Design and Research into the Nonlinear Main Vibration Spring in Double-mass High Energy Vibration Milling

Article history: Received: 06.02.2015. Received in revised form: 11.05.2015. Accepted: 15.05.2015. Due to the shortcomings of one mass vibration mill such as inefficiency, high energy consumption and big noise, a double mass high energy vibration mill, in which transient high vibration intensity is produced, is investigated by applying the non linear vibration theory. The nonlinear hard feature variable-pitch spring i0s used in the main vibration system which has the characteristic of the stiffness that can be varied along with the dynamic load. In this way, the goals of operation stabilization and energy saving will be achieved. Results from the field test show that the efficiency is obviously improved, i.e. a 28% increase in the vibration intensity, 10% decrease in energy consumption and 4% decrease in noise. That verifies the correctness of the main vibration system construction. This system can be used by others as a reference design for this field.