KR20000049373A - Forming method for sheet metal - Google Patents

Forming method for sheet metal Download PDF

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Publication number
KR20000049373A
KR20000049373A KR1020000003414A KR20000003414A KR20000049373A KR 20000049373 A KR20000049373 A KR 20000049373A KR 1020000003414 A KR1020000003414 A KR 1020000003414A KR 20000003414 A KR20000003414 A KR 20000003414A KR 20000049373 A KR20000049373 A KR 20000049373A
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South Korea
Prior art keywords
sheet metal
metal disc
cup
disc
container
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KR1020000003414A
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Korean (ko)
Inventor
송석준
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송석준
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Priority to KR1020000003414A priority Critical patent/KR20000049373A/en
Publication of KR20000049373A publication Critical patent/KR20000049373A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20Deep-drawing
    • B21D22/201Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/02Punching blanks or articles with or without obtaining scrap; Notching

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: A method is provided to mold a sheet metal disc produced to a completed product and to offer convenience. CONSTITUTION: An elongation extending according to the direction in a post-process in a blanking work is calculated previously. A sheet metal disc(1) is prepared having different radius according to the direction excepting the extended length. The prepared disc is placed on a die and extruded after being punched by an upper punch. The disc is produced as a container having a bottom or a cup by a drawing method. The processed piece(2) produced by the drawing method is used directly as a cup or a container according to the elimination of wave forms(24) on the upper part of the cup or the container.

Description

판금원판을 성형하는 방법 {FORMING METHOD FOR SHEET METAL}How to Form Sheet Metal Disc {FORMING METHOD FOR SHEET METAL}

본 발명은 판금원판을 성형하는 방법에 관한 것으로서, 더 상세하게는 블랭킹 공정에 의해 형성된 원형에 가까운 편평한 판금원판을 컵모양 또는 바닥이 있는 용기로 압출하는 드로잉 가공법에 의해 성형하는 판금원판을 성형하는 방법에 관한 것이다.The present invention relates to a method for forming a sheet metal disk, and more particularly, to form a sheet metal disk formed by a drawing processing method of extruding a flat sheet metal disk close to a circle formed by a blanking process into a cup or a bottomed container. It is about a method.

일반적으로 종래에 편평한 철판을 컵모양 또는 바닥이 있는 용기로 제조하는 방법은 블랭킹 공정에서 철판을 진원의 판금원판으로 만든 다음, 진원의 판금 원판을 다이에 올려놓고 펀치로 펀칭하여 압출하는 드로잉 가공공정으로 이루어졌다.In general, a method of manufacturing a flat iron plate into a cup-shaped or bottomed container is a drawing processing process in which the iron plate is made of a round sheet metal disc in a blanking process, and then the original sheet metal plate is placed on a die and punched with a punch and extruded. Was done.

이를 첨부된 도면 도 1 내지 도 2를 참고로 하여 설명하면 다음과 같다.This will be described with reference to the accompanying drawings, FIGS. 1 to 2 as follows.

도 1은 종래 성형방법에 의해 제조된 제품의 공정별 도면이고, 도 2는 일반적인 드로잉 가공장치의 정단면도이다.1 is a process-specific view of a product manufactured by a conventional molding method, Figure 2 is a front sectional view of a general drawing processing apparatus.

먼저 펀치와 다이를 이용하여 철판을 블랭킹(blanking) 공정에서 반지름이 동일한 진원(眞圓)의 판금원판(1)으로 만든다.First, a punch and a die are used to make the iron sheet into a round sheet metal disc 1 having the same radius in the blanking process.

진원의 판금원판(1)을 도 2의 다이(18)에 올려놓고 상부의 펀치(14)를 아래로 펀칭하여 압출하는 드로잉(drawing) 가공법으로 컵모양이나 바닥이 있는 용기를 제조한다.A cup-shaped or bottomed container is manufactured by a drawing processing method in which a round sheet metal disc 1 is placed on the die 18 of FIG. 2 and the upper punch 14 is punched down and extruded.

