KR20040027526A - A piercing method of metallograph - Google Patents

A piercing method of metallograph Download PDF

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Publication number
KR20040027526A
KR20040027526A KR1020040008229A KR20040008229A KR20040027526A KR 20040027526 A KR20040027526 A KR 20040027526A KR 1020040008229 A KR1020040008229 A KR 1020040008229A KR 20040008229 A KR20040008229 A KR 20040008229A KR 20040027526 A KR20040027526 A KR 20040027526A
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South Korea
Prior art keywords
piercing
state
burr
die
semi
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KR1020040008229A
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Korean (ko)
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최병덕
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(주)명진
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Priority to KR1020040008229A priority Critical patent/KR20040027526A/en
Publication of KR20040027526A publication Critical patent/KR20040027526A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/08—Coating on the layer surface on wood layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2479/00—Furniture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Punching Or Piercing (AREA)

Abstract

PURPOSE: A piercing method of metal sheet is provided which absolutely prevents burr from generating in the state that piercing is performed by further less shearing force (stress). CONSTITUTION: In an ordinary piercing method for performing piercing process by operating a press between an upper punch (upper die(210)) and a lower die(220), thereby cutting the striper in the state that a stripper(200) is supplied to the press, the piercing method of metal sheet is characterized in that piercing treatment is performed at a position of the semi-blanking process through the post-process after first performing a semi-blanking process of shearing the metal workpiece in the state that burr(10) corresponding to 1/3 or more of the minimum thickness is adhered to a metal workpiece with 100% of shearing surface being not formed between a metal workpiece part(110) to be cut before the piercing treatment process and a workpiece part(120) to be used.

Description

금속판의 피어싱 방법{A piercing method of metallograph}Piercing method of metal plate {A piercing method of metallograph}

본 발명은 상,하 금형의 프레스작동으로 필요한 부분만 남기도 절단해내는 금속판 피어싱 가공방법을 대폭 개선하여 피어싱 후 그 절단된 자리의 전, 후면에버(burr)가 전혀 발생되지 않아 종래와 같이 버 제거에 필요한 후 처리공정을 절감할 수 있음은 물론 보다 깔끔한 외관성 및 정밀성으로 품질향상을 도모할 수 있고, 나아가 사용되는 공구(금형, 다이 등)의 수명을 반영구적으로 유지할 수 있는 등 새로운 금속판 피어싱 방법을 제공코자하는 것이다.The present invention greatly improves the metal plate piercing processing method for cutting only the necessary parts by pressing the upper and lower molds, so that no burrs before and after the piercing is generated and burrs are not generated at all. New metal plate piercing methods, such as reducing the post-treatment process required for the process, improving quality with a cleaner appearance and precision, and further maintaining the life of tools (die, die, etc.) used semi-permanently. To provide.

금속판 피어싱 방법은 도 1에서 도시된 바와 같이 하금형의 날에 상금형의 날이 하강할 때 그 날간 주어진 전단력에 의해 금속판 중 필요한 부분은 남기고 필요치 않는 부분은 절단/제거하는 가공행위로서,As shown in FIG. 1, the metal plate piercing method is a machining operation in which when a blade of an upper die descends on a blade of a lower die, cutting / removing an unneeded portion of the metal plate by the shear force given during the blade.

이는 금속 평판상에서 이루어지는 경우는 통상 펀칭이라 하지만 일부분 절곡된 상태로 평판이 아닌 상태의 금속판에 후 공정으로 이루어지는 것에 대해 관련업계에서는 피어싱이라 통용된다. 이하, 본원에서는 편의상 피어싱이라 칭하지만 일반적인 펀칭행위까지 포함되는 것은 물론이다.This is commonly referred to as punching in the related art, but it is commonly referred to as piercing in the related art regarding the post-processing of the metal plate in a state of being partially bent and not in the flat state. Hereinafter, although referred to herein as a piercing for convenience, a general punching act is also included.

