KR102090793B1 - A Mold end Manufacturing Method for the Cylinder Block of Construction Machinery - Google Patents

A Mold end Manufacturing Method for the Cylinder Block of Construction Machinery Download PDF

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KR102090793B1
KR102090793B1 KR1020180163791A KR20180163791A KR102090793B1 KR 102090793 B1 KR102090793 B1 KR 102090793B1 KR 1020180163791 A KR1020180163791 A KR 1020180163791A KR 20180163791 A KR20180163791 A KR 20180163791A KR 102090793 B1 KR102090793 B1 KR 102090793B1
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South Korea
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mold
cylinder block
cavity
manufacturing
core
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KR1020180163791A
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Korean (ko)
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이상덕
송수영
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주식회사 진흥주물
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/108—Installation of cores
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

A mold for a cylinder block of a construction machine according to the present invention includes an upper mold (M1) and a lower mold (M2), wherein a pouring hole (230) is formed on an upper part of the upper mold (M1), A mold (M) formed by coupling the upper mold (M1) to the top of the lower mold (M2) comprises: a cavity (C) including an upper cavity (C1) formed on the central inner lower surface of the upper mold (M1) and having an upper body shape of a cylinder block of a construction machine, and a lower cavity (C2) formed on the central inner upper surface of the lower mold (M2) and having a lower body shape of the cylinder block of the construction machine; and a shaft hole core (221) provided through the center of the cavity (C) in a vertical direction.

Description

건설기계 실린더블록용 주형 및 제조방법{A Mold end Manufacturing Method for the Cylinder Block of Construction Machinery}A mold end manufacturing method for the cylinder block of construction machinery}

본 발명은 주형 및 제조방법에 관한 것으로, 더욱 상세하게는 기존의 주형제작공정을 개선시킴으로써 보다 짧은 주형제작공정으로 가공이 단순화되어 원가가 절감되고, 생산성이 향상되며, 불량률이 감소하고, 더불어서 높은 강도를 가지면서, 가스발생이 최소화되어 주물의 결함 또한 최소화되는 건설기계 실린더블록용 주형 및 제조방법에 관한 것이다.The present invention relates to a mold and a manufacturing method, and more specifically, by improving the existing mold manufacturing process, processing is simplified to a shorter mold manufacturing process, thereby reducing costs, improving productivity, reducing defect rates, and high The present invention relates to a mold and a manufacturing method for a cylinder block of a construction machine having a strength and minimizing defects of a casting by minimizing gas generation.

종래의 건설기계용 실린더블록은 주철재의 라이너를 사형주형에 매립한 후 용탕을 주입하여 실린더블록을 제조하거나 용탕을 주입하여 실린더 블록을 제조한 후 라이너를 압입하는 것 등에 의해 제조되는 방법이 사용되어 왔으며, 최근에는 실린더블록의 경량화를 위하여 주철재의 라이너가 사용되지 않는 라이너리스 실린더블록을 제조하는 방법이 실시되어 왔고, 건설기계에 적용되는 라이너리스 실린더 블록은 먼저 실린더블록을 주조한 후, 실린더 보어를 정밀가공 하는 방법으로 제조를 하고 있다.Conventional cylinder blocks for construction machinery use a method that is manufactured by filling a liner of cast iron into a sand mold and then injecting molten metal to produce a cylinder block or by injecting molten metal to produce a cylinder block and then pressing the liner. In recent years, a method of manufacturing a linerless cylinder block in which a liner made of cast iron is not used has been carried out to reduce the weight of a cylinder block, and the linerless cylinder block applied to a construction machine is first cast a cylinder block, The cylinder bore is manufactured by precision processing.

