Fabrication of large radii toroidal surfaces by single point diamond turning

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:244174

Cunningham, J P; Marlar, T A; Miller, A C ^[1]

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1. Oak Ridge National Lab., TN (United States); and others

An unconventional machining technique has been developed for producing relatively large radii quasi-toroidal surfaces which could not normally be produced by conventional diamond turning technology. The maximum radial swing capacity of a diamond turning lathe is the limiting factor for the rotational radius of any toroid. A typical diamond turned toroidal surface is produced when a part is rotated about the spindle axis while the diamond tool contours the surface with any curved path. Toric surfaces sliced horizontally, have been used in laser resonator cavities. This paper will address the fabrication of a special case of toroids where a rotating tool path is a circle whose center is offset from the rotational axis of the toroid by a distance greater than the minor radius of the tool path. The quasi-toroidal surfaces produced by this technique approximate all asymmetrical combinations of concave/convex sections of a torus. Other machine configurations have been reported which offer alternative approaches to the fabrication of concave asymmetric aspheric surfaces.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 244174
• Report Number(s): CONF-951056--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
FABRICATION
FOCUSING
LASERS
LENSES
MACHINE TOOLS
MACHINING
TOROIDAL CONFIGURATION