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Die Science: Bridge strippers versus spring strippers

March 6, 2017 | By Art Hedrick

A recent consultation job reminded me of the importance of selecting the best method for stripping cutting punches. It’s not that I haven’t seen similar problems in the past; rather it’s the simple fact that using the wrong type of stripper can result in catastrophic tool failure, as well as...

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Die Science: Understanding interactivity for difficult stampings

February 28, 2017 | By Art Hedrick

It’s no secret that the quality of a stamped part is influenced by numerous variables, including the mechanical ability of the material being stamped, the condition of the tooling and the press, the number of process steps being used, and the geometry of the dies. To truly solve a...

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Die Science: Thinking like sheet metal

February 28, 2017 | By Art Hedrick

If you have ever attended one of my public or custom on-site training courses, you’ve heard me emphasize the importance of understanding your sheet metal’s behavior before you try to cut or form it. Chances are that sometime during the course, I said, “You must think like the sheet metal or...

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Die Science: Diemaker or dieologist?

February 28, 2017 | By Art Hedrick

If you have ever attended one of my technical seminars, you know that I often use the word dieologist. Don’t waste any time trying to find it on the Internet, because you probably won’t. It’s a word that I made up and frequently use to define a diemaker who uses his or her knowledge of sheet...

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Die Science: The basics of servo-drive presses

February 28, 2017 | By Art Hedrick

As materials change and the competition gets tougher, metal stampers must invest in technology that helps them to remain competitive. In stamping, efficiency is everything. Stampers must produce higher-quality parts in shorter cycle times using materials that often have poor formability. This is an...

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Die Science: What really makes a press shop work?

February 24, 2017 | By Art Hedrick

As stampers, we often believe that purchasing new machines and investing in new technology are key to remaining competitive in the global market. Although keeping up with the latest equipment and techniques is very important, it’s not the only answer for having a successful stamping company....

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Die Science: Opportunity knocks

February 24, 2017 | By Art Hedrick

When you think of the tool and die industry, you often think first of tool- and diemakers—people grinding die sections, reading engineered drawings, assembling dies, and trying out tooling. Although tool- and diemakers are critical to the diemaking process, many jobs are equally important to the...

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Die Science: The influence of product design

February 24, 2017 | By Art Hedrick

I find it somewhat disheartening how often product designers fail to see the downstream effect of the decisions they make regarding the design of a stamped product. Poor tolerencing and part feature decisions cost the stampers and die builders any profit they may have realized. While I don’t want...

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Die Science: Die costing and estimating

February 24, 2017 | By Art Hedrick

One of the common complaints I hear from stampers is that tooling cost estimates differ significantly when they are requesting quotes. One would think that if every shop were quoting to the same die design standards, the tooling cost would be similar from each shop quoting, but that’s not the...

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Auto stamper gets two coil feed lines for the size of one

February 23, 2017 | By Kate Bachman

The Adient Co., automotive seating, stamping, and assembly plant in Athens, TN was struggling with material damage and accuracy feeding thin material handling on its current compact feed system. It resolved the problems by installing two compact Dallas LoopSelect SpaceSaver™ dual loop/feed systems that allow it to run very thin materials in the front loop, and then switch to a back loop for thick materials.

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Achieving successful stamping of AHSS

January 16, 2017 | By Daniel J. Schaeffler

Forming products from advanced high-strength steels is a challenge. Understanding how these materials react during press feeding, straightening, blanking, and forming is necessary in designing production processes that run as efficiently as possible.

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R&D Update: Predicting springback when bending AHSS and aluminum alloys, Part II

January 12, 2017 | By Aanandita Katre, Ali Fallahiarezoodar, Taylan Altan, Ph.D.

Editor’s Note: This article is Part II of a two-part series. Part I, which appeared in the November/December 2016 issue, discussed the challenges of determining Young’s modulus, one of the most important parameters for springback prediction.

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Die Science: What makes a topnotch metal stamping plant?

January 11, 2017 | By Art Hedrick

Some stamping plants and die-building facilities are far more productive and efficient than others. Each shop typically has its own niche, as well as its own strengths and weaknesses. So what are the key decisions managers make that result in a successful stamping or die-building shop? Staffing...

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Ask the Expert: How do we fix our slug pulling problem?

January 11, 2017 | By Thomas Vacca

Q: We are developing what we thought would be a fairly straightforward stamping. We are blanking a rectangular shape, 2.15 by 2.35 inches and 0.004 in. thick, from 301 stainless steel. A simple, single punch blanks the part through the die chase in one shot. But as we brought up the stamping speed...

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Using key performance indicators to measure progress

January 4, 2017 | By Bill Frahm

To improve a process, you need to measure the results and compare them against expectations. In many instances, a metal former needs to define key performance indicators and keep track of them to determine just how its shop is performing.

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