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Trends in Stamping Progress

 Ellen Kehoe

 

 

 

 

 

 

 

By Ellen Kehoe
Senior Editor

Papers exploring the current state and future trends in a particular technology are perennially popular. Too, rediscovering such papers a few years later provides a timeline of the topic’s evolution. Such is the case with several papers on stamping, among the 95 related to this fabrication process in the SME Technical Paper library.

Just as pertinent today as when identified in 1977 by author Jack Gilchrist are some forces influencing the stamping industry (and, indeed, any industry). He cited social responsibility—ensuring worker safety through press controls, press guarding and noise reduction; energy conservation—addressing the challenges of dealing with unfamiliar materials; and economic inflation—keeping red ink at bay in tough times by watching out for excessive waste.

The author summarized the state of the art then with the same words as we could use today: “We are learning now as never before how metal reacts to the stresses that we put it through in the stamping process and … to predict the patterns of deformation that a stamping takes. Knowledge currently being gained will open the door to scientific development of tools and stamping processes that will allow us to meet the challenges of future product design….”

 

Dies and Dollars

“Insurance against major smash-ups”—what a great idea!—is one of the benefits of die protection, an innovation listed in a paper on advanced stamping methods. “Protecting dies can be simple and inexpensive and all types of dies can be protected. There exists today a satisfactory safeguard for progressive, compound, combination, cutoff, transfer and whatever type of die you may have.” Other developments highlighted are compound die design, progressive die methods and improved hand feeding operations.

New approaches to high-speed metal stamping are discussed by an author from Minster Machine Co. (Minster, OH), emphasizing how to maximize the net profit per machine with the assistance of an equipment supplier who understands all the components required for optimum speed. Another paper focuses on the difficult metal stamping economics task of predicting the actual cost of making parts with properly designed tools and suitable equipment—and therefore establishing an acceptable selling price.

Stamping dies. Credit: i855.photobucket.com

 

Materials and Troubleshooting

A number of papers deal with materials issues and pressroom problems. While one may be tempted to feel that, due to their sizes, metal stamping presses will not get damaged, “this is a false promise,” states one author in detailing a practical maintenance and inspection program to save both money and expensive downtime.

Successfully handling materials issues and forming problems makes all the difference in meeting customer requirements. Problems with materials can be surface defects—e.g., roughness, mill marks, rolled-in scale, corrugations—or internal defects, often noticed after forming, including blast pull-through, ghost lines, inclusions, galling and pickup. Attention to blankholder development, lubrication and forming limits is critical.

 

SME Technical Papers

More than 16,000 papers and presentations make SME’s collection of manufacturing knowledge the largest of its kind. Find papers on best practices, advancements and industry trends. Add your insights to help others Learn More & Do More.



Published Date : 1/12/2015

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