Mechanical forming an expansion joint - GIF

Mechanical forming an expansion joint.

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Previously:

https://www.homemadetools.net/forum/...788#post183146
https://www.homemadetools.net/forum/...371#post166009
https://www.homemadetools.net/forum/...907#post175591
https://www.homemadetools.net/forum/...592#post170390
https://www.homemadetools.net/forum/...549#post170231

I tuned in to see how it was done, imagine my disappointment.

Quote:

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Originally Posted by Tooler2

I tuned in to see how it was done, imagine my disappointment.

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like you my interest was in the mechanics of the process

Here is one example of the internal mechanism

https://www.youtube.com/watch?v=t_324mPh7WI

This video shows the process: https://www.youtube.com/watch?v=oceO...d.%2CBangalore.
The short version is that there's a ring that expands on the inside. I think that the machine rotates once per cycle because the ring is segmented, so can't press evenly in a single stroke.

Neil

Fascinating piece of machinery but it does seem to epitomize the comment by an old farmer. "I can get any amount of people to help me on the farm, so long as I buy a machine that does 95% of the work".