Study on the influence of the blank thickness on the dynamic behavior of mechanic eccentric presses

7th Modern Technologies in Industrial Engineering

工业技术（总论）

Burlacu, C.^1

Gheorghe Asachi Technical University of Iasi, Department of Machine Tools, Blvd. Mangeron, No. 59A, Iasi

700050, Romania^1

关键词: Adjusting parameters;    Dynamic behaviors;    Frictional forces;    Generalized Equations;    Graphical interface;    Mechanical press;    Nonlinear evolutions;    Working mechanisms;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/591/1/012043/pdf
DOI  :  10.1088/1757-899X/591/1/012043

学科分类：工业工程学

来源: IOP

【 摘 要 】

This paper presents a method for studying the dynamic behavior of mechanical presses with eccentricity based on a mathematical model. The novelty elements of the proposed model are as follows: the essential non-linear evolution of the force in process; the frictional force in the slider guides is also considered to have a non-linear character; the friction moments in the kinematic chain structure are considered different at start-up compared to the nominal regime and the weight of the slider together with the elements attached to it is taken into account. The equations characterizing the movement of the system were deduced starting from Lagrange's generalized equations. Finally, an interactive graphical interface was developed that allows the study of the influences of some constructive and adjusting parameters on the parameters that characterize the dynamic behavior of the working mechanism: the angular speed, the motor moment and the power consumed by the electric drive motor. The method was applied to the case of PAI 63 press. Based on the results obtained by changing the parameters mentioned above (around the existing values), a serie of conclusions were drawn that could lead to an improvement of the construction and the exploitation. of this machine.