Eccentric clamp thickness

John Hasler said:
You'd have to get the T-nut to bind up and the cam to rotate against the work at exactly the same time. Otherwise either the nut will just move in the slot or you won't be able to turn the screw far enough to engage the cam because it will tight in the nut.
Click to expand...

So is this why the t slot clamps have a set screw in the t-nut? You would then position the t-nut, tighten the setscrew so that the t-nut doesn't move, then tighten the cam screw to secure the work, correct? I was wondering what that set screw was for...
 
Ripthorn said:
So is this why the t slot clamps have a set screw in the t-nut? You would then position the t-nut, tighten the setscrew so that the t-nut doesn't move, then tighten the cam screw to secure the work, correct? I was wondering what that set screw was for...
Click to expand...

I assume that's how they work. I don't have any. It would be more convenient and elegant to only have to turn one screw but I haven't figured out how to make it work yet.
 
I just thought of a way that it could be done with a single screw. I may have to try it out first to test it, but it would be pretty simple and like you said, very convenient.
 
Ripthorn said:
I just thought of a way that it could be done with a single screw. I may have to try it out first to test it, but it would be pretty simple and like you said, very convenient.
Click to expand...

Can you post an explanation or better yet a sketch?
 
T Slot Eccentric Clamp with Single Screw

Here is a sketch of my idea for a t-slot clamp that locks down with a single screw. The key to this is the eccentric screw has the last little bit turned down to act as a piston on a spring loaded pin. As the eccentric gets tightened, it pushes down on the pin, which then locks the t-nut. As I am typing this out, I don't know just how well it will work. This is an idea that I have spent all of 10-15 minutes on. If you successfully amke one, let me know. It will be a little while before I am able to get in the shop to try it out. Sorry if the sketch is small.

tSlotEccentricClamp_zps2ae6099a.png

tSlotEccentricClamp_zps2ae6099a.png
 
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