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Lu X.,Nanjing Agricultural University | Zhu S.,Nanjing Agricultural University | He G.,Jiangsu Xuzhou Metal Forming Machine Group Co. | Ji Y.,Jiangsu Xuzhou Metal Forming Machine Group Co. | Zhang Y.,Nanjing Agricultural University
Zhongguo Jixie Gongcheng/China Mechanical Engineering | Year: 2011

A multi-link high-speed press kinematics equations was established, and the results of kinematic analysis were also obtained. The results show that: this kind of multi-link high-speed press has the characteristics of small velocity and acceleration near the BDC. And these characteristics are help to reduce the noise generated during blanking and vibration, to improve the accuracy of BDC. Source


Lu X.,Nanjing Agricultural University | Zhu S.,Nanjing Agricultural University | Ke Z.,Jiangsu Xuzhou Metal Forming Machine Group Co. | He G.,Jiangsu Xuzhou Metal Forming Machine Group Co. | Zhou Y.,Nanjing Agricultural University
Proceedings - 3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011 | Year: 2011

Dynamics analysis model has been built, the corresponding computer program for which has been compiled on the basis of Matlab for a multi-link high-speed press. The press being developed is taken as an example to calculate in practice, calculation results of which show that the required torque is lower at the nominal pressure stroke. With constant increasing of crank speed, torque needed for overcoming inertial force will exceed the torque required to overcome the nominal force. In addition, some parts are exposed to a significant increase of inertial forces. Results of the research mentioned above are acceptable for development of the multi-link high-speed press. Source


Lu X.,Nanjing Agricultural University | Zhu S.,Nanjing Agricultural University | Ke Z.,Jiangsu Xuzhou Metal Forming Machine Group Co. | Qin J.,Jiangsu Xuzhou Metal Forming Machine Group Co. | Wei S.,Jiangsu Xuzhou Metal Forming Machine Group Co.
Applied Mechanics and Materials | Year: 2012

The parameterized dynamic simulation model for a multi-link high precision press has been established in the ADAMS software environment based on the displacement equations. The press being developed is taken as an example to study the slider's displacement curves, velocity curves and acceleration curves under different crank radius in practice as well as the working angle curves and torque curves. With the crank radius increasing, the started punching angle comes early and the slider's velocity and acceleration at bottom dead center (B.D.C) decreases significantly which help to improve the accuracy of B.D.C and to lower the torque consumption during stamping. Meanwhile, the increasing of working angle helps to reduce the lateral force acting on the slider, such as the torque required to overcome the inertial forces increases rapidly, the torque needed to overcome the nominal force decreases and the peak of nominal force shifts to the lower left gradually. Results of the research mentioned above are helpful to develop the multi-link high-speed press. Source

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