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Author Topic: Ping pong ball launcher  (Read 14154 times)

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Offline CritchleyTopic starter

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Ping pong ball launcher
« on: January 18, 2007, 11:40:34 AM »
For my latest robot, I hope to have some kind of ping pong ball launching mechanism. Think of a tennis serving machine, except with ping pong balls. How exactly would this work though? Maybe I would use a pneumatic mechanism?

Any thoughts?

Offline trigger

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Re: Ping pong ball launcher
« Reply #1 on: January 18, 2007, 01:24:37 PM »
For my latest robot, I hope to have some kind of ping pong ball launching mechanism. Think of a tennis serving machine, except with ping pong balls. How exactly would this work though? Maybe I would use a pneumatic mechanism?

Any thoughts?

How about a spring-loaded armature that ejects the ping-pong ball when a pin blocking the armature is displaced, and the armature is moved back to the starting position by a servo? The pin could be servo-controlled for fully-automatic use or manually controlled (e.g., a trigger).
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Offline gamefreak

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Re: Ping pong ball launcher
« Reply #2 on: January 18, 2007, 09:45:44 PM »
well since im just starting on my none kit robot i would think a solonoid maybe. Have a pipe with a ramp on the end lead into the shooting chamber, then fire the ping pong after so many seconds or when a button is pressed.
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Offline Brandon121233

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Re: Ping pong ball launcher
« Reply #3 on: February 14, 2007, 10:07:44 PM »
I think it depends on how far and with how much force you intend to launch it with. You stated a tenis ball seving machine, so if you plan on it going over 20 or so feet (pretty far for a ping pong ball) I would suggest using a pneumatic device which would use like a paint ball CO2 tank with an electronic auctuator attached to some some 1.5 inch pvc pipe. For the lower end  (under 10 feet) some sort of servo activated spring launcher would be best. If you have any specific questions just email me at [email protected] and I'll try to get back to you as soon as possible.
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Offline Hal9000

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Re: Ping pong ball launcher
« Reply #4 on: February 15, 2007, 03:39:03 AM »
As above, it would be a matter of how far you wanted them to go. Being ping pong balls, they are normally far too light to do anything really far with, right?

This guy, as you can see, uses two big fast spinning wheels to chuck out the balls



This also looks good for the slower, but probably stronger (and not continuous fire)

http://mindstorms.lego.com/eng/inventions/invention.asp?id=%7BF59E3BB0-57C4-E211-96EE-598AF8DB26A7%7D&SlotN=2&galleryid=337

And, um, theres this weird looking thing

http://www.amazon.com/Ping-Pong-Ball-Launcher-Butterfly/dp/B000KC1L74


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Offline JesseWelling

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Re: Ping pong ball launcher
« Reply #5 on: February 15, 2007, 05:58:25 AM »
Quote
This guy, as you can see, uses two big fast spinning wheels to chuck out the balls

http://www.youtube.com/watch?v=RSCPLHfdpSA


the guy said it looked like an ice cream maker! :D

Offline Hal9000

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Re: Ping pong ball launcher
« Reply #6 on: February 15, 2007, 07:22:43 AM »
I cant hear anything on this PC because it has no speakers.

Lolz at the ice cream maker. Bet it tastes really yummy where HE gets it from! :)

There is a much more fun version of this (although cant find it at the moment) of the two wheels throwing cds. It looked lethal  :o
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Offline Sam_Charette

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Re: Ping pong ball launcher
« Reply #7 on: February 15, 2007, 12:29:29 PM »
I would go with the spinning wheels myself.  It's probably the easiest and cheapest way, and it works well.
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Offline ed1380

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Re: Ping pong ball launcher
« Reply #8 on: February 15, 2007, 04:24:13 PM »
How about a robot actuated air potato cannon, but smaller so it can fire a ping pong ball. and with a co2 tank, so you don't have to pump it up everytime.
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