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1、J I S B*4LL4 93 4933608 0523877 392 UDC 621.914.2.025.7 : JIS JAPANESE INDUSTRIAL STANDARD Parallel shank end mills brazed with cemented carbide tips Translated and Published by Japanese Standards Association Printed in Japan 7 s Copyright Japanese Standards Association Provided by IHS under license
2、 with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*4114 93 4933608 0521878 229 * In the event of any doubt arising, the original Standard in Japanese is to be final authorit
3、y. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted without license from IHS -,-,- UDC 62 1.9 14.2.025.7 JAPANESE INDUSTRIAL STANDARD J I
4、S Parallel shank end mills brazed with cemented carbide tips B 4114-1993 1. Scope mills brazed with cemented carbide tips (hereafter, referred to as “end mills“). This Japanese Industrial Standard specifies the parallel shank end t Remarks: The standards cited in this Standard are given in the follo
5、wing: JIS B 0021 Indications of geometrical tolerances on drawings JIS B 0172 Glossary of terms for milling cutters JIS B 0405 General tolerances - part 1: Tolerances for linear and angular dimensions without individual tolerance indications (IS0 2768-1: 1989) JIS B 0601 Definitions and designation
6、of surface roughness JIS B 0659 Roughness comparison specimens JIS B 1011 Centre holes JIS B 1501 Steel balls for ball bearings JIS B 4053 Hard tool materials and classification of applicabil- ity JIS B 4104 Hard tool material tips JIS B 7153 Toolmakers microscopes JIS B 7502 Micrometer callipers fo
7、r external measurement JIS B 7503 Dial gauges JIS B 7507 Vernier, dial and digital callipers JIS B 7513 Precision surface plates JIS B 7517 Vernier, dial and digital height gauges JIS B 7526 Squares JIS B 7540 V-blocks JIS G 4105 Chromium molybdenum steels JIS G 4401 Carbon tool steels ? 2. Definiti
8、ons For the main terms used in this Standard, the definitions in L JIS B 0172 apply. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted with
9、out license from IHS -,-,- JIS B+4114 93 M 4933608 0521880 987 M With centre cutting edge 2 B 4114-1993 2 BED No. 2000 class 3 BED No. 3000 class 3. Types the presence of the centre cutting edge and the number of flutes. The types of the end mills shall be as given in Table 1 according to Without ce
10、ntre cutting edge Table 1. Types 4 BPD No. 4000 class 6 BPD No. 6000 class Type I Number of flutes I Nominal symbol 4. be in accordance with Table 2 and Table 3. Shapes and dimensions The shapes and dimensions of the end mills shall Copyright Japanese Standards Association Provided by IHS under lice
11、nse with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B+4LL4 93 W 4933608 0521881 813 BED 2180 S BED 2200 S BED 2220 S BED 2240 S BED 2240 L BED 2250 S BED 2250 L BED 3180 S
12、 18 BED 3200 S 20 BED 3220 S 22 BED 3240 S 24 BED 3240 L BED 3250 S 25 BED 3250 L 3 B 4114-1993 Table 2. With centre cutting edge Two-flute Unit: mm - will nsui L 80 - - 95 - 115 - 125 140 125 140 125 140 150 - - - - - - - 160 - Nominal symbol I Outside diameter . E Shank diameter d Informative refe
13、rence Shank length Is 56 60 70 85 70 85 rolerances h8 O - - 0.027 I Basic 1 Tolcr- dimension ancc I Two-flute Basie dimensioi 12 BED 2100 S BED 2110 S BED 2120 S BED 2140 S BED 2150 S RED 2160 S BED 3160 S 16 BED 3140 S BED 3150 S 8.5 to11.5 9 to11.5 10.5 to15.5 11.5 to15.5 12 to15.5 14 to19.5 2.5 1
14、6 20 25 O - 0.033 16 to 19.5 18 to 19.5 20.5 to24.5 70 85 32 O - 0.039 3ED 2320 s 1 BED 3320 S 27 to 31.5 BED 2350 S BED 3350 S BED 2400 S BED 3400 S 40 32 41) (422) BED 2400 (BED (42) 32 35 to41.5 30 to31.5 5-42) 45 S S . S-42) BED BED (RED - -40 I BED 3450 S-40 I 40 32 40 (42) (42) I I (BED 3450 S
15、-42) 1 - BED 2500 S I BED 3500 S - I BED 2500 S-40 1 RED 3500 S-4 (BED 2500 S-42) I (BED 3500 S-42) Remarks 1. The tolerances on tl,c ovcrall length L and shank length Is shall be the coarse class specified in JIS B 0405. 2. The centre hole shall be the Type B or Type C of 60“ centre hole specified
16、in JIS B 1011. 3. The centre cutting edge shall be extended to the opposite side with some allowance, passing through 4. The connecting method of the centre cutting edge with the peripheral cutting edge is not specified, 5. The helix of the peripheral cutting edge shall be of right hand helix, and t
