KR20100103137A - Automotive low arm and the manufacture method - Google Patents

Automotive low arm and the manufacture method Download PDF

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Publication number
KR20100103137A
KR20100103137A KR1020090021594A KR20090021594A KR20100103137A KR 20100103137 A KR20100103137 A KR 20100103137A KR 1020090021594 A KR1020090021594 A KR 1020090021594A KR 20090021594 A KR20090021594 A KR 20090021594A KR 20100103137 A KR20100103137 A KR 20100103137A
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South Korea
Prior art keywords
blanking
arm
low arm
manufacturing
metal plate
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KR1020090021594A
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Korean (ko)
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KR101073573B1 (en
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허인태
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주식회사 새해성
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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
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • 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
    • B21D28/06—Making more than one part out of the same blank; Scrapless working
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/02—Attaching arms to sprung part of vehicle

Abstract

PURPOSE: An automotive lower arm and a manufacturing method thereof are provided to reduce manufacturing costs by minimizing a loss when a low arm material of a metal plate is blanked. CONSTITUTION: A manufacturing method of an automotive low arm is as follows. Two kinds of metal plates with different thicknesses are selected from an automotive low arm. Positions for minimizing a loss of the selected metal plates are blanked. The blanked metal plates are integrated using butt welding. A lower panel is formed by bending the metal plates.

Description

자동차의 로암 및 그 제조방법{Automotive low arm and the manufacture method}Loam of car and its manufacturing method {Automotive low arm and the manufacture method}

본 발명은 자동차의 로암 및 그 제조방법에 관한 것으로서, 더욱 상세하게는 금속판재를 소정의 형상으로 블랭킹하고 절곡하여 구성된 상하판넬을 상자형으로 상호 용접하여 이루어지는 자동차의 로암을 제조할 때 블랭킹 공정에서 로암의 제조원가를 절감시키는 동시에 내구성도 향상시킬 수 있도록 구성된 자동차의 로암 및 그 제조방법에 관한 것이다.The present invention relates to a low arm of a vehicle and a method of manufacturing the same. More particularly, in the blanking process of manufacturing a low arm of an automobile, which is formed by blanking and bending a metal sheet into a predetermined shape, the upper and lower panels are welded to each other in a box shape. The present invention relates to a low arm and a method for manufacturing the same, which are configured to reduce the manufacturing cost of the low arm and to improve durability.

통상적으로 자동차용 로암(LOW-ARM)은 자동차의 크로스빔과 너클 아암사이에 연결설치되는 것으로, 이러한 로암은 활처럼 휜 형태로 구성되며, 일반적인 자동차용 로암의 제조방법으로는 금속판재를 블랭킹 공정과 절곡 공정에 의해서 가공된 상하판넬을 단면이 상자형으로 되게 상호 대접하여 용접으로 일체가 되도록 구성된다.Typically, a low arm for a vehicle is installed between a crossbeam of a vehicle and a knuckle arm, and the low arm is configured in a shape of a bow, and a general method of manufacturing a low arm for a vehicle includes a blanking process of a metal plate. And the upper and lower panels processed by the bending process are welded to each other so that their cross sections are box-shaped.

이러한 구조를 갖는 자동차용 로암은 자동차가 주행하는 중에 바퀴로부터 순간적인 충격이 가해지게 되면 활처럼 휜 중앙부가 가장 큰 힘을 받게 되므로 활처럼 휜 중앙부가 취약부분이 된다.The loam for automobiles having such a structure is the weakest part in the center of the bow as the bow is given the greatest force when the momentary impact is applied from the wheel while the car is driving.

따라서, 도 1에서와 같이 하부판넬(100)의 상면중앙부에 활처럼 휜 중앙부와 같은 외형을 갖는 별도의 보강판(101)을 밀접 시켜서 용접으로 일체가 되도록 구성하여 보강해 주도록 하고 있다.Therefore, as shown in FIG. 1, a separate reinforcing plate 101 having an external shape such as a bow is formed in the center of the upper surface of the lower panel 100 so as to be integrally formed by welding to reinforce.

