Disclosure to Promote the Right To Information

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1 इ टरन ट म नक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. ज न1 क अ+धक र, ज 1 क अ+धक र Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live प0र 1 क छ ड न' 5 तरफ Jawaharlal Nehru Step Out From the Old to the New IS (2004): Indexable Inserts for Cutting Tools - Ceramic Inserts with Rounded Corners, Part 2: Dimensions of Inserts without Cylindrical Fixing Hole [PGD 32: Cutting tools]! न $ एक न' भ रत क +नम-ण Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge! न एक ऐस खज न > ज कभ च0र य नहB ज सकत ह ह Bhartṛhari Nītiśatakam Knowledge is such a treasure which cannot be stolen

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4 IS (Part 2): 2004 Indian Standard INDEXABLE INSERTS FOR CUTTING TOOLS CERAMIC INSERTS WITH ROUNDED CORNERS PART 2 DIMENSIONS OF INSERTS WITH CYLINDRICAL FIXING HOLE ICS25.1OO.O1 0 BIS 2004 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI Februay 2004 Price Group 6

5 Single Point Cutting Tools, Carbide Tips and Indexable Inserts Sectional Committee, BP 12 NATIONAL FOREWORD This Indian Standard (Part 2) which is identical with Indexable inserts for cutting tools Ceramic inserts with rounded corners Part 2: Dimensions of inserts with cylindrical fixing hole issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendations of the Single Point Cutting Tools, Carbide Tips and Indexable Inserts Sectional Committee and approval of the Basic and Production Engineering Division Council. The text of the 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 in the International Standard, while in Indian Standards, the current practice is to use a point(.) as the decimal marker. In the adopted standard, reference appears to the following International Standard for which Indian Standard also exists. The corresponding Indian Standard which is to be substituted in its place is listed below along with its degree of equivalence for the edition indicated: lnternationa/ Standard Corresponding Indian Degree of Standard Equivalence ISO 1832:1991 Indexable inserts IS 9897:2001 Indexable inserts Identical for cutting tools Designation for cutting tools Designation (second revision) 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 a test or analysis 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.

6 Indian Standard INDEXABLE INSERTS FOR CUTTING TOOLS CERAMIC INSERTS WITH ROUNDED CORNERS PART 2 DIMENSIONS OF INSERTS WITH CYLINDRICAL FIXING HOLE 1 Scope This part of ISO 9361 specifies the dimensions of indexable ceramic inserts with rounded corners, with cylindrical fixing hole, with 0 normal clearance. These inserts are primarily intended to be mounted by top and hole, or hole alone, clamping on turning and boring tools. Ceramic cutting materials consist of a variety of oxides, nitrides and carbides. In contrast with hardmetals (including cermets) ceramics do not have a metallic binding matrix, Such ceramic materials are, for example, oxide ceramics (consisting primarily of aluminium oxide A120J, carboxide ceramics (consisting generally of a mixture of aluminium oxide and other materials such as titanium carbide TiC) and nitride ceramics (consisting generally of a mixture of silicon nitride and other materials, such as yttrium oxide Y203 and aluminium oxide) ISO 1832:1991, Indexable inserts for cutting tools Designation. 3 Types of inserts The types of indexable ceramic inserts specified in this part of ISO 9361 are the following: TN: triangular inserts, with 0 normal clearance: SN: square inserts, with 0 CN: rhombic inserts, with and 80 included angle; DN: rhombic inserts, with and 55 included angle; normal clearance; 0 normal clearance 0 normal clearance RN: round inserts, with 0 normal clearance. Inserts dealt with in this part of ISO 9361 are standardized without chip breakers. In general, the inserts are used with chamfered or rounded cutting edges, see clause 6. 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of ISO At the time of publication, the edition indicated was valid, All standards are subject to revision, and parties to agreements based on this part of ISO 9361 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. Table C.1 gives the range of sizes for the inserts (see annex C). 4 Tolerances The indexable ceramic inserts which are the subject of this part of ISO 9361 are provided in tolerance classes G and M, in accordance with ISO The values of the tolerances in accordance with ISO 1832 are given in table A.1. Other tolerances are given in table3 to table 7. 1