드로잉 가공법에 의해 제조된 가공품(2)은 컵모양이나 바닥이 있는 용기의 상부에 파형(24)이 생성되어 있어 컵이나 용기로 사용할 수 없게 된다.The workpiece 2 produced by the drawing processing method has a wave form 24 formed on the top of a cup-shaped or bottomed container, and thus cannot be used as a cup or a container.

따라서 선반으로 절삭구를 사용하여 가공품(2)의 파형(24)을 절삭하는 선삭 공정을 거친 후에야 비로소 완제품(3)이 된다.Therefore, the finished product 3 is not formed until the turning process of cutting the corrugation 24 of the workpiece 2 using a cutting tool with a lathe.

이렇게 드로잉 가공 후에 파형(24)이 생성되는 원인은 판금원판(1)의 제조 전단계인 철판 제조과정에서 압연할 때 방향성 결이 형성되고 이 방향성 결에 의해 진원의 판금원판(1)을 드로잉 가공시에 판금원판(1)이 늘어나 가공품(2)이 제조되기 때문이다.The reason why the waveform 24 is generated after the drawing process is that a directional grain is formed when rolling in the steel sheet manufacturing process, which is a pre-manufacturing sheet metal sheet 1, and the oriented grain is used during the drawing process. This is because the sheet metal disc 1 is stretched to manufacture the workpiece 2.

즉 철판 제조과정에서 냉간 압연할 때 방향에 따른 수축률이 다르게 되고 판금원판(1)을 드로잉 가공시에 방향에 따라 늘어나는 비율인 신율(伸率)이 다르게 되어 파형(24)이 생성되는 것이다.In other words, when the cold rolling in the manufacturing process of the steel sheet, the shrinkage in accordance with the direction is different and the elongation, which is a rate that increases according to the direction when the sheet metal master 1 is drawn, is different, the waveform 24 is generated.

도 2에서 미설명 부호 10은 펀치 홀더(12)의 자루인 섕크, 12는 펀치(14)를 잡아주는 펀치 홀더, 16은 위치를 결정하는 플레이트, 20은 다이(18)를 잡아주는 다이 홀더, 22는 스프링이다.In FIG. 2, reference numeral 10 denotes a shank which is a bag of the punch holder 12, 12 is a punch holder for holding the punch 14, 16 is a plate for positioning, 20 is a die holder for holding the die 18, 22 is a spring.

진원의 판금원판(1)을 성형하는 종래의 이러한 제조방법은 가공품(2)의 파형(24)을 절삭하는 선삭 성형을 해야 하는 번거로운 작업을 해야 되고 불필요한 선삭 공정이 추가되며, 선삭 공정시 절삭되는 파형(24)만큼 버려지기 때문에 원재료가 낭비되는 문제점이 있었다.This conventional manufacturing method of forming the round sheet metal disc 1 requires the cumbersome work of turning forming to cut the corrugation 24 of the workpiece 2, adds unnecessary turning process, and is cut during the turning process. Since it is discarded as much as the waveform 24, there is a problem that raw materials are wasted.

본 발명은 상술한 문제점을 해결하기 위하여 안출된 것으로서, 방향에 따라 늘어나는 신율을 감안하여 블랭킹 공정에서 판금원판을 제조한 후 드로잉 가공에 의해 압출함으로써 가공품에 파형이 생성되지 않아 원재료의 낭비를 줄일 수 있고 선삭 공정이 필요없으며 선삭 성형을 해야 하는 번거로운 작업을 할 필요가 없는 편리성과 함께 가공품이 곧 완제품이 되는 판금원판을 성형하는 방법을 제공하는데 그 목적이 있는 것이다.The present invention has been made to solve the above-described problems, in consideration of the elongation that increases along the direction to produce a sheet metal disc in the blanking process and then extruding by drawing processing to reduce the waste of the raw material as the waveform is not generated in the workpiece Its purpose is to provide a method for forming sheet metal discs, in which the workpiece is a finished product, with the convenience that the turning process is not necessary and the cumbersome work of turning forming is not necessary.

