October 28, 2015 | By Steve Benson
Radius bends—defined here as any bend with an inside radius greater than 125 percent of the material thickness—require careful calculation, not only because of their significant springback, but also because of the tooling these bends require. This includes the use of relieved dies.
October 12, 2015 | By Gunter Glocker
Improved tool storage at the press brake, easier tool identification, fast tool loading/unloading (including heavy tools), and proper positioning of tooling in the press brake can make life easier for any press brake operator--experienced or not.
October 7, 2015 | By Scott Ottens
Automated bending technology has changed significantly in recent years. Knowing which works best for your operation starts with a simple question: Why do you want to automate?
September 8, 2015 | By Steve Benson
Press brake guru Steve Benson proposes a new theory of bending, altering some long-held labels and definitions and introducing new formulas. Those long-held definitions worked well, but these new definitions and formulas may help a press brake technician become even more accurate in predicting how a part will form.
August 12, 2015 | By Steve Benson
You can use some common rules of thumb to predict the inside bend radius when air forming, and the results you get are usually close enough, but with the help of a few online calculators, you can get even closer.
August 4, 2015 | By Dan Davis
The Minneapolis manufacturing facility for Unison Comfort Technologies was being stretched to the limits trying to keep up with orders for its HVAC products. New fabricating technology was seen as the only way to meet current production needs and add capacity, but the company needed a new approach to its part flow as well if it were to make the most of any reshuffling of the shop floor.
July 27, 2015 | By Tim Heston
At S&B Machine in Mobile, Ala., Head Programmer Danny Brown streamlines bending by making sure the right operators have the right information at the right time.
July 21, 2015 | By Steve Benson
Using the 20 percent rule works well when calculating the floated radius in an air form, but what about the radius at different bend angles? To calculate this, we start with geometry to find the arc length and radius at different bend angles. We then manipulate these results by factoring in real-world bending conditions.
With the right tooling, you can accomplish horizontal bending—that is, where the sheet remains horizontal during the bend cycle—on the press brake. In general, horizontal bending on the press brake is accomplished with either wiping tools or rotary-style tools.
June 29, 2015 | By Steve Benson
Air bending soft aluminum has such a low tensile strength that it doesn't take much for a narrow punch tip to penetrate the surface and turn the bend sharp.
June 25, 2015 | By Dan Davis
Wisconsin Metal Parts Inc., Waukesha, Wis., has grown its metal fabricating business very aggressively in recent years. The latest machine tool technology has helped, but its employees have made it stay in control and on course.
June 1, 2015 | By Tim Heston
Bump bending remains more art than science, especially for large and thick workpieces, but using the right tools and setup procedures help make this challenging brake operation much more efficient.
May 11, 2015 | By Eric Lundin
Sheet metal worker Paul Ziegman puts in long days building stainless steel kitchen equipment for restaurants and other food-service businesses in and around Spokane, Wash. He recently opened his own such business using the same equipment and skill set.
May 3, 2015 | By Steve Benson
To ensure you always work within the tonnage limits of your press brake and tooling, first calculate how much tonnage you need. Second, identify your tooling’s load limits. Third, calculate the sinking tonnage limit, which, if exceeded, can embed tooling into the ram or bed. Fourth, determine your press brakes’ centerline load limit.
April 30, 2015 | By Steve Benson
Why do air bends in cold-rolled steel turn sharp at an inside radius that’s about 63 percent the material thickness? It has to do with the relationship between forming forces and a material’s tensile and yield strength.