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है”ह”ह

IS 13776 (1993): Machine tools - Morse taper shanks -Cotter slots with taper keys [PGD 32: Cutting tools]

IS 13776 : 1993 IS0 1080 : 1975

Indian Standard

TOOLS MORSE TAPER - COTTER SLOTS TAPER KEYS

BIS 1993

SUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

October 1993 Price Group 2

Drills and Reamers Sectional Committee, PE IO

NATIONAL FOREWORD

This Indian Standard which is identical with IS0 1080 : 1975 ‘Machune Tools - Morse taper shanks - Cotter slots with taper keys’ issued by the International Organization for Standardization ( IS0 ), was adopted by the Bureau of Indian Standards on the recommendation of the Drills and Reamers Sectional Committee ( PE 10 ) and aoproval of the Production Engineering Division Council.

The text of IS0 standard has been approved as suitable for publication as Indian Standard. Certain conventions are, however, not identical to those used in Indian Standards. Attention is specially drawn to the following:

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

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

In the adopted standard only metric values have been retained and the inch values deleted, as a result Tables 2 and 4 ( all in inch units ) have been dropped from the adopted IS0 1080 : 1975. Similarly scope and field of application has also been modified.

In the adopted standard reference to IS0 238 : 1974 ‘Reduction sleeves and extension sockets for tools with morse taper shanks’ appears for which Indian Standards also exist. The following related corresponding Indian Standards which are technically equivalent to IS0 238 : 1974 are to be substituted in its place:

IS 6682 : 1991 Morse taper extension sockets - Specification

IS 6702 : 1991 Morse taper reduction sleeves - Specification

The Committee responsible for the preparation of this standard is given at Annex A.

IS 13776 : 1993 IS0 1080 : 1975

Indian Standard

MACHINE TOOLS - MORSE TAPER COTTER SLOTS WITH TAPER

1 SCOPE AND FlELD OF APPLKATION

SHA-NKS - KEYS

This International Standard specifies a dimensioning system with numerical values of the dimensions in millimetres, for cotter slots with 5% taper keys for Morse tapers, outside and inside, and for reduction sleeves, intended for fixing tools on machine tools.

2 MORSE TAPERS. OUTSIDE AND INSIDE

2.1 Orientation of slots

The axial planes of symmetry of the cotter slot and of the sleeve or of its housing shall be identical.

1

OS 13776 : 1993

IS0 1080 : 1975

2.2 Dimensioning

Key section

2.3 Numerical values of dimensions

Table 1

Dimensions in millimetres

Taper No./ Dimension 3 4 5 6

PO 22 22 22 22 Outsida ____.__~ ~~_

taper X0 55.5 58’5 63’5 57

PI 28’5 28’5 28.5 28.5 Inside taper

X2 65 68 73 / 67

I 27 30 35 28.5 Key

( taper 5% ) --_ -.__-

I s 8 8 12’7 16

Key hole t 8’3 8’3 13 16.3

2

IS 13776 : 1993

IS0 1080 : 1975

3 REDUCTION SLEEVES

3.1 Dimensioning

I, Gauge line

3.2 Numerical values of dimensions

Table 3

Dimensions in millimetres

Taper No./ Dimension 413 513 514 613 614 615

Socket

Key

( taper 5% )

al* I 12’5 6.5 12.5

PI I 35 i 29 35

Xl 65 / 68 1 73

II 14.5 ) 22 1 27

-

Sl 8 8 8 8 8 12.7

Key hole t1 1 8’3 / 8.3 1 8.3 1 8.3 / 8’3 / 13

*The values of al are identical with those of the sockets specified in IS0 238. Reduction sleeves and extension sockets for tools with Morse taper shanks, except for No. 4/3 and 5/4 ( 12’5 mm instead of 22’5 mm and 21.5 mm respectively ).

3

IS 13776 : 1993

IS0 1080 : 1975

ANNEX A

( Foreword )

COMMITTEE COMPOSITION

Drills and Reamers Sectional Committee, PE 10

Chairman

SHRI S. RAJACOPALAN

Members

SHRI C. VENKATESH ( Alternate to Shri S. Rnjagopalan )

SHRI PANDURANGAM SHRI C. VENUGOPAL ( Akernare )

SHRI A. 0. ABRAHAM SHRI B. YFSU ( Alternate )

SHRI SURESII J. BAJAJ SHRI SIDH+XRATH J. BAJAJ ( Alternate )

MAJ S. BATNI SHRI S. K. ILWADI ( Alternate )

SHRI W. T. CHAKRAVARTHY SHRI M. SAMBANDAM ( Alternate )

SHRI S. N. DAGA SHRI K. V. Jos ( Alternate ) SHRI A. MADHUSUDANA RAO ( Alternate )

BRIG V. S. DHAWAN

SHRI H. R. GUPTA SHRI D. SARATHY ( Alfernate )

SHRI I. C. KHANNA SHRI R. C. SHARMA ( Alternate )

SHRI D. L. MUKHFRJEF SHRI S. D. SURYAVANSHI ( Alrernate ) SHRI B. M. TAYAL ( Alternate )

SHRI A. S. PUNDLE SHRI A. MANDAL ( Alternate )

SHRI K. N. RAMA MURTHY SHRI T. N. RAMESH ( Alternate )

SHRI H. S. RAMACHANDRA SHN VISHWANATHA BHAT ( Alternak? ) &RI K. S. RAJASHEKAR ( Alternate ) SHRI M. A. RAVINDRA ( Alternate )

SHRI T. R. RAMACHANDRA

SHRI T. SAIDULU

Directorate General of Technical Development, New Delhi

Motor Industries Co Ltd, Bangalore

Central Machine Tool Institute, Bangalore

Indian Telephone Industries Ltd. Bangalore

HMT Ltd, Hyderabad

SHRI B. S. ALBAL ( Alternate )

SHRI R. DIVAKARA PRABHU ( Alternate ) SHRI S. L. NAHAR ( Alternate ) SHRI R. RAMAKRISHNA ( Alternate )

SHRI J. P. SAXENA SHRI N. K. KORANTAK ( Alternate )

SHRI R. SIKDAR

SHRI V. P. SINCH

SHRI V. N. KULKARNI ( Alternate ) SHRI R. K. R. RAO ( Alternate )

SHRI V. SUBIUMANY, Director ( Prod Engg )

Sandvik Asia Ltd, Pune

The Indian Tool Manufactures Ltd, Bombay

Tata Engineering & Locomotive Co Ltd, Jamshedpur

Director General, BIS ( Ex-officio Member )

Member Secretary

SHRI K. C. VERMA

Joint Director ( Prod Engg ), BIS

Representing

Addison & Co Ltd, Madras

Central lnstitute~of Tool Design, Hyderabad

Ordnance Factory Board, Ambernath

Universal Engg & Mfg Industry, Pune

Directorate of Standardization, New Delhi

S R P Tools Ltd, Madras

Bharat Heavy Electricals Ltd, Bhopal

Ministry of Defence ( C Q A E ), Pune

Widia ( India ) Ltd, Bangalore

Directorate General of Supplies & Disposals, New Delhi

The Raja Bahadur Motilal Poona Mills Ltd. Pune

4

___- _

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Dot : No. PE 10 ( 0017 )

Amendments Issaed Since Publicatioo

Amend No. Date of Issue Text Affected

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