Stamping Articles

Whether you're using a high-speed stamping press to make simple parts at breakneck speeds or doing something really tricky, like deep drawing a material that puts up a lot of resistance, the information in this technology area is sure to help. The articles, case studies, and press releases cover stamping presses, lubricants, and materials.

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Ask the Stamping Expert: How can I increase press speed without constant production stoppage

May 31, 2016 | By Dennis Cattell

Dennis Cattell advises that the centerlines of the press, bolster, feed, straightener, and reel might not be in line and the coil material guide settings might not be correct.

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Ask the Stamping Expert: How can we form holes smaller than the material thickness?

May 31, 2016 | By Thomas Vacca

Q: We are using a progressive die to make a part that is 3.770 inch in diameter with 45 holes, each 0.172 in. in dimeter, on a 3.514-in. bcd [basic center diameter]. Our customer has asked us to change the material from 0.080-in. half-hard copper to 0.240-in. half-hard copper. Now the hole is...

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Ask the Stamping Expert: How can I avoid die crashes?

May 31, 2016 | By Dennis Cattell

Q: I am a die setter and press operator who works with progressive dies that run up to 120 SPM. For die and press protection, we have: Strip material location with pilots. Pilot protection with limit switches. Four double-material-thickness stripper sensors in case of slug pull-up. Sensor on...

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Ask the Stamping Expert: How can I prevent slivers in blanking operations?

May 27, 2016 | By Thomas Vacca

Q: We are making shallow drawn cuts from 0.007-inch-thick aluminum base material with a thin polymer coating. The cups are assorted sizes from 0.375 to 0.75 in. and equal depths. We pierce the blank and use a balentine to carry it in the strip web through the draw operations, and finally we...

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Optimizing hydraulic presses for deep drawing

May 25, 2016 | By Greenerd Press & Machine Co.

Optimizing a hydraulic press requires choosing the best press frame, hydraulic circuit, auxiliary function, electrical controls, and hmi for your deep drawing application and parts drawn.

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Lockset manufacturer gets handle on scrap to boost productivity

May 25, 2016 | By Kate Bachman

When you stamp 2.2 million pieces a day in the manufacture of lockset and doorset assemblies— 550 million stampings a year—smooth, speedy operation is your goal and bottlenecks and obstructions to productivity are your targets. Kwikset developed a unique way to handle scrap that removed a bottleneck and increased output.

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Making metal forming math more meaningful

April 25, 2016 | By Bill Frahm

In the world of metal forming, relying on assumptions can lead to expensive disasters. That’s why activities such as die tryout need to be based on solid math. The results of these mathematical efforts then need to be shared in a language that decision-makers can understand.

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Ask the Stamping Expert: Do die repairs require full lockout/tagout?

April 18, 2016 | By Dennis Cattell

Editor’s Note: Regular readers of this column might recognize that Mr. Cattell answered a similar question in the May/June 2010 issue of STAMPING Journal®. Since this question reflects a common concern among stampers—and is asked of Mr. Cattell quite frequently in his work—we felt it would be beneficial to address the issue again.

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Ask the Stamping Expert: How can I form titanium successfully?

April 15, 2016 | By Thomas Vacca

Q: We are getting more and more inquiries for components made of titanium. We have never worked with this material. Any advice? A: Titanium can be cold- or hot-formed on standard equipment using techniques similar to those used on stainless steels, but you need to consider two main issues: The...

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Ask the Stamping Expert: How can I get a die to run in two different presses?

April 11, 2016 | By Dennis Cattell

Q: When I move a die from one press to another, the die runs fine in the first press but will not run in the second press. The presses are the same size, stroke, and speed range, although one is a few years older than the other. What can I do to ensure the die runs in both presses. A: There are...

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Ask the Stamping Expert: Is there a check list for setting progressive dies?

April 1, 2016 | By Dennis Cattell

Q: We are new to die setting. Do you have a check list that could help us with different progressive dies? Can you recommend any literature on the subject? A: First, I do not know of any comprehensive literature. Most literature tends to focus on an individual subject rather than cover the overall...

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Ask the Stamping Expert: How can we achieve fast punch changeout halfway through a run?

April 1, 2016 | By Thomas Vacca

Q: I’m a diemaker for a Detroit Three automaker. We have a job on which we have to change punches halfway through the run. Changing the punches is a lengthy operation and involves quite a bit of downtime. Does anyone in the industry make an automatic or semiautomatic punch removal system that we...

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Ask the Stamping Expert: How can I reduce snap-through condition effects?

March 31, 2016 | By Dennis Cattell

In the May/June 2012 “Ask the Expert” column, you discussed the causes of the large vibrational energy wave that must be dissipated by the press structure beyond the shear loads. Is there any way to reduce the vibration? A: Many lamination and blanking dies incorporate moveable stripper...

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Ask the Stamping Expert: Why do press and die problems occur at lower-than-capacity press speeds?

March 31, 2016 | By Dennis Cattell

Q: To improve efficiency and reduce cost in our newly acquired high-speed blanking operation, we have increased press speeds from 225 SPM to 450 SPM. After several successful months, we are experiencing a high number of new press and die problems. The presses are capable of speeds higher than 500...

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