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put hinge of small dispenser gears in between the two plates

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This commit is contained in:
Simon Pirkelmann 2019-09-16 11:05:40 +02:00
parent e91578347c
commit 817db1a623
3 changed files with 68 additions and 46 deletions
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6
prototype/circles.py
View File

@ -184,6 +184,7 @@ class PlateLayout:
# parameters for dispenser gears
self.dispenser_module = 1.0
plate_height = 8.0
dispenser_1_target_pitch_diameter_big = 50.0
dispenser_1_target_pitch_diameter_small = 15.0
dispenser_1_teeth_big = int(dispenser_1_target_pitch_diameter_big/self.dispenser_module)
@ -259,7 +260,8 @@ class PlateLayout:
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
h = plate_height/2.0
offset_1 = sqrt((p1 / 2 + p2 / 2) ** 2 - (p1 / 2 + a1 + h) ** 2) - p2 / 2 - a2
print("dispenser 1 offset = {}".format(offset_1))
print(" big circle tangent points: ")
@ -321,7 +323,7 @@ class PlateLayout:
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
offset_2 = sqrt((p1 / 2 + p2 / 2) ** 2 - (p1 / 2 + a1 + h) ** 2) - p2 / 2 - a2
print("dispenser 2 offset = {}".format(offset_2))
print(" small circle tangent points: ")

