JIS-B-4409-1988-ENG.pdf
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1、J I S B*4409 88 4933608 0013bL2 T sl , . UDC 621.951.7 JAPAN ESE IN DUSTRIAL STANDARD Machine Bridge Reamers Translated and Published by Japanese Standards Association 6 s Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/111111100
2、1, User=Wing, Bernie Not for Resale, 03/12/2007 01:53:20 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*YYO9 88 W Y933608 0013bL3 L W In the event of any doubt arising, the original Standard in Japanese is to be final authority. Copyright Japanese Standards Associati
3、on Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:53:20 MDTNo reproduction or networking permitted without license from IHS -,-,- e . Q, I) J I S B*4409 88 = 4933608 0013bL4 3 UDC 621.951.7 JAPANESE INDUSTRIAL STANDARD J I S M
4、achine Bridge Reamers B 4409-1988 1. Scope This Japanese Industrial Standard specifies the machine bridge reamers from 6.0 mm to 50.8 mm in diameter used for workding bolt holes specified in JIS B :180 and rivet holes specified in JIS B 1214, hereinafter referred to as the “reamers“. 2. Definitions
5、For the purposes of this Standard, the definitions given in JIS B 0173 apply 3. Type The reamers shall be classified into two types of straight flute and helical flute according to existence or nonexistence of twist. 4. Shapes and Dimensions The shapes and dimensions of the reamers shall conform to
6、Table 1, Applicable Standards and Corresponding International Standard: See page 7, Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:53:20 MDTNo reproduction or networking permitted witho
7、ut license from IHS -,-,- JIS B*4409 88 E 4933608 0013b15 5 I 2 B 4409-1988 Table 1. Shapes and Dimensions of Reamer Straight flute Taper lead angle 1/10 I- -1 Helical flute Unit: mm - rotal xtting tdge ength I - :apere !utting !dge ength T 30 - - Morse taper No. - 1 2 - lvera mgth L 151 Diameter D
8、For reference - of lion - P tp 6.7 lumber f teeth - 5 Nominal diameter of rivet minai dedg- ation of screw iread for hexa- 3 n head bolt Recornrnendec diameters Tolerance k8) Rani dime Over 6. O - D i 75 M6 6.4 3.4 4.2 7.4 6.7 7.5 156 32 34 _ - 36 80 a5 90 5. o 8.4 7.5 8. 5 161 - 166 + o. 022 O 5.4
9、9 9.5 8.5 9.5 5.9 9.5 10 10.5 6.2 10.6 171 - 176 - 199 95 38 Ma, MIO 6.7 1 1 7 10 10.6 11.8 40 - 42 100 105 115 125 135 7.5 11.5 M10 7. a 12 a. 3 11.8 13.2 12.5 13 13.5 8.8 a. 9 M12 13.2 14. O 209 46 - - 50 _ 54 9.4 13 14 + O. 027 O + O. 033 O 9.5 14.5 14. O 15. O - 1G. O 219 - 229 10 14 15 10.1 15.
10、 5 M14 15. o 16. O 10.6 16- 16.5 11.1 11.6 11.7 17. O 251 16 17 17.5 3 M16 12.2 18 19. o 261 - 17. O 145 12.7 18.5 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:53:20 MDTNo reproductio
11、n or networking permitted without license from IHS -,-,- I J I S B*4409 88 W 4933b08 OOL3bLb 7 Table 1 (Continued) Unit: rnrn For reference - veraii tngth L - :om utting !dge ength I - apered utting dge angth T - 58 - fiorse .aper to. Diameter D umbei f teetl Nominal diameter of rivet minai desig- i
12、tion of screw read for hexa- m head bolt Ran of h e r D i diameters 1 to id incl l9 I 17. O 19. o 261 145 155 _ 165 13.2 19.5 I 13.3 ia M18 20 20.5 21 21.5 13. a 14.3 19. o 21.2 271 62 14. a 5 14.9 M20 22 I 15.4 23.6 66 15.9 22.5 I 21.2 _ 23.6 281 - 296 16.4 16.9 M20, M22 24 23*5 I 16. a M22 17.3 3
13、17. a M22, M24 25.5 25 I 26. 5 ia0 72 ia. 3 26 I ia. a 19.3 M24 26.5 27 27.5 28 28.5 29 19.2 19.7 6 20.2 26.5 - 30. O 30. O 311 195 20.7 M27 21.2 21.7 22.2 31.5 326 22.6 M27, M30 31 32 33 354 - 364 210 - 220 23.6 30 a4 - aa 31.5 - 33.5 33.5 - 37.5 M30 24.1 25.2 26.2 27.2 34 I 32 M30, M33 36 35 I 33
14、M33 37 1 +;o39 28.2 4 - 7 - a - 28.8 36 38 39 40 42 29. a M36 42.5 374 230 37.5 92 - 96 30. a 32. a 35.4 M39 40 - 42.5 47.5 384 240 45 50 I M42 M45 47.5 - 50. a 394 250 100 40 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing,
15、 Bernie Not for Resale, 03/12/2007 01:53:20 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S 8*4409 88 4933b08 0033617 9 H 4 B 4409-1988 Remarks 1. The Morse taper shank shall be as specified in JIS B 4003. 2. The centre holes shall be as specified in JIS B 1011. 3. It
16、 is desirable that the diameter D shall be back-tapered to 0.03 mm for each 100 mm in length. 4. The tolerance on D shall be as specified in JIS B 0401. 5. The tolerance on i, I and T shall correspond to coarse class specified in JIS B 0405. 5. Quality 5.1 Appearance The appearance of the reamers sh
17、all be well-finished without such defects as flaws, cracks, injurious burrs, rust or misjoint. 5.2 Surface Roughness The surface roughness of the flank face of the cutting part of the reamers shall be 1.6 a (6.3 S) specified in JIS B 0601 when tested in accordance with 7.1. 5.3 Hardness The hardness
18、 of the cutting part of the reamers shall be HRC 63 (HV 772) or better when tested in accordance with 7.2. the end portion of shank shall be suitably heat-treated to acquire resistance to harmful deformation and damage. Further, 5.4 Runout The runout of the cutting part of the reamers shall be Table
19、 2. within the range specified in Table 2 when tested in accordance with 7.3. Runout Tolerance of Cutting Part - Unit: mm item I Diameter D Tolerance value t Over 6. O up to and incl. Runout of Remark: The method of diagrammatic presentation shall be as specified in JIS B 0021. 5.5 Sharpness The rea
20、mers shail be excelient in sharpness. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 01:53:20 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 B 4409-1988 6. Mat
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