Three-Flute Drill Extends Tool Life at Higher Feed Rates
Mapal’s three-flute Tritan-Drill is said to achieve more bores, a longer tool life and lower machining costs compared with two-flute drills.
Mapal’s three-flute Tritan-Drill is said to achieve more bores, a longer tool life and lower machining costs compared with two-flute drills. This universal drill handles a range of materials and provides rounder bores with fewer burrs, the company says, thanks in part to a tool geometry optimizing chip removal and providing low cutting pressure. The drill’s design enables higher feed rates with process reliability, and includes chip formation features making it useful for long-chipping materials. Models are available with diameters ranging from 5 to 20 mm and in lengths ranging to 8×D.
Applications include machining cylinder heads at high feed rates, VA rails made of heat-resistant steel alloys, and turbochargers made of cast steel. The drill can handle steels, cast materials and nonferrous metals.
Liquid coolant offers advantages unrelated to temperature. Forced air is the fluid of choice in this shop...but even so, conventional coolant can't be eliminated entirely.
With macros and canned cycles resident in the CNC on most contemporary turning centers, single point turning of OD threads can seem like almost a default process decision. However, for numerous applications, OD thread rolling has inherent advantages as an alternative to cutting threads.
Consider these alternatives when conventional drilling can't do the job.