83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
#!/usr/bin/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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from boxes import pulley
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import math
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class Pulley(Boxes):
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"""Timing belt pulleys for different profiles"""
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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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# remove cli params you do not need
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self.buildArgParser(h=6.)
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self.argparser.add_argument(
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"--profile", action="store", type=str, default="GT2_2mm",
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choices=pulley.Pulley.getProfiles(),
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help="profile of the teeth/belt")
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self.argparser.add_argument(
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"--teeth", action="store", type=int, default=20,
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help="number of teeth")
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self.argparser.add_argument(
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"--axle", action="store", type=float, default=5,
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help="diameter of the axle")
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self.argparser.add_argument(
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"--insideout", action="store", type=BoolArg(), default=False,
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help="create a ring gear with the belt being pushed against from within")
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self.argparser.add_argument(
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"--top", action="store", type=float, default=0,
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help="overlap of top rim (zero for none)")
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# Add non default cli params if needed (see argparse std lib)
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# self.argparser.add_argument(
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# "--XX", action="store", type=float, default=0.5,
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# help="DESCRIPTION")
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def disk(self, diameter, hole, callback=None, move=""):
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w = diameter + 2 * self.spacing
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if self.move(w, w, move, before=True):
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return
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self.moveTo(w / 2, w / 2)
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self.cc(callback, None, 0.0, 0.0)
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if hole:
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self.hole(0, 0, hole / 2.0)
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self.moveTo(diameter / 2 + self.burn, 0, 90)
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self.corner(360, diameter / 2)
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self.move(w, w, move)
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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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if self.top:
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self.disk(
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self.pulley.diameter(self.teeth, self.profile) + 2 * self.top,
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self.axle, move="right")
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for i in range(int(math.ceil(self.h / self.thickness))):
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self.pulley(self.teeth, self.profile, insideout=self.insideout, r_axle=self.axle / 2.0, move="right")
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