,cnc machinist,cnc manufacturing,cnc mechanic,cnc mill,cnc milling center,cnc milling companies,cnc milling tools,cnc parts,cnc plasma cutter,cnc plasma cutting,cnc plasma table,cnc production,cnc router table,cnc screw machine,cnc service,cnc swiss,cnc turning,cnc turning center,cnc turning centers,cnc vertical lathe,horizontal cnc,how to cnc machine,machining cnc,manufacturing cnc machines,okuma cnc,plasma cnc machine,production cnc machining,troubleshooting cnc machines,used cnc machine tools,used cnc milling machines,vertical cnc lathe,what can a cnc machine make
Tomi Malkki made a 1/16 ratio 3d printed gearbox that he uses to modify torque and RPM of salvaged DC motors.Project description with gearbox specs:
This gearbox has the ratio of 1/16. With this 12v motor it can lift around 3,5kg (straight from the shaft.) 2 washers should place between each gear (see details in video). It reduces heat between plastic parts when 2 washers are rubbing each other. Adding lots of bearing grease between everything is essential. Depending on your printer tolerances you might need drill out some holes bigger. Motor mount should be standard size.
Gears:
- layer 0.2
- infill 25%
- perimeters 3
- bottom layer 2, top 3
Covers:
- Layer 0.3
- infill 20%
- perimeters 2
- bottom layer 2, top 3
Here is the assembly video:
He also cleaned all the surfaces with oil and dirt cleaner, then added a layer of primer, 2 layers of surface paint and 2 layers of clear lacquer, he is using acrylic spray paints.
This is a very useful DIY project that can power many small projects like RC vehicles or robots.
All the files and instructions can be found at:
http://www.instructables.com/id/3d-Printed-Gearbox-for-Small-Dc-Motors/
Thingiverse page:
http://www.thingiverse.com/thing:2227131