이러한 구성의 경우에 하부판넬(100)과 보강판(101)을 두 장 합한 두께가 갖는 보강 효과를 기대하고 있으나, 실질적으로는 용접부분만 일체로 되고 이외에는 분리되는 구조이기 때문에 강도를 보강하는 효과를 크게 기대할 수가 없었다.In this case, the lower panel 100 and the reinforcement plate 101 are expected to have the reinforcing effect of the thickness of the two sheets, but the effect of reinforcing the strength because it is a structure in which only the welded portions are integrated and separated from each other. I could not expect much.

또한, 보강판(101)이 일부분에 형성되었기 때문에 구조역학상 보강판(101)의 주변에는 비틀림이나 순간적인 충격하중 등에 매우 약하고 또 내구성이 떨어지기 때문에 사고시 탑승자의 안전과 직결되므로 이에 대한 개선책이 시급한 실정이다.In addition, since the reinforcement plate 101 is formed in a part, the structure of the reinforcement plate 101 is very weak and durable due to torsion or instantaneous impact load, so that the durability of the occupant is directly related to the safety of the occupant in case of an accident. It is urgent.

그리고, 상기와 같은 구성의 자동차용 로암은 금속판재를 블랭킹 가공으로 소재를 얻게 되는데, 그 형상이(ㅅ)자형으로 되어 있기 때문에 금속판재에서 로암 소재를 블랭킹하고 나면 로스가 많이 발생 될 수밖에 없다.In addition, the roam for automobiles having the above-described configuration obtains a material by blanking the metal plate, and since the shape is a (g) shape, there is a lot of loss after blanking the roam material in the metal plate.

따라서, 금속판재 로스에 따른 문제로 인한 제조원가가 비싸게 형성될 수밖에 없는 등 자동차 로암의 제조방법에 있어서 많은 문제점이 있었다.Therefore, there are many problems in the manufacturing method of the automobile roam, such as the manufacturing cost due to the problem caused by the loss of the metal sheet is expensive.

상기한 문제점을 감안하여 안출한 본 발명의 자동차의 로암은 강도가 많이 요구되는 부분은 두꺼운 금속판재로 구성하여 비틀림이나 순간적인 충격하중 그리고 내구성 등에서 종전에 비해 훨씬 강한 강도를 갖는 자동차용 로암을 제공함에 있고,The loam of the automobile of the present invention devised in view of the above problems is composed of a thick metal plate portion to provide a vehicle loam having a much stronger strength than before in the torsion, instantaneous impact load and durability. In the

특히, 자동차용 로암에서 강도가 많이 요구되는 부분과 좀 덜 요구되는 부분을 분리하여 두께가 다른 금속판재로 블랭킹 가공함으로써, 금속판재에서 로암 소재를 블랭킹 할 때 로스를 최소화하여 제조원가가 저렴하게 제공할 수 있는 자동차의 로암의 제조방법을 제공함에 그 목적이 있다.In particular, by separating the parts that require a lot of strength and the parts that are less demanded from the automotive roam by blanking them with metal plates of different thicknesses, it is possible to provide low manufacturing costs by minimizing loss when blanking the roam material on the metal sheet. It is an object of the present invention to provide a method for manufacturing a loam of an automobile.

본 발명에 의한 자동차의 로암 및 그 제조방법은, 자동차용 로암에서 강도가 많이 요구되는 부분과 좀 덜 요구되는 부분을 분리하여 두께가 다른 금속판재로 블랭킹 가공을 하되, 로스를 최소화할 수 있는 위치, 즉 (ㅅ)자의 왼쪽 삐침과 오른쪽 삐침의 연결지점을 분할하여 두께가 서로 다른 금속판재로 블랭킹 가공하고, 상호 용접으로 일체화한 후에 절곡하여 하부판넬로 구성하고 상부판넬과 용접하여 로암을 완성한 것을 본 발명에 특징으로 한다.Roam of the automobile according to the present invention and a method for manufacturing the same, but the blanking process with a metal plate of different thickness by separating a portion of the high strength and a less demanding portion in the automotive arm, the position that can minimize the loss In other words, by dividing the connection points between the left and right spools of (g), blanking is made of metal plates of different thicknesses, integrated by mutual welding, bent to form lower panels, and welded with upper panels to complete the low arm. It is characterized by the present invention.

