The MechaTransRK-Series is a piezoelectric actuator that has a higher rigidity/stiffness and higher resonance frequency compare to the MechaTransRDD-Series or the MechaTransRD-Series. Therefore the MechaTransRK-Series has a shorter rise time. The MechaTransRK-Series consists of a stroke magnification / amplification structure and multilayer stacked piezoelectric actuators. With the stroke magnification structure, the stroke is magnified to overcome the limitation of the multilayer stacked piezoelectric actuator. However, the magnifiation / amplification ratio is smaller than the MechaTransRDD-Series or the MechaTransRD-Series. Like the MechaTransRDD-Series or the MechaTransRD-Series, the MechaTransRK-Series is designed flat and compact in size, therefore the efficiency of the space utilization is high. The output stroke is converted to 90 degree in direction compare to the original output stroke of the multilayer stacked piezoelectric actuator. When a voltage is applied to the MechaTransRK-Series, it shrinks as shown in Fig. 2.

 

Features of the MechaTransRK-Series

・High resonance frequency.

・High blocked force.

・Fast response / Short rise time

・Flat and compact.

・Output stroke of the piezoelectric actuators is converted to 90 degrees in direction.

・The MechaTransRK-Series shrinks as Fig.2 when a voltage applied.

・Output stroke direction is opposite to the MechaTransRKK-Series

 

The operating principle of the MechaTransRK-Series

Mechanical tapped holes are fabricated at both sides of the MechaTransRK-Series. Lead wires of red and black(white) are attached at the piezoelectric actuators. Fig. 1 shows an example of the connection between the driver and the piezoelectric actuators. A resistance may be needed in between depend on the driving conditions. When a voltage is applied to the piezoelectric actuators, the MechaTransRK-Series shrinks as shown in Fig. 2.

Fig.1 The piezoelectric actuator system

 

Fig.2 Operating principles of the MechaTransRK-Series

 

Applications of the MechaTransRKK-Series

These are some examples of the application of the MechaTransRKK-Series.

・Haptics actuator
・Precision stage for lithography process.
・Auto focus module for camera
・Mass flow

 

List of the MechaTransRK-Series

＜MTK Series＞

	Outline dimension [mm] WxDxH	Displacement [μm]	Blocked force [N]	Stiffness [N/μm]	Resonance frequency [Hz]	Capacitance [μF]	Solid Model	Price [￥]
MTK12S100F65 Datasheet Download	24×12×7.96	100	65	0.65	8000	1.31		―

 

Operating precautions for MechaTransR

Please confirm the following operating precautions before using MechaTransRK-Series.

1）Hysteresis

2）Continuous DC voltage under high humidity

3）Avoid excess tensile force against PZT and/or compression force to the arm

4）Do not superimpose DC voltage instantaneously

5）Ambient temperature

6）Polarization