Concept Laser Inc. (Grapevine, TX; Lichten- fels, Germany). The hybrid manufactured tools include a tool shank that is machined conventionally and the drill that is laser melted with additive methods. The approach makes the manufacturing process signifi cantly more economical. According to Dr. Dirk Sellmer, head of research and development at MA- PAL, “Hybrid strategies are the ideal methods of choice. Simple component parts are ma- chined and more complex areas are then built up additively.” Using laser melting the smaller diameter QTD insert drills are able to be ad- ditively manufactured with 100% increased coolant fl ow rate, increased core stability due to coolant channels running parallel to the fl ute. Sizes come in 1.5×D, 3×D, 8×D, and 12×D lengths with inserts type 1-4 for steel, stainless steel, cast iron, and aluminum.


“We manufacture the QTD insert drill on the hull/core principle. First the core of an insert drill is built with the cooling system, which is added to the conventional shaft. In a second additive run, the outer hull is built up with higher densities, which is close to the ideal for a good drill bit—hard outside and soft inside,” said Sellmer. The greatest advantage of transitioning


QTD insert drills feature new slightly triangular cooling duct profi les that increase fl ow rate by 30% in tools that can’t be produced conventionally.


from a conventional manufacturing strategy to additive manufacturing is that it facilitated design of entirely new geometry, increasing the performance of the tools. “The additively manufactured insert drill has a cooling con- cept with spiral ducts, which improves the cooling performance. Compared with the previous central coolant supply with the Y diversion, a spiral coolant routing increases the coolant fl ow by 100%,” said Sellmer.


15,000 WAYS TO SECURE PRODUCTIVITY Comprehensive clamping and gripping solutions


For more than 100 years, we have run the gamut on powerful and precise clamping and gripping solutions that help manufacturers secure their productivity and profitability. From chucks and live centers to vises and tool clamping systems, our complete product line backed by superior service and support will help you maximize your holding power.


RÖHM Products of America | www.rohm-products.com | offi ce@rohm-products.com I 1-800-445-7646 April 2016 | AdvancedManufacturing.org 47


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