아래에 기재된 기술은 종래 실린더 블록의 주조공정이다. 도 2는 종래 실린더블록용 중자가 결합된 상태의 사시도, 도 3은 종래 실린더블록 중자상형의 사시도. 도 4는 종래 실린더블록 중자하형의 사시도, 도 5는 종래 실린더블록의 주조상태 단면도이다.The technique described below is a conventional cylinder block casting process. Figure 2 is a perspective view of a conventional core for a cylinder block combined, Figure 3 is a perspective view of a conventional cylinder block core shape. Figure 4 is a perspective view of a conventional cylinder block middle and lower type, Figure 5 is a cross-sectional view of a casting state of the conventional cylinder block.

도시된 바와 같이 종래 건설기계용 주형는 중자(100), 중자상형(110), 중자하형(120), 주형(m)을 포함하여 이루어져 있다.As shown in the drawing, the conventional construction machine mold includes a core 100, a core shape 110, a core shape 120, and a mold m.

중자상형(110)은, 내부캐비티가 건설기계용 실린더블록의 상부형상을 하고 있으며, 내부상면에 원주방향으로 실린더용중자(111)가 돌출되어 배치되어 있고, 중앙에는 용탕이 주입되는 탕구(130)가 관통되어 형성되어 있다.In the core shape 110, the inner cavity has an upper shape of the cylinder block for construction machinery, and the cylinder core 111 is protruded and arranged in a circumferential direction on the inner top surface, and the center is a molten metal injection hole ( 130) is formed through.

중자하형(120)은, 내부캐비티가 건설기계용 실린더블록의 하부형상을 하고 있으며, 내부저면의 중앙에 축공용중자(121)가 돌출되어 배치되어 있다.In the middle-lower type 120, the inner cavity has a lower shape of the cylinder block for construction machinery, and the shaft hole core 121 is disposed protruding in the center of the inner bottom surface.

주형(m)는, 주형상형(m1)과 주형하형(m2)으로 이루어져 있으며, 주형상형(m1)에는 중자상형(110)이 매설되어 있고, 주형하형(m2)에는 중자하형(120)이 매설되어 있으며, 주형상형(m1)의 상부에는 탕구(130)가 구비되어 있어, 용탕을 중자 상,하형이 형성하는 캐비티(c)내로 주입할 수 있다.The mold (m) is composed of a mold top (m1) and a mold bottom (m2), the mold top (m1) has a core shape 110, and a bottom bottom mold (m2) has a middle bottom shape (120). , The upper portion of the mold (m1) is provided with a sprue 130, the molten metal can be injected into the cavity (c) formed by the upper and lower mold.

이와 같은 주형의 상형에 형성된 탕구에 용탕을 주입하면, 중자 상,하형이 형성하는 캐비티(c)에 의하여 실린더(11) 및 축공(12)이 구비된 건설기계용 실린더블록(10)을 주조할 수 있는 주형이 공지되어 있다. (도 1 참조)When the molten metal is injected into the spout formed in the upper mold of the mold, the cylinder block 10 for the construction machine equipped with the cylinder 11 and the shaft hole 12 is cast by the cavity (c) formed by the upper and lower molds. Molds that can be known are known. (See Figure 1)

그러나, 종래의 건설기계용 실린더블록을 주조하기 위하여서는 실린더용중자(111)를 설치하기 위한, 중자상형(110) 및 중자하형(120)을 제조하는 공정이 반드시 필요하므로, 생산성이 현저하게 저하되며, 중자상형(110)의 내부저면에 구비된 실린더용중자(111)가 원주방향으로 불균등하게 배치되는 것으로 인하여, 실린더의 중심이 편심되어 주조되면, 실린더보어의 후가공 시 드릴 등의 공구가 편심된 실린더보어에 의하여 파손되는 문제점이 있다.However, in order to cast a cylinder block for a construction machine in the prior art, a process for manufacturing the core shape 110 and the core shape shape 120 for installing the cylinder core 111 is essential, so productivity is significantly When the center of the cylinder is eccentrically cast, due to the uneven arrangement of the cylinder core 111 provided on the inner bottom surface of the core shape 110, a tool such as a drill during post-processing of the cylinder bore There is a problem that is damaged by the eccentric cylinder bore.

