Studer's S12 cylindrical grinder features a special drive/guide system for programming in-feed movement in 10-nanometer steps.
S12 specs:
Grinding length — 5.10 in.
Center height — 6.89 in.
Workpiece weight — 66.14 lb
Spindle drive — 7.5-12.5 kW / 4 hp
Grinding wheel dimensions — 19.6833.14 in
Studer's new S12 cylindrical grinder takes precision to extreme levels, according to United Grinding, Miamisburg, Ohio. The machine makes its U.S. debut at the Production Grinding Conference in Cincinnati on June 21.
The heart of the machine is a special drive/guide system based on high-precision, positionable linear motors. The grinder also boasts extremely rigid slides with magnetically pre-tensioned hydrostatic bearings. Together, these features mean that users can program in-feed movement in 10-nanometer steps.
The linear motors also make for a fast machine. In fact, the S12 delivers in-feed speeds of 1,181 ipm and axis accelerations of 118 in./sec2.
For thermal stability, an integrated cooling device keeps motors, hydrostatics, and electronic components at constant temperatures. The grinder's Granitan bed furthers thermal stability while also dampening vibration.
The S12 is a modular system, so it adapts to simultaneous external and internal grinding as well as centerless grinding. In addition, the machine tackles both CBN and high-speed grinding.
Special features include a highprecision C axis, cylinder correction, and a workhead with hydrostatic bearings and synchronous-drive technology. The internal-grinding spindle is on a separate cross slide for simultaneous grinding of internal and external diameters. An additional NC axis handles grinding-wheel profiling. Automatic parts loading and unloading are possible using a standard interface.
The new StuderWIN control unit, based on the Siemens 840D, makes for quick and simple programming. It also allows central control and operation of all peripheral units, such as loading systems, in-process gaging, balancing systems, and sensor technology.
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