Piezo actuator, High stiffness , Fast response, Push type

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

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

 

Features of the MechaTrans®KK-Series

・High resonance frequency.

・High speed linear actuation.

・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®KK-Series elongates as Fig.2 when a voltage applied.

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

 


The operating principle of the MechaTrans®KK-Series

Mechanical tapped holes are fabricated at both sides of the MechaTrans®KK-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®KK-Series elongate 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®KK-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®KK-Series

<MTKK 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
MTKK03S45F4 15×3×4.8 45 4 0.09  5100 0.03  Download 100,000 95,000 80,000 70,000
MTKK08S70F20 14.7×8×4.5 70 20 0.29  6500 0.40  Download 80,000 76,000 64,000 56,000
MTKK08S180F30 28×8×8 180 30 0.17  3000 0.87  Download 85,000 80,750 68,000 59,500
MTKK12S100F40 24×12×7.13 100 40 0.40 6600 1.40 Download 95,000 90,250 76,000 66,500
MTKK12S400F140 56×12×16 400 140 0.35  1600 8.40  Download 120,000 114,000 96,000 84,000

 

<MTKK Series - Non Magnetic>

  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
MTKK08S180F30NM

28×8×8

180 30 0.17 3000 0.87   95,000 90,250 76,000 66,500

 

<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
Price [¥]
1pc 5pcs
&
above
25pcs
&
above
100pcs
&
above
MTKK16S400F170R 72×21×15 400 170 0.43 1200 12.5 Download 180,000 171,000 144,000 126,000
MTKK16S550F140R 72×21×15 550 140 0.25 970 12.5   180,000 171,000 144,000 126,000

 

<MTKK Series – With Parallel Spring>

  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

MTKK05S300F80PS

58×5×25

300 80 0.27 1500 3.22   110,000 104,500 88,000 77,000
MTKK10S300F120PS 84×10×36.8 300 138 0.46 1170 12   245,000 232,750 196,000 171,500

 

 


Operating precautions for MechaTrans®

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