Patent ID: 8240396
Filing Date: 2012-08-14
Classification: B23B

Abstract:
1. A tool comprising a tool holder and a rotating spindle driver; with the tool holder comprising a carrier element and a primary spindle shaft and being provided at a first end with a tool holder recess for adapting to the rotating spindle driver and at a second end with a first tool recess supporting the primary spindle shaft and allowing the oscillation of the primary spindle shaft in an axial direction of the spindle shaft, and with a tool head that can be inserted into a second tool recess of the primary spindle shaft, and with the tool holder and the spindle driver forming an oscillating motor, wherein the oscillating motor oscillates the tool holder via a piezo-system and the piezo-system comprises a first fixed coil and a second coil that engages the tool holder, wherein the first coil is located at a distance from the second coil and the second coil is connected to a piezo-actuator and connected with the carrier element in a fixed manner and the first and second coils are located over top of each other with reference to the axial direction of the spindle shaft.