1、BRITISH STANDARD BS6710:1987 Specification for Dimensions of chain wheel tooth forming tools UDC 621.85.051.5BS6710:1987 This British Standard, having been prepared under the directionof the Machine, Engineers and Hand Tools Standards Committee, was published under the authority ofthe Board of BSI a
2、nd comesintoeffect on 27 February1987 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference MTE/16 Draft for comment 84/79089 DC ISBN 0 580 15168 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by t
3、he Machine, Engineers and Hand Tools Standards Committee(MTE/-) to Technical Committee MTE/16 upon which the following bodies were represented: British Gear Manufacturers Association Gauge and Tool Makers Association Institution of Production Engineers Machine Tool Industry Research Association Mill
4、ing Cutter Association Amendments issued since publication Amd. No. Date of issue CommentsBS6710:1987 BSI 11-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Dimensions 1 Appendix A Equivalent inch dimensions for chain wheel tooth forming tools 5 Figure 1 Cutter
5、 profiles for chain wheel rotary tooth form cutters 2 Figure 2 Cutter profile for chain wheel generating tools (hobs, rack and pinion cutters) 4 Table 1 Dimensions for chain wheel rotary tooth form cutters 2 Table 2 Dimensions for chain wheel generating tools (hobs, rack cutters and pinion type cutt
6、ers) 4 Table 3 Inch dimensions for chain wheel rotary tooth form cutters 5 Table 4 Inch dimensions for chain wheel generating tools (hobs, rack cutters and pinion type cutters) 7 Publication referred to Inside back coverBS6710:1987 ii BSI 11-1999 Foreword This British Standard has been prepared unde
7、r the direction of the Machine, Engineers and Hand Tools Standards Committee. The dimensions for chain wheel tooth forming tools were originally included in the1962 edition of BS228 but omitted from the1970 and1984 editions, the latter being identical with ISO606:1982. In response to frequent reques
8、ts this standard rectifies the omission. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
9、Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to8, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside fr
10、ont cover.BS6710:1987 BSI 11-1999 1 1 Scope This British Standard specifies dimensions for rotary tooth form cutters and chainwheel generating tools(hobs, rack cutters and pinion type cutters) used for the manufacture of transmission roller chainwheels complying with BS228. The profiles are given fo
11、r the rotary tooth form cutter in the roller diameter range5mm to95.25mm, and for other chainwheel generating tools the rack form is given in the pitch range8mm to152.4mm. NOTE 1The title of the publication referred to in this standard is listed on the inside back cover. NOTE 2For the purpose of thi
12、s standard the details of the chainwheels are as given in BS228. NOTE 3Table 3 and Table 4, given in Appendix A, are the inch equivalents of Table 1 and Table 2 respectively. Both the inch equivalents and the metric dimensions will provide tooth gap forms within the limits specified in BS228. 2 Dime
13、nsions 2.1 Rotary tooth form cutters The dimensions of rotary tooth form cutters shall comply with Table 1. 2.2 Generating tools The dimensions of the basic rack for generating tools(hobs, rack cutters and pinion type cutters) shall comply with Table 2.BS6710:1987 2 BSI 11-1999 Table 1 Dimensions fo
