def write_dat(gear):
f = open("GeneratingGrinding.dat", "w+")
f.write("Gear data:\n")
value = gear.internal_external.value * gear.number_of_teeth
f.write(" Number of teeth...............z.......: %6.2f\n" % value)
f.write(" Normal module.................mn......: %6.2f mm\n" %
gear.normal_module)
f.write(" Transverse module.............mt......: %6.2f mm\n" %
gear.transverse_module)
f.write(" Axial module..................mx......: %6.2f mm\n" %
gear.axial_module)
value = gear.helix_direction.value * Converter.rad2grad(
gear.helix_angle)
f.write(" Helix angle...................beta....: %6.2f °\n" % value)
f.write(" Pitch Diameter................d.......: %6.2f mm\n" %
gear.pitch_diameter)
f.write(" Left Flank:\n")
f.write(" Normal Pressure Angle......alpha_n.: %6.2f °\n" %
Converter.rad2grad(gear.left_flank.normal_pressure_angle))
f.write(" Transverse Pressure Angle..alpha_t.: %6.2f °\n" %
Converter.rad2grad(gear.left_flank.transverse_pressure_angle))
f.write(" Base Circle Diameter.......d_b.....: %6.2f mm\n" %
gear.left_flank.base_circle_diameter)
f.write(" Right Flank:\n")
f.write(" Normal Pressure Angle......alpha_n.: %6.2f °\n" %
Converter.rad2grad(gear.right_flank.normal_pressure_angle))
f.write(" Transverse Pressure Angle..alpha_t.: %6.2f °\n" %
Converter.rad2grad(gear.right_flank.transverse_pressure_angle))
f.write(" Base Circle Diameter.......d_b.....: %6.2f mm\n" %
gear.right_flank.base_circle_diameter)
f.write("Tool data:\n")
f.write("Process data:\n")
f.close()
def setUp(self):
self.amount = 100
self.src_currency = 'BGN'
self.dest_currency = 'JPY'
self.reference_date = '2020-02-26'
self.converter = Converter(self.amount, self.src_currency,
self.dest_currency, self.reference_date)
def test_calc_base_circle_diameter_helical_gear(self):
alpha_t = Converter.grad2rad(20.28355)
beta = Converter.grad2rad(10.0)
z = 2
mn = 2
expected = 3.809833
actual = Flank.calc_base_circle_diameter(alpha_t, mn, beta, z)
self.assertAlmostEqual(expected, actual, 5)
def test_calc_base_circle_diameter_spur_gear(self):
alpha_t = Converter.grad2rad(20.0)
beta = Converter.grad2rad(0.0)
z = 2
mn = 2
expected = 3.75877
actual = Flank.calc_base_circle_diameter(alpha_t, mn, beta, z)
self.assertAlmostEqual(expected, actual, 5)
def test_calc_pitch_diameter_spur_gear(self):
mn = 2.0
z = 2
beta = Converter.grad2rad(0.0)
expected = 4.0
actual = Gear.calc_pitch_diameter(mn, z, beta)
self.assertAlmostEqual(expected, actual, 5)
def test_calc_pitch_diameter_negative_helical_gear(self):
mn = 2.0
z = 2
beta = Converter.grad2rad(-10.0)
expected = 4.061706
actual = Gear.calc_pitch_diameter(mn, z, beta)
self.assertAlmostEqual(expected, actual, 5)
class ConverterTest(unittest.TestCase):
def setUp(self):
self.amount = 100
self.src_currency = 'BGN'
self.dest_currency = 'JPY'
self.reference_date = '2020-02-26'
self.converter = Converter(self.amount, self.src_currency,
self.dest_currency, self.reference_date)
def test_constructor(self):
self.assertTrue(
self.converter.getAmount() == self.amount
and self.converter.getSrcCurrency() == self.src_currency
and self.converter.getDestCurrency() == self.dest_currency
and self.converter.getReferenceDate() == self.reference_date)
def test_execute_success(self):
result = self.converter.execute()
self.assertEqual(result['amount'], 6142.24)
self.assertEqual(result['currency'], 'JPY')
def test_execute_failure(self):
self.converter.src_currency = 'UUU'
self.assertEqual(
self.converter.execute(), {
'error message':
'the currencies or the data given as input are not valid'
})
def test_fetchRatio(self):
self.assertTrue(
self.converter.fetchRatio(self.src_currency, self.reference_date)
== [1.9558])
self.assertTrue(
self.converter.fetchRatio(self.dest_currency, self.reference_date)
== [120.13])
self.assertTrue(
self.converter.fetchRatio('EUR', self.reference_date) == [1])
self.assertTrue(
not self.converter.fetchRatio('UUU', self.reference_date))
def write_md(gear):
