Machinist Toggle Recommendation?

Ok folks I got more questions on the clamping.

I'm looking for a few toggle clamps to hold down plates to be drilled onto a flat plate with dowel pins. Can someone recommended me a few sources for those?

The job is to countersink 6 existing holes on a 1/8" thick steel plate (100 of them) that will be located onto a flat piece of aluminum. I figured a couple of tight toggle clamp will be the easiest to work with the dowel pins (there are other holes that don't need to be countersunk, I'll use those for locating the plate.）

if you guys have any other clamping ideas pls advise.

thanks

Daz

not a toggle clamp, but would this do the job?
http://polarguitars.com/ucnc/images/...clamps_105.jpg

If you can drill and tap a few holes into the sub-plate (Fixture), then use 2 or 3 low-profile toggle clamps like you sugested.
They're quick and easy. Great for repetitive work.
AND you won't have to fumble around with wrenches, nuts, clamps, etc between part changes.
toggle clamp

phew, i thought they're $$$.

Surplus Center has a bunch of them.
Surplus Center
Hoss

Will this type of system hold parts for mill operations?
I'm new to machine tool operations and from some of my reading the forces exerted on the material can exceed 1000 lbs on cutting edge.
I guess if you have some sort of fixed stops and one of these pushing against it would hold. My experience with down force type toggle clamps showed they worked best for assembly work only.
Note: I have these on my table saw and router table fixtures for holding material and they have proven to be a pain to adjust for even holding wood down.
I could have cheap ones or I don't have right ones for right application. "normal"

Information to consider
md

I was a foreman in a production machine shop, we used toggle clamps (De-Sta-Co) for many of the fixtures but it depended on the task at hand, drilling, tapping, reaming, light machining.
Countersinking holes in a plate like the OP wants to do would no problem.
Some of the clamps have a holding force of several hundred pounds each.
Hoss

countersinking in aluminium is a light job with minimal side forces and no upward forces. id think a couple of good strong toggles would be more than adequate. after all, its a job you can literally hold by hand on a drill press.

Quote:

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Originally Posted by mountaindew

I'm new to machine tool operations and from some of my reading the forces exerted on the material can exceed 1000 lbs on cutting edge.

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1000lbs of side force is a 40-80HP cut. hes got a tormach. 1.5hp at 6000rpm or so on a good day.

Quote:

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Originally Posted by ihavenofish

1000lbs of side force is a 40-80HP cut. hes got a tormach. 1.5hp at 6000rpm or so on a good day.

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True, most books are based on large commercial equipment.
Just for fun I looked up a haas 750 mill x,y, or z axis motors and the max thrust is 2750 lbs for a 30hp mill.
Wow the table moving around would crush you if im reading that right.
md

Quote:

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Originally Posted by mountaindew

True, most books are based on large commercial equipment.
Just for fun I looked up a haas 750 mill x,y, or z axis motors and the max thrust is 2750 lbs for a 30hp mill.
Wow the table moving around would crush you if im reading that right.
md

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mmm crushed operators. my maho has a 7kw servo on the y axis. that could be used as a press, haha.

150 lb ft on the spindle in the lowest gear. that's 150lbs at a foot, or 900lbs on a 4" face mill. that's pretty extreme. few machines these days have that much torque.