KR20210002905A - Manufacturing method of plate spring capable of controlling the strength of elastic modulus - Google Patents

Manufacturing method of plate spring capable of controlling the strength of elastic modulus Download PDF

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Publication number
KR20210002905A
KR20210002905A KR1020190078754A KR20190078754A KR20210002905A KR 20210002905 A KR20210002905 A KR 20210002905A KR 1020190078754 A KR1020190078754 A KR 1020190078754A KR 20190078754 A KR20190078754 A KR 20190078754A KR 20210002905 A KR20210002905 A KR 20210002905A
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South Korea
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composite material
mold plate
manufacturing
leaf spring
spring
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KR1020190078754A
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Korean (ko)
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이정규
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이정규
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Priority to KR1020190078754A priority Critical patent/KR20210002905A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/366—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers made of fibre-reinforced plastics, i.e. characterised by their special construction from such materials
    • F16F1/368—Leaf springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2224/00—Materials; Material properties
    • F16F2224/02—Materials; Material properties solids
    • F16F2224/0241—Fibre-reinforced plastics [FRP]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/40—Multi-layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2238/00—Type of springs or dampers
    • F16F2238/02—Springs
    • F16F2238/022—Springs leaf-like, e.g. of thin, planar-like metal

Abstract

The present invention relates to a method for manufacturing a leaf spring for an automobile. More particularly, the present invention is to provide a method for manufacturing a leaf spring for an automobile, which can reduce the weight of the leaf spring and easily manufacture the elastic modulus of the elastic spring by winding a durable composite material wound on several rollers on an outer circumferential surface of a mold plate manufactured in a shape similar to the shape of the leaf spring so that it can be stacked at once while arbitrarily adjusting the tension strength thereof to manufacture a leaf spring by taking out from the mold plate to produce a leaf spring after the composite material is completely hardened.

Description

탄성계수의 세기 조절이 가능한 판스프링 제조방법{Manufacturing method of plate spring capable of controlling the strength of elastic modulus}Manufacturing method of plate spring capable of controlling the strength of elastic modulus}

본 발명은 판스프링 제조방법에 관한 것으로, 특히 금형판의 외주면에 복합재질을 감아 그 인장력을 이용하여 탄성력을 얻을 수 있게 함으로써, 탄성계수의 세기를 임의로 조절할 수 있는 판스프링 제조방법에 관한 것이다.The present invention relates to a method for manufacturing a plate spring, and in particular, relates to a method for manufacturing a plate spring capable of arbitrarily adjusting the strength of the elastic modulus by winding a composite material around the outer circumferential surface of a mold plate to obtain an elastic force using the tensile force.

일반적으로 판스프링은 소정의 두께를 갖는 판체 형상이 하나 또는 그 이상이 서로 겹쳐져서 반타원 형태로 구배지게 하여 휨 작용을 이용해 탄성력을 얻게 되며, 자동차의 차체와 차축 사이에 부착되어 완충역할을 하는데 많이 이용된다.In general, leaf springs have one or more plate shapes having a predetermined thickness overlap each other and bend in a semi-ellipse shape to obtain elastic force through the bending action, and are attached between the vehicle body and the axle to act as a buffer. It is used a lot.

이러한 판스프링은, 첨부도면 1에서 보는 바와 같이, 얇은 판체 형태로 제조된 금형판(10)을 탄성력의 세기를 고려하여 여러 장이 겹쳐진 상태로 단조가공을 통한 소성변형을 유도하여 제조하게 된다.Such a leaf spring is manufactured by inducing plastic deformation through forging processing in a state in which several sheets are overlapped in consideration of the strength of the elastic force of the mold plate 10 manufactured in the form of a thin plate, as shown in the attached drawing 1.

그러나, 기존의 제조방법으로 탄성계수가 큰 판스프링을 제조하기 위해서는 많은 수의 얇은 복합재료를 적층시켜서 제조해야 하기 때문에, 탄성스프링의 자중이 많이 나가게 되고, 또한 이 탄성스프링이 외부에 장시간 동안 노출되면 내구성이 떨어지게 되어, 이에 대한 개선이 필요하게 되었다.However, in order to manufacture a leaf spring having a large elastic modulus by the conventional manufacturing method, a large number of thin composite materials must be laminated to manufacture it, so the self-weight of the elastic spring is increased, and the elastic spring is exposed to the outside for a long time. If so, the durability is deteriorated, and there is a need for improvement.

