Optical Parts／Lens Mold, Optical
Lens Mold, Optical
Various Molds such as Spherical / Aspherical Lens, Camera Lens, etc. / Ultra-Precision Cutting Tool UPC-R
Fresnel Lens Molds, etc. / Ultra-Precision Cutting Tool UPC-T
・The cutting edge is uniformly finished in high quality, achieving a surface roughness in the order of nanometers. ・A record of the profile of the cutting edge arc is attached to ensure thorough quality control. ■Features ・Molds of pickup lenses for BD, Molds of lenses for digital cameras, Molds of camera lenses for cell phones, PC and tablets, Spherical / Aspherical mirrors, etc. ■Applications Outstanding Performance in Ultra-Precision Cutting This is a ultra-precision cutting tool for molds of products that require very high accuracy such as spherical and aspherical lens and camera lens. The cutting edges polished precisely by our originally developed technology cut workpieces on the nanometer order to produce very precise micro shapes.
Ideal for Fine Grooving The cutting edge ridge is free of chipping and waviness. It is uniform and very sharp. ・The cutting edge is uniform and extremely sharp, free from chipping and undulation. ■Features
・Fresnel lens molds, LCD light guide plate molds ■Applications
■Machining Examples
Cutting Edge Ridge
Cutting Edge Ridge
Cutting Edge
Close-Up of Cutting Edge
UPC-RT
UPC-RR
40° L
Rake Face
Clearance
R
R
0.5
Cutting Edge UPC-T
Micro Crack
Molding of LCD Display Optical Waveguide
W+0.5
Corner Radius:５ µｍ
60°
■Dimension and Highest Accuracy
W
Standard Sizes ① L：51 W：□6.35 ② L：60 W：□8
Cutting Edge of UPC
Cutting Edge Having Fine Irregularities
α
α
Tool Edge Angle (θ) min 20°
Angle Tolerance
Leading Edge Width (W)
Clearance Angle (α)
Rake Angle (β)
Type
β
Ultraprecision
±6’
min 0.2 µm
UPC-T
0°〜15°
−5°〜10°
Precision Sharp Corner * Dimensions and accuracy vary depending on the combination of elements.Contact CKD for more information. min 45° ±15’
■Dimension and Highest Accuracy
・ Sharp Cutting Edge
α
Nanometer order ultra-fine machining possible Micro feed to prevent workpiece deformation to realize damage-free cutting ・ Chipping-Free Cutting Edge No irregularities transferred to workpieces to produce mirror finish. Mirror finishing below Ra 5 nm possible
Tool Edge Angle θ
Contour (µm)
Corner Radius (R)
Tool Width （RR）
Clearance Angle (α)
Rake Angle (β)
Type
θ ≤ 90° θ ≤ 120° θ ≤ 150°
Ultraprecision
0.05 0.1 0.25 0.5
0.20 0.002〜
UPC-R
−30°〜10°
Hardened Steel, Carbide and Glass Material Molds / Elliptical Vibration Cutting Tool UPC
200 min 20° 0.5〜5 0°〜20°
Precision 1 *Dimensions and accuracy vary depending on the combination of elements. Contact CKD for more information.
Mirror Finishing of Hardened Steel and Glass A combination of an elliptical vibration unit from Taga Electric Co., Ltd. and A.L.M.T.'s UPC tool enables ultra-precision cutting of hardened steel, cemented carbide and glass materials, which are difficult to machine with conventional tools. 【Features of EL-50Σ】 •High frequency around 41 kHz makes 1 µm or more elliptical vibration. •Ultra precise technique of automatic tracking for elliptical vibration route with lower than 1 nm precision. •Small vibrator can be attached to ultra precision machine or machining center. •Work with AC 100 V and no need for special installation work. 【Features of Elliptical Vibration Cutting】 •Mirror finish cutting of harden steel and stainless steel is possible. •Stable mirror finish cutting of cemented carbide and glass. •High accurate corner cutting. ■Features
Various Molds such as Infrared Lens Molds / Ultra-Precision Cutting Tool UPC-R
・The cutting edge height (center height) stays the same on any conical surface. ・The tool has a sharp cutting edge of nanometer accuracy. ・Cutting edge contour accuracy of 0.05 µm is also possible. ・This tool can also be used for machining calcium fluoride and cemented carbide. ■Features ・Infrared sensor lens, Night vision camera lens, Germanium lens, Silicon lens, Calcium fluoride lens, Cobalt-less carbide mold ■Applications Outstanding Performance in Fine Machining of Hard and Brittle Materials The tool life has been a serious issue in machining germanium and silicon lenses used for infrared sensors and night vision lenses. The tool life has been extended significantly by applying our original minute cutting edge treatment to the single crystal diamond cutting edge.
Product of Taga Electric Co., Ltd. Ultrasonic Vibration Cutting Device EL-50Σ
■EL-50jw
■Image of Ultrasonic Elliptical Vibration Cutting
■UPC-R for EL-50Σ
Mirror-Finish Boring (Min. Bore Diameter φ5)
UPC Cutting Edge
Chips
■Machining Examples
Workpiece Tool Specification Conditions
Infrared Transmission Lens, φ95 mm Germanium Lens Corner Radius 1.5 mm, Clearance Angle 10° Rotational Speed 2,000 min -1 , Feed Per Revolution 1.75 µm/rev, Stock Removal 1.5 µm
Ultrasonic Elliptical Vibration Work Material Cross-Section
■UPC Cutting Edge for Infrared (IR) Lens and Carbide Molds
【Results】
■EL-50jｚ Hale Mirror Machining in Machining Center
■Process Application for Mirror Finish of Harden Steel (STAVAX 52HRC)
Tool Life
250 200 150 100 50 0
Workpiece: STAVAX
2.4 Times
1〜3 µm
【加工結果】
Negative Rake Face
Clearance
Infrared Lens
Conventional Tool
Uniform Negative Rake Face Provided on Cutting Edge
039
040
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