본 발명에 따른 자동차의 로암 및 그 제조방법에 의하면, 로암에서 강도가 많이 요구되는 부분은 두꺼운 금속판재로 구성하여 비틀림이나 순간적인 충격하중 그리고 내구성, 강도 등에서 훨씬 강화시켜 줄 수가 있게 되므로 차량의 안전성 향상 및 사고시 탑승자들의 안전에 도움을 주는 효과가 있으며,According to the roam of the automobile according to the present invention and a method of manufacturing the same, the portion of the roam that requires a lot of strength is made of a thick metal plate material can be further strengthened in torsion, instantaneous impact load, durability, strength, etc. It has the effect of improving the safety of occupants in the event of an upgrade and accident,

또, 자동차용 로암에서 강도가 많이 요구되는 부분과 좀 덜 요구되는 부분을 분리하여 두께가 다른 금속판재로 블랭킹 가공함으로써, 금속판재에서 로암 소재를 블랭킹할 때 로스를 최소화하여 제조원가가 저렴하게 제공할 수 있기 때문에 대외 경쟁력을 확보하는 등의 효과가 기대되는 발명이다.In addition, by separating the parts that require a lot of strength and the parts that are less demanded from the car's low arm and blanking the metal plate with different thicknesses, it is possible to provide low manufacturing cost by minimizing loss when blanking the low arm material in the metal plate. Therefore, the invention is expected to have an effect such as securing external competitiveness.

이하 본 발명에 의한 자동차의 로암 및 그 제조방법에 관한 실시예를 첨부된 도면과 함께 상세히 설명한다.Hereinafter, an embodiment of a low arm and a method of manufacturing the same according to the present invention will be described in detail with the accompanying drawings.

도 3은 본 발명에 의한 왼쪽 삐침 금속판재 블랭킹하는 예시도Figure 3 is an exemplary view of blanking the left squeak metal sheet according to the present invention

도 4는 본 발명에 의한 오른쪽 삐침 금속판재 블랭킹하는 예시도Figure 4 is an exemplary view of blanking the right squeezing metal sheet according to the present invention

도 5는 본 발명에 의한 왼쪽 삐침 금속판재와 오른쪽 삐침 금속판재가 용접된 사시도5 is a perspective view in which the left pleated metal plate and the right pleated metal plate according to the present invention are welded.

도 6은 본 발명에 의한 하부판넬을 연결상태를 보인 단면도Figure 6 is a cross-sectional view showing a connection state of the lower panel according to the present invention

도 7은 본 발명에 의한 금속판재를 절곡하여 구성된 하부판넬의 사시도7 is a perspective view of a lower panel constructed by bending a metal sheet according to the present invention;

도 8은 본 발명에 의한 자동차용 로암의 사시도이다.8 is a perspective view of a vehicle arm according to the present invention.

본 발명은 자동차의 로암 및 그 제조방법은,The present invention is a low-arm and a method of manufacturing the same,

제 1공정(소재선택공정)1st process (material selection process)

자동차용 로암(1)에서 강도가 많이 요구되는 부분과 좀 덜 요구되는 부분을 분리하여 두께가 다른 2종의 금속판재(2)(3)를 선택한다.Two kinds of metal plates (2) (3) having different thicknesses are selected by separating the parts requiring more strength and the parts less demanding from the automotive arm (1).

제 2공정(금형준비공정)2nd process (mould preparation process)

제 1공정에서 선택한 2종의 금속판재(2)(3)의 로스를 최소화할 수 있는 위치, 즉 (ㅅ)자의 왼쪽 삐침과 오른쪽 삐침의 연결부분을 분리하여 블랭킹 가공할 수 있게 금형을 준비한다.The mold is prepared to be blanked by separating the connection between the left and right spigots of the two pieces of metal plate (2) (3) selected in the first step, that is, the connection between the left squeak and the right squeezer of (S). .

