Aerospace

Aerospace Turbine Housing and Stator Vane Assembly

A thin-walled cylindrical housing with integrated radial ports and internal stator vanes, completed in one multi-axis setup to hold coaxiality and profile within 0.005 mm.

This assembly is a thin-walled cylindrical housing integrated with multi-port radial features and internal aerodynamic guide vanes. Conventional 3-axis machine tools need multiple fixtures, which stack positioning error. KGL uses one multi-axis setup to anchor every feature to a single coordinate origin.

The Machining Challenge

Deep internal vane cavities, thin outer walls, radial ports at multiple angles, and sealing grooves all interact. Each re-fixture introduces runout. Handheld tools cannot validate complex internal geometry or multi-angle boss orientations.

How KGL Machines Complex Housings

  • Simultaneous 5-axis machining. Continuous five-axis motion machines internal aerodynamic vanes while maintaining tool contact and surface continuity across thin sections.
  • 3+2 axis positioning. Tool orientations lock at precise angles relative to the outer cylinder, allowing drilling, threading, and counterboring of radial bosses and port flanges in one cycle.
  • One setup, full completion. Outer cylinder walls, seal grooves, internal vane profiles, and radial ports are machined from one origin, keeping coaxiality, circularity, and perpendicularity tight.
  • Inspection. CMM and 3D optical scanning map full GD&T compliance against customer CAD models, with complete reports for every production lot.

Key Specifications

Geometric featureIndustry standardKGL premiumKGL ultra-precision
Position tolerance (multi-surface ports)±0.3 mm±0.015 mm±0.005 mm
Profile tolerance (curved vanes / GD&T)±0.05 mm±0.02 mm±0.008 mm
Coaxiality and cylindricity±0.025 mm±0.01 mm±0.005 mm
Angularity and perpendicularity±0.03 mm±0.015 mm±0.005 mm
Surface roughness (Ra)1.6 μm0.8 μm0.2 μm

Materials and Applications

Materials

  • Titanium Ti-6Al-4V Grade 5
  • Inconel
  • Aluminum AL7075-T6 / AL6061-T6
  • Stainless 17-4 PH / SUS316L / SUS304
  • PEEK / POM engineering polymers

Applications

  • Turbine housings
  • Stator vane rings
  • Auxiliary power units
  • Rocket propulsion components
  • High-pressure pump housings

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