본 발명은 상기와 같은 점을 감안하여 안출한 것으로, 판스프링의 형상과 유사한 형태로 제조된 금형판의 외주면에 여러개의 롤러에 감겨진 내구성이 강한 복합재료를 한꺼번에 적층가능하도록 감으면서 그 장력의 세기를 임의로 조절하여, 복합재료가 완전히 굳은 다음 금형판으로부터 빼내어 판스프링을 제조함으로써, 판스프링의 무게를 경량화 할 수 있을 뿐만 아니라 이 탄성스프링이 갖는 탄성계수를 임의로 쉽게 제조할 수 있는 자동차용 판스프링의 제조방법을 제공하는데 그 목적이 있다.The present invention was conceived in consideration of the above points, and a durable composite material wound around several rollers on the outer circumferential surface of a mold plate manufactured in a shape similar to the shape of a plate spring is wound so that it can be stacked at once, By arbitrarily adjusting the strength, the composite material is completely hardened, and then removed from the mold plate to manufacture a leaf spring, not only can the weight of the leaf spring be reduced, but also the elastic modulus of this elastic spring can be arbitrarily easily manufactured. Its purpose is to provide a method of manufacturing a spring.

이상에서 본 바와 같이 본 발명은 소정의 두께를 갖는 금형판의 외주면에 여러겹이 겹쳐진 복합재료를 일정한 장력을 유지하도록 감아 충분히 경화시킨 후 그 양단에 각각 설치브라켓을 일체로 하여 판스프링을 제조함으로써, 판스프링의 제조 전에 미리 복합재료의 장력을 조절하여 탄성계수를 임의로 조절할 수 있을 뿐만 아니라 그 무게를 경량화 할 수 있는 장점이 있다.As seen above, the present invention manufactures a plate spring by winding a composite material overlapping several layers on the outer circumferential surface of a mold plate having a predetermined thickness to maintain a constant tension and sufficiently hardening it, and then integrally with the mounting brackets at both ends thereof. In addition, the elastic modulus can be arbitrarily adjusted by adjusting the tension of the composite material before manufacturing the leaf spring, and the weight can be reduced.

도 1은 종래의 판스프링의 제조방법을 간략하게 나타내는 개략도,
도 2는 본 발명에 따른 판스프링의 제조방법을 나타내는 개략도.1 is a schematic diagram schematically showing a method of manufacturing a conventional leaf spring;
Figure 2 is a schematic diagram showing a method of manufacturing a leaf spring according to the present invention.

이하, 첨부도면을 참조하여 본 발명의 구성에 대하여 살펴보면 다음과 같다.Hereinafter, a configuration of the present invention will be described with reference to the accompanying drawings.

본 발명은 휨 강성에 대한 판스프링의 두께와 크기를 고려하여 금형판(10)을 제작하는 과정과, 이 금형판(10)의 외주면에 여러개의 롤러(30)에 각각 감겨진 복합소재(20)를 소정의 장력을 가지도록 한꺼번에 감아 적층하는 과정과, 이 복합재료(20)가 충분히 경화된 다음 그 내부에 끼워진 금형판(10)을 탈거하는 과정으로 이루어진 것을 특징으로 한다.The present invention is a process of manufacturing a mold plate 10 in consideration of the thickness and size of a plate spring for flexural stiffness, and a composite material 20 wound around a plurality of rollers 30 on the outer circumferential surface of the mold plate 10, respectively. ) Is wound together to have a predetermined tension and stacked, and after the composite material 20 is sufficiently hardened, the mold plate 10 inserted therein is removed.

본 발명의 바람직한 구현예에서, 상기 금형판(10)은 길이 중간 부분의 양측이 반달형상으로 절개된 설치면(11)이 형성된 것을 특징으로 한다.In a preferred embodiment of the present invention, the mold plate 10 is characterized in that the installation surface 11 is formed in which both sides of the middle part of the length are cut into a half-moon shape.

또한, 상기 복합재(20)료는 탄소섬유를 강화재로 하는 플라스틱계 복합재(CFRP)인 것을 특징으로 한다.In addition, the composite material 20 is characterized in that the plastic-based composite material (CFRP) made of carbon fiber as a reinforcing material.