제 3공정(3rd process ( 블랭킹공정Blanking Process ))

제 2공정에서 준비한 금형을 통해서 1공정에서 선택한 2종의 금속판 재(2)(3)를 각각 금형에서 블랭킹 가공을 하되, 상기 금속판재(2)(3)의 로스를 최소화할 수 있는 위치에 배치하여 (ㅅ)자의 왼쪽 삐침과 오른쪽 삐침의 연결지점을 분할하여 블랭킹 가공하되, (ㅅ)자의 왼쪽 삐침은 얇은 금속판재 오른쪽 삐침은 좀 더 두꺼운 금속판재로 한다. The metal sheet material (2) (3) selected in the first step is blanked in the mold through the mold prepared in the second step, but the position of the metal plate material (2) (3) is minimized. The blanking process is made by dividing the connection point between the left and right spools of (S) and blanking, while the left spool of (s) is made of thinner metal plate.

제 4공정(용접공정)4th process (welding process)

제 3공정의 블랭킹 가공으로 얻은 소재(20)(30)를 상호 맞대기 용접으로 일체화한다.The raw material 20, 30 obtained by the blanking process of a 3rd process is integrated by mutual butt welding.

제 5공정(프레스 5th process (press 절곡Bending 및 용접공정) And welding process)

제 4공정으로 얻은 소재를 절곡하여 하부판넬(40)로 구성하고 동일한 형상으로 제조된 상부판넬(50)과 상호 용접하여 자동차용 로암(1)을 완성한 것이다.The raw material obtained by the fourth process is bent to form a lower panel 40 and welded together with the upper panel 50 manufactured in the same shape to complete the automotive arm 1.

상기한 자동차의 로암의 제조방법에 의해서 제조된 자동차용 로암 구성의 경우에 하부판넬(40)에서 자동차가 주행하는 중에 바퀴로부터 순간적인 충격이 가해지게 되면 활처럼 휜 중앙부가 가장 큰 힘을 받게 되는데, 활처럼 휜 중앙부의 취약부분이 전체적으로 두꺼운 금속판재로 형성되었기 때문에 구조역학상 비틀림이나 순간적인 충격하중 등이 골고루 분산되어 내구성 및 강도를 극대화시키는 결과를 볼 수 있다.In the case of the vehicle roam configuration manufactured by the method of manufacturing a roam of the vehicle described above, if a momentary impact is applied from the wheel while the car is running in the lower panel 40, the center portion of the bow is subjected to the greatest force. Because the weak part in the center of the bow is formed of a thick metal plate as a whole, the torsion and instantaneous impact loads are evenly distributed in structural mechanics, resulting in maximum durability and strength.

따라서, 자동차가 주행시 타이어에 가해지는 외력을 흡수하고 또 타이어의 회전중심을 잡아주는 등 기본적인 기능을 완벽하게 수행하게 된다.Therefore, the vehicle absorbs the external force applied to the tire while driving and performs the basic functions perfectly such as holding the center of rotation of the tire.

도 1은 종래 로암을 구성하는 하부판넬의 사시도1 is a perspective view of a lower panel constituting a conventional low-arm

도 2는 종래 로암을 블랭킹하는 예시도Figure 2 is an illustration of blanking the conventional low arm

도 3은 본 발명에 의한 왼쪽 삐침 금속판재 블랭킹하는 예시도Figure 3 is an exemplary view of blanking the left squeak metal sheet according to the present invention

도 4는 본 발명에 의한 오른쪽 삐침 금속판재 블랭킹하는 예시도Figure 4 is an exemplary view of blanking the right squeezing metal sheet according to the present invention

도 5는 본 발명에 의한 왼쪽 삐침 금속판재와 오른쪽 삐침 금속판재가 용접된 사시도5 is a perspective view in which the left pleated metal plate and the right pleated metal plate according to the present invention are welded.

