IS 4296 : Part 3 : 2015/ISO 9181 : 2007 - Tools for Pressing Part 3 Round Punches with 60o Conical Head and Reduced Shank

ICS 25.120.10                                                PGD 04

Reaffirmed 2021

National Foreword

TThis Indian Standard (Part 3) (Second Revision) which is identical with ISO 9181 : 2007 ‘Tools for pressing - Round punches with 60o conical head and reduced shank’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Metal Forming Machines Sectional Committee and approval of the Production and General Engineering Division Council.

Due to increased volume of work being done on hand-operated and power-operated presses in the country, it had created a need for the standardization of tooling elements for use on such machines. Much of the work produced by press working tools necessitates the piercing of holes. To fulfill this need, this standard was first published in 1967 to cover the general requirements for round piercing punches up to 14.4 mm effective diameter for making round holes.

Subsequently in the passage of time, many changes had been introduced in the industry to suit the need of the user industries. To bring these changes in this standard, the standard has been revised in 2002 in four parts. Now, with the revision of ISO Standards on the subject, this standard is revised in three parts.

Other parts are:

Part 1 Round punches with 60 degrees conical head and straight shank (second revision)

Part 2 Punches with cylindrical head and straight or reduced shank (first revision)

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.for pressing - Punches - Nomenclature and terminology