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MuesliMix
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started working on figuring out cuts for dispenser gears

master
Simon Pirkelmann 2019-09-03 22:34:20 +02:00
parent f34775eb3f
commit 8940f5965f
2 changed files with 459 additions and 59 deletions
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103
prototype/circles.py
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@ -5,10 +5,11 @@ import operator
def svg_circle(id, name, c, r):
# create circle object in svg notation
text = [' <circle\n',
' id="circle{}"\n'.format(id),
' inkscape:label="{}"\n'.format(name),
' style="fill:none;stroke:#000000;stroke-width:1.0"\n',
' style="fill:none;stroke:#000000;stroke-width:1.0mm"\n',
' r="{}mm"\n'.format(r),
' cy="{}mm"\n'.format(c[1]),
' cx="{}mm" />\n'.format(c[0])]
@ -174,10 +175,10 @@ class PlateLayout:
self.target_plate_radius = 155.0
self.target_radius_1 = 50.0
self.target_radius_2 = 20.0
teeth = 360
teeth = 200
D = 2 * self.target_plate_radius
m = D/teeth/math.pi
m = D/teeth
print("plate radius = {:6.2f} mm".format(self.target_plate_radius))
print("big circle radius = {:6.2f} mm".format(self.target_radius_1))
@ -187,6 +188,29 @@ class PlateLayout:
print("pitch diameter: D = {} mm".format(D))
print("module: M = {} mm".format(m))
# parameters for dispenser gears
self.dispenser_module = 1.5
dispenser_1_target_pitch_diameter_big = 80.0
dispenser_1_target_pitch_diameter_small = 25.0
dispenser_1_teeth_big = int(dispenser_1_target_pitch_diameter_big/self.dispenser_module)
dispenser_1_teeth_small = int(dispenser_1_target_pitch_diameter_small/ self.dispenser_module)
dispenser_1_pitch_diameter_big = self.dispenser_module * dispenser_1_teeth_big
dispenser_1_outer_diameter_big = dispenser_1_pitch_diameter_big + 2 * self.dispenser_module
dispenser_1_pitch_diameter_small = self.dispenser_module * dispenser_1_teeth_small
dispenser_1_outer_diameter_small = dispenser_1_pitch_diameter_small + 2 * self.dispenser_module
dispenser_2_target_pitch_diameter_big = 40.0
dispenser_2_target_pitch_diameter_small = 25.0
dispenser_2_teeth_big = int(dispenser_2_target_pitch_diameter_big / self.dispenser_module)
dispenser_2_teeth_small = int(dispenser_2_target_pitch_diameter_small / self.dispenser_module)
dispenser_2_pitch_diameter_big = self.dispenser_module * dispenser_2_teeth_big
dispenser_2_outer_diameter_big = dispenser_2_pitch_diameter_big + 2 * self.dispenser_module
dispenser_2_pitch_diameter_small = self.dispenser_module * dispenser_2_teeth_small
dispenser_2_outer_diameter_small = dispenser_2_pitch_diameter_small + 2 * self.dispenser_module
# plot plate
plt.figure(2)
plt.plot(0.0, 0.0, 'o')
@ -220,6 +244,13 @@ class PlateLayout:
circle = plt.Circle((x,y), self.target_radius_1, fill=False)
plt.gca().add_artist(circle)
p1 = dispenser_1_pitch_diameter_big
p2 = dispenser_1_pitch_diameter_small
a1 = self.dispenser_module
a2 = self.dispenser_module
offset_1 = sqrt((p1 / 2 + p2 / 2) ** 2 - (p1 / 2 + a1) ** 2) - p2 / 2 - a2
print("dispenser 1 offset = {}".format(offset_1))
print(" big circle tangent points: ")