등록특허공보 제10-0270902호 (2000.11.01. 공고)Registered Patent Publication No. 10-0270902 (2000.11.01.announcement)

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 중자상형과 중자하형 및 실린더용중자를 제거하고, 주형의 상,하형에 직접 건설기계용 실린더블록의 형상을 갖는 캐비티를 구비하면서, 캐비티의 중앙에 축공용중자만을 설치함으로써, 실린더가 구비되지 않고, 축공만이 형성된 건설기계용 실린더블록을 주조하기 위한 것으로서, 공정이 단순화된 주형제작공정으로 가공이 단순화되어 원가가 절감되고, 생산성이 향상되며, 불량률이 감소하고, 더불어서 높은 강도를 가지면서, 가스발생이 최소화됨으로써 주물의 결함 또한 최소화되면서, 후가공시 들릴 등의 공구가 파손되는 것을 방지할 수 있는 건설기계 실린더블록용 주형 및 제조방법을 제공하고자 함이다.The present invention is to solve the above problems, and removes the core shape, the core shape, and the core for the cylinder, while having a cavity having the shape of a cylinder block for construction machinery directly in the top and bottom of the mold, in the center of the cavity. By installing only the core for the shaft hole, the cylinder is not provided, and it is for casting a cylinder block for a construction machine in which only the shaft hole is formed. The process is simplified with a simplified mold manufacturing process, thereby reducing costs and improving productivity. Providing a mold and manufacturing method for cylinder blocks for construction machinery that can prevent tools such as lifting during post-processing while reducing defects, minimizing defects of casting by minimizing gas generation while having high strength. Willing.

본 발명 건설기계 실린더블록용 주형의 제조방법은, 실린더블록 하부형 캐비티가 형성된 주형하형을 제조하는 단계, 실린더블록 상부형 캐비티가 형성된 주형상형을 제조하는 단계, 실린더블록 축공용 중자를 제조하는 단계, 주형하형의 캐비티 중앙에 축공용 중자를 설치하는 단계, 주형하형에 주형상형을 결합하는 단계, 용탕을 주탕구에 주입하는 주조단계, 주형을 분리하여 주물을 인출하는 탈형단계가 순차적으로 진행되는 것을 특징으로 한다.Method of manufacturing a mold for a cylinder block of a construction machine according to the present invention comprises the steps of: manufacturing a mold lower mold having a cylinder block lower cavity; forming a mold upper mold with a cylinder block upper cavity; and manufacturing a core for a cylinder block shaft hole. , The step of installing a core for the shaft hole in the center of the cavity of the mold lower mold, the step of combining the mold mold with the mold lower mold, the casting step of injecting the molten metal into the pouring hole, and the demoulding step of separating the mold and drawing the casting sequentially proceeds It is characterized by.

또한, 주형을 분리하여 주물을 인출하는 탈형단계 이후에, 섭씨 600도에서 4 ~ 5 시간 공냉하는 어닐링단계, 실린더 보어 등을 가공하는 후가공단계가 순차적으로 진행되는 것을 특징으로 한다.In addition, after the demoulding step of separating the mold to withdraw the casting, the annealing step of air cooling at 600 degrees Celsius for 4 to 5 hours, and the post-processing step of processing the cylinder bore, etc. are sequentially performed.

또한, 실린더블록 하부형 캐비티가 형성된 주형하형을 제조하는 단계 및 실린더블록 상부형 캐비티가 형성된 주형상형을 제조하는 단계는 동시에 진행되는 것을 특징으로 한다.In addition, the step of manufacturing a mold lower mold with a cylinder block lower cavity is formed and the step of producing a mold mold with a cylinder block upper cavity formed is characterized in that it proceeds simultaneously.

