The WTX Feed solid-carbide twist drill with Dragonskin coating technology has been designed to achieve precise positioning and maximum performance, even in difficult drilling situations.
Available from Sheffield-based WNT (UK) Ltd (
www.wnt.com), this drill is suitable for difficult spot-drilling applications, including on inclined surfaces; and while the drill has three cutting edges, it is the aggressively shaped self-centred cross-cutting edge that ensures precise positioning from the first contact with the workpiece.
Furthermore, the design of the drill is such that it “cannot slip”, even at feed rates up to three-times those used for conventional drills with two cutting edges.
The flute design also ensures that only a minimum of burring occurs as the drill exits the workpiece — plus it reduces the cutting pressure and cutting temperature, which minimises wear.
Other features of the WTX Feed include the point thinning and variable approach angle that creates a smooth transition into the flute; this ensures that even ‘long chipping’ materials are effectively evacuated from the cutting area as short curled chips.
The WTX Feed drill is also effective under ‘difficult’ conditions when using just a minimum of mist coolant. When drilling an engine block (made of grey cast iron) that involved interrupted cutting, the drill achieved precise positioning; and compared with a similar competitive product, it cut the cycle time by 20% while increasing the tool life three-fold.
In another application, the drill doubled the feed rate at the same cutting speed — and doubled the tool life.