I-beam connector?

[ned]

Hi all,

I want to clamp some I beams together like below, wondering what do people use and where would I buy such item's ....or how do I DIY it... wast thinking to fashion something with two plates and some threaded bar.

any and all suggestions appreciated

These are the beams, you can see I've temporarily used this clamp, but I need more clamping force

 

[Tigman]

Orbital Fasteners sell that stuff , I forget the name of it ! why not just drill the beams and bolt them together

 

[Tigman]

Lindaptor ! thats the stuff

 

[gordon stephenson]

As above. Or why not drill through the flanges and bolt direct?

 

[ned]

It's going to be a 10' x 6' CNC table.

I'm using the wight of the upper beams to align the lower beams, pull the lower beams onto the same plane.

After I have the table rectangle welded together I will remove the upper beams.

Sitting on the long axis of the cnc table like so:

I don't want to drill holes and bolt them, because I'll spoil the upper surface that the linear rails will sit on.

Tigman will check out that product you mentioned, thanks

 

[gaz1]

arnt those clamps similar to milling machine clamps ?

 

[ned]

Gaz I think you are correct, very very correct

Found these guys on ebay, reckon the will do the trick


https://www.ebay.co.uk/itm/Serrated...hash=item2ac85240b6:m:mharVHkHv7qp08VQLczkCiQ

 

[Hitch]

Worth buying yourself a couple of better clamps instead?

 

[awemawson]

It's a good excuse to buy more Carver welding clamps

 

[ned]

@awemawson my dad has some of them, they are tasty yes, I never realised they were specifically for welding, very good.

 

[8ob]

Am I the only one thinking two heavy square plates with holes in each corner top and bottom with some long studding to make a clamp

Bob

 

[hotponyshoes]

I don't expect the upper surface for the rails is so perfect that some de-burred holes are going to spoil it that much?

Would 4/8 small G clamps not sit inside the channel and do the job?
Otherwise some big nuts/bolts with a stack of washers on either end and another stack of washers the same thickness as the beam wedged in the sides to keep the bolt washers square?

 

[ned]

@8ob yep I did thank of that and its still a contender

@hotponyshoes love both of your ideas.

 

[hotponyshoes]

Proper job sell G clamps for about £1 each.
If you were doing this all the time then the proper clamps would be the best bet but for a 1-off job I would either use what I had or, if I was buying something, buy something I can use for something else afterwards

 

[Justme]

Am I the only one thinking two heavy square plates with holes in each corner top and bottom with some long studding to make a clamp

Bob

Sort of but I was thinking two smaller beam sections (angle, box ect) on a diagonal with two long bolts.

 

[RichardM]

How about that sort of thing?

 

[Fazerruss]

Here's some brackets I made to support a mezzanine in my workshop.
10*40 flat with some 8mm Sq welded in as a spacer.

 

[8ob]

Sort of but I was thinking two smaller beam sections (angle, box ect) on a diagonal with two long bolts.

On that theme Richie perhaps one piece of angle and make a big Ubolt from studding.

bob

 

[ned]

Cheers All )

@RicharmM what are those gadgets? They look ideal. I went ahead and made a basic plate clamp. I had the flat bar lying there (on the floor in the background) so it was easy and the threaded bar will end up costing me..... 36 euros, so not too bad.

The idea is that the table sides are clamped so tight as to resist the forces exerted on it when I'm welding. Then when I'm all done undo the clamps and their job is over. I'm going to weld the table super super slowly, over the course of a week or more, so as to avoid warping.

this the table

this the table now, with the beams laid on top

 

[Screwdriver]

I am not understanding why this inverted welding table is better than setting up a regular table with the product on top.