본 발명 건설기계 실린더블록용 주형은, 주형상형과 주형하형을 포함하며, 주형상형의 상부에는 주탕구가 형성되고, 주형하형 위에 주형상형을 결합한 주형, 주형상형의 중앙 내부 하면에 건설기계용 실린더블록의 상부몸체 형상을 가지는 상부캐비티가 형성되고, 주형하형의 중앙 내부 상면에 건설기계용 실린더블록의 하부몸체 형상을 가지는 하부캐비티가 형성된 캐비티, 캐비티 중앙을 상,하로 관통하여 구비된 축공용중자로 이루어진 것을 특징으로 한다.The mold for a cylinder block of a construction machine of the present invention includes a mold shape and a mold lower mold, and a casting hole is formed on the upper portion of the mold mold, and the mold for combining the mold shape on the mold lower mold and the cylinder for the construction machine on the central inner lower surface of the mold shape An upper cavity having an upper body shape of a block is formed, and a cavity having a lower cavity having a lower body shape of a cylinder block for a construction machine is formed on a central inner upper surface of a mold lower mold, and a shaft hole provided by penetrating the center of the cavity up and down It is characterized by consisting of a ruler.

본 발명 건설기계 실린더블록용 주형 및 제조방법은, 짧은 주형제작공정으로 가공이 단순화되어 수축공 발생 및 제품의 균열과 같은 불량률을 현저하게 줄일 수 있는 효과 및 제품의 치수불량율을 줄일 수 있으며, 종래 주형과 비교하여 전체적인 중자의 개수가 줄어듦에 따라 주형제작비 절감 및 작업효율을 높일 수 있는 효과 및 구성의 간소화, 컴팩트화를 실현하여, 유지 보수를 용이하게 할 수 있는 효과, 취출 불량 등이 없는 고품질의 주형을 조형할 수 있는 효과, 주물의 품질이 균일하여 신뢰성을 향상시키는 효과, 주형작업을 정밀하게 유지할 수 있도록 함과 아울러 공정의 효율성 및 작업의 용이성이 확보되면서, 생산성이 향상되며, 더불어서 높은 강도를 가지면서, 가스발생이 최소화되어 주물의 결함 또한 최소화되는 효과가 있다.The mold and manufacturing method for the cylinder block of the construction machine of the present invention is simplified by a short mold manufacturing process, so that it is possible to significantly reduce the defect rate, such as shrinkage hole generation and product cracking, and reduce the dimensional defect rate of the product. Compared to the mold, as the total number of cores is reduced, the effect of reducing the mold production cost and improving the work efficiency and simplification of the configuration and realization of compactness, the effect of facilitating maintenance, and high quality without defects The effect of molding the mold, the effect of improving the reliability by uniform quality of the casting, while maintaining the precision of the mold operation, and the process efficiency and ease of operation are secured, productivity is improved, and high While having strength, gas generation is minimized, so there is an effect of minimizing defects in castings.

도 1은 주조 및 후처리공정을 거쳐 완성된 건설기계용 실린더 블록의 사시도.
도 2는 종래 실린더블록용 중자가 결합된 상태의 사시도.
도 3은 종래 실린더블록 중자상형의 사시도.
도 4는 종래 실린더블록 중자하형의 사시도.
도 5는 종래 실린더블록의 주조상태 단면도.
도 6은 본 발명 주형를 이용한 건설기계 실린더블록 주조상태의 단면도.
도 7은 본 발명 주형으로 제조된 건설기계 실린더블록 주물의 사시도.
도 8은 본 발명 건설기계 실린더블록용 주형 제조방법의 순서도.1 is a perspective view of a cylinder block for a construction machine completed through a casting and post-treatment process.
Figure 2 is a perspective view of a conventional core for a cylinder block combined.
Figure 3 is a perspective view of a conventional cylinder block middle-shaped.
Figure 4 is a perspective view of a conventional cylinder block heavy weight type.
Figure 5 is a cross-sectional view of a conventional cylinder block casting.
Figure 6 is a cross-sectional view of the construction machine cylinder block casting state using the present invention mold.
7 is a perspective view of a construction machine cylinder block casting made of the present invention mold.
8 is a flow chart of a method for manufacturing a mold for a cylinder block of a construction machine according to the present invention.

