8 8.1 ()( ) PE 8-18-28-3 () 8-48-58-6 8-1PE 8-4 8-2 8-5 8-3 8-6 28
8.2 (Running In) 2000~3000 min -1 30dmN 1 1000~2000 min -1 1000~2000 min - 1 dmn 8-8 8-8 40500 ~ 1000 min - 1 (whipping) 500~1000 min -1 dmn30 500 min -1 8-7 8-7 8.3 12.510-6 Td δ=12.510-6 (dt) 80 8-9 8-9 8.4 () 8-10 29
8-10 8-11 3m DBDBDTDBT 8-1 (6~8)8-12 0.01~0.02mm 8-1 8-11 M F= (d/2) / tan (+) + r n n F N M N mm d mm tan = cos α 8-12 tan = d r n mm n mm n 0.15 mm 0.15 α 30
8.5 BS BS60 2~4BS 8-2 1 m r1 m 8-13 8-2 BS DF DB () N mm DFT DBT DTFT DTBT DFTT DBTT BS2047 175 245 355 275 BS2562 305 420 615 470 BS3062 305 420 615 470 BS3572 380 510 755 590 BS4072 380 510 755 590 8.6 NC (c)δ f8-3 L n =L 1 +f (δ- 1 ) (n=2, 3, 4...) L 1 mm L n mm 8-14 0 8.6.1 - (a) G mm D h mm Dmm D 0 mm deff mm 8-3 f dm / di f 0 ~ 0.2 13 0.2 ~ 0.3 14 0.3 ~ 0.4 15 0.4 ~ 0.5 16 0.5 ~ 0.6 17 0.6 ~ 0.7 18 (d) 8-14 : (b) 8-13 (e) 8-15, 31
8-15 Ln mm 8.6.2-8-16 9 9.1 9-1 9-2 9-1 8-16 9-2 8-17 ()( ) 8-17 7014C9-18m 130N 9-27014C DBDF50 N/m 9-1 7014C (SER.NO) (um) (N) (N) 0001 8 110.8 137.1 0002 8 112.1 138.4 0003 8 112.3 138.6 0005 8 115.8 142.1 0006 8 114.1 140.4 0016 8 120.1 146.4 0018 8 112.5 138.8 0043 8 109.9 136.2 0046 8 112.9 139.2 0053 8 116.0 142.3 32