WORKPIECE SPINDLE FOR A MAGNETIC-SHOE EXTERNAL CYLINDRICAL GRINDING MACHINE, AND MAGNETIC-SHOE EXTERNAL CYLINDRICAL GRINDING MACHINE

摘要

Provided is a workpiece spindle (10) for a magnetic-shoe external cylindrical grinding machine, having a spindle (12) for rotating a workpiece (21), a holding device (18) for holding the workpiece (21), wherein the holding device (18) has holding shoes, configured as magnetic shoes (46), for clamping the workpiece (21) in the holding device (18), and a hydraulic magnetic-core lifting device (28), coupled to the spindle (12) and to the holding device (18), for varying an axial spacing between the holding device (18) and the spindle (12). By way of the holding device (18), which is axially displaceable with the aid of the hydraulic magnetic-core lifting device (28), the automated feeding of the workpiece (21) can take place more cost-effectively and increased precision in the manufacturing of the workpiece (21) can be achieved, so as to allow cost-effective grinding of annular workpieces (21) with high precision.