7 5 Fixing hole In order to guarantee interchangeability when mounting the insert, the diameter d, of the fixing hole is related to the diameter c/ of the inscribed circle of the insert according to table 1, Table 1 Fixing hole Dimensions in millimetres d 9,525 12,7 15,875 19,05 (fi + 0,08 3,81 5,16 6,35 7, Additional information The dimensions of chamfered cutting edges T, S, K or P may be specified, following the letter symbol on cutting edge condition in the manufacturer s catalogue. Such information on cutting edge dimensions, if specified, shall have the form of a five-digit number, the first three digits being the value of byin units of 0,01 mm and the last two digits being the value of Y*, in degrees (see figure 1). NOTE 1 In the case of cutting edge condition K and P, the first chamfer 67,, defined in accordance with figure 2, is at the manufacturer s choice and is not part of the additional information (five-digit number) as described in 6.2, 6 Cutting edge 6.1 Cutting edge condition The cutting edge condition of the indexable ceramic inserts specified in this part of ISO 9361 is to be selected from those specified in ISO 1832:1991, 5.1, b Figure 1 Figure 2

8 EXAMPLE Chamfered cutting edge Ton an inserf TNGA /JY= 0,2 mm yh = 20 8 Measurement Annex B indicates the methods of measuring the dimension m of the indexable inserts covered by this part of ISO Designation and additional information: TNGA T Designation and marking 7.1 Designation The designation of the indexable ceramic inserts which form the subject of this part of ISO 9361 shall conform to ISO In addition to this designation, one or both of the following may be indicated: the number symbol for the additional information on cutting edge dimensions, in accordance with 6.2; the commercial designation of the ceramic grade. 7.2 Marking The following symbol, at least, shall be marked on the insert itself (except when this would be difficult to carry out on smaller inserts): symbol of the commercial designation of the ceramic grade. 9 Recommended dimensions The choice of the more common dimensions is restricted to the values given in table 3 to table 7. It is strongly recommended that these standard inserts be used each time wherever possible (first preference). When other inserts are required, their dimensions shall be selected from the non-shaded areas of table C.1 (second preference). Inserts corresponding to the dimensions given in the shaded areas of this table are not recommended. NOTE 2 The m-dimensions are calculated using the exact values, rounded off to the third decimal point, of the corner radius r,, in accordance with table 2. Table 2 Values of r. used for calculation of dimension m WDesignation ~4 ~8 of r, Calculation value 0,397 0,794 of r,, mm ,191z16 1,588 1, ,381

9 9.1 Triangular inserts TN6A 7MlA Ffgure 3 Inserts Table 3 Dimensions of triangular inserte Dimensions in millimetres 1 d m d, = t) i! 1) * i,* * 0,03 -rwm 1s0464 TNMA 1S ,891 0,4 TN(3A lstm6s TNMA le040s ,8 16,5 9,525 4,70 3,81 TN(3A TNMA 1S ,097 1,2 TNQA 1S0416 TNMA 1S0416 ~2,7 1,6 TNOA 220SC8 TNMA 220SOe 18,256 0,8 TNGA 220S12 TNMA 220S12 17,859 1, ,7 6,35 5,16 TN(3A 220S16 TNMA 22W16 17,463 1,6 TNGA 226S20 TNMA 220S20 17, ) Tolerances In accordance with those specified in ISO 1832, annex A

10 9.2 Square Inserts SN6A S?MA Figure 4 Table 4 Dimensions of square inserts Dimensions in millimetres Inserts d 3 m d, 1) 1) 1) *31 * 0,08 SNGA SNMA ,466 0,4 SNGA SNMA ,301 0,8?2,7 4,76 5,16 SNGA SNMA ,137 1,2 SNGA SNMA ,972 1,6 SNGA 12060S SNMA 12060S 2,301 0,8 SNGA SNMA ,137 1,2 72,7 6,35.. 5,16 SNGA SNMA ,972 1,6 SNGA SNMA ,808 2 SNGA 150S12 SNMA 1S0S12 2,795 1,2 SNGA 1S0616 SNMA %875 6,35 2,63 1,6 6,35 SNGA SNMA 150S20 2, ) Tolerances in accordance with those spectf!ed in ISO 1832, annex A. 5

