Thread: Metal Tab punch?

Jarad
Unfortunately your pic isn't showing up. (at least for me anyway) Just the dreaded red X. You might have to retry to upload it

regards
bollie7

Here's direct link to the image.


https://docs.google.com/leaf?id=0Bxp...ut=list&num=50

I think it may be called lancing. Do you normally need a large machine shop to do this or would it be possible for the hobbyist?

Hi Jared,
How big it is?
How thick is it?
How many do you want?
How accurate do they need to be?

Stuart

Alot of what you want to do would depend on the thickness of the material.

It would appear by the picture that it would be a multi opperation,stamping of the base 1st and then a 2nd opperation of forming the bend.

If the material is thin enough there is the chance with the correct forming die that you could do it with a Flypress/Swing press or even a reasonable size arbor press.

If the base material was much thicker than .040"/1mm you may be hard pressed performing it on a manual machine ( the overall size of the piece will also have a bearing on the load required to do the intial stamping.

If the material is thicker than the above sizes you may well have to look at a small Power press or possably a Clicking press,not sure about the USA but smaller mechanical presses are available in Australia on Ebay and other auction sites,depending on the size of the item you would probably require something in the range of 5/10 ton.

You would have to know the physical size of your dies prior tomaking a bid on an auction,you would need to know the opening of the press,the platten size whether the press has provision for extreactor pins (or maybe these can be made into your die),the length of stroke of the press,how much adjustment the maybe in the slide of the press.

Most smaller mechanical presses will reach the maximum tonnage .250"/6mm from the bottom of the stroke.

You used to be able to get punch sets for shapes like that to fit Whitney punches - I'd say a #4 or larger for something like that. Again, McMaster-Carr would have been a good call, but they no longer ship Internationally, and they seem to have really cut back on their Whitney punch parts too.

Thanks for all the info everyone! This answers my question for now.