Nanoform® Xtc

  • Overview +


    Why grind tungsten carbide when Precitech and Micro-LAM enable you to diamond turn it?
    Diamond turning has many advantages over the conventional grinding method
    .

    With demonstrated feed rates up to 6 mm per minute, the finishing of our standard test part takes less than a minute. Additionally, diamond turning is a deterministic process and well-known techniques can be used to quickly manufacture even complex diffractive (kinoform) molds.

    The Nanform Xtc is capable of generating surfaces under 5 nm Sa and 150 nm PV. Compared to traditional grinding, a part requiring minimum post polishing can be made in minutes instead of hours. Also demonstrated to be effective on infrared (IR) materials: Silicon (Si), Zinc Sulfide (ZnS), Calcium Fluoride (CaF2), Germanium (Ge), and Zinc Selenide (ZnSe). Other materials under development: Silicon Carbide (SiC), Sapphire, Glass (BK7).

  • Technical Specifications +


    Machine Base and Control Description
    Machine Base Sealed natural granite base provides exceptional long term machine tool stability
    Machine Type Ultra precision two axis CNC contouring machine
    Vibration Isolation
    FEA optimized dual sub-frames and integral self-leveling TMC MaxDamp® isolators (Optional PEPS® II-VX active vibration cancellation available)
    Control System UPx™ Control System with optional Adaptive Control Technology
    Operating System QNX real time operating system
    Programming Resolution 0.01 nanometer linear
    File Transfer/Storage USB, CD, Ethernet, On-board data storage backup
    Turning Performance Surface Roughness < 5.0 nm Sa, Form Accuracy < 0 .15 micron P-V,
    measured on a 10 mm dia.,15 mm convex sphere, tungsten carbine test part

    Linear Hydrostatic Slideways Description
    Type Hydrostatic bearing slideways with symmetrical linear motor placement and liquid cooling
    Travel X and Z: 220 mm (8.6 in.)
    Maximum Feedrate 4,500 mm/min. (177 in./min.)
    Drive System Linear motor
    Position Feedback Resolution 8 picometers (0.008 nanometers)
    X-axis Straightness Horizontal (critical direction): 0.2 micron (8.0 micro in.)
    full travel 0.05 micron/25 mm (2.0 micro in.)
    Z-axis Straightness Horizontal (critical direction): 0.2 micron (8.0 micro in.)
    full travel 0.05 micron/25 mm (2.0 micro in.)
    Vertical Straightness 0.375 micron (15 micro in.) full travel
    Hydrostatic oil supply system
    Hydro-7 Smart Servo Control, low pulsation pump, optional thermal control
    Workholding/Positioning Spindle High Performance HS 150 Spindle (3 Year Warranty)
    Air Bearing Type Slot-type thrust bearing
    Material Steel shaft/Bronze journal
    Motor Integral brushless DC motor
    Ultimate Load Capacity (@ spindle nose) 136 Kg (300 lbs) @ 100 PSI / 204Kg (450 lbs) @ 150 PSI
    Axial Stiffness 230 N/micron (1,314,000 lbs/in.)
    Radial Stiffness 130 N/micron (743,600 lbs/in.)
    Motion Accuracy Axial/Radial ≤ 15nm (0.6 micro in.)
    Thermal Control Liquid cooled chiller +/- 0.1C Accuracy
    Work Holding Spindle Max speed 10,000 RPM

    Facility Requirements Nanoform® Xtc
    Power 208 or 230 VAC - 3.0 KVA 1 phase - 50/60Hz for DT Machine, 115 or 230 VAC – 1.5KVA 1 phase 50/60Hz for u-LAM System
    Air Supply Typical: 12 SCFM @ 100 PSIG
    Machine Footprint (W x L x H) 929 mm x 2152 mm x 1790 mm (36.6 in. x 84.8 in. x 70.5 in.)

     
  • Application Notes +


    High speed lens array for automotive headlamp mold
    Demonstrate high speed machining of a lens array on nickel plated steel.

    Zinc Sulfide (ZnS) with laser assisted machining
    Utilizing laser assisted machining, demonstrate improved surface finish and cosmetic appearance by reducing visual haze and pullouts on ZnS.

    Micromilling of crystalline material (CaF2)
    Demonstrate the surface finish and flatness results achievable on calcium fluoride using a Freeform® TL machine and a Levicron milling spindle.

    3 Axis (XYX) ruling using PEPS II-VX
    Demonstrate part cutting time, surface finish, and form accuracy achievable by 3 axis ruling on a Freeform® L equipped with PEPS II-VX, an active on machine vibration cancellation and precision leveling system.

    Surface finish and form accuracy results on a steep slope Al asphere
    To demonstrate the surface finish and form accuracy results achievable using the Nanoform® X with HS150 work holding spindle on a steep slope aluminum asphere.

    Infrared silicon diffractive machining
    Demonstrate the capability to manufacture an infrared silicon lens with 15 diffractive zones, meeting surface finish, form accuracy, and absolute radius specifications.

    D-Pocket
    Demonstrate the capability and present key metrology results and process data for a non-axisymmetric D-Pocket used as a registering feature in lens molds, for more accurate indexing.

    Automated form error correction
    Demonstrate automated form error correction of a parabolic component by means of on-machine measurement and analysis. Corrections were made by measuring the part using Precitech’s air bearing LVDT

    High speed germanium machining
    Demonstrate the capability to reduce part cutting time for Infrared (IR) Germanium lenses without sacrificing form accuracy or surface finish.

  • Brochures +