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 prevent slivers in blanking operations?

May 27, 2016

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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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Ask the Stamping Expert: Do we really need die safety blocks for die setting?

May 27, 2016

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Dennis Cattell answers this question with a resounding "Yes!"

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Optimizing hydraulic presses for deep drawing

May 25, 2016

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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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Ask the Stamping Expert: Can I pierce material in a progressive die in the opposite direction?

March 31, 2016

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Q: Do you have much experience with piercing material in the opposite direction than usual in a progressive die? In other words, the slug goes through the punch shoe. A: Yes. This is very doable and not uncommon. I assume you need to do this because the piercing direction is a part-functional...

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Ask the Stamping Expert: How do I hold washers in the strip in a compound die?

March 30, 2016

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Q: Do you have suggestions for holding washers in the strip in a compound die? High-strength, low-alloy material properties change from heat to heat, periodically causing parts to drop out of the strip. For this reason, we blank up and use a knockout bar to eject the parts. A: Two significant...

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What’s sizzling in hot stamping?

March 28, 2016

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This multisource article touches hot stamping's growth and new technologies and approaches to its further development, including pressure controlled hardening, hot forming of aluminum and magnesium, the option of using a servo-mechanical press that has been modified for hot forming as well as a hydraulic press, and secondary processing performed in-die to avoid having to use a laser cutting machine for trimming.

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