이러한 종래의 피어싱 상술된 바와 같이 전단이 이루어질 때 받치고 있는 하금형날에 상금형이 아래로 하강하기 때문에 절단된 상태의 하측면에 재질, 전단력, 날간 간격(clearance), 금형날 상태 등의 조건에 따라 약간의 차이는 있지만 날카로운 버(burr)가 발생할 수밖에 없다.This conventional piercing, as described above, because the upper die is lowered to the lower die supporting when the shear is made to the conditions such as the material, shear force, clearance (clearance), mold edge state, etc. There is a slight difference, but a sharp burr is inevitable.

이러한 버는 깔끔한 외관상태를 해쳐 상품성을 저하시킴은 물론 취급시 작업자의 안전까지 유발시킬 수 있을 뿐만 아니라 특히, 정밀제품의 경우 큰 하자로 나타날 수 있다.Such burrs not only deteriorate the product appearance by degrading the neat appearance, but also cause the safety of the worker during handling, and in particular, the precision product may appear as a large defect.

때문에 버제거의 필요성이 있는 제품의 경우는 별도의 후처리공정을 들여 일일이 버를 제거하고 있는데, 이 또한 많은 공정 및 시간적 낭비는 물론 완전제거가 불가능하여 잔존 버로 인하 품질저하는 여전하였다.Therefore, in the case of products that need to remove burrs, burrs are removed by separate post-treatment process. This process is also a waste of many processes and time, and it is impossible to completely remove burrs.

즉, 버의 발생량은 상술된 바와 같이 상,하 금형날의 마모상태 또는 금속제의 재질적 특성, 전단력, 날간 간격(clearance) 등에 따라서 다양하게 나타날 수 있는 데 반해 버 부분을 다져주는 R량은 버 제거용 금형에 지정되어 항상 일정함으로 일정량 이상의 버가 발생하면 버 제거 후에도 여전히 잔존 버가 남는 문제가 있다.That is, the amount of burr generated may vary depending on the wear state of the upper and lower mold blades or the material properties of the metal, the shear force, the clearance between the blades, and the like. If a certain amount of burrs is generated because it is always assigned to the mold for removal, a residual burr still remains after burrs are removed.

뿐만 아니라 위와 같은 버 제거 공정은 버가 발생되는 부분의 파단면을 단조형식의 강압하여 일정한 R을 만들기 때문에 그 추가된 강압력에 인해 부분적인 소재변형요소가 발생하고, 이는 치수변화로 이어져 특히, 정밀성을 요하는 제품의 경우 일일이 2, 3중으로 치수관리를 해야하는 문제점까지 있다.In addition, since the burr removal process as described above makes a constant R by forging the fractured surface of the burr part, the additional deformation force causes partial material deformation, which leads to dimensional change. In the case of products that require precision, there is a problem of having to manage the dimensions in two or three times.

그리고 피어싱시 금속판 소재두께에 가해지는 전단력 전체가 상, 하 금형날(펀치, 다이)에만 집중됨으로 날의 마모가 심해 수시로 수리 또는 교체를 해야하는 문제가 있어 고가인 공구(펀치, 다이)의 수명이 아주 짧을 뿐 아니라 수리 및 교체시 발생되는 낭비시간 또한 무시할 수 없었다.In addition, as the entire shear force applied to the thickness of the metal sheet during piercing is concentrated only on the upper and lower mold blades (punch and die), the wear of the blade is severe and there is a problem of frequent repair or replacement. Not only was it very short, it was also negligible to waste time in repair and replacement.

이에 본 고안에서는 상기한 제반 문제점을 일소하기 위해 창안한 것으로서, 보다 적은 전단력(응력)으로 피어싱이 이루러지는 가운데에서도 버가 절대 발생되지 않도록 하는데 주안점을 두고 그 기술적 과제로서 완성한 것이다.Therefore, the present invention was devised to eliminate the above problems, and completed as a technical problem with the focus on never generating burrs in the middle of piercing with less shear force (stress).

