Six-Axis Grinder Designed for Long Drills

Rollomatic’s GrindSmart 528XF is a six-axis CNC tool grinder designed for grinding long drills with diameter-to-length ratios ranging to 150×D.

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Rollomatic’s GrindSmart 528XF is a six-axis CNC tool grinder designed for grinding long drills with diameter-to-length ratios ranging to 150×D. A CNC traveling workhead (sixth axis) enables the production of long drills with flute lengths ranging to 12". The grinder also features a SmartChanger six-station wheel and nozzle changer with HSK0E arbors, tested for repetitive concentricity of less than 2 microns. In addition, the machine manufactures carbide or HSS drills as well as other high-performance end mills.

A 20-hp, synchronous direct-drive grinding spindle supports constant rpm with no chatter marks in the flutes, producing super-sharp cutting edges. The drill steady rest is said to support back taper as well as a combination of back taper and cylindrical drill relief. Other features include neck grinding for long-reach end mills and an optional camera for locating small coolant holes down to 0.05 mm. 

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