KR100245744B1 - Rocker arm casting method of automobile valve - Google Patents
Rocker arm casting method of automobile valve Download PDFInfo
- Publication number
- KR100245744B1 KR100245744B1 KR1019950067574A KR19950067574A KR100245744B1 KR 100245744 B1 KR100245744 B1 KR 100245744B1 KR 1019950067574 A KR1019950067574 A KR 1019950067574A KR 19950067574 A KR19950067574 A KR 19950067574A KR 100245744 B1 KR100245744 B1 KR 100245744B1
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- KR
- South Korea
- Prior art keywords
- rocker arm
- manufacturing
- frm
- automobile valve
- cam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
본 발명은 자동차 밸브기구 로커암 제조방법에 관한 것으로, 더 상세하게는 캠과 접촉되는 부위를 내마모성이 우수한 재료를 보강하도록 하는 자동차 밸브 기구의 로커암 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a rocker arm of an automobile valve mechanism, and more particularly, to a method for manufacturing a rocker arm of an automobile valve mechanism for reinforcing a material having excellent wear resistance at a portion in contact with a cam.
본 발명에 따른 자동차 밸브기구의 로커암 제조방법을 로커암(B)의 형태로 예비성형된 알루미늄과 일정한 두께의 FRM소재를 마련하여, 캠과의 접촉부위(b)에 상기 FRM소재를 스퀴즈캐스팅 방식으로 복합화 시키는 것에 그 특징이 있다.In the method for manufacturing a rocker arm of an automobile valve mechanism according to the present invention, a pre-molded aluminum and a FRM material having a predetermined thickness in the form of a rocker arm (B) are provided to squeeze the FRM material at a contact portion (b) with a cam. It is characterized by the complex method.
Description
본 발명은 자동차 밸브기구의 로커암 제조방법에 관한 것으로, 더 상세하게는 캠과 접촉되는 부위를 내마모성이 우수한 재료를 보강하도록 하는 자동차 밸브기구의 로커암 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a rocker arm of an automobile valve mechanism, and more particularly, to a method for manufacturing a rocker arm of an automobile valve mechanism for reinforcing a material having excellent wear resistance at a portion in contact with a cam.
자동차의 로커암은 캠축의 회전에 의해 연동되어 흡기밸브 및 배기밸브를 개폐하는 기능을 하는 밸브기구중의 하나로써, 가벼운 알루미늄 주물제작한다.The rocker arm of the vehicle is one of the valve mechanisms which are linked by the rotation of the camshaft to open and close the intake valve and the exhaust valve.
이러한 로커암은 주로 DOHC엔진에 사용되며, 4기통 DOHC엔진의 경우 16개의 로커암이 사용된다.These rocker arms are mainly used for DOHC engines. For the four-cylinder DOHC engines, 16 rocker arms are used.
그리고 엔진 구동시 로커암은 일측 하단이나 등부분이 캠과 접촉되는데, 이 접촉부는 마찰력을 많이 받으며 초하중이 걸리기 때문에 내마모성 및 강도가 우수해야 한다.And when the engine is driven, the rocker arm is in contact with the cam at the lower end or the back part of the rocker arm, and this contact part receives a lot of frictional force and takes super load, so the wear resistance and strength should be excellent.
제1도는 종래의 로커암을 나타낸 것으로, 종래의 로커암(A)을 제조할 때 알루미늄으로 주조한 후, 캠과의 접촉부위(a)를 칠드(CHILLED)처리하는 방법으로 보강하였다.FIG. 1 shows a conventional rocker arm, which is cast in aluminum when the conventional rocker arm A is manufactured, and then reinforced by a method of Chillled treatment of the contact portion a with the cam.
그러나, 이러한 종래의 로커암(A)은 캠과의 접촉부위(a)가 칠드처리되어 있으나, 칠드처리된 깊이를 알 수 없으므로 제품의 불량여부를 알 수 없으며, 이로 인하여 불량상태인 로커암(A)이 조립되어 밸브기구의 수명을 단축시키는 문제점이 있었다.However, in the conventional rocker arm (A), the contact area (a) with the cam is chilled, but because the depth of the chilled process is not known, it is impossible to know whether the product is defective, and thus the rocker arm (which is in a bad state) A) was assembled to reduce the life of the valve mechanism.
FRM(fiber reinforced metal)은 MMC(metal matrix composite)라고도 하며, 일종의 유리 섬유를 강화재로 하여 금속의 성질을 보강하는 복합재료로써 matrix로는 주로 알루미늄이나 마그네슘이 사용되며 내마모성 및 내열성이 뛰어나면서 경량화를 얻기 위하여 사용된다.Fiber reinforced metal (FRM), also known as MMC (metal matrix composite), is a composite material that reinforces the properties of metals by using a kind of glass fiber as a reinforcing material, and mainly uses aluminum or magnesium as a matrix. To be used.
FRM의 제조 공정은, 먼저 fiber로 예비성형체를 만들고 이 예비성형체에 고온의 요융상태의 금속을 붓고 가압하여 예비성형체 사이로 금속을 침무시켜 제조한다.The manufacturing process of the FRM is made by first making a preform with fibers, pouring a high temperature molten metal into the preform, and pressing the metal to impregnate the metal between the preforms.
