Spindle unit for machine tools for precise machining of workpieces with grooved profile

摘要

A spindle unit for a machine tool for precisely machining a workpiece having a groove-like profile, in particular a tooth, has a spindle shaft 2 rotatably mounted. The spindle shaft is continuously provided in the axial direction AR with a mounting portion A, a first bearing portion B, a force transmitting portion C and a second mounting portion A for attaching the tool 4 or the work to be machined And a bearing portion (D). The drive unit 5 transmits a force to the force transmission portion C to drive the spindle shaft 2. [ The first bearing point 13 and the second bearing point 14 are designed to support the spindle shaft 2 at the first bearing portion B and the third bearing point 15 is designed to support the second bearing portion D And the spindle shaft 2 is attached to the spindle shaft 2. Each of the first bearing point 13 and the second bearing point 14 has one or more hydrostatic bearings and is also designed to receive radial and axial forces. The third bearing point 15 has one or more hydrostatic bearings and / or hydrodynamic bearings and is also designed to receive radial forces.;