도 1은 종래 피어싱 방법에 의해 가공된 금속판 전단면(파단면)의 확대도1 is an enlarged view of a metal plate shearing surface (breaking surface) processed by a conventional piercing method

도 2는 본 발명에서 제시하는 반타발공정과 피어싱공정을 나타낸 예시도 및 각 주요부 확대도Figure 2 is an exemplary view showing the anti-punching process and the piercing process proposed in the present invention and each main portion enlarged view

도 3은 본 발명에서 제공하는 피어싱 방법의 공정 예시도Figure 3 is a process illustration of the piercing method provided by the present invention

▣ 도면의 주요부분에 사용된 부호의 설명 ▣▣ Explanation of symbols used in main part of drawing

10:살110:절단해낼 금속소재부분10: flesh 110: the part of the metal material to be cut

120:사용될 소재부분200:스트리퍼120: material to be used 200: stripper

210:펀치220:하부 다이210: Punch 220: Lower die

위 기술적 과제를 달성하기 위하여 본원에서는 첨부된 각 도면에 의거하여 상세히 설명하면 하기와 같다.In order to achieve the above technical problem, the present invention will be described in detail with reference to the accompanying drawings.

도 1에서 도시된 바와 같이 스트리퍼(200)가 주어진 가운데 상부의 펀치(상금형, 210)와 하부 다이(하금형, 220) 간 프레스 작동으로 절단함으로서 피어싱 공정이 이루어지는 통상의 피어싱 방법에 있어서,In the conventional piercing method in which the piercing process is performed by cutting the stripper 200 in a press operation between a given upper punch (upper die) 210 and a lower die (lower die, 220) as shown in FIG.

상기 피어싱 처리 공정 전 절단해낼 금속소재부분(110)과 사용될 소재부분(120)간 100%의 전단면이 형성되지 않고, 최소한 두께의 3/1 이상 살(10)이 붙은 상태로 전단시키는 반타발 공정을 먼저 수행한 다음 후 공정을 통해 그 자리에 피어싱 처리할 수 있도록 한 것이다.Semi-plash to shear the metal material portion 110 to be cut before the piercing process and the material portion 120 to be used are sheared in a state where at least 3/1 of the flesh (10) is at least 3 mm thick. The process was performed first and then the piercing process was performed in place.

이와 같이 사전에 반타발 공정을 먼저 수행해 놓게되면 사용될 소재부분의 전단면의 하측모서리(종래 피어싱시 버가 발생되었던 부분)에 피어싱 공정 전 이미 소정 크기의 자연"R"이 형성될 수 있고,In this way, if the anti-punching process is performed in advance, a natural “R” having a predetermined size may be formed in the lower edge of the front end face of the material portion to be used (a part where burrs were generated during the piercing) before the piercing process.

그 "R"은 후 공정인 피어싱시의 상,하 금형날(210,220)간 주어진 전단력에도 사라지지 않은 상태로 유지됨으로 버의 발생이 근본적으로 방지될 수 있다.The "R" can be fundamentally prevented from occurring because burrs are kept in a state that does not disappear even after a given shear force between the upper and lower mold blades 210 and 220 during the piercing process.

즉, 피어싱시 상기와 같이 버가 발생될 수 있는 전단면의 아래측에 종래와는 달리 버가 발생하는 것이 아니라 깔끔한 "R"이 그대로 유지될 수 있음에 따라서 상부 펀치의 하강에 따른 기본적인 상부 R과 더불어,That is, unlike the prior art, when the piercing, the burr is not generated on the lower side of the shear surface, which is generated as described above, the clean "R" can be maintained as it is, the basic upper R according to the lowering of the upper punch With,

결국, 금속판의 전단면 아래측과 위측 모두 R 형성이 가능함으로 버 제거 등과 같은 불필요한 후처리 공정이 전혀 필요치 않는다.As a result, since R can be formed on both the lower side and the upper side of the front face of the metal plate, unnecessary post-treatment processes such as burr removal are not necessary at all.

뿐만 아니라 피어싱 전 주지된 반타발로 인해 피어싱시 사용되는 펀치와 다이(220)에 가해지는 전단 응력이 최소화됨으로 날의 마모가 거의 발생되지 않아 펀치, 다이의 수명이 대폭 늘어나 반영구적인 수명을 갖게된다.In addition, the shear stress applied to the punch and the die 220 used during the piercing is minimized due to the well-known anti-piercing before piercing, so that the wear of the blade is hardly generated, and the life of the punch and the die is greatly increased to have a semi-permanent life.

