Part 2 - YA DIY Table Tennis Robot - A Vertical Archimedes’s Screw Ball-Returning System
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- Опубликовано: 13 сен 2024
- More Info;
Part 1 - YA DIY Table Tennis Ping Pong Robot
• Part 1 - YA DIY Table ...
Part 3 - YA DIY Table Tennis Ping Pong Robot - Coupled Operations
• Part 3 - YA DIY Table ...
Part 4 : YA DIY Table Tennis Ping Pong Robot - Closed-Loop Field Test in 4x Mode • Part 4 : YA DIY Table ...
In order to have a more or less continuous ball stream for practicing, an attempt was made to have a DIY ball returning device to couple to the homemade robot (Part 1). Two options had been looked into, and here is one of them. All parts are either from local flea-markets, garage junk piles, or Home Depot, Ace Hardware etc..
Thank you for watching.
Sounds:
Project SAM: Free Orchestra/Short Strings
SpitfireAudio: BBCSO Discover/Flutes/Celli
SpitfireAudio: LABS/Soft Piano
Very nice
Excellent 😊
Please can you tell the dimensions of pvc pipe, inner and outer diameter of discs.also the calculation
Inner tube: It is not PVC but just a standard postal mailing paper tube, diameter = 2 1/8"
Disc inner diameter = 3 1/2" (= size of the hole-saw blade used to cut the inner hole of the discs)
Disc outer diameter = 6 5/8"
Sorry, no calculations were done. The joined-paper discs are simply "empirically" stretched out along the longitudinal direction till the inner edge of the disc physically touches the inner tube surface, and then secured with hot glue. The final pitch obtained this way is about 4 inches.
Can I know how you installed the ball bearings to the rotor attached to a rod
Got it took a pulley and put 2 bearings on either side in lathe
Sorry I did not machine or assemble the "rotor/bearing/casing" by myself. It came as a single unit that I picked up in a flea market and did not know what it was originally intended for (see Part 3 02:09 and Part 2 02:48-03:00). The "dark colored ring area" is the sealed bearing, and there is already a pre-threaded 1/4-20 hole in the rotating shaft body for threaded rods. It looks like the bearing was directly press-fitted to the shaft with tight tolerance.