An Analysis of Unloading for Mechanical Press

Abstract:

In order to analyze the advanced unloading problem of the large-scale press machine under nominal pressure, a straight side four point press of 8000kN has been taken for example. The model of the connector is constructed in Abaqus and the stiffness of the connector has been analyzed. The dynamic model of press machine impacting mechanism is constructed in ADAMS and the constraints is added into the model, meanwhile, the simulation model of the hydraulic protective system of the mechanical press is constructed in AMESim. Finally, the combined simulation of the hydraulic and mechanical system is realized, thus the actual stamping process of mechanical press is accurately simulated. The conclusion shows that the improper pre-pressure selection is the main reason for the unloading problem. And the correct pre-pressure value is obtained.

• Periodical: Advanced Materials Research (Volume 569)
• Pages: 437-441
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.569.437
• Online since: September 2012
• Authors: Chang Long Li, Qing He, Zhi Gang Zhang, Qin He Zhang, Jian Hua Zhang
• Keywords: Advanced Unloading Problem, Combined Simulation, Mechanical Press

References

[1] Li Jianping, Wang Enfu, Mai Zhihui, Huang Jinkun, and Xiong Weihua: EQUIPMENT Vol. 1 (2005), p.35.

[2] Liu Ren: The Pre-pressure Selection of The Mechanical Press( Master's Thesis, JiNan 1991).

[3] G. R. Liu and S. S. Quek, in: The Finite Element Method(Elsevier Science Ltd, London 2003).

[4] Zhao TengLun, in: The application of ABAQUS in mechanical engineering(China Water Conservancy and Hydropower Publishers, BeiJing 2007).

[5] Xie Di and Quan Long: Mining Machinery vol. 27 (2011), p.39.

[6] Liang Lihua, Ning Jipeng, and Shi Hongyu: Machine Tool and Hydraulics vol. 200 (2009), p.37.