The MechaTrans®DD-Series is a compact piezoelectric actuators that can generate large output strokes, which is 10 times and above larger than the stroke of a multilayer stacked piezoelectric actuator. The MechaTrans®DD-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. The MechaTrans®DD-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®DD-Series, it elongates as shown in Fig. 2.

 

Features of the MechaTransRDD-Series

・large output stroke

・Flat and compact.

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

・The MechaTrans®DD-Series elongates as Fig. 2 when a voltage applied.

・Output stroke direction is opposite to the MechaTrans®D-Series

 

The operating principle of the MechaTransRDD-Series

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

Fig.1 The piezoelectric actuator system

 

Fig.2 Operating principles of the MechaTransRDD-Series

 

Applications of the MechaTransRDD-Series

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

・Positioning stage for lithography process
・Auto focus module for a camera.
・Precision pump

 

List of the MechaTransRDD-Series

＜MTDD Series＞

	Outline dimension [mm] WxDxH	Displacement [μm] *1	Blocked force [N] *1	Stiffness [N/μm] *1	Resonance frequency [Hz] *1 *2	Capacitance [μF] *1	Solid Model	Price [￥]
MTDD03S50F3	15×3×5	50	3	0.06	1500	0.03		100,000
MTDD06S100F10	20×6×7	100	10	0.10	700	0.2		80,000
MTDD06S100F11	20×6×7	100	11	0.11	900	0.36		85,000
MTDD08S180F32	28×8×8	180	32	0.18	900	0.9		90,000
MTDD08S300F16	26×8×7	300	16	0.053	460	0.7		90,000
MTDD08S350F18	26×8×8	350	18	0.051	500	0.8		95,000
MTDD16S750F90	52×16×14	750	90	0.12	230	8.0		120,000
MTDD16S900F110	52×16×14	900	110	0.12	240	11.3

 

*1 : Nominal value
*2 : Blocked-Free

 

Operating precautions for MechaTransR

Please confirm the following operating precautions before using MechaTransRDD-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