NATIONAL FOREWORD

This Indian Standard (Part 1) (First Revision) which is identical with ISO 3070-1 : 2007 ‘Machine tools — Test conditions for testing the accuracy of boring and milling machines with horizontal spindle — Part 1: Machines with fixed column and movable table’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the 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 first published in 1987 by taking assistance from ISO 3070-1 : 1975 ‘Test conditions for boring and milling machines with horizontal spindle — Testing of accuracy — Part 1: Table type machines’. Since ISO has revised its standard, now the committee has decided to adopt this standard in dual numbering to align it with the latest version of ISO 3070-1 to keep pace with the latest international developments.

In this revision, besides other changes, designation of axes and terminology for machine components have been included. The tolerances have been made more stringent. Tests for accuracy and repeatability positioning by numerically controlled machines have been included.

This standard is published in two parts. Other part of this standard is:

Part 2 Floor type machines

The text of ISO Standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminology 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.