The MechaTrans®KK-Series is a piezoelectric actuator that has a higher rigidity/stiffness and higher resonance frequency compare to the MechaTrans®DD-Series or the MechaTrans®D-Series. Therefore the MechaTrans®KK-Series has a shorter rise time. The MechaTrans®KK-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 MechaTrans®DD-Series or the MechaTrans®D-Series. Like the MechaTrans®DD-Series or the MechaTrans®D-Series, the MechaTrans®KK-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 MechaTrans®KK-Series, it elongates as shown in Fig. 2.

 

Features of the MechaTransRKK-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 MechaTransRKK-Series elongates as Fig.2 when a voltage applied.

・Output stroke direction is opposite to the MechaTransRK-Series

 

The operating principle of the MechaTransRKK-Series

Mechanical tapped holes are fabricated at both sides of the MechaTransRKK-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 MechaTransRKK-Series elongate as shown in Fig. 2.

Fig.1 The piezoelectric actuator system

 

Fig.2 Operating principles of the MechaTransRKK-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 MechaTransRKK-Series

＜MTKK Series＞

	Outline dimension [mm] WxDxH	Displacement [μm]	Blocked force [N]	Stiffness [N/μm]	Resonance frequency [Hz]	Capacitance [μF]	Solid Model	Price [￥]
MTKK08S70F20 Datasheet Download	14.7×8×4.5	70	20	0.29	6500	0.40		80,000
MTKK08S180F30 Datasheet Download	28×8×8	180	30	0.17	3000	0.87		85,000
MTKK12S400F140 Datasheet Download	28×12×16	400	140	0.35	1600	8.40		120,000

 

＜MTKK Series-圧電素子交換型＞

	Outline dimension [mm] WxDxH	Displacement [μm]	Blocked force [N]	Stiffness [N/μm]	Resonance frequency [Hz]	Capacitance [μF]	Solid Model
MTKK16S400F170R Datasheet Download	72×16×15	400	170	0.43	1200	12.5

Operating precautions for MechaTransR

Please confirm the following operating precautions before using MechaTransRKK-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