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Sandvik Coromant has upgraded its CoroCut QD Y-axis parting tools to enable improved surface quality, reduced vibration and higher blade stiffness.

CoroCut QD enables for the parting off of much larger diameters than what is currently possible with conventional methods, according to the company. Additionally, shifting the resultant load to the strongest section of the blade creates six times higher blade stiffness, enabling increased feed and longer overhangs without losing stability.

More specifically, the blades have been upgraded to have no Y offset, meaning easier programming and increased stroke. The blades also have a stop surface that serves two important application needs — preventing the blade from being pushed into the adapter and enabling easier setup.

“Conventional parting off uses feed motion along the X axis, which means the cutting force is directed through the weakest section of the blade,” says Fredrik Selin, global product application specialist in turning. “This can lead to deformation and instability. By rotating the insert pocket 90 degrees and using the Y axis, the cutting force is shifted down through the complete blade length, resulting in an increased blade stiffness of up to 600%.”

“CoroCut QD is ideal for parting off in turning centers and multitask machines with Y axis,” Selin adds. “This includes parting off in sliding head machines, large diameters of up to 120 millimeters and long overhangs to reach between main and sub chuck. So, when there is the need to part off or machine deep grooves without compromising process security or machining efficiency, the upgraded CoroCut QD solution is the perfect choice.”