 A KR1019990007637 A KR 1019990007637A KR 19990007637 A KR19990007637 A KR 19990007637A KR 100292648 B1 KR100292648 B1 KR 100292648B1
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KR
South Korea
Prior art keywords
iron plate
blanking
steel plate
clamp
bodies
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KR1019990007637A
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Korean (ko)
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KR19990045998A (en
Inventor
이호윤
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이호윤
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Priority to KR1019990007637A priority Critical patent/KR100292648B1/en
Publication of KR19990045998A publication Critical patent/KR19990045998A/en
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Publication of KR100292648B1 publication Critical patent/KR100292648B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/36—Making other particular articles clips, clamps, or like fastening or attaching devices, e.g. for electric installation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/28—Associations of cutting devices therewith
    • B21D43/287—Devices for handling sheet or strip material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Punching Or Piercing (AREA)

Abstract

PURPOSE: A method for manufacturing clamps for staging is provided which minimizes generation of scrap by processing the steel plate without leaving margins on both sides of the steel plate when continuously manufacturing bodies and covers required in the clamps for staging in the piercing and blanking processes. CONSTITUTION: In manufacturing clamps for staging by a method comprising the processes of continuously cutting sizes of bodies(11a) and covers(12a) required in products by punching and blanking a steel plate(B) having a certain width using a press die in the piercing and blanking processes, and forming the bodies(11a) and covers(12a) into a three-dimensional shape by drawing each of the bodies(11a) and the covers(12a), the method for manufacturing clamps for staging is characterized in that the steel plate is manufactured so that there are not any margins on both sides of the steel plate(B) for the bodies(11a) by conforming a width of the steel plate(B) supplied to the press die to a length of the body(11a), wherein both ends of the bodies(11a) is formed in a straight line so that the total length is conformable with the side line of the steel plate(B).

Description

비계용 클램프의 가공방법{forming method of clamp for a scaffold}Forming method of clamp for a scaffold

본 발명은 일정 폭으로 된 철판을 피어싱공정과 블랭킹공정에서 비계용 클램프를 가공할 때 스크랩이 적게 발생되도록 히는 비계용 클램프의 가공방법에 관한 것이다.The present invention relates to a method for processing a scaffolding clamp that causes less scrap to be generated when processing a clamp for scaffolding in a piercing process and a blanking process.

비계용 클램프는 주로 건축공사를 할 때 높은 곳에서 작업을 할 수 있도록 하기 위하여 파이프(단관)를 가로세로 등으로 얽어서 비계를 설치할 때 사용되는 것이다.Scaffolding clamps are mainly used to install scaffolds by tangling pipes (single tubes) in length and width to enable work in high places during construction work.

도 1에 도시한 바와같이, 완성된 비계용 클램프(10)는 2쌍의 몸통(11)과 덮개(12)로 구성하여 볼조인트로 체결할 수 있도록 하고 있는데, 이러한 비계용 클램프는 산업안전규격에서 정한 제품의 두께, 인장강도, 재질 등의 요건을 갖추어야 하는 바, 통상적으로 두께가 3mm인 철판(A)이 여러 공정을 거친후에 비계용 클램프(10)를 완성하게 된다.As shown in FIG. 1, the completed scaffold clamp 10 is composed of two pairs of bodies 11 and a cover 12 to be fastened by a ball joint, and the scaffold clamp is an industrial safety standard. The thickness, tensile strength, material, etc. of the product specified in the bar to meet the requirements, typically 3 mm thick iron plate (A) after the various processes to complete the scaffold clamp 10.

