Workpiece-fixture static friction under dynamic loading

被引：15

作者：

Hurtado, JF ^{[1
]}

Melkote, SN ^{[1
]}

机构：

[1] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

来源：

WEAR | 1999年 / 231卷 / 01期

基金：

美国国家科学基金会;

关键词：

workpiece fixturing; machining operations; friction;

D O I：

10.1016/S0043-1648(99)00123-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Workpiece fixturing for machining operations often relies on friction to prevent workpiece motion. Since most machining operations involve dynamic loads, a better understanding of the influence of such loading on workpiece-fixture contact friction is desirable. This paper presents the results of an experimental investigation of the effects of normal preload force, vibration amplitude and excitation frequency on the static friction between cast aluminum 357 workpiece material and oxide coated AISI 1144 steel fixture material. A friction tester capable of simulating normal and in-plane dynamic loads was designed and built for the study. Response surface analysis of the experimental data reveals that dynamic loading significantly influences workpiece-fixture static friction. Possible explanations for the observed effects are given. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：139 / 152

页数：14

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