Fast Tool Servo

fast tool servo 5000
  • FTS 5000 +


    FTS systems provide a rapid method to fabricate freeform surfaces including: light management micro-structures, toric optics, and mechanical features in contact lenses, lens arrays and laser collimators. FTS cutting is typically 10-15 times faster than other servo tool cutting methods (e.g. XZC machining).

    With the FTS 5000 Precitech is once again defining the state of the art of ultra-precision machining. It addresses the emerging needs of many new markets, including Head-up-displays (HUD) and Virtual Reality (VR).

    Five millimeters of travel and an unprecedented 40 g’s of continuous acceleration are a combination unmatched in the industry. This translates into significantly faster production of higher-complexity parts.

    At the same time the FTS 5000 tractor fits in a compact package the size of a standard tool holder, saving machine space. It integrates seamlessly with current Precitech machining centers.


    Benefits
    • Make parts 3x faster than competitive products with unprecedented 40 g’s of acceleration
    • Save valuable tool space with compact footprint (equal to a standard tool holder)
    • Expand your product portfolio with 5 mm of travel
    • Ease of use enabled by seamless integration with the machine controller via the FastCom III controller

    Key Specifications
    Typical performance Surface roughness < 4 nm Sa
    Form accuracy < 0.3 μm P-V
    Continuous acceleration 400 m/sec2 (40 g's)
    Travel 5000 μm
    Typical acceleration 2000 μm @ 100 Hz
    1000 μm @140 Hz
    250 μm @ 280 Hz
    100 μm @ 440 Hz
  • FTS 70/35 +


    The FTS 35 has 35 μm of usable stroke and a maximum operating frequency of 1 kHz. The FTS 70 has a 70 μm stroke and a max operating frequency of 900 Hz. Tool movement is actuated by a piezo ceramic device and position feedback is provided by capacitive gage at 0.5 nm resolution. The FTS 70/35 use “one to one” piezo movement to tool movement technology with high stiffness flexures maximizing tool moment stiffness.


    Key Specifications
    Model FTS 70 FTS 35
    Travel 70 µm ≈ 100 Hz 35 µm ≈ 140 Hz
    Peak Acceleration 3000 m/s2 5000 m/s2
    Typical Form  < 0.3 µm PV < 0.2 µm PV
    Typical Finish < 3 nm Ra < 2 nm Ra
    Servo Band Width 900 Hz 1000 Hz
    FastCom Control System
    Operating System Windows 7
    DSP Sharc ADSP
    Typical Position Command Update Rate 20 - 35 kHz
    D to A Converter 18 bit ultra-low noise
    Update time jitter < 50 ns
    GUI Windows based UPx style
    Two Optional Packages
    Fiducial Library - programming objects defining the cutting path for frequently used fiducial (alighnment) marks
    20th order aspheric lens arrays with blend zones and on-the-fly tool compensation
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