Miniature Vacuum Ejector (Air Powered Vacuum Pump)

thingiverse

I created this miniature air pump, often referred to as an ejector, for use with a vacuum cup in robotic manipulation systems. By blowing air into one side at 50 PSI, you can generate approximately 5 PSI of vacuum pressure at the side port. The benefit of using a lightweight eductor right at the end-effector (as opposed to a remotely located vacuum pump) is that you have instant control over the vacuum action for faster pickup and eject times. This device measures only 1.225" in length and weighs less than 5 grams. It's designed specifically for use with 10-32 pneumatic fittings. I've included the Solidworks part file, allowing anyone to optimize it or add mounting features if needed. **Printing** Use a line width of 0.35mm and a layer thickness of 0.2mm. I printed this design using PLA, but ABS or PETG should also work well. **Post Printing** After printing, you'll need to clean out the internal nozzle orifice with a 0.047" diameter drill bit. Additionally, tap the input and side vacuum ports with a 10-32 tap.