def gear_size(P=None, A=None, B=None):
if P is None:
P = input_int("ENTER: Diametrical pitch ............? ")
if A is None:
A = input_int("ENTER: No. of teeth - Gear A ........? ")
if B is None:
B = input_int("ENTER: No. of teeth - Gear B ........? ")
D, E, C, R = gearing.design_gear_distances(P, A, B)
print("GEARING SPECIFICATIONS")
print("Diametrical pitch ............... {0:6d}".format(P))
print("Gear A - No. of teeth ........... {0:6d}".format(A))
print(" - Pitch diameter (in.) ... {0:10,.3f}".format(D))
print("Gear B - No. of teeth ........... {0:6d}".format(B))
print(" - Pitch diameter (in.) ... {0:10,.3f}".format(E))
print("C.C. (inches) ...................{0:10,.3f}".format(C))
print("Ratio ...........................{0:10,.3f}:1".format(R))
def gear_design():
P = input_int("ENTER: Diametrical pitch ............? ")
K = input_float("ENTER: Known R.P.M. ................? ")
S = input_float("ENTER: Sought R.P.M. ................? ")
C = input_float("ENTER: Desired c.c. distance (in.) ..? ")
if any((P is None, K is None, S is None, C is None)):
return
print("Gear A Gear B c.c.(in.) R.P.M.")
for A, B, C2, S2 in gearing.design_teeth_iter(P, K, S, C):
print("{0:8d} {1:8d} {2:10,.3f} {3:10,.3f}".format(A, B, C2, S2))
N = input_int("ENTER: desired gear A size? ")
if N is None:
return
A, B, C, S = gearing.design_from_A(P, N, K, S)
D, E, _, R = gearing.design_gear_distances(P, A, B)
H = input_float("ENTER: (if applicable) Horsepower.........? ")
if H is None:
I = J = None
# one report
else:
I, J = gearing.torque(H, K, S)
# other report
print("GEARING SPECIFICATIONS")
print("Diametrical pitch ............... {0:6d}".format(P))
print("Gear A - No. of teeth ........... {0:6d}".format(A))
print(" - Pitch diameter (in.) ... {0:10,.3f}".format(D))
print(" - R.P.M. ................. {0:10,.3f}".format(K))
if I is not None:
print(" - Shaft torque (in./lb)... {0:10,.3f}".format(I))
print("Gear B - No. of teeth ........... {0:6d}".format(B))
print(" - Pitch diameter (in.) ... {0:10,.3f}".format(E))
print(" - R.P.M. ................. {0:10,.3f}".format(S))
if J is not None:
print(" - Shaft torque (in./lb)... {0:10,.3f}".format(J))
print("C.C. (inches) ...................{0:10,.3f}".format(C))
print("Ratio ...........................{0:10,.3f}:1".format(R))
if H is not None:
print("Horsepower ...................... {0:10,.3f}".format(H))