Cylindrical Grinder Delivers Efficiency, High Tolerances

The S12 production external cylindrical grinding machine, from Fritz Studer AG, is designed in a logicallyconsistent manner for efficient series production. Dynamic axis drives with linear motor technology, short response times, short travels, and fast integrated loading systems make the S12 ideal for precision and productivity. This is further helped by the high-speed grinding (HSG) option with circumferential speeds of up to 140m/s.

The X and Z axes are mounted in the form of cross slides, with the longitudinal table firmly bolted to the machine. This cross slide system has proven itself over the years for the machining of small components. With a layout of just 4m2, it is compact and accessible.

Precision is the result of perfect interaction between a large number of different factors. The base is the Granitan S103 machine bed with its damping characteristics and favorable thermal behavior. The modules are ideally suited to each other, and the large distance between the guideways and rigidly constructed slides form the basis for the precision and productivity of this machine. All of the components that determine precision are actively temperature-stabilized.

The hydrostatic guide system magnetically pretensioned via linear motors ensures high dynamics and precision throughout the life cycle of the grinding machine. The combination of linear motors and hydrostatic guides permits axis movements of 30m/min and resolutions of 0.01µm. The X and Z axes can be fitted with ballscrews as an option.

The S12 is built precisely according to the customer's needs in a modular design. This results in a tailor-made machine with components such as diverse dressing concepts; additional NC axis for profiling the grinding wheel; internal grinding spindle on a separate cross slide with arbor deflection compensation; an integrated loading unit and loading cells; and diverse in-process gaging and sensor technology.

The wide lifting door of the S12 provides optimum access to the working area. Large service doors on the left and right make the user's work easier and offer optimum possibilities for the adaptation of automated loading systems. The control cabinet can be moved back like a drawer for maintenance purposes. The pneumatics and hydraulic unites are integrated into the machine in a vibration and thermally decoupled manner.