With press brakes, the machine frames tend to deflect during the bending process. Without correction, the top tool does not penetrate the bottom die as deeply across the machine length, especially towards the center of the press brake. As a result, the bending angle is not constant over the entire length. Wila has developed a very advanced solution to this common problem.
Wila Crowning systems are characterized by their extremely compact design without any externally moving parts. Control often takes place automatically via a CNC drive motor integrated to the machine controller, eliminating the need for the press brake operator to make adjustments for machine deflection.
The basis of Wila Crowning is the patented ´Wila Wave´ opposing wave technology, by which the bottom tools are supported along the entire length. The opposing waves are provided with different slope angles, higher towards the center and shallower towards each end. By shifting the bottom wave in the longitudinal direction with a CNC-operated motor (standard 400V-3PH-50HZ) or with manual adjustment, a curve is created. In this way, the deflection of the entire press brake is automatically compensated proportionately the entire machine length. The crowning system is also equipped with localized adjustments by which the crowning can be aligned over both the X axis (Tx, to correct alignment) and Y axis (Ty, to compensate for unavoidable machining tolerances). The New Standard and American Style crowning systems come standard equipped with an aluminum Cover Strip including an integrated ruler.
All New Standard Premium Crowning systems are outfitted with Guards as standard; with New Standard Pro and American Style crowning systems Guards are optional.
Wila provides these systems in the following lines
- New Standard Premium Crowning
- New Standard Pro Crowning
- American Style Crowning
- Custom Style crowning
As indicated, the “Wila Waves” can be adjusted via CNC motor or via manual adjustment. On the New Standard Pro and American Style manual retrofit versions, these can have the operating mechanism for centralized crowning adjustment on the front right of the crowning unit. The advantage of this is that bottom tools can be slid into the tool adaptation from both sides and there is no interference for bending parts off the ends of the crowning systems.
All available adjustment options (right hand side):
- “CNC” means motorized at the end
- “H” means manual at the end
- “Hf” means manual in the front
- “Hy” means hydraulic at the end (used with large units only)
"CNC" execution "H"execution "Hf"execution