Gear Example


Generates a set of four involute gears designed to mesh together.

*You will need to edit the Output Folder directory path in line 7 so that it is specific to your machine.

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Python
Units.Current = UnitTypes.Millimeters

PressureAngle = 20
Thickness = 3
MercuryDiameter = 32
# replace with your own path
OutputFolder = 'C:\Users\username\Desktop\ScriptDir/'
SizeFile = open(OutputFolder + 'EarthGearSizes.txt', 'w')

def GenerateGear(Name, Teeth, DiametralPitch, Thickness, OutputFolder, SizeFile):
  Gear = Part(Name)
  Profile = Gear.AddGearDN('Profile', DiametralPitch, Teeth, PressureAngle, 0, 0, Gear.GetPlane('XY-Plane'))
  Gear.AddExtrudeBoss('Gear', Profile, Thickness, False)
  print SizeFile, '%s Pitch Diameter = %f' % (Name, Profile.PitchDiameter)
  Gear.Save(OutputFolder)
  Gear.Close()

# get diametral pitch
Gear = Part('MercuryPrimaryGear')
Profile = Gear.AddGearNP('Profile', 16, MercuryDiameter, PressureAngle, 0, 0, Gear.GetPlane('XY-Plane'))
Gear.Close()
DiametralPitch = Profile.DiametralPitch
print >> SizeFile, 'Diametral Pitch = %f' % DiametralPitch

GenerateGear('EarthLargeGear', 80, DiametralPitch * 2, Thickness, OutputFolder, SizeFile)
GenerateGear('Earth3Gear', 14, DiametralPitch * 2, Thickness, OutputFolder, SizeFile)
GenerateGear('Earth4Gear', 14, DiametralPitch * 2, Thickness, OutputFolder, SizeFile)

# Earth 1 and 2 gears
Gear = Part('Earth1-2Gear')
Profile = Gear.AddGearDN('Profile', DiametralPitch * 2, 32, PressureAngle, 0, 0, Gear.GetPlane('XY-Plane'))
Gear.AddExtrudeBoss('Gear', Profile, Thickness + 1, False)
print SizeFile, 'Earth1Gear Pitch Diameter = %f' % Profile.PitchDiameter
Profile2 = Gear.AddGearDN('Profile2', DiametralPitch * 2, 14, PressureAngle, 0, 0, Gear.GetFace('Face<129>'))
Gear.AddExtrudeBoss('Gear', Profile2, Thickness, False)
print SizeFile, 'Earth2Gear Pitch Diameter = %f' % Profile2.PitchDiameter
Gear.Save(OutputFolder)
Gear.Close()

SizeFile.close()