Table Tennis Ball Serving Machine
Print Profile(1)
Description
This is a table tennis ball serving machine I designed. From the conceptual design to the final product, it took two months, with several iterations and optimizations along the way to solve numerous challenges. These included high-speed vibration, jamming of the screw conveyor, portable power supply, preventing balls from falling out of the hopper, and the selection of a suitable general-purpose motor, among others. The current version has reliably served 3000 balls.
The machine's construction is divided into the following modules: extruder, screw conveyor, extruder control, screw control, battery pack, charging/discharging, and anti-jamming.
Below is a list of parts needed besides the 3D printed components. (Consider having a few extra screws on hand):
1. BL2717 external rotor brushless motor 12V + motor wires (NIDEC recommended; Guomeng is also an option) * 2
2. N20 miniature geared motor * 1
3. PWM speed controller * 2
4. Voltage regulator * 1
5. 12V charging/discharging module * 1
6. 18650 battery holder * 1
7. 18650 batteries * 2
8. Bearings (inner diameter 6, outer diameter 13, thickness 5) * 1
9. Rocker switch (21*15) * 1
10. Pan head machine screws M2.5*5 (for securing the brushless motor; motor supplier may not include screws, purchase separately) * 4
11. Pan head self-tapping screws ST3*8 (for securing all printed parts) * 48
12. 24AWG wire, black * 1 meter
13. 24AWG wire, red * 1 meter
14. White silicone tube (inner diameter 30.5) * 2
Documentation (1)
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
Comment & Rating (3)