Model Gearbox
par AG3D_Manufacturing
Fichiers imprimables (26)
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stlRubber_Damper.stl
119 Ko · 2 782 téléchargements
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stlShaft4.stl
168 Ko · 2 777 téléchargements
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stlBearing_Cap_Output.stl
133 Ko · 2 781 téléchargements
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stlBig_Gear.stl
187 Ko · 2 777 téléchargements
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stlShaft2.stl
225 Ko · 2 778 téléchargements
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stlOutputBearingStandin.stl
755 Ko · 2 771 téléchargements
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stlSnap_Ring_2.stl
90 Ko · 2 775 téléchargements
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stlVibration_Base.stl
370 Ko · 2 771 téléchargements
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stlSnap_Ring_1.stl
89 Ko · 2 773 téléchargements
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stlShaft3.stl
234 Ko · 2 772 téléchargements
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stlCasing_Input_Face_Unfilleted.stl
591 Ko · 2 771 téléchargements
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stlCasted_Frame_Rail_2_x2.stl
96 Ko · 2 775 téléchargements
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stlShaft1.stl
182 Ko · 2 771 téléchargements
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stlCasted_Frame_Base.stl
219 Ko · 2 772 téléchargements
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stlCasing_Input_Face.stl
1.2 Mo · 2 769 téléchargements
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stlCasted_Frame_Rail_1_x3.stl
76 Ko · 2 772 téléchargements
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stlKey_0.375.stl
1 Ko · 2 765 téléchargements
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stlKey_0.5.stl
1 Ko · 2 779 téléchargements
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stlInputBearingStandin.stl
752 Ko · 2 768 téléchargements
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stlLittle_Gear.stl
162 Ko · 2 767 téléchargements
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stlCasing_Output_Face.stl
1.2 Mo · 2 763 téléchargements
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stlCasing_Output_Face_Unfilleted.stl
592 Ko · 2 758 téléchargements
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stlBearing_Cap_Input.stl
136 Ko · 2 761 téléchargements
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stlCasted_Frame.stl
1.2 Mo · 2 764 téléchargements
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stlBearing_Cap_Basic.stl
1.3 Mo · 2 763 téléchargements
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stlGearbox_Crank.stl
2.9 Mo · 2 765 téléchargements
Description
In our mechanical design course, we were tasked with designing a gearbox for a micro hydro generator. The gearbox was required to accept a high-torque, low-speed input from a water turbine and convert it into an output with low torque and high speed. Our group‘s solution was a 3-stage spur gear system, with a drive ratio of 18.34 (49.08RPM input, 900RPM output) producing 13 horsepower.
With a few modifications, I was able to create a 3d-printable model of the gearbox. I cut out the faces so that the system's inner workings would be visible and replaced the tapered roller bearings with skateboard bearings, but aside from that, this miniature model stays true to the original design. All parts except for the ball bearings, bolts, washers, and nuts are 3D-printed: https://youtu.be/b7kzGnCRKPg
I created this model to be compatible with 608 ball bearings when printed at 50% scale. In the video, you can see I'm driving the system in reverse, as the torque required to drive the input shaft was too much for my little drill (and likely would have ended up snapping the PLA input shaft anyway!) However, I have nevertheless included the crank I made that can be used to drive the input shaft once the system is broken in. Use with caution!
In addition to the provided STLs, you will need:
6 - 608 ball bearings (skateboard bearings)
32 - M3x16mm Allen screw
32 - M3 lock washers
16 - 1/4"x1" hex bolt
4 - 1/4"x2.5" hex bolt
24 - 1/4" flat washers
4 - 1/4" nylon lock nuts
If you strip any of the bores for the 1/4"x1" screws, you can substitute 5/16"x1" lag screws.
The banana for scale in the pictures is another design of mine: https://www.thingiverse.com/thing:3167156