Rollomatic GrindSmart Offers Flexibility for Tool Grinding
Rollomatic’s GrindSmart 630XW six-axis tool grinder allows manufacturers to grind a variety of indexable inserts and round-shank tools on a single machine.
Rollomatic’s GrindSmart 630XW machine is designed to offer more flexibility in grinding indexable inserts and other stationary cutting tools than conventional, single-purpose grinders. With its six fully interpolated CNC axes, a six‐station wheel changer and wheel inclination ranging to 45 degrees, the machine supports simple adaptation for short and long runs of individual insert designs. Its design allows full interchangeability between inserts and round tools, according to the company.
The clamping systems are designed to emulate the way inserts fit into their tool holders, increasing concentricity and accuracy. The clamping design supports indexable, non‐indexable and replaceable inserts; threading and form inserts; dog‐bone and grooving inserts; drilling, milling and ballnose tip inserts; and other non‐round tools. An electronic touch probe determines the exact location of the insert blank after clamping, allowing the software to grind the tool geometry according to the virtual centerline of the insert blank and achieve a run-out of 0.0001", according to Rollomatic.
The company says the machine’s six- or 16-station wheel and nozzle changer offers flexibility for grinding a variety of inserts and other stationary cutting tools while maintaining the ability to change to round‐shank tools within minutes.
Additional features include an IC diameter range from 3.9 to 25.4 mm with automatic handling, linear motion control on CNC axes, desktop tool design software with 3D tool simulation and 3D machine animation with collision warning, chipbreaker grinding on the rake face, edge preparation grinding on the cutting edge, and a pick-and-place robot that protects inserts from damage after grinding. Optional features include a part flipper, an in-process rotary dressing and an automatic sticking device.
No other process can do what creep-feed grinding can do. Recent tests show even more can be gained by optimizing every element of a creep-feed system.
If one must pick a manufacturing specialty, grinding carbide might not be the first choice because it’s perceived to be very difficult. RPM Carbide Die, however, has worked the material for nearly 40 years and, as specializing seems increasingly to be the order of the day, this northern Ohio shop is in a good position to thrive.
In vertical grinding, the workpiece is held upright in a rotary chuck with the grinding spindle overhead. This configuration can improve roundness, facilitate single-setup processing and prolong the life of the machine. Loading and unloading may gets easier, too. Workpieces with relatively large diameters and short lengths benefit the most from vertical grinding.