14、r chain wheel rotary tooth form cutters(seeFigure 1) Figure 1 Cutter profiles for chain wheel rotary tooth form cutters(seeTable 1) 1 2 3 4 5 6 7 Roller diameter maximum Number of teeth in wheel Radius of roller seating SR 1 minimum Radius of working face L Length of working face M Radius at top of
15、tooth Q Width of cutter U minimum mm 5.00 9 to12 13 to19 20 and over mm 2.54 2.54 2.54 mm 9.60 24.03 mm 2.57 3.35 mm 3.84 0.79 mm 12.70 12.70 12.70 6.35 9 to12 13 to19 20 and over 3.20 3.20 3.20 11.43 28.58 3.05 4.01 4.57 0.94 15.24 15.24 15.24 7.75 9 to12 13 to19 20 and over 3.91 3.91 3.91 14.88 37
16、.19 3.96 5.33 5.94 1.27 19.05 19.05 19.05 8.51 9 to12 13 to19 20 and over 4.29 4.29 4.29 15.24 38.10 4.06 5.33 6.10 1.27 19.05 19.05 19.05 10.16 9 to12 13 to19 20 and over 5.13 5.13 5.13 19.05 47.63 5.08 6.65 7.62 1.57 22.86 22.86 22.86 12.07 9 to12 13 to19 20 and over 6.10 6.10 6.10 22.86 57.15 6.1
17、0 8.00 9.14 1.91 26.67 26.67 26.67 15.88 9 to12 13 to19 20 and over 8.03 8.03 8.03 30.48 76.20 8.13 10.67 12.19 2.54 34.29 33.02 31.75 19.05 9 to12 13 to19 20 and over 9.63 9.63 9.63 36.58 91.44 9.75 13.34 14.63 3.18 43.18 40.64 38.10BS6710:1987 BSI 11-1999 3 Table 1 Dimensions for chain wheel rotar
18、y tooth form cutters(seeFigure 1) 1 2 3 4 5 6 7 Roller diameter maximum Number of teeth in wheel Radius of roller seating SR 1 minimum Radius of working face L Length of working face M Radius at top of tooth Q Width of cutter U minimum mm 25.40 9 to12 13 to19 20 and over mm 12.83 12.83 12.83 mm 45.7
19、2 114.30 mm 12.19 16.00 mm 18.29 3.81 mm 50.80 48.26 46.99 27.94 9 to12 13 to19 20 and over 14.12 14.12 14.12 53.34 133.35 14.22 18.67 21.34 4.45 58.42 55.88 53.34 29.21 9 to12 13 to19 20 and over 14.76 14.76 14.76 56.08 140.21 14.96 21.34 22.43 5.08 67.31 63.50 60.96 39.37 9 to12 13 to19 20 and ove
20、r 19.89 19.89 19.89 75.59 188.98 20.17 26.67 30.23 6.35 82.55 78.74 76.20 48.26 9 to12 13 to19 20 and over 24.38 24.38 24.38 91.44 228.60 24.38 32.00 36.58 7.62 99.06 93.08 90.17 53.98 9 to12 13 to19 20 and over 27.25 27.25 27.25 103.63 259.08 27.64 37.34 41.45 8.89 114.30 109.22 99.06 63.50 9 to12
21、13 to19 20 and over 32.08 32.08 32.08 121.92 304.80 32.51 42.67 48.77 10.16 130.81 124.46 115.57 72.39 9 to12 13 to19 20 and over 36.55 36.55 36.55 137.13 342.85 36.58 48.01 54.86 11.43 146.05 139.70 133.35 79.38 9 to12 13 to19 20 and over 40.08 40.08 40.08 152.40 381.00 40.64 53.34 60.96 12.70 162.
22、56 153.67 147.32 95.25 9 to12 13 to19 20 and over 48.11 48.11 48.11 182.88 457.20 48.77 64.01 73.15 15.24 194.31 184.15 176.53BS6710:1987 4 BSI 11-1999 Table 2 Dimensions for chain wheel generating tools (hobs, rack cutters and pinion type cutters)(seeFigure 2) Figure 2 Cutter profile for chain whee
23、l generating tools(hobs, rack and pinion cutters)(seeTable 2) 1 2 3 4 5 Roller diameter maximum Pitch P Radius of roller seating SR 1 minimum Depth of form a Root radius f mm 5.00 6.35 7.75 mm 8.00 9.525 12.70 mm 2.54 3.20 3.91 mm 4.52 5.18 7.32 mm 0.43 0.48 0.71 8.51 10.16 12.07 12.70 15.875 19.05
24、4.29 5.13 6.10 6.86 8.86 10.72 0.66 0.84 1.02 15.88 19.05 25.40 25.40 31.75 38.10 8.03 9.63 12.83 14.40 18.49 20.65 1.37 1.75 1.96 27.94 29.21 39.37 44.45 50.80 63.50 14.12 14.76 19.89 25.10 30.35 36.22 2.39 2.90 3.43 48.26 53.98 63.50 76.20 88.90 101.60 24.38 27.25 32.08 42.82 51.41 57.63 4.06 4.88
25、 5.46 72.39 79.38 95.25 114.30 127.00 152.40 36.55 40.08 48.11 64.26 72.06 86.46 6.12 6.83 8.20BS6710:1987 BSI 11-1999 5 Appendix A Equivalent inch dimensions for chain wheel tooth forming tools The dimensions given in Table 3 and Table 4 are inch equivalents for Table 1 and Table 2 and are included