본 발명의 바람직한 실시 예를 첨부된 도면을 참조하여 상세히 설명한다. 참고로, 본 발명을 설명하는데 참조하는 도면에 도시된 구성요소의 크기, 선의 두께 등은 이해의 편의상 다소 과장되게 표현되어 있을 수 있다. A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. For reference, the size of a component, the thickness of a line, and the like shown in the drawings referred to in describing the present invention may be expressed somewhat exaggerated for convenience of understanding.

또, 본 발명의 설명에 사용되는 용어들은 본 발명에서의 기능을 고려하여 정의한 것이므로 사용자, 운용자 의도, 관례 등에 따라 달라질 수 있다. 따라서, 이 용어에 대한 정의는 본 명세서의 전반에 걸친 내용을 토대로 내리는 것이 마땅하다.In addition, the terms used in the description of the present invention are defined in consideration of functions in the present invention, and thus may vary according to a user, an operator's intention, and customs. Therefore, it is reasonable to define the terminology based on the contents of the present specification.

그리고 본 출원에서, '포함하다', '가지다' 등의 용어는 명세서 상에 기재된 특정의 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것이 존재함을 지칭하는 것이지, 하나 또는 그 이상의 다른 특징이나 숫자, 단계, 동작, 구성요소, 부품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.And, in the present application, the terms 'include', 'have', etc., refer to the existence of a specific number, step, operation, component, part, or a combination thereof described in the specification, and one or more other It should be understood that features or numbers, steps, actions, components, parts, or combinations thereof are not excluded in advance.

또한, 본 발명은 이하에서 개시되는 실시 예에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시 예는 본 발명의 개시가 완전하도록 하며, 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이다.In addition, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments make the disclosure of the present invention complete, and the scope of the invention to those skilled in the art. It is provided to inform you completely.

그러므로, 본 발명은 다양한 변경을 가할 수 있고 여러 가지 형태를 가질 수 있는바, 구현 예(態樣, aspect)(또는 실시 예)들을 명세서에 상세하게 설명하고자 한다. 그러나 이는 본 발명을 특정한 개시 형태에 대해 한정하려는 것이 아니며, 본 발명의 기술적 사상에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 하고, 본 명세서에서 사용한 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함한다. Therefore, the present invention can be applied to various changes and may have various forms, and thus, an implementation example (態 樣, aspect) (or an embodiment) will be described in detail in the specification. However, this is not intended to limit the present invention to a specific disclosure form, and it should be understood that all modifications, equivalents, and substitutes included in the technical spirit of the present invention are included, and the expressions of the singular numbers used herein are clearly different in context. Unless you mean it, include plural expressions.

다만, 본 발명을 설명함에 있어서, 주지 또는 공지된 기능 혹은 구성에 대한 구체적인 설명은 본 발명의 요지를 명료하게 하기 위하여 생략하기로 한다However, in describing the present invention, detailed descriptions of well-known or known functions or configurations will be omitted to clarify the gist of the present invention.

이하에서 본 발명의 구체적인 실시 예를 도면을 참고하여 설명한다.Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

도 6은 본 발명 주형를 이용한 건설기계 실린더블록 주조상태의 단면도, 도 7은 본 발명 주형으로 제조된 건설기계 실린더블록 주물의 사시도이다.Figure 6 is a cross-sectional view of a construction machine cylinder block casting state using the present invention mold, Figure 7 is a perspective view of a construction machine cylinder block casting made of the present invention mold.

도시된 바와 같이 본 발명은 주형(M), 캐비티(C), 축공용중자(221)를 포함하여 이루어져 있다.As shown, the present invention includes a mold (M), a cavity (C), and a shaft core 221.

