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Home > Forums > Industrial / Manufacturing Engineers > Activities > Machines & Machining engineering Forum

How to chamfer 2' diameter plate

Read More Threads Like This One

tetwin11 (Mechanical)

19 Jun 12 16:05

We have a 2 foot diameter aluminum 6061-T6 plate, 1/2" thick. The two edges around the circumference are desired to be chamfered by ~1/16", 45 degrees. How does one make that chamfer?! I can't see how a mill could do it, and it wouldnt fit in any lathe I've ever seen.
Any thoughts?
Thanks!

looslib (Mechanical)

19 Jun 12 16:21

If your mill table is big enough it is easy.
Clamping the part becoms the issue, but that really isn't hard to solve, either.
As for lathes, you haven't looked hard enough. I used to run a veritcal lathe that could turn 10' diameter parts.

If this is a one off piece, then a hand grinder can give you a 'chanmfer'. 1/16" is more like a break edge, anyway.

"Wildfires are dangerous, hard to control, and economically catastrophic."

Ben Loosli

BillPSU (Industrial)

19 Jun 12 16:54

A hand held router with a chamfering tool with a guide bearing is another approach.

A vertical mill witha rotary table and a chamfering cutter would also work.

hydromarine (Mechanical)

19 Jun 12 18:07

That diameter would be classed as small in some machine shops there are plenty of lathes around for this type of work , very straightforward.

tetwin11 (Mechanical)

19 Jun 12 19:42

Thanks for all the responses. Looks like it is a pretty straightforward process. I like the mill with rotary table idea.
Thanks

Compositepro (Chemical)

20 Jun 12 13:32

A hand router with a pilot bit will do a very nice job very quickly. A pilot bit follows the edge very accurately.

racookpe1978 (Nuclear)

20 Jun 12 13:50

What is the needed accuracy of your edge, the chamfer, and the "roundness" of the 2 ft plate?

You're using 1/16 inch and 2 ft as if the technical accuracy "doesn't matter" very much. (No +/- tolerance to some 0.010 or 0.005 inch for example.)

If the chamfer is for a weld prep, hand grind it. You'll be within a 1/32 easy in only a few minutes.

juergenwt (Mechanical)

20 Jun 12 22:53

Take a file and go around-3 min. you are done. Looks like all that is needed is to break the sharp edge.

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