일반적으로 비계용 클램프(10)를 제조하기 위하여 종래에는 폭이 126mm인 철판(A)을 마련하게 되고, 이 철판(A)을 피어싱공정과 블랭킹공정에서 펀칭가공 및 블랭킹가공하여 제품에 소요되는 몸통(11a)과 덮개(12a)의 치수를 절단하여 분리시킨 후, 각각의 몸통(11a)과 덮개(12a)를 드로잉가공하여 입체적인 형태로 성형한 다음, 몸통(11a)과 덮개(12a)를 드로잉가공후 도금 및 조립하여 클램프(10)로 완성된다. 그리고 상기한 철판(A)을 펀칭가공 및 블랭킹가공을 할 때에는 통상적으로 프레스금형으로 몸통(11a)과 덮개(12a)를 제품의 치수에 맞게 생산하게 된다.In general, in order to manufacture the scaffold clamp 10, a conventional iron plate (A) having a width of 126 mm is provided, and the iron plate (A) is punched and blanked in a piercing process and a blanking process, and the body required for the product. After cutting and separating the dimensions of the 11a and the cover 12a, the respective bodies 11a and the cover 12a are drawn and molded into a three-dimensional shape, and then the body 11a and the cover 12a are drawn. After processing, plating and assembly are completed with the clamp 10. When punching and blanking the iron plate (A), the body 11a and the cover 12a are generally produced in a press mold according to the size of the product.

다시말해서, 상기한 프레스금형은 통상적인 프레스에 장착하여 피어싱공정과 블랭킹공정에 따른 펀칭가공과 블랭킹가공을 동시에 수행하게 된다.In other words, the press mold is mounted on a conventional press to simultaneously perform a punching process and a blanking process according to a piercing process and a blanking process.

도 2는 종래의 피어싱공정과 블랭킹공정을 나타낸 도면으로서, 종래에 프레스금형으로 철판(A)을 가공할 때 덮개(12a)에 비하여 길이가 큰 몸통(11a)을 가공할 면을 기준으로 철판(A)의 양측에서 약 5mm씩 마진(A1)을 두고 블랭킹하기 때문에 마진에 의한 스크랩 발생량이 제품생산량의 1/10정도가 되고, 치수가 큰 126mm의 철판(A)을 사용하면서도 철판(A)의 단위면적당 클램프(10)의 생산량이 저하되는 폐단이 있었다.FIG. 2 is a view illustrating a conventional piercing process and a blanking process, and when the iron plate A is conventionally processed into a press mold, the steel plate 11a having a larger length than the cover 12a is processed on the basis of the steel plate ( Since blanking is carried out with margins A1 of about 5 mm on both sides of A), the amount of scrap generated by the margin is about 1/10 of the product yield, and the size of the steel sheet (A) There was a closed end where the output of the clamp 10 per unit area decreased.

또한, 종래에는 몸통(11a)의 양단 양쪽에 형성되는 펀칭홀(21)부위가 반원형으로 돌출되게 설계함으로 철판(A)의 폭과 몸통(11a) 가공면 사이에 마진을 없앨경우에 블랭킹부위가 금형에 씹히게 되는 문제점도 있었다.In addition, conventionally, the punching holes 21 formed at both ends of the body 11a are designed to protrude in a semicircular shape so that the blanking area is removed when the margin is eliminated between the width of the iron plate A and the processing surface of the body 11a. There was also a problem with the mold being chewed.

본 발명은 이러한 종래의 단점을 해소하기 위한 것으로, 피어싱공정과 블랭킹공정에서 철판을 펀칭가공 및 블랭킹가공에 의하여 비계용 클램프에 소요되는 몸통과 덮개를 연속적으로 제작할 때 철판의 양측에 마진을 두지 않고 가공함으로서 스크랩이 발생되는 것을 최소화할 수 있도록 하는데 그 목적이 있다.The present invention is to solve the above disadvantages, without continuously making a margin on both sides of the iron plate when the body and cover required for the scaffold clamp by punching and blanking the iron plate in the piercing process and the blanking process The purpose is to minimize the occurrence of scrap by processing.

도 1은 일반적인 비계용 클램프의 사용상태 사시도.1 is a perspective view of a state of use of a general scaffolding clamp.

도 2는 종래의 피어싱공정과 블랭킹공정을 설명하기 위한 도면.2 is a view for explaining a conventional piercing process and the blanking process.

도 3은 본 발명에 따른 피어싱공정과 블랭킹공정을 설명하기 위한 도면.3 is a view for explaining a piercing process and a blanking process according to the present invention.

도 4는 본 발명의 피어싱공정과 블랭킹공정에서 가공된 철판을 나타낸 도면.Figure 4 is a view showing the iron plate processed in the piercing process and the blanking process of the present invention.

