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Rank: Administration
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Joined: 6/28/2008
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Location: Follansbee, WV
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Incremental Sheet Metal Forming
I found this PDF that explains the different types.
Apparently there are 4 methods to the Incremental Forming Process.
Negative die-less forming, also known as single point incremental forming (SPIF).
Positive die-less forming, also known as two point incremental forming (TPIF).
Negative with-die forming and Positive with-die forming.
I plan on trying the SPIF dieless method.
Certainly looks to be the easiest.
I picked up some .025 Aluminum sheet to start with, steel might be too tough to tackle but we'll see.
This video shows how the big boys do it with a die.
If it works, could be a cool way to make some custom covers and shields.
I made a couple tools to try, one has a .250 ball and the other .375, Rockwell 56 hard.
I won't bother to make a clamping system with De-Sta-Cos until I'm sure it works.
I'll start the experiment this weekend.
Hoss
Hoss attached the following image(s):
Gosh, you've... really got some nice toys here.-Roy Batty
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Rank: Administration
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I only had time for a quick experiment but it looks promising.
Just did a 1 inch circle pocket with the Mach wizard, .200 depth, 1000 rpm, 7 IPM, 15% stepover, .010 depth per pass.
Read thru a bunch more pdf's on the subject.
Read that faster spindle rotation and smaller tool size improve formability so I used the .250 tool.
There was too much flex in the thin aluminum plate so I reset with a piece of high density foam as a backer.
Worked ok but it left a little warpage.
A die would work better to give it a sharper form.
I'll try that, maybe make a fixture to hold the die and plate together.
I want to try oil instead of coolant too, might make a smoother finish.
More to come.
Hoss
Incremental Sheet Metal Forming SPIF 1st ExperimentVideo
Hoss attached the following image(s):
Gosh, you've... really got some nice toys here.-Roy Batty
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Rank: Newbie
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Location: Houston
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Have you done any more playing with this? Looks interesting.
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Rank: Administration
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Joined: 6/28/2008
Posts: 215
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Location: Follansbee, WV
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Nope, dead in the water.
Don't really have a need to make anything with it.
Hoss
Gosh, you've... really got some nice toys here.-Roy Batty
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