Thermal Analysis of Ballscrew Systems by Explicit Finite Difference Method

被引：8

作者：

Min, Bog-Ki ^{[1
]}

Park, Chun-Hong ^{[2
]}

Chung, Sung-Chong ^{[1
]}

机构：

[1] Hanyang Univ, Dept Mech Engn, Seoul, South Korea

[2] KIMM, Ultra Precis Syst Lab, Daejeon, South Korea

来源：

TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS A | 2016年 / 40卷 / 01期

关键词：

Ballscrew; Convective Heat Transfer Coefficient; Finite Difference Analysis; Friction Torque; Thermal Contact Conductance;

D O I：

10.3795/KSME-A.2016.40.1.041

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Friction generated from balls and grooves incurs temperature rise in the ballscrew system. Thermal deformation due to the heat degrades positioning accuracy of the feed drive system. To compensate for the thermal error, accurate prediction of the temperature distribution is required first. In this paper, to predict the temperature distribution according to the rotational speed, solid and hollow cylinders are applied for analysis of the ballscrew shaft and nut, respectively. Boundary conditions such as the convective heat transfer coefficient, friction torque, and thermal contact conductance (TCC) between balls and grooves are formulated according to operating and fabrication conditions of the ballscrew. Explicit FDM (finite difference method) is studied for development of a temperature prediction simulator. Its effectiveness is verified through numerical analysis.

引用

页码：41 / 51

页数：11

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