주형(M)는, 주형상형(M1)과 주형하형(M2)을 포함하며, 주형상형(M1)의 상부에는 주탕구(230)가 형성되어 있어, 용탕을 주입할 수 있으며, 주형하형(M2) 위에 주형상형(M1)을 결합함으로써, 주형이 완성된다.The mold M includes a mold mold M1 and a mold mold M2, and a pouring hole 230 is formed on the top of the mold mold M1, so that molten metal can be injected, and the mold mold M2 ) The mold is completed by combining the mold shape M1 on top.

캐비티(C)는, 주형상형(M1)의 중앙 내부 하면에 건설기계용 실린더블록의 상부몸체 형상을 가지는 상부캐비티(C1)와 주형하형(M2)의 중앙 내부 상면에 건설기계용 실린더블록의 하부몸체 형상을 가지는 하부캐비티(C2)를 포함한다.Cavity (C), the lower part of the cylinder block for the construction machine on the central inner upper surface of the upper cavity (C1) and the lower mold (M2) having the upper body shape of the cylinder block for construction machinery on the central inner lower surface of the mold (M1) It includes a lower cavity (C2) having a body shape.

축공용중자(221)는, 캐비티(C) 중앙을 상,하로 관통하는 형상으로 구비된다.The shaft hole core 221 is provided in a shape penetrating the center of the cavity C up and down.

이와 같은 구조를 갖는 주형의 주탕구(230)에 용탕을 주입함으로써, 실린더가 구비되지 않고, 축공만이 구비된 건설기계용 실린더블록의 주물이 완성된다.By injecting molten metal into the pouring hole 230 of the mold having such a structure, the cylinder block is not provided, and the casting of the cylinder block for the construction machine equipped with only the shaft hole is completed.

이 후 드릴 등을 이용한 후가공이 진행되는 것은 물론이며, 후가공 시 편심된 실린더공이 존재하지 않으므로, 드릴이 편심된 실린더공에 의하여 휘어져서 파손되는 것을 최소화할 수 있다.
또한 축공용중자(221)의 중앙에는 경사단차부가 형성되어 있어, 주형의 탈형을 용이하게 하고 있다.After this, the post-processing using a drill or the like proceeds, and since there is no eccentric cylinder hole during post-processing, it is possible to minimize the damage of the drill by bending by the eccentric cylinder hole.
In addition, an inclined step portion is formed in the center of the shaft 221 for the shaft hole, thereby facilitating demolding of the mold.

도 8은 본 발명 건설기계 실린더블록용 주형 제조방법의 순서도이다.8 is a flow chart of a method for manufacturing a mold for a cylinder block of a construction machine according to the present invention.

도시된 건설기계 실린더블록용 주형 제조방법은 본 발명의 중요한 특징이 되는 구성이다.The illustrated method for manufacturing a mold for a cylinder block for construction machinery is an important feature of the present invention.

먼저 실린더블록 하부형 캐비티가 형성된 주형하형을 제조하는 단계(S1)를 실행한다.First, a step (S1) of manufacturing a mold lower mold having a cylinder block lower cavity is performed.

그 다음 실린더블록 상부형 캐비티가 형성된 주형상형을 제조하는 단계(S2)를 실행한다.Then, a step (S2) of manufacturing a mold shape having a cylinder block upper cavity is performed.

상기 (S1)단계 및 (S2)단계는 동시에 제조하여도 되고 순차적으로 제조할 수도 있음은 물론이다.It goes without saying that the steps (S1) and (S2) may be performed simultaneously or sequentially.

그 다음 실린더블록 축공용 중자를 제조하는 단계(S3)를 진행한다.Then, a step (S3) of manufacturing a core for a cylinder block shaft hole is performed.

