1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS B ISO 3291 KS B ISO 3291:2013 2013 4 5 http:/www.kats.go.krKS B ISO 3291:2013 : ( ) ( ) (AMS) ( ) : (http:/www.standard.go.kr) : :2003 8 30 :2013 4 5 2013-0126 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS B ISO 3291:2013 i 1995 2 ISO 3291, Extra
2、-long Morse taper shank twist drills , . KS B ISO 3291:2013 Extra-long Morse taper shank twist drills 1 200 630 mm, 650 mm (extra-long) ( .) . 2 . . ( ) . KS B ISO 296, KS B ISO 10899, 2 3 1, 1 2 . 4 KS B ISO 10899 . 5 . a) b) c) , d(mm) d) , l(mm) d 10 mm, l 250 mm . KS B ISO 3291 10 250 KS B ISO 3
3、291:2013 2 1 l1ldKS B ISO 3291:2013 3 1 : mm l d h8 200 250 315 400 500 630 a6 6.5 7 7.5 8 8.5 9 9.5 10 11 12 13 14 1 15 16 17 18 19 20 21 22 23 2 24 25 28 30 3 32 35 38 40 42 45 48 50 4 6d9.5 6d14 6d23 9.5d40 14d50 23d50 l1 2 . aKS B ISO 296 . KS B ISO 3291:2013 4 2 l1: mm l 200 250 315 400 500 630
4、 l11 110 160 225 310 2 215 300 400 3 275 375 505 4 250 350 480 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS B ISO 3291:2013 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Extra-long Morse taper shank twist drills ICS 25.100.30