98
prototype/dispenser_gears.svg
View File

@ -9,7 +9,7 @@
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xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
sodipodi:docname="feeder_gears.svg"
sodipodi:docname="dispenser_gears.svg"
width="210mm"
height="297mm"
viewBox="0 0 744.09448819 1052.3622047"
@ -23,17 +23,17 @@
borderopacity="1.0"
inkscape:pageopacity="0.0"
inkscape:pageshadow="2"
inkscape:zoom="1.8101934"
inkscape:cx="196.01806"
inkscape:cy="474.03501"
inkscape:zoom="2.5600001"
inkscape:cx="116.84746"
inkscape:cy="648.90954"
inkscape:document-units="mm"
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showgrid="false"
inkscape:window-width="960"
inkscape:window-height="1028"
inkscape:window-x="960"
inkscape:window-width="1920"
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inkscape:window-x="0"
inkscape:window-y="24"
inkscape:window-maximized="0" />
inkscape:window-maximized="1" />
<defs
id="defs4" />
<metadata
@ -72,7 +72,7 @@
</g>
<g
info="N:16; Pitch:22.2632550254; Pressure Angle: 20.0"
transform="matrix(0.98261279,-0.18566662,0.18566662,0.98261279,416.37006,413.37433)"
transform="matrix(0.99144484,0.13052619,-0.13052619,0.99144484,402.83559,425.52773)"
inkscape:label="Gear16"
id="g4161">
<path
@ -89,38 +89,38 @@
id="circle4165" />
</g>
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style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.81840914px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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inkscape:connector-curvature="0" />
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<text
xml:space="preserve"
style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
x="322.07031"
y="310.56531"
x="325.39062"
y="320.33093"
id="text4214"
sodipodi:linespacing="125%"><tspan
sodipodi:role="line"
id="tspan4216"
x="322.07031"
y="310.56531"
x="325.39062"
y="320.33093"
style="font-size:6.25px">p1/2</tspan></text>
<text
xml:space="preserve"
style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
x="391.20636"
y="384.9657"
x="385.5423"
y="393.36414"
id="text4214-3"
sodipodi:linespacing="125%"><tspan
sodipodi:role="line"
id="tspan4216-6"
x="391.20636"
y="384.9657"
x="385.5423"
y="393.36414"
style="font-size:6.25px">p2/2</tspan></text>
<text
xml:space="preserve"
@ -133,7 +133,7 @@
x="228.71094"
y="324.62781"
style="font-size:6.25px"
id="tspan4246"> p1/2 + a1</tspan><tspan
id="tspan4246"> p1/2 + a1 + h</tspan><tspan
sodipodi:role="line"
x="228.71094"
y="332.44031"
@ -141,27 +141,27 @@
id="tspan4248">(= Outside circle)</tspan></text>
<path
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
d="m 351.95313,417.20593 c 0,4.10157 0,4.10157 0,4.10157"
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style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
d="m 294.92188,292.01062 c 3.51562,-2.14844 3.51562,-2.14844 3.51562,-2.14844"
d="m 293.95513,292.83926 c 3.51562,-2.14844 3.51562,-2.14844 3.51562,-2.14844"
id="path4260"
inkscape:connector-curvature="0" />
<path
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
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d="m 401.12449,427.46576 c 4.29687,-3.51562 4.29687,-3.51562 4.29687,-3.51562"
id="path4262"
inkscape:connector-curvature="0" />
<flowRoot
@ -187,41 +187,41 @@
x="51.5625"
y="596.11218"
style="font-size:6.25px" /></flowRegion><flowPara
id="flowPara4278">(p1/2 + p2/2)**2 = (p1/2 + a1)**2 + (p2/2 + a2 + x)**2</flowPara><flowPara
id="flowPara4278">(p1/2 + p2/2)**2 = (p1/2 + a1 + h)**2 + (p2/2 + a2 + x)**2</flowPara><flowPara
id="flowPara4374" /><flowPara
id="flowPara4372"> =&gt; Offset x = sqrt((p1/2 + p2/2)**2 - (p1/2 + a1)**2) - p2/2 - a2</flowPara></flowRoot> <text
xml:space="preserve"
style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
x="324.21875"
y="428.14343"
x="323.4375"
y="435.37"
id="text4296"
sodipodi:linespacing="125%"><tspan
sodipodi:role="line"
id="tspan4298"
x="324.21875"
y="428.14343"
x="323.4375"
y="435.37"
style="font-size:6.25px">x</tspan></text>
<path
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
d="m 295.70313,417.49892 c 0,4.10157 0,4.10157 0,4.10157"
d="m 295.50782,427.91413 c 0,4.10157 0,4.10157 0,4.10157"
id="path4252-7"
inkscape:connector-curvature="0" />
<path
style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
d="m 417.77344,417.10829 c 0,4.10157 0,4.10157 0,4.10157"
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inkscape:connector-curvature="0" />
<text
xml:space="preserve"
style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
x="373.82812"
y="427.36218"
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y="435.56531"
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sodipodi:linespacing="125%"><tspan
sodipodi:role="line"
id="tspan4323"
x="373.82812"
y="427.36218"
x="355.07812"
y="435.56531"
style="font-size:6.25px">p2/2 + a2</tspan></text>
<flowRoot
xml:space="preserve"
@ -239,7 +239,8 @@
id="flowPara4333">p2: Pitch diameter gear 2</flowPara><flowPara
id="flowPara4335">a1: Addendum gear 1 = module 1</flowPara><flowPara
id="flowPara4337">a2: Addendum gear 2 = module 2</flowPara><flowPara
id="flowPara4376">x : Offset</flowPara></flowRoot> <flowRoot
id="flowPara4376">x : Offset</flowPara><flowPara
id="flowPara4212">h : half of the plate height</flowPara></flowRoot> <flowRoot
xml:space="preserve"
id="flowRoot4360"
style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"><flowRegion
@ -305,7 +306,7 @@
</g>
<g
info="N:53; Pitch:16.6974412691; Pressure Angle: 25.0"
transform="translate(224.50825,840.97022)"
transform="translate(147.94575,906.59522)"
inkscape:label="Gear53"
inkscape:transform-center-x="-0.086406844"
id="g6277">
@ -412,4 +413,19 @@
x="0"
style="font-style:normal;font-weight:normal;font-size:13px;font-family:'Bitstream Vera Sans', sans-serif;text-align:center;text-anchor:middle;fill:#f6921e">Base diameter: 35.346 mm</text>
</g>
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10
prototype/notes.txt
View File

@ -8,11 +8,15 @@ Lasercut segments for plate. Profile: FLB_Sperrholz_4mm_Natur_new
Important: SVG produced by python script needs to be openend, transformed and saved in inkscape, otherwise import in CorelDraw fails
In progress:
- automate generation of plate segment
TODO:
- stack 2 plates for better stability (add cuts at small circles)
- second ring above the first plate to fix the containers and hide the gear mechanic (or manufacure them from acrylic to show the mechanic)
- think about if stacked plate is to thick for a single gear (i.e. we may need two gears in order to transfer motion from below the plate to dispensers)
- whole for hinges of big dispenser gears
- shovels for dispensers by cutting segments from a sphere
DONE:
- stack 2 plates for better stability (add cuts at small circles)
- automate generation of plate segment
- connectors for segments (jigsaw puzzle style)
- think about if stacked plate is to thick for a single gear (i.e. we may need two gears in order to transfer motion from below the plate to dispensers) -> solved by moving hinge point of the gear in between the two plates