Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (Part 5) (First Revision) which is identical with ISO 13041-5 : 2015 ‘Test conditions for numerically controlled turning machines and turning centers - Part 5: Accuracy of speeds and interpolations’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Machine Tools, Machine Tool Elements and Holding Devices Sectional Committee and approval of the Production and General Engineering Division Council.

This standard was originally published in 2006 which was identical with ISO 13041-5 : 2006 ‘Test conditions for numerically controlled turning machines and turning centers - Part 5: Accuracy of speeds and interpolations’. The first revision of this standard has been undertaken to align it with the latest version of ISO 13041-5 : 2015.

The major changes in this revision are as follows:

a) The tolerances in tests AK5, BK5, and CK5, which are reduced from ISO 13041-5 (Test K5) due to improved centering procedure or practical experience that proves that the closer tolerances can be met; and

b) References have been updated. This Indian Standard is published in several parts. The other parts in this series are:

Part 1 General survey, correlation and determination of dimensions

Part 2 Geometric tests for machines with a vertical work holding spindle

Part 3 Geometric tests for machines with inverted vertical work holding spindles

Part 4 Accuracy and repeatability of positioning of linear and rotary axes

Part 6 Accuracy of a finished test piece

Part 7 Evaluation of contouring performance in the coordinate planes

Part 8 Evaluation of thermal distortions

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear, referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.