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

A,B; 철판 A1; 마진 10; 클램프A, B; Iron plate A1; Margin 10; clamp

11,11a; 몸통 12,12a; 덮개 20; 금형11,11a; Torso 12,12a; Cover 20; mold

21; 펀칭홀 22; 블랭킹홀 23; 가이드롤21; Punching holes 22; Blanking holes 23; Guide roll

본 발명은 피어싱공정과 블랭킹공정에서 프레스금형(20)으로 일정 폭으로 된 철판(B)을 펀칭가공 및 블랭킹가공하여 제품에 소요되는 몸통(11a)과 덮개(12a)의 치수를 연속적으로 절단하고, 각각의 몸통(11a)과 덮개(12a)는 드로잉가공하여 입체적인 형태로 성형하는 방법으로 비계용 클램프(10)를 제조함에 있어서, 상기 프레스금형(20)으로 공급되는 상기 철판(B)의 폭이 상기 몸통(11a)의 길이와 일치되도록 함으로서 상기 몸통(11a)에 대하여 상기 철판(B)의 양측에 마진이 없이 제조되는 것에 그 특징이 있다.The present invention punching and blanking the iron plate (B) of a predetermined width into the press mold 20 in the piercing process and the blanking process to continuously cut the dimensions of the body (11a) and the cover (12a) required for the product and Each of the body 11a and the cover 12a are drawn and processed into a three-dimensional shape to manufacture the clamp 10 for the scaffold, the width of the iron plate (B) supplied to the press mold 20 It is characterized by being made without a margin on both sides of the iron plate (B) relative to the body (11a) by matching the length of the body (11a).

이하에서, 본 발명의 작용을 상세히 설명하면 다음과 같다.Hereinafter, the operation of the present invention will be described in detail.

도 3은 피어싱공정과 블랭킹공정을 수행하기 위하여 프레스금형(20)으로 철판(B)을 가공하는 방법을 나타낸 것이다.Figure 3 shows a method of processing the iron plate (B) with the press mold 20 to perform the piercing process and the blanking process.

도 3에 도시한 바와같이, 프레스에 장착되는 금형(20)의 하형에는 일정간격으로 가이드롤(23)이 설치되어 철판(B)을 가이드하게 되고, 이들 가이드롤(23) 사이에는 몸통(11a)과 덮개(12a)를 가공하기 위한 펀칭홀(21)과 블랭킹홀(22)이 형성되어 있으며, 철판(B)은 가이드롤(23) 사이로 1피치씩 이송되면서 펀칭가공과 블랭킹가공이 동시에 그리고 연속적으로 이루어진다.As shown in FIG. 3, the lower die of the mold 20 mounted on the press is provided with a guide roll 23 at a predetermined interval to guide the iron plate B, and the body 11a is disposed between the guide rolls 23. ) And a punching hole 21 and a blanking hole 22 for processing the cover 12a are formed, and the iron plate B is transferred by one pitch between the guide rolls 23, and the punching processing and the blanking processing simultaneously and It is done continuously.

이때, 프레스금형(20)으로 공급되는 철판(B)의 폭을 제품의 치수, 즉 가공된 몸통(11a)의 길이와 일치되도록 함으로서 철판(B)에 마진을 두지 않는다.At this time, the width of the iron plate (B) supplied to the press mold 20 to match the dimensions of the product, that is, the length of the processed body (11a) does not place a margin on the iron plate (B).

예시한 철판(B)의 폭은 110mm이고, 철판(B)을 블랭킹가공 하면 몸통(11a)의 측단부만 전단되고 몸통(11a)의 양단부는 자연적으로 철판(B)의 측선과 일치하게 된다. 부언하여 몸통(11a)을 가공하기 위하여 금형(20)에 구비되는 블랭킹홀(22)의 길이를 철판(B)의 폭보다 약간 크게 형성하는 것이 블랭킹가공시에 전단작용이 잘 되고 철판(B)이 씹히는 것을 방지할 수 있다.The width of the illustrated iron plate (B) is 110mm, blanking the iron plate (B) is sheared only the side end of the body (11a) and both ends of the body (11a) is naturally coincident with the side line of the iron plate (B). In addition, forming the length of the blanking hole 22 provided in the mold 20 to be slightly larger than the width of the iron plate B in order to process the body 11a is well sheared during the blanking process and the iron plate B Can prevent this chewing.

