Transactions of Materials and Heat Treatment

Title：A novel multi-link high-speed precision punch press mechanism and its thermal effect

Authors： Peng Binbin Ren Aoning Xu Weining

Unit： School of Mechanical Engineering Nanjing University of Science and Technology

KeyWords： punch press mechanism heat dissipation power temperature field thermal deformation bottom dead center

ClassificationCode：TG316

year,vol(issue):pagenumber：2025,50(7):183-191

Abstract：

A multi-link high-speed precision punch press mechanism with horizontal symmetry was proposed, which effectively improved the anti-biased load capacity during stamping and balanced the vertical inertia force by adjusting the mass of vice-slider. Simultaneously, the structural symmetry ensured that the heat generated by the kinematic pairs was symmetrically distributed on both sides, thereby reducing the influence of horizontal thermal imbalance on the precision of the mechanism. Then, the types of kinematic pairs in the multi-link high-speed precision punch press mechanism were analyzed, and their contact forms were classified. Furthermore, based on the relative frictional velocity of the contact surfaces for the main heat-generating parts (kinematic pairs) and the magnitude and direction of load, the heat dissipation power and location of each kinematic pair under no-load and load conditions were calculated. Finally, the temperature field and thermal deformation of the whole multi-link high-speed precision punch press were solved by finite element software, and the thermal deformation of the main and vice sliders at the bottom dead center position and its variation laws versus time were obtained, which provided the theoretical basis for the subsequent thermal balance design of the high-speed precision punch press.

Funds：

国家自然科学基金资助项目(52175016)

作者简介：彭斌彬（1975-），男，博士，副教授 E-mail：pengbinbin2013@126.com

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