Source code for boxes.generators.pulley

#!/usr/bin/python3
# Copyright (C) 2013-2016 Florian Festi
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation, either version 3 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.

from boxes import *
from boxes import pulley
import math


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