A modular space frame for assessing the performance of co-ordinate measuring machines (CMMs)

被引：0
|
作者：
De Aquino Silva, Joao Bosco [1 ]
Burdekin, M. [2 ]
机构：
[1] Department of Mechanical Engineering, Federal University of Paraiba, João Pessoa -Pb, Brazil
[2] Department of Mechanical Engineering, UMIST, PO Box 66, M60 1QD Manchester, United Kingdom
来源：
Precision Engineering | 2002年 / 26卷 / 01期
关键词：
Calibration - Carbon fibers - Instrument errors - Mathematical models - Precision engineering;
D O I：
10.1016/S0141-6359(01)00096-4
中图分类号：
学科分类号：
摘要：
In the present investigation, a new form of space frame for rapid verification of co-ordinate measuring machines (CMMs) is proposed and applied. This space frame has the form of a tetrahedron and is referred to as a modular space frame as different configurations of tetrahedron can be obtained easily and rapidly. The modular space frame comprises magnetic ball links and a ball plate. A typical magnetic ball link consists of two magnetic cups and a carbon fiber link, connecting magnetically, two high accuracy spheres. The volumetric error data obtained when a CMM measures the calibrated modular space frame can be used to verify whether a CMM maintains the manufacturer specifications. The experimental results have demonstrated that the modular space frame system has an acceptable repeatability and provides a practical and cost effective mechanical artifact to determine the volumetric accuracy of small/medium sized CMMs. The developed technique can be applied for calibration, verification, periodic reverification and acceptance test of any type of CMM. © 2001 Elsevier Science Inc. All rights reserved.
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页码：37 / 48
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