97 lines
3.9 KiB
Python
97 lines
3.9 KiB
Python
#!/usr/bin/env python3
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# Copyright (C) 2013-2016 Florian Festi
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from boxes import *
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class Gears(Boxes):
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"""Gears"""
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ui_group = "Part"
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def __init__(self):
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Boxes.__init__(self)
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self.argparser.add_argument(
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"--teeth1", action="store", type=int, default=12,
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help="number of teeth")
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self.argparser.add_argument(
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"--shaft1", action="store", type=float, default=6.,
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help="diameter of the shaft 1")
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self.argparser.add_argument(
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"--dpercentage1", action="store", type=float, default=75,
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help="percent of the D section of shaft 1 (100 for round shaft)")
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self.argparser.add_argument(
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"--teeth2", action="store", type=int, default=32,
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help="number of teeth in the other size of gears")
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self.argparser.add_argument(
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"--shaft2", action="store", type=float, default=0.0,
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help="diameter of the shaft2 (zero for same as shaft 1)")
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self.argparser.add_argument(
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"--dpercentage2", action="store", type=float, default=0,
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help="percent of the D section of shaft 1 (0 for same as shaft 1)")
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self.argparser.add_argument(
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"--modulus", action="store", type=float, default=2,
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help="size of teeth (diameter / #teeth) in mm")
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self.argparser.add_argument(
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"--pressure_angle", action="store", type=float, default=20,
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help="angle of the teeth touching (in degrees)")
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self.argparser.add_argument(
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"--profile_shift", action="store", type=float, default=20,
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help="in precent of the modulus")
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def render(self):
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# adjust to the variables you want in the local scope
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t = self.thickness
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self.teeth1 = max(2, self.teeth1)
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self.teeth2 = max(2, self.teeth2)
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if not self.shaft2:
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self.shaft2 = self.shaft1
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if not self.dpercentage2:
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self.dpercentage2 = self.dpercentage1
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self.gears(teeth=self.teeth2, dimension=self.modulus,
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angle=self.pressure_angle, profile_shift=self.profile_shift,
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callback=lambda:self.dHole(0, 0, d=self.shaft2,
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rel_w=self.dpercentage2/100.),
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move="up")
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r2, d2, d2 = self.gears.sizes(
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teeth=self.teeth2, dimension=self.modulus,
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angle=self.pressure_angle, profile_shift=self.profile_shift)
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self.gears(teeth=self.teeth1, dimension=self.modulus,
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angle=self.pressure_angle, profile_shift=self.profile_shift,
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callback=lambda:self.dHole(0, 0, d=self.shaft1,
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rel_w=self.dpercentage1/100.),
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move="up")
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r1, d1, d1 = self.gears.sizes(
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teeth=self.teeth1, dimension=self.modulus,
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angle=self.pressure_angle, profile_shift=self.profile_shift)
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r = max(self.shaft1, self.shaft2)/2
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self.hole(t+r, t+r, self.shaft1/2)
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self.hole(t+r+r1+r2, t+r, self.shaft2/2)
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self.moveTo(0, 2*r+t)
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self.text("""Pitch radius 1: %.1fmm
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Outer diameter 1: %.1fmm
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Pitch radius 2: %.1fmm
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Outer diameter 2: %.1fmm
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Axis distance: %.1fmm
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""" % (r1, d1, r2, d2, r1+r2), align="bottom left")
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