Home / How To / Arduino SCARA (Robot arm): Ball bearings: 7 steps (with pictures)

Arduino SCARA (Robot arm): Ball bearings: 7 steps (with pictures)



Note: 3D printed part names are formatted in bold to make them easier to recognize.

The robot arm consists of four main parts: Base Top Arm and Dispenser . A Guide can be printed if a suitable cover or tube cannot be found. It may also be appropriate to print a Funnel and Practice Platform for easier use. I used PrusaSlicer when I pressed a Prusa i3 mk3, but all disk software with intelligent bridging should work. If you are not sure whether your disk software uses intelligent bridging, open Funnel and slices in 0.2 mm storage height. The layers should run parallel to the cutout shown in the second image. If they do not, you may need to use a different disk software as this geometry is crucial for the storage release mechanism.

Recommended settings

Base: 2+ perimeter, .3mm maximum bearing height

Top: 2+ perimeter, .25mm maximum bearing height

Arm: 2+ perimeter ,. 25mm maximum bearing height

Dispenser: 2+ perimeter, .2mm maximum bearing height, intelligent bridging

Guide : 2+ perimeters, .2mm maximum bearing height, discover thin walls, edge

Funnel: 2+ perimeter, .2mm maximum bearing height, intelligent bridging

Funnel platform: 1

+ perimeter, .3 maximum bearing height, low filling

With all parts of the building plate, the pressure once took 10 hours and used 153 grams PLA filament. I have included the PrusaSlicer 3MF file with all models prepared for Prusa mk3, but if you use a different printer you can use the separated STL files.


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