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Pitch notch or not? Factors to consider when designing progressive dies

April 6, 2004 | By Art Hedrick

Figure 1In today's competitive global market, stampers are looking for ways to reduce tooling and stamping cost by any means possible. Pitch notches, often referred to as French notches, are used commonly to prevent overfeeding and mis-hits in progressive dies. More often than not, however, using a...

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Venturing Into the World of 3-D Die Design

March 11, 2004 | By Robert W. Harper

2-D, or not 2-D; that is the question. Whether 'tis nobler to venture out into a brisk, bold, new world of 3-D or to stick with old, reliable methods in 2-D.

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New Features in Coil-to-Coil Slitters

March 11, 2004 | By Chuck Damore

Years ago it was customary for coil processors to have dedicated slitting lines for specific materials and gauges. Today's larger, stronger, and thinner-gauge coils, however, require service centers to be able to process many materials and gauges on the same machine.

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Building a better beast

March 1, 2004 | By Heinz Becker

Demands on stampers are similar to those on every component manufacturer these days: Make it right and progressively cheaper year after year. Older press technology may not be able to provide the speed, throughput, die life, and uptime required to reduce production costs. As a result of research...

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Gaining from friction and formability data

February 12, 2004 | By Brad Jeffery

As steel prices rise and offshore competition increases daily, steel and overhead optimization are driving U.S. metal stamping and forming companies. Companies that survive and thrive are taking a different approach to managing change and cost and are discovering savings in areas never seriously considered before.

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Selecting a stamping die pressure system, Part II

February 12, 2004 | By Art Hedrick

Selecting a stamping die's pressure system can be a critical decision. Many questions must be answered to determine what type of pressure system best suits your application. This article is Part II of a two-part series that focuses on the different systems available, as well as the advantages and...

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Appliancemaker reduces downtime with stamping press feed system

January 13, 2004 | By Kate Bachman

The Whirlpool Co. builds refrigerators at its facility in Fort Smith, Ark. The company stamps the appliance parts—large and small, galvanized, cold-rolled, and aluminum—on approximately 35 presses. The majority of its stamping presses are straight-side machines, although some are open-back inclinable (OBI), and a few are hydraulic.

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Rolling bolsters bolster productivity

January 13, 2004 | By Said Lounis

To thrive and experience growth and healthy profits, a stamping company must have systems in place that allow flexible manufacturing and minimize press downtime. Changing from one job to the next in the least amount of time possible is one of the primary factors impacting productivity and a company's ability to adjust to the changing needs of customers quickly and efficiently.

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Filling in the blanks

December 11, 2003 | By Gary Johnson

 Because of sluggish economies and uncertain markets, the need to hone a competitive edge is more sharply defined. Many stampers are doing this by taking control of their material inventory and production schedules by adding a cut-to-length blank shearing line.An in-house blank shearing line...

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Finding and creating value in your stamping operation

December 11, 2003 | By Frank G. Rubury

A different breed of competitor has emerged recently in the stamping industry to challenge traditional thinking. These competitors are companies that focus on time as a basic measurement, giving them the advantages of flexibility, innovation, responsiveness, and low costs. They know how to make money in stamping operations and take business away from less astute competitors.

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Selecting a stamping die pressure system, Part I

December 11, 2003 | By Art Hedrick

This article is part one of a two-part series that focuses on the different stamping die pressure systems available, as well as the advantages and disadvantages of each. The article also discusses some of the controlling factors that contribute to system selection.

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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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