Piezo actuator, High stiffness , Fast response, Pull type

Piezoelectric, Piezoelectric Actuator, high resonance frequency, higher rigidity/stiffness

The MechaTrans®K-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®K-Series has a shorter rise time. The MechaTrans®K-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®K-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®K-Series, it shrinks as shown in Fig. 2.

 

Features of the MechaTrans®K-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 MechaTrans®K-Series shrinks as Fig.2 when a voltage applied.

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

 


The operating principle of the MechaTrans®K-Series

Mechanical tapped holes are fabricated at both sides of the MechaTrans®K-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 MechaTrans®K-Series shrinks as shown in Fig. 2.

Piezoelectric, Piezoelectric Actuator

Fig.1 The piezoelectric actuator system

 

Piezoelectric, Piezoelectric Actuator, high resonance frequency, higher rigidity/stiffness

Fig.2 Operating principles of the MechaTrans®K-Series

 


Applications of the MechaTrans®KK-Series

These are some examples of the application of the MechaTrans®KK-Series.

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

 


List of the MechaTrans®K-Series

<MTK Series>

  Outline
dimension
[mm]
WxDxH
Displacement
[μm]
Blocked force
[N]
Stiffness
[N/μm]
Resonance frequency
[Hz]
Capacitance
[μF]
Solid
Model
Price [¥]
1pc 5pcs
&
above
25pcs
&
above
100pcs
&
above
MTK08S130F13
Datasheet Download
28×8×8 130 13 0.10 1750 0.73   85,000 80,750 68,000 59,500
MTK12S100F65
Datasheet Download
24×12×7.96 100 65 0.65 8000 1.31   95,000 90,250 76,000 66,500
MTK12S18f25000 12×4.6×12 18 14 0.80 25000 0.60 Download 100,000 95,000 80,000 70,000

 

 


Operating precautions for MechaTrans®

Please confirm the following operating precautions before using MechaTrans®K-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

 


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