Shaft Locking Device 1

[pdiculous963]

I am currently designing a lifting jig to lift a conical shaped piece of ceramic vertically. It will be lifted so that the small end is on top. The jig I am designing will be inserted through the small end, and then have shafts that extend to grip the ceramic. What I need to find is the clamping device for the shafts. I have looked at plunger clamps, but do not want any clamping force to be added by locking the shaft (for fear of an un-trained mechanic cracking the ceramic). I just want a mechanism to allow me to lock the shaft in place so it cannot move axially. Does anybody know of a product that is right for this application?

I thought about using threaded rod, but that would take more time than a shaft.

Thanks

 

[ornerynorsk]

Would something along the lines of this concept help?

http://www.mcmaster.com/#expansion-test-plugs/=nu0dx6

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[Compositepro]

A design similar to a collapsible grappling hook, perhaps?

 

[Tmoose]

So it is hollow?

How about 2 or 3 lifting tongs with curved, rubber lined jaws gripping the lip at 3 places.

http://www.bushman.com/index.php/content/below_the_hook/tongs

http://www.mooseknucklefishing.com/wp-content/uploads/2013/01/Lip-Grip-768x1024.jpg

 

[Jboggs]

One picture is worth a hundred useless replies. Please help us out with viduals.

 

[Tmoose]

My reply may be silly, but it hurt my feelings that you called it useless.

 

[ornerynorsk]

I though the OP described it quite well, in spite of no "viduals" .


It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[Jboggs]

Tmoose - My reply just ended up being posted right after yours. My comments were directed at the original poster, not any repliers. Sorry.

And yeah ornerynorsk, I could improve my spelling ("viduals") when typing on my laptop literally on my lap at home, half asleep.

 

[ornerynorsk]

Jboggs, LOL, you'll notice my spelling isn't so great, either.

It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.

 

[pdiculous963]

I appreciate your help, I can't pick it with "tongs" as there is a lid component. I have decided to go threaded with handles and guides as I'd like to put some positive pressure on the sides as it is only a 1° half apex angle cone.