이를 첨부도면을 참조하여 보다 상세하게 설명하면 다음과 같다.This will be described in more detail with reference to the accompanying drawings as follows.

첨부도면 2는 본 발명에 따른 판스프링의 제조방법을 나타내는 개략도로서, 도면부호 10은 금형판을 나타낸다.Attached Figure 2 is a schematic diagram showing a method of manufacturing a leaf spring according to the present invention, and reference numeral 10 denotes a mold plate.

본 발명은 상기 금형판(10)의 외주면에 복합재료(20)가 소정의 장력을 가지도록 감아 여러겹으로 적층하여서, 무게가 가벼우면서도 복합재료(20)를 감으면서 결정된 장력의 세길에 따라 판스프링의 탄성계수를 임의로 조절가능하도록 한 것이다.In the present invention, the composite material 20 is wound on the outer circumferential surface of the mold plate 10 to have a predetermined tension and laminated in multiple layers, so that the plate according to the length of the determined tension while winding the composite material 20 while the weight is light. The elastic modulus of the spring can be arbitrarily adjusted.

이러한 판스프링의 제조과정은 먼저, 사용하고자 하는 곳에 설치되는 판스프링이 갖는 탄성력을 계산하여 그 세기에 맞는 금형판(10)을 제작하게 된다.이때, 상기 금형판(10)은 여기에 감겨지는 복합재료(20)의 두께를 고려하여 그 두께를 결정하게 된다.In the manufacturing process of such a leaf spring, first, the elastic force of the leaf spring installed in the place to be used is calculated to produce a mold plate 10 suitable for the strength. At this time, the mold plate 10 is wound around it. The thickness of the composite material 20 is determined in consideration of the thickness.

이때, 상기 금형판(10)은 길이방향의 양측 테두리부를 안쪽으로 소정의 곡률을 가지도록 설치면(11)을 절개성형하여, 이 금형판(10)에 복합재료(20)가 감겨짐에 따라 그 두께만큼 폭 길이가 늘어나지 않게 막아주는 것이 바람직하다.At this time, the mold plate 10 is formed by cutting the installation surface 11 so as to have a predetermined curvature inward at both rims in the longitudinal direction, and as the composite material 20 is wound around the mold plate 10 It is desirable to prevent the width and length from increasing by the thickness.

이어, 상기 금형판(10)을 작업대에 설치하여 회전가능하도록 설치하는 동시에 이 금형판(10)을 이 작업대의 롤러에 장력조절이 가능하도록 설치하게 된다.Subsequently, the mold plate 10 is installed on a work table so as to be rotatable, and at the same time, the mold plate 10 is installed on the rollers of the work table to enable tension adjustment.

즉, 상기 작업대는 금형판(10)을 계속 회전시킬 수 있도록 롤러가 구비되어 있으며 그 윗쪽에는 상기 복합재료(20)가 감겨진 상태에서 동시에 풀릴 수 있도록 설치가능한 여러개의 롤러(30)가 구비되어 있으며, 상기 금형판(10)과 롤러(30) 사이에는 이 금형판(10)이 회전함에 따라 복합재료(20)의 장력을 조절할 수 있도록 장력조절수단(40)과 상기 복합재료(20)가 금형판(10)에 부착이 잘되도록 부착제를 발라주는 장치로 이루어진 것이다.That is, the worktable is provided with rollers to continuously rotate the mold plate 10, and a plurality of rollers 30 that can be installed so that the composite material 20 can be simultaneously unwound while the composite material 20 is wound are provided. In addition, between the mold plate 10 and the roller 30, a tension control means 40 and the composite material 20 are provided so as to adjust the tension of the composite material 20 as the mold plate 10 rotates. It consists of a device that applies an adhesive to the mold plate 10 so that it is well attached.

따라서, 상기 복합재료(20)는 길이방향으로 감겨진 상태에서 상기 각 롤러(30)에 하나씩 필요한 갯수 만큼 설치되는 동시에 서로 겹쳐진 상태로 장력조절수단(40)을 경유하여 금형판(10)에 감겨지게 되며, 이때 상기 금형판(10)과 장력조절수단(40) 사이에서 부착제가 칠하여지게 되는 것이다.Therefore, the composite material 20 is installed as many times as necessary on each of the rollers 30, one at a time, while being wound in the longitudinal direction, and wound on the mold plate 10 through the tension adjusting means 40 in a state of being overlapped with each other. At this time, the adhesive is painted between the mold plate 10 and the tension control means 40.

