• Title/Summary/Keyword: Brake spider

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An Investigation on the Forging Process of an Irregular Shape Product (비대칭 형상제품의 단조공정에 관한 연구)

  • 정경빈;김현수;최영순;김용조
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.1101-1104
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    • 2004
  • A brake spider in an irregular shape, which is used as a part in the braking system of a vehicle like a big truck and a trailer, is subjected to a large torque and hence requires both strength and endurance over the brake heat. Manufacture of this product in practice is generally composed of hot forging processes and machining. At the present study, two or more processes were considered for the hot forging. With an initial circular billet, blocker and finisher processes were analyzed using the rigid-plastic finite element method and also in addition to the preforming process. Proper forging processes to manufacture an irregular product without forging defects, which are preforming, blocker and finisher, were discussed and commented upon.

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Forging Process Design for Dimensional Accuracy of an Irregular Shape Product (치수 정밀도 향상을 위한 비대칭 정밀제품의 단조공정 설계)

  • 이선홍;최창혁;김성태;김용조
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.10a
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    • pp.1097-1100
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    • 2004
  • A rear axle spider in an irregular shape, which is used as a part in the braking system of a vehicle like a big truck and a trailer, is subjected to a large torque and hence requires both strength and endurance over the brake heat. This part should be therefore manufactured in dimensional accuracy. The practical manufacturing process of this irregular product requires the heat treatment process after hot forging and then the cold coining process for the dimensional accuracy. At the present study, the warm coning without the heat treatment process was proposed to employ the residual heat due to the hot forging process. And also the trimming and piercing process was designed using the rigid-plastic finite element method. The mechanical properties were discussed and also commented upon.

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