WIT Press


Practical Experience Of Thermal Testing With Reference To IS0 230 Part 3

Price

Free (open access)

Paper DOI

10.2495/LAMDAMAP030411

Volume

44

Pages

12

Published

2003

Size

453 kb

Author(s)

A.P. Longstaff, S. Fletcher & D.G. Ford

Abstract

Thermal errors in machine tools can represent up to 70% of the total positional accuracy of machine tools [l]. The significance of temperature-induced errors led to the introduction of an international standard method of testing for thermal effects [2]. A wide range of machme tools has been measured and assessed by the Ultra Precision Engineering Centre (UPEC) to advise on thermal error avoidance and to implement error correction where appropriate. This paper presents some results taken fiom these machines and discusses the implications for manufactured parts. Attention is also drawn to the problem of distinguishing from the various sources of thermal effects during tests that may take several hours in a variety of workshop conditions. The results suggest that some deviation from the standard can provide more

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