Trajectories of the blades in an automatic panel bender (Part I)

Sheet Metal Processing News 21. Dec, 2012 | by

As we told you in the last week post, the DANOBAT automatic panel bender, as the rest of its range of punching machines, punch-shear and punch-laser combination machines and fiber laser cutting machines, is a very sophisticated machine and the best solution for complex bends and high added value applications.

The DANOBAT automatic panel bender has some sophisticated computer algorithms that control the trajectory of the bending blades, according to three types of bending interpolation. Between this week and the next we will explain these three types of interpolations, and the advantages and disadvantages of each one of them.

Trajectories of the blades in an automatic panel bender: Constant Attack Distance

Trajectories of the blades in an automatic panel bender: Constant Attack Distance

 

The first of these three interpolations is called “Constant attack distance”, and is defined as “lever arm” on which the blade performs the bending effort. In this type of interpolation the attack distance stays constant throughout the process of bending (red line). The green line is the sliding of the plate on the blade, while the blue line shows the sliding of the blade on the plate.

 

 

 

The advantages presented by this kind of interpolation are that the bending radius, as well as the minimum length of the bend tab can be very small. On the contrary, the disadvantage would be that the plate would show a light mark where the blade contacts it (blue line).

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