Metal Stamping : Williamsburg Metal Stamping: Deep Drawn Aluminum Can

[silver760]

Is the sole purpose of drawing these part twice to provide the bottom with a right angled edge at the bottom instead of a radiused edge?

[Metstamper]

@silver760

The true purpose for the 2 operations is that the desired final dimensioned part can not

achieved in one operation because of the ratio of the beginning blank size to the finished diameter, thus a larger diameter preform is drawn and then reverse redrawn to the desired final size. Also incorporated in the final draw is a pinch trim operation that gives the can a finished edge.

[silver760]

Was this press converted from steam driven?It's certainly old enough to have been driven by steam! Mind you the design hasn't changed much in 200 years!! It's great to see such kit still in daily use and hasn't been replaced with "Hydroforming" machines,CNC spinning lathes etc.

[douro20]

What is the capacity of that press?

[TD227]

@douro20  The first press has a plunger pressure of 80 tons with an 11" stroke and the second press has a plunger pressure of 120 tons with a 15" stroke.

[cooldog60]

Good way to lose a hand! You could not do that in the stamping plant I worked at.

[qtrmiler1]

If you think this is cool then search for emecinc. Coil feed, fully automated, no wax, finished part every 4 seconds including blank, draw, reverse draw, third draw, wall iron and bottom forming.

[cooldog60]

Good way to lose a hand.

[Tranixx]

@cooldog60

first time i saw this: oh my got another "machine accident" but the press stops... *pff*

@metstamper:

u should adjust your top-stop angle, in this position its a hard work for the break to stop the ram.

optimal position of stop is 2-4 degrees overun. saves your clutch and brake, also one day the hand of a person.

[nikotinarr]

@cooldog60 You can't lose a hand because the machine is actioned with two hands. :)

[cooldog60]

@nikotinarr I worked in a stamping plant for 38 years. If a press recycles it will take your hand off. And they do recycle. You should never put your hands in a pnch point.

[bestamerica]

'

is that cooking pot

[dtiydr]

Having that as a 9 to 5 job i would kill my self after 1 hour.

[superemposed]

why doesnt the metal sheet crease? i have tried similar with a Hydraulic press but the sheet creases up.

[SuperCulloden]

That is one dangerous place. I am a Tool and Die Maker with extensive experience in metal stamping, including deep draw work. I have never in my life seen press operators being put in such danger as is displayed in this video.

With a rickety old press such as is shown here, rubber suckers at the end of hollow aluminium rods with handles and release buttons are what should be used, NOT a man's hands!

To me, Williamsburg Stamping is one disgusting place! Shame on its so-called management.

[TD227]

The press may be old but it's not rickety. It is well maintained and is equiped with an air clutch and brake system that is activated with dual palm buttons.

Both buttons need to be depressed simultaneously in order to activate the downstroke. If either hand is released before the 6 o'clock position the press stops on a dime.

[wileycoyoteengineer]

The title says deep drawn aluminum can but at Spartanburg Stainless we made stainless steel beer kegs. This looks like that is what this is.

[justandy333]

Wow. that is actually a really clever process. By the time it got to the reverse redraw stage id of thought the metal would rip. But its surprisingly malleable.

[wileycoyoteengineer]

I used to run a job like this about 3 years ago.

If the job ran good I could tell you what time it was by the number of parts had.

[duttsharad]

where is this from which country???

[TD227]

United States

[soco13466]

This here is a type of toggle press. Looks to be at least 20 yrs old. For chrissake adjust the top stop. Adjust it so that it barely starts down, safety factor. What if the brake fails for some reason? And hopefully the press has dual valves, wired in properly. Hope it has two palm buttons with anti-tie down. Meesa from Michigan, Meesa know these things. Been there done that. Last one out of Michigan, you know the old turn off the lights thing. Hail Granholm! 15% and rising!

[TD227]

Top Stop is properly adjusted (back 5 degrees from TDC)) and press is equipped with dual palm buttons that disengage clutch if released before 6 o'clock position.

[tonymgx]

you became crazy...8 hours of this shit?

[DrMetan]

very nice, thanks for uploading.

5* for this