한편, 덮개(12a)는 몸통(11a)의 길이보다 작게 형성되므로 철판(B)의 안쪽에서 블랭킹되며, 철판(B)의 각 가공위치는 펀칭가공되어 펀칭홀(21)이 형성된 다음에 블랭킹가공되어 가공치수별로 몸통(11a)과 덮개(12a)가 분리된다.On the other hand, since the cover 12a is formed smaller than the length of the body (11a) is blanked on the inside of the iron plate (B), each machining position of the iron plate (B) is punched to form a punching hole 21, then blanking processing The body 11a and the cover 12a are separated by processing dimensions.

결국, 도 4에 도시한 바와같이, 프레스금형(20)으로 블랭킹된 몸통(11a)은 양측부는 금형(20)의 블랭킹홀(22)의 치수와 형태에 의하여 좌우 대칭적으로 전단되고 양단부는 전단작용 없이 직선적으로 제조된다. 그리고 스크랩은 덮개(12a)의 주변에서만 생기고 처리하기 좋게 토막으로 탈락된다.As a result, as shown in FIG. 4, the body 11a blanked by the press die 20 is symmetrically sheared on both sides by the size and shape of the blanking hole 22 of the mold 20, and both ends are sheared. It is produced linearly without action. And the scrap is produced only in the periphery of the lid 12a and dropped into chips for processing.

이와같이 본 발명은 철판(B)의 양측에 마진을 두지 않게 됨으로 종래에 비하여 비계용 클램프(10)의 제조에 소요되는 철판(B)의 폭이 기존의 것에 비하여 10mm이상 작은 것을 사용할 수 있다. 따라서, 프레스금형(20)으로 펀칭가공 및 블랭킹가공시에 스크랩이 발생되는 것을 최소화할 수 있고 고가의 철판(B)이 낭비하지 않고 철판(B)의 단위면적당 클램프(10)의 생산량을 증대시킬 수 있는 효과가 있다.As described above, the present invention does not have a margin on both sides of the iron plate B, so that the width of the iron plate B required for the manufacture of the clamp 10 for the scaffold 10 is smaller than that of the conventional 10 mm. Therefore, it is possible to minimize the occurrence of scrap during punching and blanking with the press mold 20, and to increase the output of the clamp 10 per unit area of the iron plate B without wasting expensive steel plate B. It can be effective.

Claims (2)

피어싱공정과 블랭킹공정에서 프레스금형을 이용하여 일정 폭으로 된 철판(B)을 펀칭가공 및 블랭킹가공하여 제품에 소요되는 몸통(11a)과 덮개(12a)의 치수를 연속적으로 절단하고, 각각의 몸통(11a)과 덮개(12a)는 드로잉가공하여 입체적인 형태로 성형하는 방법으로 비계용 클램프(10)를 제조함에 있어서,In the piercing process and the blanking process, punching and blanking the iron plate (B) having a predetermined width using a press mold is continuously cut the dimensions of the body (11a) and the cover (12a) required for the product, each body In manufacturing the scaffold clamp 10 by the method 11a and the cover 12a by drawing and molding into a three-dimensional shape, 상기 프레스금형으로 공급되는 상기 철판(B)의 폭이 상기 몸통(11a)의 길이와 일치되도록 함으로서 상기 몸통(11a)에 대하여 상기 철판(B)의 양측에 마진이 없이 제조되는 것을 특징으로 하는 비계용 클램프의 가공방법.Scaffolding characterized in that the width of the iron plate (B) supplied to the press mold is made without margin on both sides of the iron plate (B) relative to the body (11a) by matching the length of the body (11a) Process of clamp 제1항에 있어서, 상기 몸통(11a)부의 양단이 직선으로 형성되어 전체길이가 상기 철판(B)의 측선과 일치되도록 한 것을 특징으로 하는 비계용 클램프의 가공방법.The method of processing a clamp for a scaffold according to claim 1, wherein both ends of the trunk portion (11a) are formed in a straight line so that the overall length thereof matches the side line of the iron plate (B).
KR1019990007637A 1999-03-09 1999-03-09 forming method of clamp for a scaffold KR100292648B1 (en)

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