Praktikum Abtrenntechnik 1 Drehen Ð Spanform und Oberflchenqualitt Kinematik und Geometrie beim Langdrehen ! !"#"$%&$"&'()*+,-%&$"&(%&.(/"0+,#*&.*$1"*2"3*&*-*4&(25","&6(7"538,5"&(9%5(:"5-*$%&$(;4&()4-8-*4&01<5="5&(>)4-8-"*?"@(A*-(380B"."5(C"?*"C*$"&(D%E"&F(%&.(G&&"&14&-%5 Bild: Prinzip des Lngsdrehen Vc H(I+,&*--$"0+,#*&.*$1"*Vf H(7450+,%C$"0+,#*&.*$1"*Ve H(J*51$"0+,#*&.*$1"*Fc H(I+,&*--1583Ff H(7450+,%C1583Fa H(D1-*;1583-(K()"0%?-*"5"&."(8%0(:+(%&3(:3 Fp H(L800*;1583-(K(-5M$-(8C"5(&*+,-(9%5(N"*0-%&$0%A0"-9%&$(C"* Bild: Winkel am Drehwerkzeug "# O8%=-8&0*+,$# I+,&*--(DF! %# D&0*+,-(P(>8%3(J"519"%$FI+,&"*."C"&"@ QK(:5"*3?M+,"(R(K(I=8&3?M+,"(S(K(J"519"%$FI+,&"*."C"&"(T(K(J"519"%$F !"9%$0"C"&"(U(K(C"-58+,-"-"5(I+,&"*."=%&1-(V(K(8&$"&4AA"&"(D5C"*-0"C"&"(W K(J"519"%$FI+,&"*."&"C"&"(X(K(I+,&"*.=?8--" J*&1"?6(Y(K(Z*&0-"??#*&1"?(>(9#*0+,"&(O8%=-0+,&"*."(%&.(D5C"*-0"C"&" [(K(Z+1"&#*&1"?(>(9#*0+,"&(O8%=-F(%&.(\"C"&0+,&"*."@ ](K(\"*$%&$0#*&1"?(>(9#*0+,"&(I+,&"*."(%&.(!"9%$0"C"&"@ ^(K(:5"*#*&1"? _(K(`"*?#*&1"? a(K(I=8&#*&1"? ! ?"-9-"&(.5"*(J*&1"?(#"5."&(*&(."5(J"519"%$Fb5-,4$4&8?"C"&"($"A"00"&(%&. "5$"C"&(9%08AA"&(cde ! .*"(J8,?(."5(J*&1"?(*0-(8C,M&$*$(;4&6(J"510-433'(I+,&"*.0-433' !"85C"*-%&$0;"538,5"& Bild: Spezifische Schnittkraft als Funktion der Spannungsdicke `+(QfQ(H(8%3(."&(I=8&%&$0g%"50+,&*--,HQ(AA(CHQAA(C"94$"&"(0="9*3*0+," I+,&*--1583D&04&0-"&(1+ Q(K(J"519"%$(R(K(J"510-h+1 ,(K(I=8&%&$0.*+1" C(K(I=8&%&$0C5"*-" 8=(K(I+,&*--*"3" 3(K(7450+,%C i(H(j(K(Z*&0-"??#*&1"? Zerspankraftkomponenten :9(H(:8(k(:=(H(:+(k(:-(k(:= :+(H(C(l(,(l(1+(H(8=(l(3(l(1+ Spezifische Schnittkraft `+(H(`+QfQ(m(, A+ >(*&(\mAAn@ A+(K(I=8&%&$0.*+1"&"l=4&"&- Leistungsberechnungen L+(H(:+(l(;+(>D(I=8&&%&$0g%"50+,&*--(H(8=(l(3(H(C(l(,@ L8C(H(L+(m(o(>(:+(H(I+,&*--1583-'(;+(H(I+,&*--$"0+,#*&.*$1"*-'(o(H p80+,*&"&#*51%&$0$58.@ 7-(H(D(l(;+(>(L+(H(I+,&*--?"*0-%&$'(L8C(H(DC$8C"?"*0-%&$(."0(D&-5*"C0A4-4-50@ Taylorfunktion Standzeitfunktion: q(H(3(>;+'(3@ Einfache Taylorfunktion: q(H(3>;+@(H(DQ(l(;+ DR Erweiterte Taylorfunktion: q(H(3(>;+'3@(H(DS(l(;+ DR l(3 DT I-8&.15*-"5*"&6(/5"&9#"5-"(3h5(%&"5#h&0+,-"(7"5M&."5%&$"&(8A(JP'(JIq(4."5 P"50=8&;45$8&$ ! 8A(JP6(9%?M00*$"5(7"50+,?"*E ! 8A(JIq6(9%?M00*$"(bC"53?M+,"&58%,"*! 8A(P"50=8&;45$8&$6(9%?M00*$"(I+,&*--1583-