Reaffirmed 2019

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical with ISO 6545 : 1992 ‘Acceptance conditions for gear hobbing machines - Testing of the accuracy’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Machine Tools Sectional Committee and approval of the Production and General Engineering Division Council.

This standard was first published in 1977. This revision has been taken up to align it with the latest edition of ISO Standard.

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

c) Some dimensions appear in ‘inches’ in the International Standard besides in metric systems, while in Indian Standards, the current practice is to give metric values only.