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.
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.
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.
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.
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.
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.
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.
June 13, 2006 | By Dean C. Phillips
To compete in a global market, all stampers need adapt their manufacturing processes. By mixing automation with electronic controls, job shops can increase output and exceed past manufacturing goals.
June 13, 2006 | By Yingjie Xu
Self-piercing riviting, an alternative sheet joining method, is being used more to join aluminum sheets. The finite element method can be employed to study the SPR process and joints, perhaps even leading to the elimination of physical testing of these mechanical joints.
June 13, 2006 | By Art Hedrick
Figure 1 Part VII of this series introduced two basic types of metals used to manufacture stamped parts—ferrous, metals that contain iron, and nonferrous, metals that do not contain iron. This article discusses the specific mechanical properties of these metals in more detail.The metal's...
June 13, 2006 | By Art Hedrick
In any stamping process including progressive dies, transfer dies, or line dies, three factors are essential to consider when processing a piece of flat metal into a finished part: What is the metal? What is the metal's thickness? What are the part tolerances?
June 13, 2006
In recent studies, dry-film lubricants have been shown to give better lubrication conditions compared to oil-based liquid lubricants. This factor, as well as savings in the amount of lubricant used, has helped increase the use of dry-film lubricants in the automotive industry for forming of aluminum and high-strength steel stamped parts.
June 13, 2006
The ironing test developed at the ERC/NSM reproduces production conditions of contact pressure up to 94 kilopounds per square inch (KSI) and temperatures up to 300 degrees F to quantitatively evaluate lubricant performance.
May 15, 2006 | By Stephanie Vaughan
Like the molds he repairs, Five Star Tool Welding owner Joe Canfield finds that the welding equipment he uses at his company is getting smaller and smaller. Over the years GTAW equipment has evolved to better meet the needs of its tool and die welding users.
May 9, 2006 | By Dan Davis
In 2005 precision stamper Weiss-Aug of East Hanover, N.J., achieved a reject rate of less than 1 part per million. The company credits the success to meticulous planning and almost flawless execution. Such an approach applies for Weiss-Aug even when it comes to uncoiling metal.