def getGearProfileRack(derivation, toothProfile):
'Get gear profile for rack.'
derivation.extraRackDemilength = 0.0
for complexPoint in derivation.helixPath:
derivation.extraRackDemilength = max(abs(derivation.helixThickness * complexPoint.imag), derivation.extraRackDemilength)
rackDemilengthPlus = derivation.rackDemilength
if derivation.pinionThickness > 0.0:
derivation.extraRackDemilength *= 1.1
rackDemilengthPlus += derivation.extraRackDemilength
teethRack = int(math.ceil(rackDemilengthPlus / derivation.wavelength))
gearProfile = []
for toothIndex in xrange(-teethRack, teethRack + 1):
translateComplex = complex(-toothIndex * derivation.wavelength, 0.0)
translatedPath = euclidean.getTranslatedComplexPath(toothProfile, translateComplex)
gearProfile += translatedPath
gearProfile = euclidean.getHorizontallyBoundedPath(rackDemilengthPlus, -rackDemilengthPlus, gearProfile)
firstPoint = gearProfile[0]
lastPoint = gearProfile[-1]
rackWidth = derivation.rackWidth
minimumRackWidth = 1.1 * derivation.dedendum
if rackWidth < minimumRackWidth:
rackWidth = minimumRackWidth
print('Warning, rackWidth is too small in getGearProfileRack in gear.')
print('RackWidth will be set to a bit more than the dedendum.')
gearProfile += [complex(lastPoint.real, -rackWidth),complex(firstPoint.real, -rackWidth)]
return gearProfile
def getGearProfileRack(gearDerivation, toothProfile): 'Get gear profile for rack.' rackDemilength = 0.5 * gearDerivation.rackLength teethRack = int(math.ceil(rackDemilength / gearDerivation.wavelength)) gearProfile = [] for toothIndex in xrange(-teethRack, teethRack + 1): translateComplex = complex(-toothIndex * gearDerivation.wavelength, 0.0) translatedPath = euclidean.getTranslatedComplexPath(toothProfile, translateComplex) gearProfile += translatedPath gearProfile = getHorizontallyBoundedPath(rackDemilength, -rackDemilength, gearProfile) firstPoint = gearProfile[0] lastPoint = gearProfile[-1] gearProfile.append(complex(lastPoint.real, lastPoint.imag - gearDerivation.rackWidth)) gearProfile.append(complex(firstPoint.real, firstPoint.imag - gearDerivation.rackWidth)) return gearProfile
def getGearProfileRack(gearDerivation, toothProfile):
'Get gear profile for rack.'
rackDemilength = 0.5 * gearDerivation.rackLength
teethRack = int(math.ceil(rackDemilength / gearDerivation.wavelength))
gearProfile = []
for toothIndex in xrange(-teethRack, teethRack + 1):
translateComplex = complex(-toothIndex * gearDerivation.wavelength,
0.0)
translatedPath = euclidean.getTranslatedComplexPath(
toothProfile, translateComplex)
gearProfile += translatedPath
gearProfile = getHorizontallyBoundedPath(rackDemilength, -rackDemilength,
gearProfile)
firstPoint = gearProfile[0]
lastPoint = gearProfile[-1]
gearProfile.append(
complex(lastPoint.real, lastPoint.imag - gearDerivation.rackWidth))
gearProfile.append(
complex(firstPoint.real, firstPoint.imag - gearDerivation.rackWidth))
return gearProfile
