Author Topic: 90 degree joint in rotating shafts  (Read 11405 times)

Offline steam guy willy

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Re: 90 degree joint in rotating shafts
« Reply #15 on: November 15, 2016, 03:41:50 PM »
Clever stuff, and i suppose there is not much backlash ??
wilbert,

Offline Brian Rupnow

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Re: 90 degree joint in rotating shafts
« Reply #16 on: November 15, 2016, 07:12:03 PM »
I'm almost there. I have two pieces left to make, and have to scare up a pulley. So far I'm happy with what I am seeing, but I need those last two pieces before I can declare a success or a failure.

Offline philjoe5

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Re: 90 degree joint in rotating shafts
« Reply #17 on: November 15, 2016, 08:18:34 PM »
I like it :ThumbsUp:

Cheers,
Phil
If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.  - Mark Twain

Offline Brian Rupnow

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Re: 90 degree joint in rotating shafts
« Reply #18 on: November 15, 2016, 10:30:42 PM »
So, there we have it, except for a drive pulley. Does it work?--Well, sort of. I grabbed one shaft with my (shudder) vice grips, and turned it. It is very stiff, but is looked as if it wanted to work. The little square bronze parts that have a 5/16" round "extension" on the bottom that passes thru the 1/4" steel plate need to have a retainer on them, or at one position in the sequence they pull straight up out of the plate. I knew it would try and do that, so I had pre-made a pair of bronze "retaining collars" to slip over the ends and trap the plate. I didn't make anything mechanical to do this, just a bit of 620 Loctite retaining compound. I want to give the Loctite a few hours to set up, and during that time I will make a pulley to go on the input shaft.

Offline Brian Rupnow

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Re: 90 degree joint in rotating shafts
« Reply #19 on: November 15, 2016, 11:01:28 PM »
YES!!!! IT WORKS!!! I have to put a motor on it and drive it for a while to get any tight spots out of it, but I did find a big V pulley to fit and have been turning it by hand. Video tomorrow.

Offline crueby

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Re: 90 degree joint in rotating shafts
« Reply #20 on: November 15, 2016, 11:10:45 PM »
Neat! Looking forward to see it go, and see how it behaves. Now it needs a motor, and a conveyor system to drive at right angles...

Offline Brian Rupnow

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Re: 90 degree joint in rotating shafts
« Reply #21 on: November 16, 2016, 12:02:33 AM »
Couldn't wait for tomorrow. Here is a video of the beast operating.---Brian
<a href="https://www.youtube.com/watch?v=1FsYYPdO7-I" target="_blank">http://www.youtube.com/watch?v=1FsYYPdO7-I</a>

Offline crueby

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Re: 90 degree joint in rotating shafts
« Reply #22 on: November 16, 2016, 12:26:00 AM »
That's fantastic!

Looks like a very even motion on the output shaft. As Paul mentioned, it would most likely work on other angles too, not just 90, and at other heights which would be harder to do with gears. Very clever.

Offline b.lindsey

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Re: 90 degree joint in rotating shafts
« Reply #23 on: November 16, 2016, 12:47:50 AM »
Very cool Brian and interesting to watch just on its own. Well done  :ThumbsUp:

Bill

Offline Brian Rupnow

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Re: 90 degree joint in rotating shafts
« Reply #24 on: November 16, 2016, 01:37:13 AM »
As promised, here is an up to date set of drawings as pdf files. Please can someone let me know if you are able to download them okay.---Brian
https://www.mediafire.com/?9sgfgicxi5u4p56

Offline philjoe5

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Re: 90 degree joint in rotating shafts
« Reply #25 on: November 16, 2016, 03:31:57 AM »
Very cool machine Brian.  Plans downloaded just fine

Cheers,
Phil
If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.  - Mark Twain

Online Roger B

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Re: 90 degree joint in rotating shafts
« Reply #26 on: November 16, 2016, 11:19:06 AM »
Very nice  :ThumbsUp:  :ThumbsUp:  :wine1:
Best regards

Roger

Offline philjoe5

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Re: 90 degree joint in rotating shafts
« Reply #27 on: November 16, 2016, 05:42:55 PM »
The right angle drive that we have at Rough & Tumble is called an "Almond Drive".



I always wanted to make one but capturing the ball in the casting was something I hadn't figured out.  Brian's design looks doable by me so I'll try making it

Cheers,
Phil
If you pick up a starving dog and make him prosperous, he will not bite you. This is the principal difference between a dog and a man.  - Mark Twain

Offline Tennessee Whiskey

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Re: 90 degree joint in rotating shafts
« Reply #28 on: November 16, 2016, 06:49:37 PM »
Apologies if needed Brian,  but,  how do they do that ball in a casting thing anyhoo?  BTW Brian, that mechanism is neater than blue dot tail lights  :ThumbsUp: :ThumbsUp:

Cletus

Offline Brian Rupnow

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Re: 90 degree joint in rotating shafts
« Reply #29 on: November 17, 2016, 12:28:11 AM »
No apology needed Cletus. I don't know how they do that either. that was Philjoe's post.---Brian

 

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