Soft and smooth  

In spite of the ingenuity – or perhaps even because of it –the S-Cut is easy to explain with the S-curve of the cutting edge and the extremely irregular pitch making it a highly innovative tool. This patent pending system is claimed to be the next new star among milling cutters by its manufacturer.

The result of intensive research in collaboration with an institute for applied research services, the S-Cut SC-Uni from WNT is a high performance cutter (HPC) with soft cutting and smooth running capabilities. Its new geometry is said to positively influence the vibration behaviour of the cutter. These characteristics not only have a highly positive impact on tool life, but also improve the surface quality of the workpiece, as fewer vibrations are produced during milling. Thanks to the soft cutting action of the S-Cut SC-Uni, feed rates can be increased to reduce cycle times.

With the S-Curve geometry the helix angle becomes smaller until the inflection point is reached. From this point onwards, the helix angle increases again. This results in a significant improvement in cutting performance along with considerably smoother cutting action.

"During test runs with the SC-Uni, we witnessed a substantial reduction in vibrations," comments Daniel Rommel, the WNT product manager responsible for the SC-Uni. “Naturally, this had a very positive effect on the tool life, which was increased by more than a third, along with the benefits of increased feed rates that increase productivity.”

Further assisting the elimination of vibration is the S-Cut’s irregular pitch of the cutting edges, which counteracts the induced vibrations from tool to workpiece to machine tool system caused by entry and exit frequencies when making the cut. This results in a stable machining process with hardly any visible chatter marks.

"There was a visible improvement in the surface quality compared with conventional solid carbide milling cutters," emphasises Mr Rommel. "Not only does this increase process stability, it also ensures that the spindle output of the milling machine is fully exploited."

One final benefit of the extreme irregular pitch also makes possible higher depths of cut at large angles of engagement, which increases the maximum cutting depth significantly.

Thanks to its improved performance and high wear resistance the S-Cut guarantees high levels of cost-effectiveness. Its universal application options for machining steel and stainless materials make it ideal for applications that demand a long service life and high quality machining.

To see the S-Cut in action, go to

WNT www.wnt.com