11 9.3 Rhombic inserts with 80 included angle CM4A p 0 o~ I Figure 5 Table 5 Dimensions of rhombic inserts with 80 included angle Dimensions in millimetres Inserts 1 d s ml n12 4 N 1) 1) 1) 1) +$,1 +- 0,08 CNQA CNMA ,308 1,818 0,4 CNQA 12040S CNMA 12040S 3,088 1,697 0,8 12,9 32,7 4,76 5,16 CNQA CNMA ,867 1,576 1,2 CNf3A CNMA ,647 1,455 1,6 CNQA 120S0S CNMA 120S0S 3,088 1,697 0,8 CNQA CNMA ,867 1,576 1,2 12,9 12,7 6,35 5,16 CNQA CNMA 120S16 2,647 1,455 1,6 CNQA 120S20 CNMA ,426 1,334 2 CNQA CNMA ,749 2,061 1,2 CNQA 160S16 CNMA ,1 15,875 6,35 3,529 1,939 1,6 6,35 CM(3A 16W20 CNMA ,306 1, ) Tolerances in accordance with those specified in ISO 1832, annex A. 6

12 9.4 Rhombic inserts with 55 included angle Figure 6 Inserts Table 6 Dimensions of rhombic inserts with 55 included angle d 1) s m 1) 1) Dimensions in millimetre 4 *$1 f 0,08 DWAIS04D8 I DNIAA 15&iii DW3A 1S0412 DNMA 1S0412 I mm DNMA DNGA 15060S DNMA 16060S I DNGA 1S0612 DNMA I DNGA DNMA , ,5 12,7 12,7 6,478 0,8 I 4,76 6,015 1,2 5,16 I 5,552 1,6 1 I I 6,478 0,8 35El=l DNQA DNMA ) Tolerances in accordance with those specified in ISO 1832, annex A. 7

13 9.5 Round inserts -,-. UnHA I ~ Figure 7 Table 7 Dimensions of round inserts Dimensions in millimehes d s d, inserts 1) 1) * 0,08 I I I RNGA RNMA ,7 4,76 5,16 I I I I RNGA lsmoo RNMA l!yxw 15,875 6,35 i~ I I, RNGA 190@0 RNMA leosoo t- 19,05 6,3S 7$4 I I I I f 1) Tolerances in accordance with those specified in ISO 1832, annex A.

14 Annex (normative) A Tolerances for d, w q, nz2 and s (extract from ISO 1832) Table A.1 Tolerances for d, m, ml, Q and s Dimensions in millimetres Tolerances Tolerances class G Insert Tolerances class M for classes O and M for for Designation d d, m, ml and r?!? d m, ml and m2.y TN.A ,525 * 0,05 + 0,08 TN.A 22.. SN.A 12.. *0,13 CN.A ,7 * 0,08 RN.A 12., + 0,025 *0,13 DN.A 15.. *0,15 SN.A 15.. CN.A ,875 *0,1 * 0,15 RNA 15.. RN.A ,05 *0,1 fo,15 9

15 Annex B (normative) Method of measurement of m dimension B.1 Triangular inserts Dimension nz is related to the side opposite the corner that is to be measured. The insert is placed on a surface plate as shown in figure B.1 and checked by means of a dial gauge zeroed with the aid of a gauge block corresponding to dimension m. The dial gauge then gives a reading of the error when applied to the inserts to be measured. Figure B.2 B.3 Rhombic inserts Dimension m is checked by reference to the diameter d of a precision roller, where d corresponds to Figure B.1 the nominal size of the inscribed circle of the insert. The insert is mounted on a 55, 80 or 100 vee-block as shown in figure B.3 and checked by means of a B.2 Square inserts dial gauge which has been zeroed to dimension m by means of a roller with the aid of a gauge block. Dimension m is checked by reference to the diam- The dial gauge then gives a direct reading of the.. eter d of a precision roller, where d corresponds to error when applied to the Inserts to be measured. the nominal diameter of the inscribed circle of the insert. The insert is mounted on a 90 vee-block as shown in figure B.2 and checked by means of a dial gauge which has been zeroed to dimension m by means of a roller with the aid of a gauge block. The dial gauge then gives a direct reading of the error when applied to the inserts to be measured. (-7) i!!z% e..... Figure B.3 B.4 Round inserts The diameter d is measured with a micrometer or a similar device. 10