상술한 목적을 달성하기 위하여, 본 발명은 후공정인 드로잉 가공공정에서 방향에 따라 늘어나는 신율을 감안하여 블랭킹 공정시에 방향에 따라 다른 길이를 갖는 반지름의 판금원판을 제조한 후, 판금원판을 다이에 올려놓고 펀치로 펀칭하여 압출하는 드로잉 가공공정이 행해짐을 특징으로 하는 판금원판을 성형하는 방법을 제공하고자 한다.In order to achieve the above object, the present invention, in consideration of the elongation that increases in the direction in the drawing processing step, which is a post-process, after manufacturing a sheet metal disc of a radius having a different length depending on the direction during the blanking step, die sheet metal disc It is to provide a method for forming a sheet metal disc, characterized in that the drawing processing process is carried out by punching with a punch and extruded.

도 1은 종래 성형방법에 의해 제조된 제품의 공정별 도면,1 is a process-specific drawing of a product manufactured by a conventional molding method,

도 2는 일반적인 드로잉 가공장치의 정단면도,2 is a front sectional view of a general drawing processing apparatus,

도 3은 본 발명에 의해 제조된 제품의 공정별 도면.Figure 3 is a process-specific diagram of the product produced by the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the code | symbol about the principal part of drawing>

1: 판금원판, 2: 가공품, 3:완제품. 10: 섕크, 12: 펀치 홀더, 14: 펀치, 16: 플레이트, 18: 다이, 20: 다이 홀더, 22: 스프링, 24: 파형.1: sheet metal disc, 2: workpiece, 3: finished product. 10: shank, 12: punch holder, 14: punch, 16: plate, 18: die, 20: die holder, 22: spring, 24: corrugation.

이하 본 발명을 첨부된 도면 도 2 내지 도 3을 참고로 하여 설명하면 다음과 같다.Hereinafter, the present invention will be described with reference to FIGS. 2 to 3.

도 3은 본 발명에 의해 제조된 제품의 공정별 도면이다.3 is a process-specific drawing of the product produced by the present invention.

먼저 본 발명의 기본적인 구성을 살펴보면, 후공정인 드로잉 가공공정에서 방향에 따라 늘어나는 신율을 감안하여 블랭킹 공정시에 방향에 따라 다른 길이를 갖는 반지름의 판금원판(1)을 제조한 후, 판금원판(1)을 다이(18)에 올려놓고 펀치(14)로 펀칭하여 압출하는 드로잉 가공공정이 행해짐을 특징으로 한다.Looking at the basic configuration of the present invention first, in consideration of the elongation that increases in the direction in the drawing processing process, which is a post-process, after manufacturing the sheet metal disc 1 of a radius having a different length depending on the direction during the blanking process, the sheet metal disc ( It is characterized in that a drawing processing step of putting 1) on the die 18 and punching it out with a punch 14 is performed.

본 발명을 상세히 설명하면, 본 발명은 드로잉 가공공정시에 늘어나는 신율이 방향에 따라 다르되 동일 방향에서는 동일한 비율로 늘어난다는 사실에 착안하여 드로잉 가공공정 전공정인 블랭킹 공정시에 늘어나는 길이만큼 미리 제하고 판금원판(1)을 제조하는 것이다.When the present invention is described in detail, the present invention focuses on the fact that the elongation at the time of drawing processing varies depending on the direction but increases at the same rate in the same direction, and thus the preliminary length of the elongation at the time of the blanking process, which is a step before the drawing processing, is removed. The sheet metal disc 1 is manufactured.

블랭킹 작업을 행할 때에 후공정에서 방향에 따라 늘어나는 신율을 미리 계산하여 늘어나는 길이를 제하고 판금원판(1)을 제조하면 방향에 따라 다른 길이를 갖는 반지름의 판금원판(1)이 제조된다.When the blanking operation is performed, the elongation that is elongated along the direction is calculated in advance in a later step to remove the elongated length, and then the sheet metal disc 1 is manufactured to produce a radiused sheet metal disc 1 having a different length depending on the direction.

