STUDER S131

UNITED GRINDING Offers Two New Radius Internal Cylindrical Grinding Machines

United Grinding has added two new radius internal cylindrical grinding machines to its line of STUDER internal cylindrical grinding machines. The S121 and the S131 extend part production capabilities by offering more advanced technology and a new dressing concept.

With a workhead on a newly arranged simultaneously swiveling B-axis, the S121 and S131 radius grinding machines offer greater thermal stability, mechanical rigidity and interpolation from -60 degrees to +90 degrees. The machines are also equipped with a dressing spindle or a fixed dresser on the B-axis and a measuring probe on the grinding head.

 The new machines feature Granitan^® machine beds which provide higher dampening levels, thermal stability and guidance accuracy. The StuderGuide^® guideway and drive system with linear motors provide high wear resistance, a long working life and high dynamics. It also includes X and Z axes in a cross-slide arrangement as well as a cross slide, which in the case of the S121 can take one spindle, two spindles in parallel or two spindles on a hydraulic turret. In the S131 machine, the cross slide comes with a four-position turret with direct drive. The spindle on the radius grinding machine is arranged at the rear of the turret.

Both radius internal cylindrical grinding machines are powered by StuderSIM software that enables an operator to machine complex parts – often in a single clamping. StuderSIM derives workpieces from a drawing and completely defines and generates all necessary geometric data for the grinding cycles. Furthermore, operators can easily check and visualize the grinding process through simulation on a PC or on the machine.

With swing diameters of 9.84" and 11.8" above the table respectively, the S121 and S131 replace STUDER’s CT700 and CT900 models. The machines enable external diameters up to 6.3" to be machined with an external grinding wheel 9.8" in diameter. The maximum length of parts including clamping device is 11.8" for the radius grinding machines, and the maximum workpiece weight including clamping device is 220 lbs.

The new radius grinding machines are ideal for manufacturing dies, especially in the packaging industry, where tungsten carbide and ceramic are primarily processed, and the production of hydraulic components such as axial pump pistons, guide plates and housings made of hardened steel, cast iron and copper. The machines are also well suited for the production of complex workpieces with several tapers greater than 20 degrees to 90 degrees in a single clamping. Examples include watch and medical technology with extra-hard materials such as industrial ceramic, sapphire and tungsten carbide, as well as the manufacturer of human implants for shoulders, knees and hips from ceramic and titanium.