Rotary three-dimensional piezoelectric force measurement cutter handle device

The invention discloses a rotary three-dimensional piezoelectric force measurement cutter handle device, belonging to the field of a force measurement device of a piezoelectric sensor, and particularly relates to a device for directly measuring an axial force, a tangential force and a torque applied to a cutter in a machining process such as milling and drilling. The device is composed of a replaceable milling cutter handle upper end, a piezoelectric sensor part, a signal transmission part and a cutter handle lower end, wherein the piezoelectric sensor part is composed of a sensor upper shell, a three-dimensional piezoelectric quartz measuring crystal group, an insulating sleeve, a sensor lower shell, a tangential force, an axial force, a torque signal inner lead wire and the like. By using three bearings to respectively serve as output paths for the axial force, the tangential force and the torque signal of the piezoelectric sensor, the rotary three-dimensional piezoelectric force measurement cutter handle device solves the signal wireless transmission problem when the piezoelectric sensor is arranged on a main shaft of a machine tool. The rotary three-dimensional piezoelectric force measurement cutter handle device reduces damage from cutting and a cutting liquid to a force measurement instrument, is suitable for monitoring a cutting force in the processing of precise parts, and improves the cutting automation level.