Thermo-Mechanical Coupling Analysis of the Actuating Mechanism in a High Speed Press

  • Jin Cheng
  • Zhendong Zhou
  • Yixiong Feng
  • Zhenyu Liu
  • Yangyan Zhang
Regular Paper


In order to ensure the manufacturing precision of an ultra-precision high speed press, an integrated thermo-mechanical coupling model of its actuating mechanism is proposed, which includes the mechanical models of the slider and crankshaft, the thermal models for calculating the heat generation powers at different bearings as well as the heat transfer and heat dissipation in the actuating mechanism. The validity of the proposed thermo-mechanical coupling model is verified by a thermal equilibrium experiment when the press operates under the full load of 3000kN at 300 rpm. A sensitivity analysis is conducted to investigate the simulation errors resulting from the variation of the ambient temperature, the results of which demonstrate that the average ambient temperature should be applied for improving simulation accuracy. Then the thermal stiffness of the actuating mechanism and the thermo-mechanical coupling characteristics of different parts are analyzed by the proposed model with the average ambient temperature applied. The influences of the thermally induced loads on the thermal stiffness are discussed in detail. It is concluded that the temperature rise of the actuating mechanism in the stamping process of a high speed press should be fully considered in the design phase for ensuring its manufacturing precision.


Actuating mechanism High speed press Thermo-mechanical coupling analysis Thermal-mechanical coupling model Thermal stiffness 



impact load on lower surface of slider


total equivalent force of slider


uniformly distributed load


heat generation power of sliding bearing


friction factor of sliding bearing


radial force exerted on sliding bearing


average pressure exerted on sliding bearing


relative peripheral velocity of sliding bearing


relative rotary speed of sliding bearing


heat generation power of roller bearing


rotary speed of roller bearing


total friction torque of roller bearing


load torque


viscous friction torque




average diameter of roller bearing


radial load exerted on roller bearing


equivalent static load


kinematic viscosity of lubricant


convective heat transfer coefficient


thermal conductivity


angular velocity of crankshaft


specific heat capacity of fluid


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Copyright information

© Korean Society for Precision Engineering and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.State Key Laboratory of Fluid Power & Mechatronic SystemsZhejiang UniversityHangzhouChina
  2. 2.Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of EducationHarbin Institute of TechnologyHarbinChina

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