상기 예비성형체는 fiber로 이루어져 있으므로 형상을 이루고는 있지만 그 내부에 수많은 기공이 있어 다른 물질이 쉽게 침투할 수 있으며, 예비성형체는 유리섬유로 제조되기 때문에 매우 가벼우며 상기 예비성형체의 부피 만큼의 금속이 덜 필요하기 때문에 그만큼 경량화가 얻어지며 또한, 이들 조합의 특성에 의해 가볍지만 우수한 특성이 얻어진다.Since the preform is made of fiber, it has a shape, but there are numerous pores therein, so that other materials can easily penetrate. The preform is made of glass fiber, so it is very light and the metal of the preform is as large as the volume of the preform. The weight reduction is obtained by less because it is less necessary, and the light but excellent properties are obtained by the properties of these combinations.
한편, 상기 FRM은 가볍고 기계적물성이 높으며, 특히 내마모성이 우수한 신소재이나 여타 금속과 복합화가 이루어지지 않고 있는 실정에 있다.On the other hand, the FRM is light and high mechanical properties, in particular, the situation is not compounded with new materials or other metals excellent in wear resistance.
이러한 점을 감안한 본 발명의 목적은 FRM을 로커암의 캠과의 접촉부위에 복합화를 실현함으로써 내마모성이 우수하며 기계적물성을 높게하는 동시에 양질의 로커암 제조방법을 제공하는데 있다.It is an object of the present invention in view of this point to provide a high quality rocker arm manufacturing method while achieving excellent wear resistance and high mechanical properties by realizing complexation of the FRM with the contact portion of the rocker arm.
상술한 목적을 달성하기 위하여 로커암의 제조시 알루미늄을 사용하여 소정형태로 제조하되, 스퀴즈캐스팅(SQUEEZE CASTING)으로 일정한 두께의 FRM소재를 캠과의 접촉부위에 복합화 시키는 로커암 제조방법을 제시한다.In order to achieve the above object, a rocker arm is manufactured in a predetermined form using aluminum in the manufacture of a rocker arm, and a rocker arm manufacturing method of complexing a FRM material having a constant thickness with a contact portion with a cam by squeeze casting is proposed. .
제1도는 종래의 제조방법으로 제조된 로커암의 단면도.1 is a cross-sectional view of a rocker arm manufactured by a conventional manufacturing method.
제2도는 본 발명의 제조방법에 따라 제조된 로커암의 단면도.2 is a cross-sectional view of a rocker arm manufactured according to the manufacturing method of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
A, B : 로커암 a, b : 캠과의 접촉부위A, B: rocker arm a, b: contact area with cam
이하, 본 발명의 바람직한 실시예를 더욱 상세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in more detail.
제2도는 본 발명에 다른 로커암을 나타낸 것으로, 본 발명에 다른 로커암의 제조방법은 로커암(B)의 형태로 예비성형된 알루미늄과 일정한 두께의 FRM소재를 마련하여, 캠과의 접촉부위(b)에 상기 FRM소재를 스퀴즈캐스팅 방식으로 복합화시키는 것에 그 특징이 있다.2 shows a rocker arm according to the present invention. The method of manufacturing a rocker arm according to the present invention provides a pre-molded aluminum and a FRM material having a predetermined thickness in the form of a rocker arm (B) to contact the cam. (b) is characterized in that the FRM material is compounded by a squeeze casting method.
본 발명은 로커암(B)의 제조시, 일정한 두께를 갖는 FRM과 알루미늄만으로 예비성형된 로커암(B)을 금형에 얹어 놓은 상태에서 스퀴즈캐스팅을 실시하면 알루미늄이 FRM에 침투되어 알루미늄과 FRM의 복합화가 이루어진다. 이때, 예비성형된 FRM의 두께에 비례하여 균등한 보강효과를 확인할 수 있게 된다.In the present invention, when the rocker arm (B) is squeeze cast in a state in which a rocker arm (B) pre-formed with only a certain thickness of FRM and aluminum is placed on a mold, aluminum penetrates into the FRM and the aluminum and the FRM Complexity is achieved. At this time, it is possible to check an equal reinforcement effect in proportion to the thickness of the preformed FRM.
상술한 바와 같이, 본 발명에 따른 로커암 제조방법은 로커암의 접촉부위에 대한 내마모성 및 기계적물성을 향상시키면서 균등한 보강효과를 획득할 수 있을 뿐만 아니라, 로커암의 주조 후 칠드처리를 위하여 열처리를 할 필요가 없으므로 스퀴즈캐스팅, 한 공정만으로 제조되므로 공정의 단축과 제조비용이 절감되는 효과가 있다.As described above, the rocker arm manufacturing method according to the present invention can not only obtain an equivalent reinforcing effect while improving the wear resistance and mechanical properties of the contact portion of the rocker arm, as well as heat treatment for the post-casting treatment of the rocker arm. Since there is no need to squeeze casting, only one process is manufactured, there is an effect of shortening the process and reducing the manufacturing cost.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950067574A KR100245744B1 (en) | 1995-12-29 | 1995-12-29 | Rocker arm casting method of automobile valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950067574A KR100245744B1 (en) | 1995-12-29 | 1995-12-29 | Rocker arm casting method of automobile valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970033211A KR970033211A (en) | 1997-07-22 |
| KR100245744B1 true KR100245744B1 (en) | 2000-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950067574A KR100245744B1 (en) | 1995-12-29 | 1995-12-29 | Rocker arm casting method of automobile valve |
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| KR (1) | KR100245744B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010059703A (en) * | 1999-12-30 | 2001-07-06 | 이계안 | A method for preparing a rocker arm for automobile |
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1995
- 1995-12-29 KR KR1019950067574A patent/KR100245744B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR970033211A (en) | 1997-07-22 |
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