IS 15144: Indexable Hardmetal (Carbide) Inserts with Rounded Corners with Partly Cylindrical Fixing Hole - Dimensions of Inserts With 7° Normal Clearance for Light Alloy and Plastic Components Turning

14 Pages·2002·1.2 MB·English

by  Bureau of Indian Standards

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IS 15144 (2002): Indexable Hardmetal (Carbide) Inserts with
Rounded Corners with Partly Cylindrical Fixing Hole -
Dimensions of Inserts With 7° Normal Clearance for Light
Alloy and Plastic Components Turning [PGD 32: Cutting
tools]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
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“Knowledge is such a treasure which cannot be stolen”

Indian Standard
INDEXABLE HARDMETAL (CARBIDE) INSERTS WITH
ROUNDED CORNERS WITH PARTLY CYLINDRICAL
FIXING HOLE — DIMENSIONS OF INSERTS WITH 7°
NORMAL CLEARANCE FOR LIGHT ALLOY AND
PLASTIC COMPONENTS TURNING
ICS 25.100.01

C) BIS 2002
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
August 2002
Price Group 4
—A
Single Point Cutting Tools, Carbide Tips and Indexable Inserts Sectional Committee, BP 12
FOREWORD
This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Single
Point Cutting Tools, Carbide Tips and Indexable Inserts Sectional Committee had been approved by the Basic
and Production Engineering Division Council.
This is the first Indian Standard for carbide inserts for machining of high alloy non-ferrous metals and plastic
components.
These inserts are primarily intended to be mounted on turning and boring tools by acountersunk head screw or
any other fixing element. These inserts are used for turning light alloy materials (non-ferrous materials, such as
aluminium, copper, brass, bronze) and plastic.
In the preparation of this standard, considerable assistance has been drawn from the manufacturing practices in
India and at international level.
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,
observed or calculated, expressing the result of atest, shall be rounded off in accordance with IS 2: 1960 ‘Rules
for rounding off numerical values (revised)’. The number of significant places retained in the rounded off value
should be the same as that of the specified value in this standard.
—d<
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Is 15144:2002 ,,
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Indian Standard
INDEXABLE HARDMETAL (CARBIDE) INSERTS WITH
ROUNDED CORNERS WITH PARTLY CYLINDRICAL ,,”.
L.
;-::
FIXING HOLE — DIMENSIONS OF INSERTS WITH 7° i
‘1
NORMAL CLEARANCE FOR LIGHT ALLOY AND
PLASTIC COMPONENTS TURNING
1 SCOPE 5 TOLERANCES
This standard specifies the dimensions of indexable 5.1 Indexable hardmetal inserts are provided in
hardmetal (carbide) inserts with rounded comers with tolerance class G according to IS 9897,
partly cylindrical fixing hole.
5.1.1 The values ofthe tolerances according to IS9897
Inserts dealt with inthis standard, are standardized with are given below:
chip breakers on the face.
. Dimension Tolerance
2 REFERENCES d, m, ml and mz * 0.025
s +0.13 .
The following Indian Standards contain provisions which
5.1.2 Other tolerances are included in Table 7for hole
through reference in this text, constitute provisions of
dimensions and inTables 1to 6for insert dimensions.
this standard. At the time of publication, the editions
indicated were valid. All standards aresubject torevision
5.2 Measurement
and parties to agreements based on this standard are
encouraged to investigate the possibility of applying the Annex A indicates the methods of measuring the
most recent editions of the standards indicated below: dimension of the indexable inserts covered by this
standard.
1SNo. Title
2428:1999 Application of hard cutting materials
6 GENERAL REQUIREMENTS ----
for machining by chip removal —
Designation ofthemain groups ofchip 6.1 Thickness of Inserts with Chip Breaker
removal and groups of applications
Thethicknesss of inserts with chip breakers isdefined
(jirst revision)
as the distance between the cutting edge at the corner
9897:2001 Indexable inser ts for cutting tools —
and the opposing supporting surface of the insert
Designation (secon d revision)
[see Fig. l(a) and (b)].
12354:1988 Indexable carbide inserts with partly
cylindrical fixation hole
6.2 Fixing Hole
3 TYPES OF INSERTS
In order to guarantee interchangeability when
a) TC : Triangular inserts with 7° normal mounting the insert by a countersunk head screw
clearance; having a head taper angle between 40° and 60°, the
b) SC :Square inserts with 7° normal clearance; form ofthe hole ispartly cylindrical and itsdimensions
c) CC: Rhombic inserts with 7°normal clearance are related to the diameter of the inscribed circle of
and 80° included angle; the insert. Figure 2 and Table 7 give the elements of
d) DC: Rhombic inserts with 7°normal clearance definition of the fixing hole.
and 55° included angle;
The position of point P is given by diameter d,
e) VC :Rhombic inserts with 7°normal clearance
(Table 7), the distance t,measured from the cuttin~
and 35° included angle; and
edge at the comer, and dimension c, measured from
t) RC :Round inserts with 7° normal clearance.
the upper face.
4 DIMENSIONS
The ranges of dimensions tand c are as follows:
The choice of the more common dimension isrestricted
0,05d, < t < 0.3d,
to the specification given in Tables 1to 6. It is strongly
recommended that these standard inserts be used and
wherever possible. 0.015d, s Cs 0.3d,