16 Annex C (normative) Inserts with rounded with cylindrical fixing hole, with shapes covered parl of ISO 9361 Table C.1 Range of sizes Dimensions in milltmetres 1= d 9,525. I 12,7 F12,7 15,s75 19,05 12,7 15,875 19,05 12,7 t- 15,875 19,05 Designation G Tolerance ciaaa d Corner radiua, rt d Corner radius, rc Designation? 0,4 0,8 1,2 1,6 2 2,4 2 0,4 0,8 1,2 1,6 2 2,4 TNGA TNMA TNGA 2204 TNMA 2204 TNGA TNMA SNGA SNMA SNGA SNMA SNGA SNMA SNGA 1S06 SNMA 1966 CNGA CNMA CNGA CNMA CNGA CNMA CNGA 1906 CNMA 1906 DNGA DNMA 154) DNGA DNMA 150S RNGA 1204(XI + RNMA 12041M + RNGA 1606W + RNMA 1506Ul + RNGA 191KO0 + RNMA M ~ First pr eference, inserts included in this part of ISO 9361 (see tables 3 to 7). ~ Non-shaded areas: second preference, inserts not covered by this pert of ISO 9361, n Shaded areas: inserts not recommended. 11

17 IS I 5091 (Part 2): 2004 Annex (informative) D Bibliography [1] ISO 883:1985, /ndexab/e hardrnetal (carbide) inserts with rounded corners, without fixing hole Dimensions. [2] ISO 3286:1976, Single point cutting tools Corner radii. [3] ISO 3364:1985, /ndexab/e hardmetal (carbide) inserts with rounded corners, with cylindrical fixing hole Dimensions. [4] ISO 3365:1985, Indexable hardrnetal (carbide) inserts with wiper edges, without fixing hole Dimensions. [5] ISO :1983, Indexable hardmetal (carbide) inserts with rounded corners, with partly cylindrical fixing hole Part 1: Dimensions of inserts with 7 degrees normal clearance. [6] ISO :1990, Indexable inserts for cutting tools Hardmetal (carbide) inserts with rounded corners, with partly cylindrical fixing hole Part 2: Dimensions of inserts with 11 degrees normal clearance. [7] lso/tr :1990, Indexable inserts for cutting tools Hardmetal (carbide) inserts with rounded corners, with partly cylindrical fixing hole Part 3: V-shape inserts. [8] ISO :1991, /ndexab/e inserts for cuffing tools Ceramic inserts with rounded corne~s Part 1: Dimensions of inserts without fixing hole.. 12

18 Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of 61S. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of lndian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of BIS Catalogue and Standards: Monthly Additions. This Indian Standard has been developed from Doc : No. BP 12 (0288). Amendments Issued Since Publication Amend No. Date of Issue Text Affected Headquarters : BUREAU OF INDIAN STANDARDS Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi Telegrams: Manaksanstha Telephones : , , (Common to all offices) Regional Offices : Telephone Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI { Eastern : 1/14 C.I.T. Scheme Vll M, V. 1.P. Road, Kankurgachi , KOLKATA { , Northern : SCO , Sector 34-A, CHANDIGARH Southern : C.I.T. Campus, IV Cross Road, CHENNAI { { , , Western : Manakalaya, E9 MlDC, Marol, Andheri (East) , MUMBAI { , Branches : AHMEDABAD. BANGALORE. BHOPAL. BHUBANESHWAR. COIMBATORE. FARIDABAD. GHAZIABAD. GUWAHATI. HYDERABAD. JAIPUR. KANPUR. LUCKNOW. NAGPUR. NALAGARH. PATNA. PUNE. RAJKOT. THIRUVANANTHAPURAM. VISAKHAPATNAM. Printed at Prabhat Offset Press, New Delhi-2