Ultra-precision diamond machining systems from Apex UPT deliver nanometer-level surface finish and sub-micron form accuracy for optical, infrared, and semiconductor components. Built around single point diamond turning technology, our 3-axis, 4-axis, and 5-axis machines help manufacturers produce aspheric optics, freeform surfaces, and micro-structured parts with stable, repeatable precision.
Single point diamond turning uses a natural diamond tool to cut optical-grade surfaces directly, often reducing or eliminating secondary polishing. Our machines combine air or hydrostatic bearing spindles, vibration-isolated bases, and temperature-controlled structures to hold nanometer surface finish and tight form accuracy. Every system is verified with laser interferometer measurement before delivery.
Axis count should follow part geometry and throughput. The SGDT350 3-axis machine suits rotationally symmetric aspheres, spherical lenses, and flat mirrors. The SGDT350G 4-axis system extends capability toward off-axis and non-rotationally symmetric features. For freeform optics, complex microstructures, and micro-milling, the SGDT350F 5-axis platform offers the greatest geometric flexibility.
Parameter | SGDT350 | SGDT350G | SGDT350F |
|---|---|---|---|
Published axis layout | 3 axes: X / Z / C | 4 axes: X / Z / B / C | 5 axes: X / Y / Z / B / C |
Linear travel | X: 350 mm; Z: 300 mm | X: 350 mm; Z: 300 mm | X: 350 mm; Y: 150 mm; Z: 300 mm |
Added motion compared with SGDT350 | Base X / Z / C arrangement | B rotary axis | Y linear axis and B rotary axis |
Published machining capacity* | Ø650 mm × 300 mm | Ø650 mm × 300 mm | Ø650 mm × 300 mm |
Linear positioning repeatability** | ≤0.5 μm | ≤0.5 μm | ≤0.5 μm |
Configuration review focus | Suitability of X / Z / C, tooling and workholding | Need for B-axis orientation; tool access and process plan | Need for Y travel and B orientation; clearance and optional modules |
Model details |
Usable workpiece space is assessed with the fixture, tool and available clearance. Repeatability follows the agreed test conditions. Axis count describes the layout; it does not by itself establish simultaneous interpolation, guaranteed surface capability or workpiece accuracy.
These systems serve infrared optics, defense and aerospace, semiconductor equipment, medical optical components, and ultra-precision mold manufacturing. Compatible materials include copper, aluminum, and electroless nickel, infrared crystals such as germanium, silicon, and zinc sulfide, and polymers such as PMMA. Explore our application-specific solutions or review customer case studies for typical configurations.
Production follows ISO-certified quality management, with factory acceptance testing, OEM/ODM customization, and worldwide installation and after-sales support. Learn more about Apex UPT or download technical documents for detailed specifications.
They are optical components machined directly with a single natural diamond tool on an ultra-precision lathe, producing mirror-quality surfaces and accurate aspheric or freeform profiles in metals, crystals, and polymers.
Diamond turning is a precision process in which a diamond tool cuts a workpiece on an air-bearing lathe, achieving nanometer roughness and micron-level form accuracy without extra finishing.
It removes material with one cutting edge to create turned profiles. With a diamond edge, it finishes optical surfaces, molds, and medical components.
It is machining in which one cutting edge engages the workpiece, as in turning and boring, giving direct control over surface form.
Single-point tools have one edge and suit precise turning. Multi-point tools, such as milling cutters, have several edges and remove material faster with less form control.
Aluminum nitride is a hard, brittle ceramic, so conventional diamond turning is generally impractical. Grinding and lapping are typically used, and feasibility depends on the grade.
Sintered silicon carbide wears diamond tools rapidly and is usually ground and polished. Silicon-based claddings on silicon carbide are often diamond turned.
Need help selecting the right axis configuration for your parts? Contact our engineers to submit an RFQ, request technical specifications, or schedule a process evaluation.
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