cranf ield precision ecor1664 · cranfield precision has designed a roll turning machine for...
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• Optical quality diamond turning• Outstanding thermal stability• High system stiffness and damping
Ultra-Precision Diamond Turning Drum Roll Manufacture
Cranf ield Precision EcoR1664High Accuracy Diamond Turning Machine
Grinding | Ultra Precision
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CONTACT USCranfield PrecisionWoburn House, 3 Adams Close, Kempston, Bedford, MK42 7JE Phone: + 44 1234 312820 Fax: + 44 637121Email: [email protected]
EcoR machine cross section for minimum roll error
WORKPIECE— Diameter 410 mm (16”)
— Length 1625 mm (64”)
— Weight 680 kg (1500 lb)
CONTROL SYSTEM— Type Cranfield Precision CNC6400
ENVIRONMENTAL CONTROL— Hydrostatic oil Temperature control to 0.01° C
— Microclimate with oil shower temperature control to 0.01°C
www.fivesgroup.com
Diamond turning machine for the production of ultra-precision optical film
SPECIFICATION X Axis (Infeed Axis)
— Stroke 205 mm
— Compensated accuracy <0.5 µm
— Feedback resolution <1.0 nm
— Bearings Hydrostatic oil
— Drive Linear motor
— Thrust 346 N Continuous, 1385 N Peak
— Velocity 50 mm/s
— Acceleration 50 mm/s2
Z Axis
— Stroke 1630 mm
— Compensated accuracy <2.0 µm
— Feedback resolution <1.0 nm
— Bearings Hydrostatic oil
— Drive Linear motor
— Thrust 437 N Continuous, 1748 N Peak
— Velocity 50 mm/s
Machine base and isolation
— Structure Monolithic granite casting with integral
oil containment
— Isolation feet Passive air isolation <2.5Hz
Cranfield Precision has designed a Roll Turning Machine for production level machining of optical quality components.
Using Advanced 3D CAD techniques and FEA the Cranfield Precision EcoR 1664 Roll Turning Machine has been designed to have very good thermal stability, high stiffness and good damping.
The main axis of the machine uses a stepped hydrostatic design with rail positioning that provides virtually zero roll errors in the tool infeed direction drastically reducing the majority of errors experienced on conventional lathes.
EcoR machine plan view