for k in range(0, self.N):
x = coords[k][0] * outer_radius
@ -255,6 +286,13 @@ class PlateLayout:
circle = plt.Circle((x, y), self.target_radius_2, fill=False)
plt.gca().add_artist(circle)
p1 = dispenser_2_pitch_diameter_big
p2 = dispenser_2_pitch_diameter_small
a1 = self.dispenser_module
a2 = self.dispenser_module
offset_2 = sqrt((p1 / 2 + p2 / 2) ** 2 - (p1 / 2 + a1) ** 2) - p2 / 2 - a2
print("dispenser 2 offset = {}".format(offset_2))
print(" small circle tangent points: ")
for k in range(0, self.N):
x = coords_2[k][0] * outer_radius
@ -272,62 +310,8 @@ class PlateLayout:
plt.plot(t1[0], t1[1], 'o')
plt.plot(t2[0], t2[1], 'o')
# for k in range(0, self.N):
#
# t1, t2 = compute_tangent_points((0,0),(x,y), target_radius_1)
# self.tube_1_tangents[k] = (t1, t2)
#
# plt.plot(t1[0] / 1000, t1[1] / 1000, 'o')
# plt.plot(t2[0] / 1000, t2[1] / 1000, 'o')
#
# angle = arctan2(y,x) * 360.0 / (2.0 * math.pi)
# dist = (x**2 + y**2)**0.5
#
# angle_t1 = arctan2(t1[1], t1[0]) * 360.0 / (2.0 * math.pi)
# dist_t1 = (t1[0] ** 2 + t1[1] ** 2) ** 0.5
#
# angle_t2 = arctan2(t2[1], t2[0]) * 360.0 / (2.0 * math.pi)
# dist_t2 = (t2[0] ** 2 + t2[1] ** 2) ** 0.5
# print(" k = {}, (x,y) = ({:8.3f}, {:8.3f}), angle = {:8.3f} deg, dist = {:8.3f} mm".format(k, x, y, angle, dist))
# print(" t1 = ({:8.3f}, {:8.3f}), angle = {:8.3f} deg, dist = {:8.3f} mm".format(t1[0], t1[1], angle_t1,
# dist_t1))
# print(" t2 = ({:8.3f}, {:8.3f}), angle = {:8.3f} deg, dist = {:8.3f} mm".format(t2[0], t2[1], angle_t2,
# dist_t2))
# print("\n")
# tube1['coords'] = tube_1_coords
# tube1['tangents'] = tube_1_tangents
#
# tube_2_coords = {}
# tube_2_tangents = {}
# print(" coordinates:")
# for k in range(0,self.N):
# x = coords_2[k][0] * 1000
# y = coords_2[k][1] * 1000
#
# tube_2_coords[k] = (x, y)
#
# t1, t2 = compute_tangent_points((0, 0), (x, y), r * 100)
# tube_2_tangents[k] = (t1, t2)
# plt.plot(t1[0] / 1000, t1[1] / 1000, 'o')
# plt.plot(t2[0] / 1000, t2[1] / 1000, 'o')
#
# angle = arctan2(y, x) * 360.0 / (2.0 * math.pi)
# dist = (x ** 2 + y ** 2) ** 0.5
#
# angle_t1 = arctan2(t1[1], t1[0]) * 360.0 / (2.0 * math.pi)
# dist_t1 = (t1[0] ** 2 + t1[1] ** 2) ** 0.5
#
# angle_t2 = arctan2(t2[1], t2[0]) * 360.0 / (2.0 * math.pi)
# dist_t2 = (t2[0] ** 2 + t2[1] ** 2) ** 0.5
# print(" k = {}, (x,y) = ({:8.3f}, {:8.3f}), angle = {:8.3f} deg, dist = {:8.3f} mm".format(k, x, y, angle, dist))
# print(" t1 = ({:8.3f}, {:8.3f}), angle = {:8.3f} deg, dist = {:8.3f} mm".format(t1[0], t1[1], angle_t1,
# dist_t1))
# print(" t2 = ({:8.3f}, {:8.3f}), angle = {:8.3f} deg, dist = {:8.3f} mm".format(t2[0], t2[1], angle_t2,
# dist_t2))
# tube2['coords'] = tube_2_coords
# tube2['tangents'] = tube_2_tangents
#
# return tube1, tube2
pass
"""
input: file = svg with plate gear centered at (0,0)
@ -358,6 +342,7 @@ class PlateLayout:
f_lines.append('</svg>\n')
# write new svg image
fw = open('output.svg', 'w')
fw.writelines(f_lines)
fw.close()

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prototype/dispenser_gears.svg Normal file
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