그리고 상기한 반타발 공정은 도 4에서 도시된 바와 같이 펀칭작업 등과 같은 타공정과 중복진행이 가능하기 때문에 별도 공정의 상승우려가 전혀 없다.In addition, the anti-punching process can be duplicated with other processes, such as a punching operation, as shown in FIG.

또, 상기와 같이 반타발 후 피어싱 공정을 수행하게 되면 상술된 바와 같이 치수변화의 요소인 후 공정(버 제거시 가해질 수 있는 강압력)이 필요 없음으로 피어싱 치수만 관리하면 됨과 동시에 펀치, 다이(210,220)의 날마모 없이 전단이 이루어짐으로 치수변화가 일어나지 않는 등 치수관리의 용이성은 물론 보다 정밀한 가공이 가능하다.In addition, if the piercing process is performed after the anti-punching as described above, it is unnecessary to manage only the piercing dimension as there is no need for the post-process (a strong pressure that can be applied when removing the burr), which is an element of the dimensional change as described above. The shear is made without the wear of the 210, 220, such that the dimensional change does not occur, as well as more precise processing is possible.

아울러 상기한 반타발 공정은 피어싱 공정에만 국한 된 것은 아니고, 버의 발생을 근본적으로 방지할 필요성이 있는 정밀 펀치, 블랙킹 등의 금속판 가공시에 적용하여도 많은 효과를 볼 수 있다.In addition, the above-mentioned anti-punching process is not limited to the piercing process, and can be applied to a lot of effects when applied to metal plate processing such as precision punch, blacking, etc., which need to fundamentally prevent the generation of burrs.

이상에서 상세히 살펴본 바와 같이 본 발명의 금속판의 피어싱방법은 기존과 같은 피어싱공정 전에 수행되는 반타발공정으로 인해 피어싱 처리 후에도 버가 전혀 발생되지 않기 때문에 별도 추가적인 버 제거공정을 거치지 않아도 됨으로 고정절감의 효과를 얻을 수 있을 뿐만 아니라 보다 깨끗하고 정밀한 전단면과 치수관리의 용이성으로 보다 높은 품질을 얻을 수 있고, 나아가 피어싱에 사용되는 금형(펀칭, 다이)의 수명까지 반영구적으로 유지할 수 있는 등 그 기대되는 바가 실로 다대한 발명이다.As described in detail above, the piercing method of the metal plate of the present invention does not require any additional burr removal process after the piercing treatment due to the anti-pulling process performed before the piercing process as described above. In addition to providing a higher quality, cleaner and more precise shear surface and ease of dimensional management, the life of molds (punching and dies) used for piercing can be maintained semi-permanently. Indeed, it is a great invention.

Claims (1)

스트리퍼(200)가 주어진 가운데 상부의 펀치(상금형, 210)와 하부 다이(하금형, 220) 간 프레스 작동으로 절단함으로서 피어싱 공정이 이루어지는 통상의 피어싱 방법에 있어서,In a conventional piercing method in which a piercing process is performed by cutting a stripper 200 by a press operation between a punch (upper die) 210 and a lower die (lower die 220) at a given center, 상기 피어싱 처리 공정 전 절단해낼 금속소재부분(110)과 사용될 소재부분(120)간 100%의 전단면이 형성되지 않고, 최소한 두께의 3/1 이상 살(10)이 붙은 상태로 전단시키는 반타발 공정을 먼저 수행한 다음 후 공정을 통해 그 자리에 피어싱 처리할 수 있도록 한 것을 특징으로 한 금속판 피어싱방법.Semi-plash to shear the metal material portion 110 to be cut before the piercing process and the material portion 120 to be used are sheared in a state where at least 3/1 of the flesh (10) is at least 3 mm thick. A metal plate piercing method, characterized in that the piercing treatment can be performed in place after the first step.
KR1020040008229A 2004-02-09 2004-02-09 A piercing method of metallograph KR20040027526A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160090430A (en) 2015-01-21 2016-08-01 현대자동차주식회사 The apparatus and method of quality improvement for steel plate shearing edge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160090430A (en) 2015-01-21 2016-08-01 현대자동차주식회사 The apparatus and method of quality improvement for steel plate shearing edge

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