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: What do the various press styles have to offer?

March 11, 2016

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Q: I am having a problem stamping a shallow drawn cup about 0.75 in. deep from 0.045-in. 304 half-hard stainless steel. I’m using a mechanical press. What do other press technologies have to offer? A: Years ago I wrote a brief on the major differences between mechanical and hydraulic presses....

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Ask the Stamping Expert: The 10 Tooling Laws explained

March 11, 2016

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Q: In your last column you listed the 10 Tooling Laws. I had never seen these before. Can you please explain each law in more detail? A: I drafted these laws years ago out of necessity. After more than 35 years of experience in the stamping field - - many as a master toolmaker, then as a...

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Ask the Stamping Expert: When is a WEDM purchase justifiable?

March 11, 2016

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A stamper is getting pressure from customers to add WEDM to reduce costs. Thomas Vacca advises him on how to justify the purchase.

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Ask the Stamping Expert: How can we maximize our tooling’s hits per service?

March 10, 2016

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Q: We are running high-strength, low-alloy (HSLA) brackets for a large aerospace firm. We cannot get the hits per service we need from our tooling and are struggling to meet production requirements. Any advice? A: Regardless of how many hits per service you get off a tool, you always want to...

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Ask the Stamping Expert: Why does tooling fail during coining and forming operations?

March 10, 2016

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Q: In our stamping division, we do a lot of coining and forming of 300 and 400 series stainless steels from 0.030 to 0.090 in. thick. We coin up to a 30 percent reduction in thickness and form multiple bends with very tight radii. Our punches and form die inserts fail. They break, crack, chip, or...

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Ask the Stamping Expert: How do I calculate shear pressure when figuring stamping die tonnage?

March 9, 2016

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Q: I read the article “How can I reduce snap-through condition effects?” in the September/October 2012 STAMPING Journal®. If I understand the article correctly, you do not want to stagger the punches too much to prevent the stored energy from releasing before the next set of punches hit. If...

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R&D Update: Lightweighting in the automotive industry using sheet metal forming, Part 2

March 9, 2016

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Editor’s Note: Part I of this article appeared in the January/February 2016 issue.

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Ask the Stamping Expert: Why does my tooling yield such big variation?

March 9, 2016

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Q: My company stamps right-side and left-side links for conveyor belts. The peanut-shaped parts, made in a changeover tool, are about 0.1 in. thick, 1.5 in. wide, and 3 in. long. Half of the part (lengthwise) is coined offset, one material thickness in depth. This is in addition to a number of...

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Ask the Stamping Expert: What's the best-in-class process for developing a progressive-stamping die?

March 8, 2016

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Q: What is the best-in-class process for developing a new progressive-stamping die? A: Many tool builders think the process of progressive-die development is undefined and difficult to predict, and therefore takes way too long. Development is costly. It ties up engineering, design, toolroom...

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Ask the Stamping Expert: What type of hydraulic clamps are best for quick-change setups?

March 8, 2016

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Q: What type of hydraulic clamps do you use in your stamping presses for quick-change setups? A: The type of clamp is insignificant; there are many suitable brands. How you use the clamp is the important thing. Before you get into a true lean die-change system, you need to do some homework....

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Die Science: Understanding deep-drawing and stretching variables for best results

March 4, 2016

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Numerous variables affect the success of a deep-drawing or stretching process. Some are major and some minor, but you’ll need to take all into consideration when designing, building, and troubleshooting a drawing or stretching operation. Sheet and Coil Material Material is a major...

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Improving metal forming performance

February 18, 2016

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What does your stamping operation do to improve metal forming efficiency? The key is to learn more about the metal, conduct practice runs in the virtual world, and pass along knowledge to co-workers.

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Modern hydraulics: Six advanced capabilities for stamping presses

February 2, 2016

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Advanced hydraulics and intelligent drive systems are now available to provide greater metal forming precision and to improve stamping press productivity and product quality.

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At WITS end with wrinkles, tears, springback in AHSS?

January 26, 2016

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: Stamping AHSS comes with forming challenges such as wrinkling, tearing, and springback. A servo’s controlled force can help resolve some of those problems—and keep you from tearing your hair out.

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FABTECH flashback

January 21, 2016

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With the boisterous holidays and end-of-the-year cinematic wave behind us and a long stretch of quiet winter still ahead, you could not be faulted for pining for the fun, clamor, and intrigue of FABTECH® 2015 only a few short months ago. “Star Wars” has nothing on the special effects, precise automation, heavy metal, whirring bots, and heart-pounding thrills there. Here is a flashback.

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