The objective of the present invention is to provide a method to manufacture a jack main body capable of monitoring a lift. According to the method of manufacturing the jack main body which is inserted between a pair of bearing plates and is expanded or contracted in accordance to an injection state of an injection material; the method has a process of forming a pair of processed products by performing a spinning process to a flat steel sheet, and a process of processing the jack main body by welding end planes of the processed goods with each other. The thickness of the steel sheet is 0.8 mm or greater, and 2.6 mm or less. As such, it is easy to monitor the lift of the jack main body by being easy to change the lift of the jack main body as an internal pressure of the jack main body increases by setting the above thickness of the steel sheet. Moreover, the method is able to manufacture the jack main body by performing a spinning process to the steel sheet of the above mentioned thickness.

    본 발명은 양력을 감시할 수 있는 잭 본체를 제조하는 방법을 제공하는 것을 과제로 한다. 한 쌍의 지압판에 의하여 사이에 끼워지고, 주입재의 주입상태에 따라서 팽창 및 수축하는 잭 본체의 제조방법에 있어서, 평판형상의 강판에 대하여 스피닝 가공을 행함으로써, 한 쌍의 가공품을 성형하는 공정과, 한 쌍의 가공품의 끝면을 서로 접촉시켜 용접함으로써, 잭 본체를 가공하는 공정을 가진다. 강판의 두께를 0.8mm 이상이며 2.6mm 이하로 한다. 이와 같이 강판의 두께를 설정함으로써, 잭 본체의 내부 압력 상승에 대하여, 잭 본체의 양력을 변화시키기 쉬워져서, 잭 본체의 양력을 감시하기 쉬워진다. 또한, 상술한 두께의 강판에 대하여는, 스피닝 가공을 행함으로써, 잭 본체를 제조할 수 있다.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    METHOD FOR MANUFACTURING JACK AND BODY OF JACK


    Weitere Titelangaben:

    잭 본체의 제조방법 및 잭의 제조방법


    Beteiligte:

    Erscheinungsdatum :

    2015-12-23


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Koreanisch


    Klassifikation :

    IPC:    B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



    METHOD FOR MANUFACTURING JACK BODY AND METHOD FOR MANUFACTURING JACK

    YAMASHITA KAZUNORI / NISHIOKA MOTOI | Europäisches Patentamt | 2016

    Freier Zugriff

    Universal airplane body jack

    JIANG PENG / JIANG WENLI / FAN LIHONG | Europäisches Patentamt | 2024

    Freier Zugriff

    Truck body lifting jack

    BAI LINGYUN / YANG JUN / SUN JINXIN et al. | Europäisches Patentamt | 2021

    Freier Zugriff

    JACK

    SUZUKI YOSHINORI | Europäisches Patentamt | 2020

    Freier Zugriff

    Jack

    WANG XINYU / YIN ZIHAO | Europäisches Patentamt | 2021

    Freier Zugriff