Piezo-Actuated Workpiece Clamping for Precise Eccentric Alignment

The patent replaces conventional mechanical alignment systems with piezoelectric actuators that use electro-mechanical conversion to achieve precise workpiece positioning. The piezoelectric actuators convert electrical signals into precise mechanical displacements, enabling sub-micrometer positioning accuracy without complex mechanical adjustment mechanisms.

The patent changes the physical state and positioning parameters of the workpiece by using piezoelectric actuators to apply controlled forces and displacements. The actuators can dynamically adjust positioning parameters such as radial position, axial position, and angular orientation, enabling both precise coaxial alignment and intentional eccentric positioning according to machining requirements.

The patent performs preliminary positioning actions using piezoelectric actuators before the actual machining operation begins. The actuators pre-adjust the workpiece to the required position and orientation, ensuring that when machining starts, the workpiece is already in the optimal position, thereby eliminating time-consuming alignment adjustments during the machining cycle.

The patent replaces slow manual or mechanical alignment processes with rapid piezoelectric actuation that can achieve precise positioning in milliseconds. The electro-mechanical response of piezoelectric materials enables extremely fast positioning speeds, dramatically reducing alignment time and overall cycle time while maintaining high positioning accuracy.

The patent introduces dynamic positioning capabilities by using piezoelectric actuators that can be controlled in real-time during the machining process. The actuators can dynamically adjust the workpiece position to compensate for tolerances or to intentionally create eccentric positioning, transforming a static clamping device into a dynamically adjustable system that adapts to different machining requirements.

The patent makes the clamping device universal by enabling it to perform multiple functions: precise coaxial alignment, intentional eccentric positioning, tolerance compensation, and real-time position adjustment. The piezoelectric actuator system provides multi-functionality, allowing the same device to handle various positioning requirements without requiring additional specialized equipment.