Transactions of Materials and Heat Treatment

Title：Material economy and design optimization of roll forging blanking die for connecting rod

Authors： WU Yu-chang1 SHI Si-mei1 JU Jie1 YU Jian1 ZHOU Ping-bo1 HU Hong-wei1 FAN Zhi-hong2(1.Technology Department Nanchang Gear Forging Factory Nanchang 330044 China 2.Production Development Center Getrag(Jiangxi) Transmission Co. Ltd. Nanchang 330044 China)

Unit：

KeyWords： connecting rod economizing material roll forging die optimizing design

ClassificationCode：TG316

year,vol(issue):pagenumber：2009,34(5):19-22

Abstract：

Length of each segment on the roll forging piece and cross section area of its rod were redistributed by analyzing the connecting rod and its roll forging piece.Meanwhile,the maximum of material economy and feasibility of process were taken into account synthetically.According to total elongation coefficient of minimum cross section of the new roll forging piece,three different groove systems were chosen to carry out the calculation and analysis respectively.Finally,"ellipse-square-ellipse-square"groove system was selected as optimization scheme of roll forging blanking for the connecting rod and corresponding roll forging die was designed.Both three-dimensional finite element method numerical simulation and actual forging production show that the roll forging result is consistent well with design and blank weight of each connecting rod forging is reduced by 17%.

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Reference：

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