f = open("GeneratingGrinding.md", "w+")
f.write("# Generating Gear Grinding Summary\n")
f.write("## Gear data\n")
value = gear.internal_external.value * gear.number_of_teeth
f.write("* Number of teeth z: %6.2f\n" % value)
f.write("* Normal module m<sub>n</sub>: %6.2f mm\n" %
gear.normal_module)
f.write("* Transverse module m<sub>t</sub>: %6.2f mm\n" %
gear.transverse_module)
f.write("* Axial module m<sub>a</sub>: %6.2f mm\n" %
gear.axial_module)
value = gear.helix_direction.value * Converter.rad2grad(
gear.helix_angle)
f.write("* Helix angle β: %6.2f °\n" % value)
f.write("* Pitch Diameter d: %6.2f mm\n" % gear.pitch_diameter)
f.write("\n")
f.write("### Left Flank:\n")
f.write("* Normal Pressure Angle α<sub>n</sub>: %6.2f °\n" %
Converter.rad2grad(gear.left_flank.normal_pressure_angle))
f.write("* Transverse Pressure Angle α<sub>t</sub>: %6.2f °\n" %
Converter.rad2grad(gear.left_flank.transverse_pressure_angle))
f.write("* Base Circle Diameter d<sub>b</sub>: %6.2f mm\n" %
gear.left_flank.base_circle_diameter)
f.write("\n")
f.write("### Right Flank:\n")
f.write("* Normal Pressure Angle α<sub>n</sub>: %6.2f °\n" %
Converter.rad2grad(gear.right_flank.normal_pressure_angle))
f.write("* Transverse Pressure Angle α<sub>t</sub>: %6.2f °\n" %
Converter.rad2grad(gear.right_flank.transverse_pressure_angle))
f.write("* Base Circle Diameter d<sub>b</sub>: %6.2f mm\n" %
gear.right_flank.base_circle_diameter)
f.write("\n")
f.write("## Tool data\n")
f.write("\n")
f.write("## Process data\n")
f.close()
def test_calc_transverse_pressure_angle_spur_gear(self):
beta = Converter.grad2rad(0.0)
alpha_n = Converter.grad2rad(20.0)
expected = Converter.grad2rad(20.0)
actual = Flank.calc_transverse_pressure_angle(alpha_n, beta)
self.assertAlmostEqual(expected, actual, 5)
def read_ste(filename):
content = {}
f = open(filename)
for line in f:
if line.__contains__('*1001'):
content.update(
{"number of teeth": int(extract_value_from_line(line))})
if line.__contains__('*1101'):
content.update(
{"normal module": float(extract_value_from_line(line))})
if line.__contains__('*1104'):
content.update({
"helix angle":
Converter.grad2rad(float(extract_value_from_line(line)))
})
if content["helix angle"] < Parameter.Precision.eps_normal:
content.update({
"helix angle direction":
Parameter.DirectionHelixAngle.LEFT
})
else:
content.update({
"helic angle direction":
Parameter.DirectionHelixAngle.RIGHT
})
if line.__contains__('*1106'):
content.update(
{"gear width": float(extract_value_from_line(line))})
if line.__contains__('*1107'):
content.update({
"addendum modification factor":
float(extract_value_from_line(line))
})
if line.__contains__('*1109'):
content.update(
{"tip diameter": float(extract_value_from_line(line))})
if line.__contains__('*1110'):
content.update({
"root diameter generated":
float(extract_value_from_line(line))
})
if line.__contains__('*1111'):
content.update({
"normal pressure angle left":
Converter.grad2rad(float(extract_value_from_line(line)))
})
if line.__contains__('*1112'):
content.update({
"normal pressure angle right":
Converter.grad2rad(float(extract_value_from_line(line)))
})
if line.__contains__('*1127'):
content.update({
"number of measuring teeth":
int(extract_value_from_line(line))
})
if line.__contains__('*1128'):
content.update(
{"tooth span": float(extract_value_from_line(line))})
if line.__contains__('*1129'):
content.update(
{"ball diameter": float(extract_value_from_line(line))})
if line.__contains__('*1130'):
content.update({
"measurement over balls":
float(extract_value_from_line(line))
})
f.close()
if ("normal pressure angle left"
in content) and not ("normal pressure angle right" in content):
content.update({
"normal pressure angle right":
content["normal pressure angle left"]
})
if not ("normal pressure angle left"
in content) and ("normal pressure angle right" in content):
content.update({
"normal pressure angle left":
content["normal pressure angle right"]
})
return content