Turning Technical Information 2016 by KYOCERA Precision Tools

More catalogs by KYOCERA Precision Tools | Turning Technical Information 2016 | 38 pages | 2016-11-07

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Page 28 of Turning Technical Information 2016

basic formulas metric � t  urning vc � x dm x n 1000 n Ødm � c  utting speed vc cutting speed [m/min dm workpiece diameter [mm l n spindle revolution [min-1 � p  ower requirement pc ks x vc x ap x f 6120 x � low carbon steel 190 medium carbon steel 210 vc cutting speed [m/min high carbon steel 240 ap depth of cut [mm low alloy steel 190 high alloy steel 245 php power requirement horse power [hp php ks x vc x ap x f 4500 x � ks figure pc power requirement [kw f feed rate [mm/rev cast iron 93 ks specific cutting resistance [kgf/mm-2 malleable cast iron 120 � mechanical efficiency 0.7 0.8 bronze brass 70 � s  urface roughness rz=h theoretical surface roughness [�m f feed rate [mm/rev rr� corner radius of insert [mm rzh f2 x 1000 8 x rr� � rz=h f rr � c  hip removal volume q vc x ap x f q chip removal volume [cm3/min vc cutting speed [m/min ap depth of cut [mm f feed rate [mm/rev � e  dge position compensation � � �x r-r´ x technical r �z r-r´ x r28 cos sin � 2 � 2 � � � 90° -1 sin 2� �z � � rr� � 90° -1 sin 2� �x r´r�´ �x x-axis direction edge position compensation [mm toolholder type insert corner angle � cutting edge angle � �x �z �z z-axis direction edge position compensation [mm pcln 80° 95° 0.100 x r-r´ 0.100 x r-r´ ptgn 60° 91° 0.714 x r-r´ 0.030 x r-r´ pdjn 55° 93° 0.866 x r-r´ 0.099 x r-r´ r corner-r before change [mm pdhn 55° 107.5° 0.531 x r-r´ 0.531 x r-r´ r´ corner-r before change [mm pvln 35° 95° 2.072 x r-r´ 0.273 x r-r´ pvpn 35° 117.5° 1.351 x r-r´ 1.351 x r-r´ psbn 90° 75° 0.225 x r-r´ -0.293 x r-r´ � insert corner angle [° � toolholder’s cutting edge angle [° example compensation when changing corner-r from 0.80 to 0.40 using pcln type holder �x 0.100 x 0.80 0.40 0.04 mm �z 0.100 x 0.80 0.40 0.04 mm 800.823.7284 visit us online at kyoceraprecisiontools.com