26、 for information only and do not form part of this standard. Table 3 Inch dimensions for chain wheel rotary tooth form cutters(seeFigure 1) 1 2 3 4 5 6 7 Roller diameter maximum Number of teeth in wheel Radius of roller seating SR 1 minimum Radius of working face L Length of working face M Radius at
27、 top of tooth Q Width of cutter U minimum in 0.197 9 to12 13 to19 20 and over in 0.100 0.100 0.100 in 0.378 0.946 in 0.101 0.132 in 0.151 0.031 in 0.50 0.50 0.50 0.250 9 to12 13 to19 20 and over 0.126 0.126 0.126 0.450 1.125 0.120 0.158 0.180 0.037 0.60 0.60 0.60 0.305 9 to12 13 to19 20 and over 0.1
28、54 0.154 0.154 0.586 1.464 0.156 0.210 0.234 0.050 0.75 0.75 0.75 0.335 9 to12 13 to19 20 and over 0.169 0.169 0.169 0.600 1.500 0.160 0.210 0.240 0.050 0.75 0.75 0.75 0.400 9 to12 13 to19 20 and over 0.202 0.202 0.202 0.750 1.875 0.200 0.262 0.300 0.062 0.90 0.90 0.90 0.475 9 to12 13 to19 20 and ov
29、er 0.240 0.240 0.240 0.900 2.250 0.240 0.315 0.360 0.075 1.05 1.05 1.05 0.625 9 to12 13 to19 20 and over 0.316 0.316 0.316 1.200 3.000 0.320 0.420 0.480 0.100 1.35 1.30 1.25 0.750 9 to12 13 to19 20 and over 0.379 0.379 0.379 1.440 3.600 0.384 0.525 0.576 0.125 1.70 1.60 1.50 1.000 9 to12 13 to19 20
30、and over 0.505 0.505 0.505 1.800 4.500 0.480 0.630 0.720 0.150 2.00 1.90 1.85BS6710:1987 6 BSI 11-1999 Table 3 Inch dimensions for chain wheel rotary tooth form cutters(seeFigure 1) 1 2 3 4 5 6 7 Roller diameter maximum Number of teeth in wheel Radius of roller seating SR 1 minimum Radius of working
31、 face L Length of working face M Radius at top of tooth Q Width of cutter U minimum in 1.100 9 to12 13 to19 20 and over in 0.556 0.556 0.556 in 2.100 5.250 in 0.560 0.735 in 0.840 0.175 in 2.30 2.20 2.10 1.150 9 to12 13 to19 20 and over 0.581 0.581 0.581 2.208 5.520 0.589 0.840 0.883 0.200 2.65 2.50
32、 2.40 1.550 9 to12 13 to19 20 and over 0.783 0.783 0.783 2.976 7.440 0.794 1.050 1.190 0.250 3.25 3.10 3.00 1.900 9 to12 13 to19 20 and over 0.960 0.960 0.960 3.600 9.000 0.960 1.260 1.440 0.300 3.90 3.70 3.55 2.125 9 to12 13 to19 20 and over 1.073 1.073 1.073 4.080 10.200 1.088 1.470 1.632 0.350 4.
33、50 4.30 3.90 2.500 9 to12 13 to19 20 and over 1.263 1.263 1.263 4.800 12.000 1.280 1.680 1.920 0.400 5.15 4.90 4.55 2.850 9 to12 13 to19 20 and over 1.439 1.439 1.439 5.399 13.498 1.440 1.890 2.160 0.450 5.75 5.50 5.25 3.125 9 to12 13 to19 20 and over 1.578 1.578 1.578 6.000 15.000 1.600 2.100 2.400
34、 0.500 6.40 6.05 5.80 3.750 9 to12 13 to19 20 and over 1.894 1.894 1.894 7.200 18.000 1.920 2.520 2.880 0.600 7.65 7.25 6.95BS6710:1987 BSI 11-1999 7 Table 4 Inch dimensions for chain wheel generating tools (hobs, rack cutters and pinion type cutters)(seeFigure 2) 1 2 3 4 5 Roller diameter maximum P
35、itch P Radius of roller seating SR 1 minimum Depth of form a Root radius f in 0.197 0.250 0.305 0.335 0.400 0.475 0.625 0.750 1.000 1.100 1.150 1.550 1.900 2.125 2.500 2.850 3.125 3.750 in 0.315 0.375 0.500 0.500 0.625 0.750 1.000 1.250 1.500 1.750 2.000 2.500 3.000 3.500 4.000 4.500 5.000 6.000 in
36、0.100 0.126 0.154 0.169 0.202 0.240 0.316 0.379 0.505 0.556 0.581 0.783 0.960 1.073 1.263 1.439 1.578 1.894 in 0.178 0.204 0.288 0.270 0.349 0.422 0.567 0.728 0.813 0.988 1.195 1.426 1.686 2.024 2.269 2.530 2.837 3.404 in 0.017 0.019 0.028 0.026 0.033 0.040 0.054 0.069 0.077 0.094 0.114 0.135 0.160
37、0.192 0.215 0.241 0.269 0.3238 blankBS6710:1987 BSI 11-1999 Publication referred to BS228, Specification for short pitch transmission precision roller chains and chainwheels. BS6710:1987 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body resp
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