다음으로 주형하형의 캐비티 중앙에 축공용 중자를 설치하는 단계(S4)를 진행하고, 순차적으로 주형하형에 주형상형을 결합하는 단계(S5)를 진행한다.Next, a step (S4) of installing a core for a shaft hole in the center of the cavity of the mold lower mold is performed, and a step (S5) of sequentially combining the mold mold with the mold lower mold is performed.

그 다음 용탕을 주탕구에 주입하는 주조단계(S6)를 진행하고, 다음으로 주형를 분리하여 주물을 인출하는 탈형단계(S7)를 진행하며,Then, the casting step (S6) of injecting the molten metal into the pouring hole proceeds, and then the demoulding step (S7) of separating the mold to withdraw the casting is performed.

다음으로 섭씨 600도에서 4 ~ 5 시간 공냉하는 어닐링단계(S8)를 진행한 다음, 실린더 보어 등을 가공하는 후가공단계(S9)를 순차적으로 진행하여 건설기계용 실린더블록의 제작을 완료한다.Next, an annealing step (S8) of air cooling at 600 degrees Celsius for 4 to 5 hours is performed, and then a post-processing step (S9) of processing cylinder bore, etc. is sequentially performed to complete production of a cylinder block for construction machinery.

상기와 같은 건설기계 실린더블록용 주형 제조방법은, 짧은 주형제작공정으로 가공이 단순화되어 수축공 발생 및 제품의 균열과 같은 불량률을 현저하게 줄일 수 있는 효과 및 제품의 치수불량율을 줄일 수 있으며, 종래 주형과 비교하여 전체적인 중자의 개수가 줄어듦에 따라 주형제작비 절감 및 작업효율을 높일 수 있는 효과 및 구성의 간소화, 컴팩트화를 실현하여, 유지 보수를 용이하게 할 수 있는 효과, 취출 불량 등이 없는 고품질의 주형을 조형할 수 있는 효과, 주물의 품질이 균일하여 신뢰성을 향상시키는 효과, 주형작업을 정밀하게 유지할 수 있도록 함과 아울러 공정의 효율성 및 작업의 용이성이 확보되면서, 생산성이 향상되며, 더불어서 높은 강도를 가지면서, 가스발생이 최소화되어 주물의 결함 또한 최소화되는 효과가 있다.The method for manufacturing a mold for a cylinder block for a construction machine as described above is simplified by a short mold manufacturing process, and can reduce the defect rate such as the occurrence of shrinkage holes and cracks in the product, and reduce the dimensional defect rate of the product. Compared to the mold, as the total number of cores is reduced, the effect of reducing the mold production cost and improving the work efficiency and simplification of the configuration and realization of compactness, the effect of facilitating maintenance, and high quality without defects The effect of molding the mold, the effect of improving the reliability by uniform quality of the casting, while maintaining the precision of the mold operation, and the process efficiency and ease of operation are secured, productivity is improved, and high While having strength, gas generation is minimized, so there is an effect of minimizing defects in castings.

M:주형 M1:주형상형
M2:주형하형 C:캐비티
C1:상부캐비티 C2:하부캐비티
10:실린더블록 11:실린더
12:축공 221:축공용중자
230:주탕구 M: Mold M1: Mold
M2: Lower mold C: Cavity
C1: Upper cavity C2: Lower cavity
10: Cylinder block 11: Cylinder
12: shaft hole 221: shaft hole core
230: Jutgu

Claims (4)