17、he helix angle shall be about 6. The corner part may be chamfered. 7. The end cutting edge should preferably be concaved. 8. The margin width of the peripheral cutting edge shall be 0.05 mm or under. 9. It shall be provided with chip pockets sufficient for use to a degree not deteriorating the rigid
18、ity of the the centre of rotation approximately. however, the connecting part shall be connected without any clearance as far as possible. 30“. body. 10. The neck and the parallel shank shall be connected smoothly. 11. Those of nominal symbols which are given in parentheses should preferably be not
19、used. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S B*4LL4 93 W 4933b08 0521882 75T Shank diameter
20、 d Oveml Jeck diameter d, 10.5to15.5 Nominal centre hole 2 4 B 4114-1993 Table 3. Without centre cutting edge Four-flute Six-flute L-* Is Unit: mm Informative reference Nominal symbol IOutside diameter LI Shank length IS - Flute lengtk 1 25 - 32 - 40 - 50 Four-flute six-flute Basic dimension I Toler
21、- ances 3asic iimension Poleranees -0.033 k0.05 16 20 25 32 60 70 14 15 16 18 20 22 24 25 28 30 32 35 38 40 11.5 to 15.5 14 to 19.5 BPD 4200 S I 16 to 19.5 19.5 to24.5 BPD 4240 L I 85 70 85 23 to 24.5 25 to 31.5 27 to 31.5 30 to 31.5 33 to 39.5 33 to 41.5 30 to 31.5 35 to 39.5 35 to 41.5 30 to 31.5
22、35 to 39.5 35 to41.5 30 to31.5 35 to39.5 35 to41.5 I BPD 4280 S I I 125 70 85 - 0.039 BPD 4320 S BPD 4380 S BPD 4380 S-40 BPD 4400 S 40 (42) 32 41) (42) I BPD 6450 S I 45 32 63 40 (42) I , I I BPD 6500 S I 50 32 I BPD 6500 S-40 I 40 (42) I (BPD 6500 S-42) I Remarks 1. The tolerances on the overall l
23、ength L and shank lcngth Is shall be the coarse class specified in JIS B 0405. 2. The centre hole shall be the Typo B or Type C of 60“ centre hole spccified in JIS B 1011. 3. The helix of the peripheral cutting edgc shall be of right hand helix, and the helix angle shall be about 4. The corner part
24、may be chamfcrcd. 5. The end cutting edgc should prcferably be concaved. 6. The margin width of thc pcriphcral cutting edge shall be 0.05 mm or under. 7. It shall be provided with chip pockets sufficicnt for use to a degree not deteriorating the rigidity of the 8. The neck and the parallel shank sha
25、ll be conncctcd smoothly. 9. Those of nominal symbols which arc givcn in parenthcses should prcfcrably be not used. 3 0 . body. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTN
26、o reproduction or networking permitted without license from IHS -,-,- J I S BU4114 93 M 4933608 0523883 696 5 B 4114-1993 5. Qualities 5.1 Appearance with 7.2, shall conform to the requirements specified in Table 4. The appearance of the end mills, when tested in accordance Table 4. Appearance Divis
27、ion Tip part Body part Quality item Flaws and cracks Finish of cutting edge Brazing condition Flaws, burrs and cracks Finish Condi tion s There shall be no harmful defects in use. The cutting edge parts of the tip shall be finished with grinding. The surface roughness shall be about 0.4a (1.6s) spec
28、ified in JIS B 0601, and the cutting edge shall be free from harmful roll overs and nicks. There shall be no harmful defects in use such as cracks and discontinuity of brazing. There shall be no harmful defects in use, The parallel shank part shall be finished with grind- ing except proper clearance
29、 parts, and the surface roughness shall be about 0.8a (3.2s) specified in JIS B 0601. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted wit
30、hout license from IHS -,-,- J I S Bw4Ll.14 93 4933608 0523884 522 = 6 B 4114-1993 5.2 Run-outs in accordance with 7.3, shall conform to the requirements specified in Table 5. The run-outs of the cutting parts of the end mills, when tested Table 5. Tolerance values of run-outs of cutting parts I Rema
31、rks: Diagrammatical indication method is in accordance with JIS B 0021. Item Tolerance value of run-out of peripheral cutting edge tr Tolerance value of run-out of end cutting edge t U Unit: mm Tolerance value 0.032 0.040 5.3 Hardness of shank part processed with an appropriate heat treatment so as
32、not to cause any damage. The parallel shank part of the end mills shall be 6. Materials Table 6. The materials of the end mills shall be in accordance with Table 6. Materials Division Tip Body Ma te ri als It shall be the hard metal specified in JIS B 4053, and the qualities, materials and testing m
33、ethods shall conform to the requirements specified in JIS B 4104. It shall be SCM435 to SCM445 specified in JIS G 4105 or SK5 to SK7 specified in JIS G 4401, or that having performances equal to or superior to these in use. Copyright Japanese Standards Association Provided by IHS under license with
