JB Z 228-1985 攻丝前钻孔用麻花钻直径.pdf

1、j:_ 玫丝前锚孔用麻花J钻直径根据JB/z228-85 粗牙普通螺纹攻丝前站孔用麻花钻直径按表1选取。褒1mm 曹曹通 纹飞f内螺纹小径D1麻花钻直径公称直径螺距d D P 5日6日7日5H6H、7日自回xE姐Xmax mtn 3.0 。.52.571 2.599 2.639 2.459 2.50 4.0 0.7 3.382 3.422 3.466 3.242 3.30 5.0 0.8 4.294 4.334 4.384 4.134 4.20 / 6.0 1 5.107 5.153 5.217 4.917 5.00 8.0 1. 25 6 859 6.912 6.983 6.647 6.80

2、 10.0 1. 5 8.612 8.676 8.751 8.376 / 8.50 12.0 1. 75 10.371 10.441 10.531 10.106 10.20 16.0 2 11.135 14.210 14.310 13.835 14.00 18.0 15.649 15.744 15.854 15.294 15.50 2.5 20.0 17.649 17.744 17.854 17.294 17.50 24.0 21.152 21. 252 21. 382 20.752 21. 00 3 / 27.0 24.152 24.252 24.382 23.752 24.00 30.0

3、26.661 26.771 26.921 26.211 26.50 3.5 33.0 29.661 29.771 29.921 29.211 29.50 36.0 32.145 32.270 32.420 31.670 32.00 4 39.0 35.145 35.270 35.420 34.670 35.00 42.0 37.659 37.799 37.979 37.129 37.50 4.5 45.0 40.659 40.799 40.979 40.129 40.50 48.0 43.147 43.297 43.487 42.587 43.00 5 52.0 47.147 47.297 4

4、7.487 46.587 47.00 56.0 5.5 50.646 50.796 50.996 50.046 50.50 2 细牙普通螺纹攻丝前钻孔用麻花钻直径按衰2选取。106 根据JB/Z228-85 、褒2mm 唱量通镰r纹 .t 内螺纹小径DI麻花钻直径公称直径螺I!. d D p 5日6日7日5H6H、7日苟，max卢max四18XDllD 8.0 7.107 7.153 7.217 6.917 7.00 10.0 9.107 9.153 9.217 8. 917 9.00 12.0 11.107 11.153 11.217 10.917 11.00 14.0 13.107 13.

5、 153 13.217 12.917 13.00 16.0 15.107 15.143 15.217 14.917 15.00 18.0 1 17.107 17. 153 17.217 16.917 17.00 20.0 19.107 19.153 19.217 18.917 19.00 22.0 21.107 21.153 21.217 20.917 21. o 24.0 23.107 23.153 23.217 22.917 23.00 27.0 26.107 26.153 26.217 25.917 26.00 30.0 29.107 29.153 29.217 28.917 29.00

6、 吨10.0 8.859 8.912 8. 982 8.647 y 8.80 12.0 1. 25 10.859 旬.10.912 10.982 10.647 10.80 14.0 12.859 12.912 12.982 12.647 12.80 12.0 10.612 10.676 10.751 10.376 10.50 14.0 12.612 12.676 12.751 12. 376 12.50 16.0 14.612 14.676 14.751 14.376 14.50 18.0 16.612 16.676 16.751 16.376 16.50 20.0 18.612 18.676

7、 18.751 18.376 18.50 22.0 20.612 20.676 20.751 20.376 20.50 24.0 22.612 22.676 22.751 22.376 22.50 27.0 25.612 25.676 25.751 25.376 25.50 1. 5 30.0 28.612 28.676 28.751 28.376 28.50 33.0 31. 612 31. 676 31.751 31. 376 31. 50 36.0 34.612 34.676 34.751 34.376 34.50 39.0 37.612 37.676 37.751 37.376 37.

8、50 42.0 40.612 40.676 40.751 40.376 40.50 45.0 43.612 43.676 43.751 43.376 43.50 48.0 46.612 46.676 46.751 46.376 46.50 52.0 50.612 50.676 50.751 50.376 50.50 18.0 16. 135 16.210 16.310 15.835 16.00 20.0 18.135 18.210 18.310 17.835 18.00 22.0 20. 135 20.210 20.310 19.835 20.00 24.0 22.135 22.210 22.

9、310 21. 835 22.00 27.0 25.135 25.210 25.310 24.835 25.00 30.0 28.135 28.210 28.310 27.835 28.00 33.0 2 31.135 31. 210 31.310 30.835 31. 00 36.0 34.135 34.210 34.310 33.835 34.00 39.0 37.135 37.210 37.310 36.835 31.00 42.0 40.135 40.210 40.310 39.835 40.00 45.0 43.135 43.210 43.310 42.835 43.00 48.0

10、46.135 46.210 46.310 45.835 垂6.0052.0 50.135 50.210 50.310 49.835 50.00 107 潮赞脚踏卜妇表Z(完mm 乡警二遭 纹1、但在比二公称直径F、呐螺纹小径Dt麻花钻直径:螺-庭二盘P 5日6日7H 5组、6日、7日d D 也max max 贸咀芷a咀组30.0 、!27.152 ，、27.252 号，27.382 26.752 27.00 33.0 30.152 30.252 30.382 29.752 30.00 36.0 33.152 33.252 飞飞33.382 32.752 33.00 39.0 36.152 36

11、.252 36.382 35.752 36.00 3 39.382 42.0 39.152 39.252 38.752 39.00 45.0 42.152 42.252 毛42.38241.752 42.0 48.0 45.152 45.252 、，45.382、44.752 45.00 52.0 49.152 49.252 49.382 48.752 49.00 42.0 38.145 38.270 38.420 37.670 38.00 45.0 41. 145 41. 270 41. 420 40.670 41. 00 4 48.0 44.145 44.270 44.420 43.670 44.00 52.0 48.145 48.270 48.420 47.670 4量.00/ 4 108