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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Die Science: Setting up progressive dies - Part I

October 3, 2006 | By Art Hedrick

Editor's Note: "Setting Up Progressive Dies" is a two-part article. Part I discusses press and die cleanness, die alignment, clamping procedures, and preliminary shut height calibration. Part II discusses the process for getting metal into the die, setting the pitch, feed release, and other factors...

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Holding the line on metal costs

September 12, 2006 | By Ken Shoop

Stampers and roll formers can look at edge trim, heads, tails, skeletons, and coil damage for ways they can reduce scrap to hold the line on metal costs.

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Draw forming, Part IV

September 12, 2006 | By Edmund Herman

The relationships among part geometry, tool geometry, and control of the processing inputs are significantly different between the net shape and non-net shape processes.

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Doing its level best

September 12, 2006

A precision roller leveler, installed between the coil payoff reel and the press equipment, allows an operator to stretch the edges when necessary to compensate for loose centers or stretch the center to compensate for loose edges before the blanking operation.

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Draw forming, Part III

August 8, 2006 | By Edmund Herman

The connections between product conditions and product input variables for draw forming must be made through the intermediary transformation characteristics: plastic strains and displacements. So all product requirements must be redefined as the changes (or transformations) required of those two characteristics.

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Die Science: Unique forming short cuts

August 8, 2006 | By Art Hedrick

Die designers often are faced with how to make a part feature that is unique and possibly difficut to form. Short cuts are discussed for twisting a part, creating a return flange, and making a 90-degree bend.

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Meeting global challenges through employee rewards

August 8, 2006 | By A.A. Imberman

Arco Industries Inc. bought a 15-year-old, 500-ton Tranemo hydraulic punching press with an antiquated control system. For about one-quarter the cost of a new press, Arco was able to rejuvenate an obsolete press by providing it with contemporary levels of control and productivity.

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Die basics 101 starts with eight basic components

August 8, 2006 | By Art Hedrick

A stamping die is a special, one-of-a-kind precision tool that cuts and forms sheet metal into a desired shape or profile. Most dies are constructed of several basic components, including die plates, shoes, die sets, guide pins, bushings, heel blocks, heel plates, screws, dowels, and keys. Dies also need stripper, pressure, and drawing pads, as well as the devices used to secure them—spools, shoulder bolts, keepers, and retainers; and gas, coil, or urethane springs.

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Feed to registration

August 8, 2006

For applications such as clutch disks, oil seals, oil filters, and other round stampings, feed to registration with scroll-slit material can reduce scrap rates and, in some cases eliminate the need to retool the job.

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Getting hydraulic press problems under control

August 8, 2006

Arco Industries Inc. bought a 15-year-old, 500-ton Tranemo hydraulic punching press with an antiquated control system. For about one-quarter the cost of a new press, Arco was able to rejuvenate an obsolete press by providing it with contemporary levels of control and productivity.

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Die Basics 101: Part IX

August 8, 2006 | By Art Hedrick

Part VIII of this series discussed some of the specific mechanical properties of metals—ductility, elongation percentage, tensile and yield strength, and hardness—and how to derive these properties. This article describes other important mechanical properties, as well as a few behavioral...

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Die Science: The process of fineblanking

July 11, 2006 | By Art Hedrick

Fineblanking can achieve flatness and cut edge characteristics that are unobtainable by conventional stamping and punching methods. Fineblanking is described in relation to conventional methods to encourage a better understanding of its benefits and limitations.

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The modern mechanical press

July 11, 2006 | By Dennis Boerger

End-user demands for new product configurations, materials, and press capabilities continue to have an impact on the metal forming arena. Mechanical press design improvements and flexibility are keeping up with stampers' changing applications.

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21st century stamping material specifications

July 11, 2006 | By Edmund Herman

Advanced technology in the metal stamping industry has rendered obsolete traditional methods of selecting, specifying, and supplying material. Using modern technology to quantify materials can reduce the occurrence of material variation exceeding the die and process capabilities and make die development a much more efficient process.

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Draw forming, Part II

June 16, 2006 | By Edmund Herman

In draw forming, measurement and quantification are essential to ensuring part quality for the customer. However, the product requirements and the product input variables have different metrics and different conceptual meanings, which seems to defy direct engineering. Three processing variables can be adjusted during production to ensure the part is formed correctly.

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