Replaceable Drill Head Supports Deep Hole Making at Lower Cost
Sumitomo Electric Carbide expands its SMD replaceable drill head line to include 12×D drills. The drill head line supports deep hole making at a lower cost, the company says. Users can buy one drill body to fit as many as five head sizes.
The SMD drill heads feature a radial serration coupling design that promotes high-precision, stable drilling and therefore accuracy and repeatability by affixing the replaceable carbide tips to the drill face. The drill head’s polished flute enhances chip evacuation. The nickel-plated body is said to provide longer tool life than conventional replaceable tip drill bodies. A tough carbide substrate with the company’s DEX coating offers wear resistance at the cutting edge.
The company’s SMDT-MTL drill tips support steel applications, while the SMDT-C tips have a chamfered edge to eliminate breakout in cast iron applications. The SMDT-MEL is designed for machining super alloys, stainless steels and cast iron.
Along with the 12×D drills, Sumitomo’s SMD line also includes 3×D, 5×D and 8×D replaceable carbide tip drills.
The more common twist drill point geometries often are not the best for the job at hand. By choosing the best point for the material being drilled, it is possible to achieve better tool life, hole geometry, precision, and productivity.
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.
The right choices in tooling and technique can optimize the thread turning process.