Bending

The bending technology area includes all manner of machines and processes for bending sheet metal, including press brakes, folders, panel benders, corner formers, ironworkers, notchers, orbital formers, and roll benders. It also has information on accessories such as gauging and backgauging systems.

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Learning lessons from the past

February 14, 2002

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For several years my work as a press brake consultant has taken me into many different fabricating shops. My job is to seek out problems and try to find solutions that make press brakes more productive. I have encountered many different situations, and I thought perhaps sharing some of the problems...

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Press Brakes and (much) More

January 31, 2002

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The flow of product through you shop is a key issue in determining your prosperity as a business. Drawing a little insight from the Chinese concept of feng shui might help you achieve the kind of flow you're looking for.

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Mobilizing equipment-saving time and talent

November 29, 2001

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It's hard to believe that machines such as press brakes and hardware-setting equipment can move around on wheels or be moved by forklift and still function correctly. But I can tell you from experience that it is true and can be done.

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Adaptive bending

November 15, 2001

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Adaptive bending allows press brake operators to measure a bend angle during the forming process and feed the information to the numerical control. The article discusses springback and how to determine it and the fact that when air bending, 90 percent of problems result during initial setup, and only 10 percent result from springback. It also discusses using an angle control system, methods of measuring angles, and requirements for angle measurement systems.

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Design tips for sheet metal: Bend relief, small holes, hole distortion near bends, and minimum flange widths

October 25, 2001

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The article discusses making small holes and when to use a punch or laser cutter, inside radius measurements and how they differ depending on whether you are coining or air bending on a press brake, and adding bend relief to prevent tearing material.

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The Brakes: Press Brakes and You -- Whose business is safety? Everybody's

October 11, 2001

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What sort of safety measures needed in your shop depends somewhat on your equipment, but making your press brake a safe piece of equipment is largely a matter of old-fashioned common sense.

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Fighting springback in profound radius bends

September 17, 2001

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When bending sheet metal, three terms apply to the radius of the bend: sharp, radius, and profound. A sharp bend has a radius less than 63 percent of the material thickness. A radius bend has a radius between 63 percent and 10 times the material thickness. A profound radius exceeds 10 times the material thickness and an entirely new set of rules apply. This article presents those rules.

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In search of the perfect bend

August 16, 2001

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Press brake manufacturers have made tremendous advances in the art of machine design and manufacturing.

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The Brakes: Press Brakes and You -- Preventing common mistakes on press brakes

August 16, 2001

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Most common mistakes made while operating press brakes can be avoided with a little diligence and awareness of where others have gone astray.

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Bend deduction charts

July 26, 2001

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Quite often I am asked, "Where can I get a bend deduction chart that works, one with valid numbers?" That's a good question.

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The Brakes- Press Brakes and You -- How to get the most out of your press brake

June 18, 2001

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Problems with your press brake imperil what could be the most valuable machine you have. Take pains to ensure the health of this valuable piece of equipment.

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Leaping the hurdles to press brake automation

June 12, 2001

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Understanding the obstacles to automating press brakes requires an analysis of the bending process.

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Discovering the limits of press brake tooling

May 30, 2001

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One of the most important aspects of press brake forming is tooling selection. What are the tools capable of? What kinds of loads can they withstand?

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Urethane tooling for radius bending on press brakes

May 15, 2001

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What are urethanes? How do they work for radius bending? What is the proper pad type for my application? These are important questions to answer before using urethane tooling for your next job.

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Selecting a new press brake

March 23, 2001

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Prospective buyers of press brakes are advised to consider their purchase in terms of its end use, the amount of deflection likely to occur in a give machine, the inside radius of their parts, and several other factors before speding their money.

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