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| Structural analysis and improvement of the die set of a type of powder forged connecting rod press |
| WANG Ji-zhong，GAO Li，MA Yu-yue |
| School of Mechanical and Automotive Engineering，Qingdao University of Technology，Qingdao 266520，China |
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Abstract The smoothness of powder forming press in the production process directly affects the product quality and production efficiency. Aiming at the problems of large deformation in the die frame of a powder forging connecting rod press, which affects the working stability and product consistency of the press, the assembly model of the die frame is established by using Pro/E three-dimensional modeling software, and the finite element analysis model of the die frame is established by introducing it into ABAQUS finite element analysis software. The stress distribution and displacement of the die frame of the press are analyzed, and the weak links of the structure are found out. On this basis, considering the principle of economy and applicability, a scheme for optimizing and improving the die frame size structure is determined. The distance between the negative template and the lower template is reduced, the size of the lower template and the distance between the guide pillars are appropriately increased, and the diameter of the washer in the die-punching template assembly is increased. After the structure is improved, the maximum stress of the lower one, the lower two and the lower three die punching template components is reduced by 33%, 21% and 43% respectively, and the maximum overall displacement of the mould frame is reduced by 64% compared with that before the improvement. The strength and overall stiffness of the improved die frame have been greatly improved, and the working stability can be effectively improved, which provides a feasible scheme for the actual improvement of the die frame of this press.
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Received: 23 January 2018
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2019, Vol. 29 
