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钳杆是四锤头径向精锻机的主要受力构件,其井字形爪头结构上倒角多且相互影响,应力集中十分明显。利用ANSYS Work Bench平台,对1.6 MN径向精锻机的钳杆进行了结构强度的参数化分析,获得了最大等效应力对倒角参数的敏感性规律,对此类结构的设计有指导意义。以各个倒角半径为优化设计变量,以爪头最大等效应力最小为优化目标,对钳杆进行了优化,给出了最为合理的倒角尺寸值,优化模型较初始设计最大等效应力降低了三分之一,明显降低了应力集中程度,保障了结构的安全。
The clamp rod is the main force component of the four-hammer radial precision forging machine. The chamfer of the well-shaped claw head has many effects and influences each other, and the stress concentration is very obvious. The ANSYS Work Bench was used to analyze the structural strength of the clamp of 1.6 MN radial precision forging machine. The sensitivity of the maximum equivalent stress to chamfering parameters was obtained. It is instructive for the design of this kind of structure . Taking each chamfer radius as the optimal design variable and the maximal equivalent stress of the claw head as the optimization objective, the clamp lever was optimized and the most reasonable chamfer dimension value was given. The maximum equivalent stress of the optimized model was lower than that of the initial design One-third, significantly reducing the degree of stress concentration to protect the structure of the safety.