Development of Ultra-precision Machining Technology

Purpose

Instrument Technology Research Center (ITRC) has devoted to limited and diversified ultra-precision components fabrication for more than 30 years, and established various aspheric optics fabrication units, precision centering machines, and micro lens and diffractive optical element (DOE) machining devices in the past years. To match up the massive growth of the optical industrial in Taiwan, ITRC introduced a new Precitech 5-axis ultra-precision machine.

Specifications & Features

Stroke: X-axis 350 mm, Y-axis 150 mm, Z-axis 250 mm, B-axis 360°, C-axis 360°
Position accuracy: linear axis ≤ ±0.2 µm, rotary axis ≤ ±10arc-sec
Wokspindle (SP-150): maximum speed 5000 rpm, load capacity 57 kg, runout ≤ 50 nm
Grinding Spindle (SP-75FF): maximum speed 10,000 rpm, runout ≤ 50 nm
Controller: UPx
Fast tool servo: bandwidth 700 Hz, stroke 70 µm

Multi-axis Ultra-precision Machine

Fast Tool Servo Machining

Flycutting

Ultra-precision grinding

Applications

Single point diamond turning:

Spherical and aspherical surfaces (rotational symmetric components)
Machining material: non-ferrite material, such as: Al, Cu, Electroless nickel and plastic materials
Applications: plastic lens, metal mirror and injection mold

Diamond grinding:

Spherical, aspherical and 3D freeform surfaces
Machining materials: brittle material, such as: glass, quartz, ceramic or steel
Applications: f-θ lens/mold, mold for glass molding

Large aperture off-axis parabolic mirror (single point diamond turning)

Mold for LCD backlight unit (Flycutting)

Off-axis parabolic mirror (Flycutting)

Lens array (FTS machining)

ITRC logo (FTS machining)

Contact

Wei-Yao, Hsu
E-mail: hsuweiyao@itrc.org.tw