Bending Basics 2016
Proper measurement of formed parts
Measuring hems, acute angles, and unparalleled flanges aren’t difficult—if you have the right tools and dimensional information, and you know how to use both properly.
What makes an air bend sharp on a press brake
Press brake operators use rules of thumb when it comes to determining sharp bends. But what truly determines the point at which a bend turns sharp is the relationship between the punch nose radius, the tonnage required to form, and the shear strength of the material.
The meaning of the technical words mean everything
As parts become more complicated and our machines get more sophisticated and precise, there is a real need to be much more precise in our trade-related language
Determining the root causes of bending failure
When determining the root causes of part failure, look to not just the forming method and tooling, but also the quality of the material. A cheap material can be extremely costly over the long run.
How to locate the press brake backgauge position
When determining the backgauge position, you need to know the outside flange dimension and bend deduction, based on the actual radius you achieve.
Anytime the inside radius or material thickness varies, there will be a change in the bend deduction. This is just as true when bending plastic as it is when bending sheet metal.
When considering a new press brake purchase, focus on the tooling and forming method first. How will your staff react to changes? How steep will the learning curve be? Also, think about where your company is headed and the markets it serves.
Which press brake is best
No press brake is best for every application, but you can find a press brake that’s best for you. To find that press brake, you need to match what’s available—hydraulic, hybrid, electric, mechanical, and other styles, along with the tooling—with what your operation needs.
Applying the 20% rule to 6061 aluminum
Four areas to consider when bending include (1) formability; (2) thickness and bend radius; (3) tensile, yield, and elongation; and (4) how to deal with bending tempered materials. This month, Steven Benson applies these to forming 6061 aluminum.
Bending guru Steve Benson continues his discussion of notching, which has a symbiotic relationship with bending. Nowadays CAD systems take care of the layout calculations. Nonetheless, manual notch layout is still used for one-off products or in prototype shops.
Whether you are a press brake technician or you are programming in CAD, having a basic understanding of notching can lead to better products and more efficient operation.
10-tips for bottoming aluminum
Bottom bending can work well for some aluminum grades, but it requires knowledgeable operators who fully grasp the bending method and know what precautions to take.