1
-a
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IS 15144:2002
Table 1Dimensions for Triangular Inserts with 7° Normal Clearance, Type TC
(Clauses 4 and 5.1.2)
Alldimensions inmillimetres.
6: + 30’
TCGT
with chip breakers
.
Inserta 1 # # m’) r~ d,
% * 0.10 Js13
TCGT O6TIO2 5.755 0.2
6.9 3.97 1.98 2.15
TCGT O6TIO4 5.556 0.4
TCGT 090202 2.38 8.131 0.2
9.6 5.56 2.5
TCGT 090264 7.943 0.4
TCGT 110202 9.322 0.2
11.0 6.35 2.38 2.8
TCGT 110204 9.128 0,4
TCGT 16T302 14.089 0.2
.-
TCGT 16T304 16.5 9.525 3.97 13.891 0.4 4.4
TCGI’ 16T308 13.494 0.8
1)Tolerance Ond,s andmaccording toIS9897 (see 5.1.1).
These dimensions take into account three cases:
indexable inserts with upper faces below the cutting
edges [Fig. 2(a)]; with upper faces on the same level
s
asthe cutting edges [Fig. 2(b)]; with upper faces above
the cutting edges [Fig. 2(c)].
The dimensions oft and cshall be satisfied in all three
a cases.
The diameter dl of the cylindrical part of the hole is
given in Tables 1to 7,
The part of the profile between d2and P is left at the
manufacturer’s discretion but shall satisfy the
following requirements:
a) the use of screws with head taper angle 13
b
between 40” and 60° shall be possible;
b) the angle of the tangent theoretical taper at
FIG. 1THICKNESSOFINSERTSWITHCHIPBREAKERS
point P has the value p 2 65°; and
2
Is 15144:2002
Table 2 Dimensions for Square Inserts with 7° Normal Clearance, Type SC
(Clauses 4 and5.1.2)
Alldimensions inmillimetres.
J=d
SCGT
withchip breekera
Inserts 8) # # rg d,
* 0010” Js13
I
SCGT09T304 1.808 0.4
9.525 3.97 4.4
SCGT09T308 1.644 0.8
SCGT 120408 12.70 4.76 2.301 0.8 5.5
I)Toleranceond,s~d maccordingtoIS9897(see 5.1.1).
,-.---
b

P P
salt
l--
b) c) ,.
FIG. 2 ELEMENTSOFDEFINITIONOFFIXING HOLE

3
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\,
Is 15144:2002
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Table 3 Dimensions for Rhombic Inserts with 7° Normal Clearance and 80° Included Angle Type CC
(Clauses 4 and 5.1.2)
Alldimensions inmillimetres.
LF-t--F
CCGT
with chip breekere
Inserts 1 &) #) ml) al) d,
% Jlo Js 13
CCGT 060202 1.652 0.908 0.2
6.4 6.35 2.38 2.8
CCGT 060204 1.544 0.848 0.4
,>.--
CCGT 09T302 2.536 1.394 0.2
CCGT 09T304 9.7 9.525 3,97 2.426 1.333 0.4 4.4
CCGT 09T308 2.206 1.212 0.8

CCGT 120402 3.418 1.878 0.2

CCGT 120404 12.9 12.70 4.76 3.308 1.818 0.4 5.5
CCGT 120408 3.088 1.697 0.8
1)Tolerance ond,s, mland m2according to1S9897 (see 5.1.1).
c) the distance between the contact line with a a) Symbolofthe group ofapplication according
screw having 40° head taper angle and the to IS 2428.
contact line with a screw having 60° head b) Commercial designation of the hardmetal
taper angle shall be as small as possible. grade.
The part of the profile above point P is letl at the
manufacturer’s discretion. 8 MARKING
The following symbol, at least, shall be marked on
7 DESIGNATION
the insert itself (except when this would be difllcult
The designation of the indexable hardmetal inserts on the smaller inserts):
complying with this standard, shall conform to
The symbol of the group of application, or
Is 9897.
commercial designation ofthe hardmetal grade (or
In addition to this designation, one or both of the both, if possible, on large inserts).
following may be indicated:
4
I $%
IS 15144:2002
Table 4 Dimensions for Rhombic Inserts with 7° Normal Clearance and
55° Included Angle, Type DC
(Clause,s 4 and 5.1.2)
Alldimensions in millimetres.
DCG7
with chip breaksrs
Inserts I &) #) #
m *()‘E+10 Jsd,13
DCGT 070202
3.464 0.2
DCGT070204 7.75 6.35 2.38 2.8
3.238 0.4
ilCGT 1IT302
5.320 0.2
DCGT 11T304 11.6 9.525 3.97 5.089 0.4 4.4
DCGT 11T308 4.626 0.8
1)Tolerance ond,s and maccording toIS9897 (see 5.1.5).

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