또한, 상기 복합재료(20)는 카본섬유를 강화재로 하는 공강도· 고탄성의 경량 구조재(CFRP)를 이용하여, 탄성스프링의 무게를 최소화 하면서 외부에 노출된 경우에도 내식성과 진동감쇠성 등을 높일 수 있게 하는 것이 바람직하다.In addition, the composite material 20 uses a lightweight structural material (CFRP) of high strength and elasticity made of carbon fiber as a reinforcing material, minimizing the weight of the elastic spring and improving corrosion resistance and vibration damping properties even when exposed to the outside. It is desirable to be able to.

이와 같이 복합재료(20)가 감겨질 수 있도록 준비된 상태에서 상기 금형판(10)을 회전시키면서 장력조절수단(40)을 이용하여 원하는 탄성계수를 가지도록 복합재료(20)를 잡아 당겨 감아 주게 된다.As described above, while the mold plate 10 is rotated in a state in which the composite material 20 is prepared to be wound, the composite material 20 is pulled and wound to have a desired modulus of elasticity by using the tension control means 40. .

마지막으로, 이렇게 감겨진 복합재료(20)가 충분히 경화될 때까지 두었다가 이 금형판(10)으로부터 경화된 복합재료(20)를 탈거하여 판스프링을 제조하게 되며, 이 개구된 양측에는 각각 미도시된 스틸제로 이루어진 설치브라켓 등을 끼워 마무리 공정을 마치게 되는 것이다.Finally, the wound composite material 20 is left until it is sufficiently hardened, and then the cured composite material 20 is removed from the mold plate 10 to manufacture a plate spring, and both sides of the opening are not shown. The finishing process is completed by inserting an installation bracket made of steel.

이와 같이 이루어진 판스프링은 상기 각 설치브라켓을 이용하여 차량의 후륜 등과 같이 판스프링을 필요로 하는 부위에 설치하게 된다.The leaf spring made in this way is installed in a portion requiring the leaf spring, such as a rear wheel of a vehicle, using each of the installation brackets.

10 : 금형판11 : 설치면
20 : 복합재료30 : 롤러
40 : 장력조절장치10: mold plate 11: mounting surface
20: composite material 30: roller
40: tension control device

Claims (3)

휨 강성에 대한 판스프링의 두께와 크기를 고려하여 금형판(10)을 제작하는 과정과, 이 금형판(10)의 외주면에 여러개의 롤러(30)에 각각 감겨진 복합소재(20)를 소정의 장력을 가지도록 한꺼번에 감아 적층하는 과정과, 이 복합재료(20)가 충분히 경화된 다음 그 내부에 끼워진 금형판(10)을 탈거하는 과정으로 이루어진 것을 특징으로 하는 탄성계수의 세기 조절이 가능한 판스프링 제조방법.The process of manufacturing the mold plate 10 in consideration of the thickness and size of the plate spring for flexural stiffness, and a composite material 20 wound on a plurality of rollers 30 on the outer circumferential surface of the mold plate 10 respectively. A plate capable of adjusting the strength of the elastic modulus, characterized in that it consists of a process of winding and laminating all at once to have a tension of, and removing the mold plate 10 inserted therein after the composite material 20 is sufficiently hardened. Spring manufacturing method. 제 1 항에 있어서, 상기 금형판(10)은 길이 중간 부분의 양측이 반달형상으로 절개된 설치면(11)이 형성된 것을 특징으로 하는 탄성계수의 세기 조절이 가능한 판스프링 제조방법.The method of claim 1, wherein the mold plate (10) has mounting surfaces (11) in which both sides of an intermediate length thereof are cut in a half-moon shape. 제 1 항에 있어서, 상기 복합재(20)료는 탄소섬유를 강화재로 하는 플라스틱계 복합재(CFRP)인 것을 특징으로 하는 탄성계수의 세기 조절이 가능한 판스프링 제조방법.The method of claim 1, wherein the composite material (20) is a plastic composite material (CFRP) made of carbon fiber as a reinforcing material.
KR1020190078754A 2019-07-01 2019-07-01 Manufacturing method of plate spring capable of controlling the strength of elastic modulus KR20210002905A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022100080U1 (en) 2021-01-08 2022-03-08 Lg Energy Solution, Ltd. Electrode cutting device

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