|
UDC 621.9
IS0
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
IS0 RECOMMENDATION
R 242
CARBIDE TIPS FOR TURNING TOOLS
METRIC SERIES
1st EDITION
Decem ber 1961
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards belongs to
IS0 Member Bodies. Reproduction of these documents, in any country,
may be authorized therefore only by the national standards organization
of that country, being a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national
standards organizations.
---------------------- Page: 1 ----------------------
BRIEF HISTORY
The IS0 Reconimendatjon R 242, Carbide Tips for Turtling Tools - Metric Series, was drawn
up by Technical Committee ISO/TC 29, Sniall Tools, the Secretariat of which is held by the Associa-
tion Française de Normalisation (AFNOR).
Work on this question by theTechnical Committee began in 1952 and led, in 1958, to the
adoption of a Draft IS0 Recommendation.
In September 1959, this Draft IS0 Recommendation (No. 308) was circulated to all the IS0
Member Bodies for enquiry. It was approved, subject to a few modifications of an editorial nature,
by the following Member Bodies :
Austria Hungary Portugal
Belgium India Swedcn
Burma Italy Switzerland
Czechoslovakia Mexico United Kingdom
France Netherlands U. S. A.
Germany Pakistan
Greece Poland
One Member Body opposed the approval of the Draft: U. S. S. R.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council,
which decided, in December 1961, to accept it as an IS0 RECOMMENDATION.
-2-
---------------------- Page: 2 ----------------------
ISO/R 242 - 1961 (E)
-
I SO Recommendation R 242 December 1961
CARBIDE TIPS FOR TURNING TOOLS
METRIC SERIES
INTRODUCTION
I. SCOPE
This IS0 Recommendation relates to carbide tips for turning tools.
It is valid for applications in metric measure only.*
II. INTER CHANGEABILITY
The dimensions specified in the present IS0 Recommendation are unified dimensions intended
not merely to permit interchangeability between the tips and the tool shanks on which they have
to be mounted, but also to facilitate trade between the various countries using metric measure.
To that end, it is desirable to respect the dimensions of interchan
...