Show Menu
Cheatography

FABRICACIÓN Cheat Sheet (DRAFT) by

PEC 1 Fabri - abr 23

This is a draft cheat sheet. It is a work in progress and is not finished yet.

TEORIA DE CORTE

Cp=T/6 σ
ɣn ≡ despre­ndi­miento
h1 ≡ viruta no def
f ≡ avance [mm/rev]
(malo) 3≤T/2I≤10 (caro)
αn ≡ incidencia
h2 ≡ viruta def
fz ≡ avance filo [mm]
ap ≡ prof corte [mm]
βn ≡ filo
φn ≡ inclin­acion del filo
S ≡ vel del husillo [rpm]
S ≡ vel del husillo [rpm]
μ = tgρn =F/N
Rt = f2/8r
V ≡ vel de corte [m/min]
T=C/V^1/n
T=K/(V1/n1 f1/n2 ap1/n3)
1/n1 > 1/n2 > 1/n3
ξ= h2/h1 ≡ fact recalcado
tgφn = cosɣn/­(ξ-­senɣn)
2φn + ρn - ɣn = π/2
I = N/N0 *100 maquin­abi­lidad
h1 = f*senκr
κr ≡ posición
εr ≡ punta
Fc filo= ks*A0=­ks*­D/2*f/2
Vf=V*f­/(π*D)
Fa = Nc*sen κr
Pa = Fa*Vf
Fr = Nc*cos κr
Fc = ks*A0=­ks0*h1-m
Pc = Fc*V
Nc = Fc*tg(ρn - ɣn)
Fc broca = z*Fc filo
P = z*Fc filo
 
M=Fa*p/2π
α β ɣ ≡ >

ECONOMIA DE MECANIZADO

Produc­tividad = Produccion obteni­da/­fac­tores utilizados
si tc<tm -> tm≈tc =l/Vf
tfi=tp­rep­/nº­pieza + tcarga + top + tdesc + tnp
top =tconf + tch + tno conf -- tt = tm + tc/T*trf + tnp
Ctmec = Cmec + Cch + Cnp + Cpre + Cmat + Cutill
Cmec= ċtm -- Cch=ċtch -- Cnp=ċ*tnp
Am - directa = Cmaq/Años -- simple =D(1+tasaa)
Ct= ċtm+tc/Ttrf+Chf)+ċtnp
-- compuesta = D*(1+tasa)a
ċ = (Am/nt­urn­os+­nºoperCtelab)1/(1-η­costes)1/(horasocup)
enteriza -- Chf = (Ch+nr­eaf­*Cr­eaf­)/(­nre­af+1)
plaquitas -- Cporta­h/(­npl­aqvidanfilos)+zCplaq/­nfilos
Tmp=(1­/n1­)*trf