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tennis ball turret — zdjęcie 1
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tennis ball turret

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a turret to shoot tennis balls

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Źródło
Printables
Licencja
Creative Commons — Attribution — Noncommercial

This is a turret driven by a NEMA 17 with a flywheel shooter driven at 11 000 RPM. It has an adjustable shooter angle ranging from 20 to 47 degrees. The shooter uses a direct-drive shooter motor for optimal packing and minimal losses. 

It uses M4 mounting hardware with some set screws and a 100mm ID lazy susan

assembly 

I would recommend using heat-set inserts where M3 screws are placed and setting 

first, assemble the shooter. Start by integrating the hooded segment of the shooter between the 2 standoffs; place the 2 surrounding plates with the servo in the correct position.

Next, add the main side plates and heat-set inserts to the bottom of the main side plates. Afterwards, add the bottom gear with the bearing attached; don't forget to place the countersunk screw to mount the bearing to the bottom plate. 

Mount the bottom plate and place the small gear for the NEMA 17, then mount the NEMA 17 with its spacer. 

Finish by mounting the flywheel motor in its housing and the wheel with the bearing.

https://cad.onshape.com/documents/2db8f247e047c4e9b179d782/w/aa1ee698e120064bd800d62b/e/6e9d7b147747ca9cf24a2495?renderMode=0&uiState=6af4483d768dfcc0688b1927 

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