34、JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted without license from IHS -,-,- JIS B*4LL4 93 4933608 052L885 469 7 B 4114-1993 7. Testing methods 7.1 Shapes and dimensions be measured by the methods given in Table
35、 7. The shapes and dimensions of the end mills shall Table 7. Measuring methods of shapes and dimensions 7 No - 1 . Item Measuring method Measuring tools Diagram for measuring method (a) When the total number of flutes is 2,4 or 6, measure the distance between the opposite peripheral cutting edges b
36、y a micrometer calliper for external measurement or the like. (b) For the three-flute, measure the diameter of peripheral cutting edge by a three-point micrometer calliper for external measurement or the like. Measure the shank part by a micrometer calliper for external measurement or the like. Meas
37、ure by a height gauge, vernier calliper or the like. Micrometer calliper for external measurement specified in JIS B 7502 Out si de diameter D Micrometer calliper for external measurement specified in JIS B 7502 2 Shank diameter d Height gauge specified in JIS B 7517 Vernier calliper specified in JI
38、S B 7507 3 - 4 Overall length L L Height gauge specified in JIS B 7517 Vernier calliper specified in JIS B 7507 Shank length ls Measure by a height gauge, vernier calliper or the like. 5 Concavity of end cutting edge Place a V-block on a precision surface plate, place the shank part of end mill on t
39、he V-block, hold it so that the corner part comes to the lowest point, place a square on the surface plate and apply it lightly to the corner part, and observe the clearance between the corner part of the end cutting edge and the inter- mediate part. Grade 1 precision surface plate specified in JIS
40、B 7513 Grade 2 square speci- fied in JIS B 7526 Grade 1 V-block speci- fied in JIS B 7540 End cutting Precision surface plate 6 - 7 - Measure by a toolmakers microscope, eye gauge or the like. Toolmakers microscope specified in JIS B 7153 Margin of peripheral cutting edge tm Centre cutting edge (BED
41、 type) - E - .: . . . . . : . Vernier calliper specified in JIS B 7507 Measure the effective length of the centre cutting edge (It may also be called “centre cut edge“.) by a vernier calliper or the like. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Emp
42、loyees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S BU4114 93 m 4933608 052188b 3T5 m Observe by visual inspection or a magnifier. 8 B 4114-1993 Magnifier of about 10 magnification 7.2 Appearance met
43、hods given in Table 8. The appearance of the end mills shall be measured by the Tip part No. 1 - - 2 Flaws and cracks Finish of cutting edge 3 - 4 Measure by comparison with the roughness comparison specimens. Observe by visual inspection or a magnifier. Observe by visual inspection or a magnifier.
44、5 - 7.3 Roughness comparison specimens specified in JIS B 0659 Magnifier of about 10 magnification Magnifier of about 10 magnification Table 8. Measure by comparison with roughness comparison speci- mens. Roughness comparison specimens specified in JIS B 0659 I Brazing condition Flaws, burrs and cra
45、cks I- Finish l Measuring methods of appearance Measuring method I Measuring instrument Run-outs In the measurements of the run-outs of the end mills, place the shank part of the end mill on the V-block placed on the precision surface plate as given in Fig. 1, interpose a steel ball between the fixe
46、d plate and the centre hole of the end mill, rotate the shank of the end mill quietly while pressing it to the steel ball, apply dial gauges approximately at right angles to the peripheral cutting edge and the end cutting edge, read the values of the dial gauges at respective cutting edges, and cons
47、ider the differences between the maximum values and the minimum values thereof to be the measured values. Remarks 1. The precision surface plate shall be of the Grade 1 specified in JIS B 7513. 2. The dial gauges shall be those of 0.001 mm in scale interval speci- fied in JIS B 7503. 3. The V-block
48、shall be of the Grade 1 specified in JIS B 7540. 4. The steel ball shall be of the precision grade specified in JIS B 1501. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 07:18:20 MDTNo reproduction or networking permitted without license from IHS -,-,- J I S BE4114 93 W 4933608 052L887 231 9 B 4114-1993