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High-tech presses

November 20, 2003 | By Dennis Boerger

Figure 1Complex drive systemStampers are looking to achieve higher productivity, better component quality, longer die life, and increased flexibility. While these capabilities are essential to maintaining an edge in today's competitive environment, they come at a price. New technology now offers...

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Investing in lubricants

October 9, 2003 | By Brad Jeffery

All businesses tied to the metal forming industry are scrambling to find areas in which they can lower costs without sacrificing quality. Adding to this burden are a tight cash flow and a lack of financial resources to invest in process improvement equipment. Therefore, the savings must come from doing more with less.

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R&D Update: Predicting springback in air bending, straight flanging

October 9, 2003 | By Taylan Altan, Ph.D.

Editor's Note: This column was prepared by the staff of the Engineering Research Center for Net Shape Manufacturing (ERC/ NSM), The Ohio State University, Professor Taylan Altan, director.Air bending and straight flanging are the most prevalent types of bending in sheet metal forming. Predicting...

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Controlling bend angles

October 9, 2003 | By Art Hedrick

Bend angles are among the most frustrating geometric features to control in metal stamping. This is due primarily to two factors – the inconsistency of the mechanical properties in the metal being bent and the die design.

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Hydraulic presses make their mark

September 25, 2003 | By Lincoln Brunner

Just like hydraulics technology itself, the market for presses based on it is fluid and dynamic. And for the first time in a while, the tide may be turning in favor of its practitioners.As many manufacturers report prosperity and strong prospects for it in the near future, the hydraulic press...

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Choosing the proper steel to minimize abrasive adhesive tool wear

September 25, 2003 | By Thomas Hillskog

The most disruptive type of failure in any tooling application is when the tool cracks. To prevent this type of failure in cold-work applications, it's important to select the correct steel.

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Stamping 101

September 25, 2003 | By Daniel Kiraly

To promote real-world stamping training, the Tooling & Manufacturing Association (TMA) wanted to create a resource whereby stampers could receive a consistent, recognized, hands-on education on the industry's most current equipment.

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R&D Update: Using binder force control, force modulation, to improve part quality, stamping efficiency

August 28, 2003 | By Taylan Altan, Ph.D.

Editor's Note: This column was prepared by the staff of the Engineering Research Center for Net Shape Manufacturing (ERC/ NSM), The Ohio State University, Professor Taylan Altan, director.Binder, or blank holder, force control is an important variable in the stamping process. Constant blank holder...

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Die geometry for embossing and stretching

August 28, 2003 | By Art Hedrick

Stretching or embossing, not to be confused with drawing, is the process in which the part's geometry is obtained by stretching the metal into a forming cavity.

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Protecting surface-sensitive materials in coil processing

August 28, 2003 | By Jim Russell

As manufacturers worldwide strive to reduce costs and streamline their production processes, the market for surface-sensitive materials continues to expand. Surface-sensitive materials include all prepainted steel products and nonferrous decorative materials, such as copper, brass, and stainless steel.

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Virtual tryout

August 14, 2003 | By Terry Swan

In this era of global warp speed and virtual reality, calculating the deep draws of progressive dies or the springback of metal is performed by simulation software instead of the earlier trial-and-error method. These software programs essentially replace the artistic methods of diemaking with...

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What's driving your press?

August 14, 2003 | By Errol Neider

Mechanical presses are challenged to provide high-speed production with a greater number of hits per minute, smaller batch runs, and quicker die changes.

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Stamping out bad parts

August 14, 2003 | By Tim Schmidt

Sheet metal manufacturers are under constant pressure to improve and document quality while reducing costs. Furthermore, original equipment manufacturers are shifting responsibility for quality inspections to suppliers, adding extra burdens. New, complex product designs and rigorous processes, such as deep drawing and the growing use of exotic materials, are placing greater demands on both quality assurance and development departments.

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Toolmaker tricks

August 14, 2003 | By Art Hedrick

It is not unusual for me to perform a few magic tricks when holding a conference on stamping die drawing, troubleshooting, or processing. Later on, I may disclose the magicbehind the trick. I do this for a couple of reasons: first, to entertain the conference attendees, and second, to show them that there is no such thing as magic, only physics.

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Maximizing a coil fed press

July 24, 2003 | By Ted Sberna

Coil-fed stamping presses are nothing new, but coil feeding processes have changed a lot since the days when press feeders were driven mechanically by crank motion. Influencing these processes are differences between transfer and progressive tooling.

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