Content tagged with "springback"
Results: 13
Article
April 14, 2009
Article
April 15, 2008
Improve HSS part quality before die tryout
This C-pillar reinforcement is manufactured by deep drawing, cutting, and flanging (on left). Die faces for the deep-drawing stage, including the binder, addendum, filled surfaces, and part, can be developed using simulation software (on right). The use of high-strength steels (HSS) and... Read more...
Article
January 15, 2008
2 strategies for optimizing bending operations
Offline bending software expedites the bending process. Metal fabricators must continuously seek new ways to maximize their uptime and improve their staff utilization to combat the skilled worker shortage. Fabricators typically encounter bottlenecks during setup and production in their press... Read more...
Article
September 11, 2007
Clearing the springback hurdle
Editor's Note: This article is adapted from Eric Kam's conference presented at FABTECH® International & AWS Welding Show, Oct. 31-Nov. 2, Atlanta,© 2006 by the Fabricators & Manufacturers Association Intl. (FMA). Of all the technical problems that hinder stampers today, springback... Read more...
Article
August 8, 2006
Die Basics 101: Part IX
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... Read more...
Article
September 13, 2005
Introduction to advanced high-strength steels
Part I of this two-part series presented an overview of advanced high-strength steels (AHSS). This article addresses issues encountered when processing these grades. Using AHSS in appropriate applications offers opportunities for reduced product weight, enhanced crash performance,... Read more...
Article
September 13, 2005
Introduction to advanced high-strength steels - Part II
Part I of this two-part series presented an overview of advanced high-strength steels (AHSS). This article addresses issues encountered when processing these grades.
Using AHSS in appropriate applications offers opportunities for reduced product weight, enhanced crash performance,... Read more...
Article
September 13, 2005
Bend allowance and springback in air bending
Figure 1 In air bending, a sheet is placed in the die, and the press ram descends and bends the sheet into a V shape. Figure 2 Bend allowance (also known as bend deduction) can be used to predict the initial flat length of the sheet. Source: O. Diegel, "Bend Works: The Fine... Read more...
Article
August 9, 2005
Oversized V dies: the effects on bottom bending
Figure 1
Why are so many press brake and tooling manufacturers adamant that you cannot bottom-bend with their products?
One word: Liability!
It's so easy to upset* a ram or blow tooling if bottom bending is done incorrectly. So who can blame the manufacturer for... Read more...
Article
March 13, 2003
Die designs for wide bends
Another design challenge is the thin-material, precision progressive die for achieving consistent bends of more than 90 degrees. These dies have material less than 0.020 inch thick and can achieve a tolerance of ±1 or 2 degrees for an angle on the final part. Any tool in any shop is... Read more...
Article
July 11, 2002
Can I form a box that deep?
Figure 1
One of the more common questions asked in day-to-day press brake operations is "Can I form a box that deep?"
If you select the wrong tool, the side of the box will crash into the ram. This can produce the wrong bend angle or prevent the forming of tight corners. In most... Read more...
Article
September 17, 2001
Fighting springback in profound radius bends
Figure 1:
With a profound-radius bend, springback increases dramatically.
Under normal press brake bending conditions, an inside bend radius that falls between 63 percent of the material thickness and 10 times the material thickness is defined as a radius... Read more...
Article
May 15, 2001
Know your bending basics—Part I
Editor's Note: This article is Part I of a two-part series discussing bending. Read Part II .
Of all of the operations that typically are done in a stamping die, it seems that achieving and maintaining a 90-degree bend are two of the most difficult.
To accomplish these tasks... Read more...
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