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论文类型：期刊论文

发表时间：2013-08-01

发表刊物：JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY

收录刊物：SCIE、EI

卷号：27

期号：8

页面范围：2435-2443

ISSN号：1738-494X

关键字：Forging manipulator; Passive compliance; Transient response; Manufacturing system

摘要：The bending moment transmitted to the forging manipulator due to press motion during metal forming process is investigated. The dynamic model of the forging manipulator system is established, including the manipulator and the workpiece by using Lagrange equation. The system is modeled as an Euler-Bernoulli beam with spring-mass at the sliding end, which experiences a transient vibration due to displacement excitation. The Winkler foundation model is used to simulate the rotational constraint of the forging dies on the workpiece because of the surface contact. The numerical results are compared with the LS-DYNA simulations, and a good prediction on the bending moment could be obtained with the comparatively simple proposed model. The results indicate that the press position where the forging dies work along the workpiece plays a crucial role for the dynamic bending moment. To further investigate the dynamic effects due to the press motion, the influence of clamp mass of the manipulator is also examined.