Wila Tooling

Wila's standard program consists of a wide variety of New Standard, European Style and American Style top tools (BIU), bottom tools (OZU), holders (HU), adaptors (TSU) and Dutch bending tools (DDU). 



Despite differences in function, geometry, and clamping principle, all of the tools in the BIU, OZU, HU and DDU series have a number of common properties:

> All of the tools are made from steel composed specifically for this purpose that has high tensile strength, toughness and load-bearing capacity.

> The tools are ground with extremely high precision. This precision guarantees the exchangeability of the tools.

> The bending radii of the tools are CNC deephardened. As a result, the tools are suitable for bending nearly every type of material while wear is minimized and their economic life is drastically increased.

> BIU and OZU tools are available for both air bending and bottom bending.

> All tools are modular and available in a large number of standard lengths. Using these sets, any length can be achieved with 5 mm / 0.2ä increments.

> All tools are clearly marked with the necessary user information.


Clamping
With reference to the clamping of its New Standard top tools, Wila now markets its New Standard Clamping I (NSCL I). In continuation of the Universal Press Brake Concept, the program has been expanded to include New Standard Clamping II (NSCL II, for New Standard tools), European Clamping (ECL, for European Style tools) and American Clamping (ACL, for American Style tools). In addition, Custom Made clamping systems (CCL) can also be produced.

Crowning
Press brakes (and folding machines) suffer from a difficulty that has existed from their very beginnings and that is inherent to their construction: the phenomenon that the machine frames deflect somewhat during the bending process. If no correction is made for this deflection, the top tool does not penetrate the same depth into the bottom tool all over the working length. As a result, the bending angle is not constant over the entire product length.



In the course of time, various solutions have been developed to compensate for this deviation. 
One of the oldest solutions is shimming or crowning the bottom tool. The most readily available items were used for this purpose, varying from strips of paper and metal to brass strips. Experienced operators achieved some results in this manner, but it was a time-consuming task that had to be repeated for each product.

As an alternative to the corrections made with paper, metal and brass strips, simple mechanical crowning systems were soon introduced. Using numerous adjustment screws and their corresponding wedges, one by one the top or bottom tool was raised. This too, however, required much time and skill if acceptable results were to be achieved. This is why this solution is used considerably less these days.

In the late 1970s, a breakthrough was achieved when Wila developed its centrally-adjustable crowning system type CVB. Based on this initial design, in later years the improved versions, types CVB/D and NSCR I, were introduced. Today, NSCR II represents the most advanced solution in the area of crowning.