Dynamic characteristics analysis and experimental verification of high-speed precision punch press based on coupled thermal-mechanical model

摘要

In order to analyze the impact load after collision of joints with clearance, dynamic model was established for a type of multilink high-speed precision punch press. We compared the load of joints under different dynamic models with clearance or not. Based on the material characteristic and load spectrum of joints with clearance, the models of heat production between joints were founded to calculate the heating power between joints affected by impact load. Moreover, to calculate actual operating temperature of the joints, the heat balance equation of joints was established according to the condition of lubricating and cooling. Lastly, we did experiments on testing the actual temperature of joints during working to check out whether the dynamical analysis and theoretical calculation of heat balance equation were correct or not.