도 6은 본 발명에 의한 하부판넬을 연결상태를 보인 단면도Figure 6 is a cross-sectional view showing a connection state of the lower panel according to the present invention

도 7은 본 발명에 의한 금속판재를 절곡하여 구성된 하부판넬의 사시도7 is a perspective view of a lower panel constructed by bending a metal sheet according to the present invention;

도 8은 본 발명에 의한 자동차용 로암의 사시도8 is a perspective view of a low arm for automobiles according to the present invention;

*** 도면의 주요부분에 대한 부호의 설명****** Explanation of symbols for main parts of drawing ***

1 : 로암1: Roam

2 :3: 금속판재2: 3: metal plate

20: 30: 소재20: 30: material

40: 하부판넬40: lower panel

50: 상부판넬50: upper panel

Claims (2)

자동차용 로암(1)에서 강도가 많이 요구되는 부분과 좀 덜 요구되는 부분을 분리하여 두께가 다른 2종의 금속판재(2)(3)를 선택하는 공정과;Selecting two kinds of metal plate materials (2) (3) having different thicknesses by separating parts requiring much strength and parts less demanding from the automotive arm (1); 선택한 2종의 금속판재의 로스를 최소화할 수 있는 위치, 즉 (ㅅ)자의 왼쪽 삐침과 오른쪽 삐침의 연결지점을 분할하여 블랭킹 가공할 수 있게 금형을 준비하는 공정과;Preparing a mold to be blanked by dividing a location where the loss of the selected two kinds of metal sheets can be minimized, that is, a connection point between the left and right spigots of (s); 제 2공정에서 준비한 금형을 통해서 1공정에서 선택한 2종의 금속판재(2)(3)를 각각 금형에서 블랭킹 가공을 하되, 상기 금속판재의 로스를 최소화할 수 있는 위치에 배치하여 (ㅅ)자의 왼쪽 삐침과 오른쪽 삐침의 연결지점을 분하여 블랭킹 가공하는 공정과;The metal sheet material (2) (3) selected in step 1 through the mold prepared in the second step is subjected to a blanking process in the mold, respectively, and placed in a position to minimize the loss of the metal sheet material (S) Blanking by dividing the connection points between the left and the right squeaks; 제 3공정의 블랭킹 가공으로 얻은 소재(20)(30)를 상호 맞대기 용접으로 일체화하고 소재를 절곡하여 하부판넬(40)로 구성하고 동일한 형상으로 제조된 상부판넬(50)과 상호 용접하는 공정으로 이루어진 것을 특징으로 하는 자동차용 로암의 제조방법.The material 20, 30 obtained by the blanking process of the third process is integrated with each other by butt welding, and the material is bent to form the lower panel 40 and welded with the upper panel 50 manufactured in the same shape. Method for producing a loam for automobiles, characterized in that made. 제 1항의 제조방법에 의해서 (ㅅ)자의 왼쪽 삐침과 오른쪽 삐침의 연결부분을 분리하여 블랭킹 가공하여 얻은 소재를 상호 맞대기 용접으로 일체화하고 소재를 절곡하여 하부판넬로 구성하고 동일한 형상으로 제조된 상부판넬과 상호 용접하여 구성된 것을 특징으로 하는 자동차용 로암.The upper panel manufactured by the same shape as the lower panel by integrating the material obtained by blanking by separating the connection part of the left and right squeezers of (G) by the method of claim 1 Roam for automobiles, characterized in that configured by welding with each other.
KR1020090021594A 2009-03-13 2009-03-13 Automotive low arm and the manufacture method KR101073573B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017064404A1 (en) * 2015-10-16 2017-04-20 Renault S.A.S. Suspension arm having different thicknesses

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Publication number Priority date Publication date Assignee Title
KR101496573B1 (en) 2013-10-14 2015-02-25 주식회사 새해성 Automotive lower arm manufacture method

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JP3485780B2 (en) 1997-12-25 2004-01-13 三菱自動車工業株式会社 Sheet metal part and method of manufacturing the same
KR200200800Y1 (en) * 2000-05-17 2000-10-16 주식회사화신 Law-arm for automobile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017064404A1 (en) * 2015-10-16 2017-04-20 Renault S.A.S. Suspension arm having different thicknesses
FR3042444A1 (en) * 2015-10-16 2017-04-21 Renault Sas SUSPENSION ARM HAVING DIFFERENT THICKNESSES

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