실린더블록 하부형 캐비티가 형성된 주형하형을 제조하는 단계(S1),
실린더블록 상부형 캐비티가 형성된 주형상형을 제조하는 단계(S2),
실린더블록 축공용 중자를 제조하는 단계(S3),
주형하형의 캐비티 중앙에 축공용 중자를 설치하는 단계(S4),
주형하형에 주형상형을 결합하는 단계(S5),
용탕을 주탕구에 주입하는 주조단계(S6),
주형을 분리하여 주물을 인출하는 탈형단계(S7)가 순차적으로 진행되되;
주형을 분리하여 주물을 인출하는 탈형단계(S7) 이후에,
섭씨 600도에서 4 ~ 5 시간 공냉하는 어닐링단계(S8),
실린더 보어 등을 가공하는 후가공단계(S9)가 순차적으로 진행되고,
상기 실린더블록 하부형 캐비티가 형성된 주형하형을 제조하는 단계(S1) 및 실린더블록 상부형 캐비티가 형성된 주형상형을 제조하는 단계(S2)는 동시에 진행되며,
축공용중자(221)의 중앙에는 경사단차부가 형성되어, 주형의 탈형을 용이하게 하는 것을 특징으로 하는 건설기계 실린더블록용 주형의 제조방법.Manufacturing a mold lower mold with a cylinder block lower cavity is formed (S1),
Step (S2) for manufacturing a mold shape with a cylinder block upper cavity is formed,
Manufacturing a core for the cylinder block shaft hole (S3),
Step of installing a core for the shaft hole in the center of the cavity of the lower mold (S4),
The step of combining the mold shape to the lower mold (S5),
Casting step of injecting molten metal into the pouring hole (S6),
The demoulding step (S7) of separating the mold and drawing the casting proceeds sequentially;
After the demoulding step (S7) of separating the mold to withdraw the casting,
Air-annealing step (S8) for 4-5 hours at 600 degrees Celsius,
Post-processing step (S9) to process the cylinder bore, etc. is sequentially carried out,
The step (S1) of manufacturing a mold lower mold having a cylinder block lower-type cavity and the step (S2) of manufacturing a mold-shaped mold with a cylinder block upper-type cavity are simultaneously performed,
A method of manufacturing a mold for a cylinder block of a construction machine, characterized in that an inclined stepped portion is formed at the center of the shaft 221 for the shaft hole to facilitate demoulding of the mold. 삭제delete 삭제delete 삭제delete
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102352381B1 (en) 2021-10-19 2022-01-17 이병국 A method for forming a core for an integrated turbine housing and a method for casting a turbine housing using a core for a turbine housing formed by the forming method
KR102352377B1 (en) 2021-10-19 2022-01-17 이병국 Cylinder core molding apparatus for bearing housing, cylinder core molding method using the same, and bearing housing casting method using the cylinder core molded by the molding method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100270902B1 (en) 1997-08-30 2000-11-01 정몽규 Method of producting a linerless cylinder block by low-pressure casting
JP2001259790A (en) * 2000-03-14 2001-09-25 Asahi Tec Corp Method for manufacturing casting intermediate stock for machining, method for manufacturing casting intermediate stock for cylinder block, casting intermediate stock for machining and casting intermediate stock for cylinder block
KR101340988B1 (en) * 2011-12-07 2013-12-13 이장희 Method for Manufacturing Piston Ring of Die Casting Machine and Piston Ring Made by the Method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100270902B1 (en) 1997-08-30 2000-11-01 정몽규 Method of producting a linerless cylinder block by low-pressure casting
JP2001259790A (en) * 2000-03-14 2001-09-25 Asahi Tec Corp Method for manufacturing casting intermediate stock for machining, method for manufacturing casting intermediate stock for cylinder block, casting intermediate stock for machining and casting intermediate stock for cylinder block
KR101340988B1 (en) * 2011-12-07 2013-12-13 이장희 Method for Manufacturing Piston Ring of Die Casting Machine and Piston Ring Made by the Method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102352381B1 (en) 2021-10-19 2022-01-17 이병국 A method for forming a core for an integrated turbine housing and a method for casting a turbine housing using a core for a turbine housing formed by the forming method
KR102352377B1 (en) 2021-10-19 2022-01-17 이병국 Cylinder core molding apparatus for bearing housing, cylinder core molding method using the same, and bearing housing casting method using the cylinder core molded by the molding method

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