이렇게 제조된 판금원판(1)을 도 2에서 처럼 다이(18)에 올려놓고 상부의 펀치(14)를 아래로 펀칭하여 압출하는 드로잉(drawing) 가공법에 컵모양이나 바닥이 있는 용기가 제조된다.A cup-shaped or bottomed container is manufactured in a drawing process in which the sheet metal disc 1 thus prepared is placed on the die 18 as shown in FIG. 2, and the upper punch 14 is punched down and extruded.

드로잉 가공시에 방향에 따라 길이가 서로 다르게 늘어나 상기 드로잉 가공에 의해 제조된 가공품(2)은 컵모양이나 바닥이 있는 용기의 상부에 파형(24)이 생성되지 않아 컵이나 용기로 바로 사용할 수 있기 때문에 가공품(2)이 곧 완제품(3)이 되는 것이다.The length of the workpiece 2 produced by the drawing process is increased differently depending on the direction during the drawing process can be used directly as a cup or a container because the waveform 24 is not generated on the top of the cup-shaped or bottomed container. Because of this, the workpiece 2 becomes the finished product 3 soon.

따라서 선반으로 절삭구를 사용하여 가공품(2)의 파형(24)을 절삭하는 선삭 공정을 거칠 필요가 없어 선삭 공정이 생략되는 공수가 절감되며 불필요한 선삭 성형을 할 필요가 없어 편리한 것이다.Therefore, there is no need to go through the turning process of cutting the waveform 24 of the workpiece 2 by using a cutting tool on the lathe, which saves the labor of eliminating the turning process and does not need unnecessary turning molding.

또한 선삭 공정시 절삭되어 버려지는 파형(24)이 없어 그 만큼 원재료의 낭비를 줄 일 수 있는 것이다.In addition, there is no waveform 24 that is cut during the turning process, thereby reducing the waste of raw materials.

이상에서 살펴본 바와 같이, 본 발명은 방향에 따라 늘어나는 신율을 감안하여 블랭킹 공정에서 판금원판을 제조한 후 드로잉 가공에 의해 압출함으로써 가공품에 파형이 생성되지 않아 원재료의 낭비를 줄일 수 있고 선삭 공정이 필요없으며 선삭 성형을 해야 하는 번거로운 작업을 할 필요가 없는 편리성과 함께 가공품이 곧 완제품이 되는 유용한 발명인 것이다.As described above, in view of the elongation that increases along the direction, the present invention manufactures a sheet metal disc in a blanking process and then extrudes it by drawing, so that no waveform is generated in the workpiece, thereby reducing waste of raw materials and requiring a turning process. It is a useful invention that the finished product is a finished product with the convenience that does not need to do the complicated work of turning molding.

Claims (1)

후공정인 드로잉 가공공정에서 방향에 따라 늘어나는 신율을 감안하여 블랭킹 공정시에 방향에 따라 다른 길이를 갖는 반지름의 판금원판(1)을 제조한 후, 판금원판(1)을 다이(18)에 올려놓고 펀치(14)로 펀칭하여 압출하는 드로잉 가공공정이 행해짐을 특징으로 하는 판금원판을 성형하는 방법.In consideration of the elongation that increases with direction in the drawing process, which is a post-process, the sheet metal disc 1 of a radius having a length different according to the direction is manufactured in the blanking step, and then the sheet metal disc 1 is placed on the die 18. And a drawing processing step of punching out and punching with a punch (14) is carried out.
KR1020000003414A 2000-01-25 2000-01-25 Forming method for sheet metal KR20000049373A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030084527A (en) * 2002-04-25 2003-11-01 박윤상 a manufacture method of light case

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030084527A (en) * 2002-04-25 2003-11-01 박윤상 a manufacture method of light case

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