Transactions of Materials and Heat Treatment

Title：Design and optimization on multiple direction extrusion die for single throw crankshaft

Authors： Liu Liying Shi Yiqing Xu Chunguo Chen Yujin Zheng Jian Zhang Ya

Unit： Beijing Research Institute of Mechanical & Electrical Technology

KeyWords： single throw crankshaft multiple direction extrusion insert design insert parting surface die design

ClassificationCode：TG316.3

year,vol(issue):pagenumber：2017,42(8):129-134

Abstract：

Multidirectional extrusion of single-throw crankshaft shortens the process greatly and realizes the whole streamline forming comparing with the traditional production method. At the same time, the new technology has also put forward higher requirements on die design in the mass production. According to the characteristics of the multidirectional extrusion die of single-throw crankshaft, the insert of multidirectional die was analyzed and optimized from the perspective of die service environment. Then, "thin insert" and "thick insert" were designed by different locations of the insert parting surface, and then analysis and comparison were carried out deeply by numerical simulation and experimental verification. The results show that the die designed with an insert is feasible. However, the die with thick insert has higher strength and rigidity, and folding can be avoided effectively. But the die with thin insert is easy to appear folding in the experiment. Thus, the die with an insert has important guiding significance to decrease the production cost of single-throw crankshaft and improve the product quality.

Funds：

刘丽英（1991-），女，硕士，助理工程师

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