Precise positioning stage of THK PRECISION

XAxis High durability model

XAxis High durability model

Standard linear stages constitute a basic series among the piezo stage lineup, which ranges from single-axis types to integrated three-axes types with various strokes.

Classification of performances with two mechanisms

The mechanisms are classified into a "direct-drive mechanism," which has a high resonant frequency and is focused on high-speed response, and a "displacement magnification mechanism," which secures a stroke.

  • Direct-drive mechanism

    • A mechanism in which a piezo-electric elements directly moves the table.
    • It excels in resolution and response thanks to a short stroke.
    • With high rigidity, it is capable of performing stable positioning even under a large load.
    Direct-drive mechanism
  • Displacement magnification mechanism

    • The product has a mechanism for mechanically amplifying the elongation of the piezo-electric element.
    • A stroke several times to more than ten times longer than the direct-drive type can be obtained according to the magnification ratio.
    • Feedback control with the built-in displacement sensor also enables the positioning reproducibility to be maintained.
    Displacement magnification mechanism

Applications

  • Semiconductor and FPD inspection
  • HDD Tester
  • Laser optic alignment
  • Interferometer devices
  • Analytical Instruments
  • Nanometer positioning

PSM1H Direct-drive mechanism

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Model Number PSM1H60-020U PSM1H60F-020U PSM1H70-040U PSM1H70F-040U PSM1H80-060U PSM1H80F-060U
Appearance XAxis High durability model XAxis High durability model XAxis High durability model XAxis High durability model XAxis High durability model XAxis High durability model
Travel range ( Closed loop ) 20μm 40μm 60μm
Resolution 1nm 2nm
Repeatability ±1nm ±2nm
Load capacity 10N 30N 10N 30N 10N 50N
Resonant frequency ( 0g Load ) 4300Hz 3110Hz 2740Hz 1780Hz 1600Hz 1080Hz
Built-in displacement sensor Capacitive displacement sensor
Body Material Aluminum Steel Aluminum Steel Aluminum Steel

PSM1L Displacement magnification mechanism

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Model Number PSM1L70-100U
Appearance XAxis High durability model
Travel range ( Closed loop ) 100μm
Resolution 2nm
Repeatability ±2nm
Load capacity 10N
Resonant frequency ( 0g Load ) 930Hz
Built-in displacement sensor Capacitive displacement sensor
Body Material Aluminum

PSM1H Direct-drive mechanism

PSM1L Displacement magnification mechanism

PSM1H Direct-drive mechanism

PSM1L Displacement magnification mechanism

Metal sealed type" and "Resin coated type" piezoelectric actuator

The metal sealed type is designed to be less susceptible to the atmosphere by having a structure in which the piezoelectric element is isolated from the external air. It is more durable to the ambient temperature and humidity than the resin coated type. In addition, this type is less subject to deterioration (life shortening) even if it is applied with a constant voltage for a long time.

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