Method of and apparatus for working structure

Details Method of and apparatus for working structure Method of and apparatus for working structure

2011-01-04

2011-01-04

Fridie, Jr., Will (Department: 3724)

Turning

Process of turning

C082S117000

Reexamination Certificate

active

07861624

ABSTRACT:
A mold material is mounted on a mold material mount portion of a cutting/working apparatus and rotated about the C-axis serving as the rotation center while a cutting tool is driven and moved in directions X and Y. Then, a desired position of the mold material is cut with the cutting tool at a relatively formed desired cutting speed and elliptically vibrated/cut with the cutting tool, for forming a Fresnel lens molding cavity having an opening of a desired shape and a working surface (concave surface, for example) of a desired shape. The productivity of an optical component mold employed as the structure can be efficiently improved when the mold for molding an optical component such as a Fresnel lens is worked by cutting the mold material employed as a workpiece with the cutting tool in a four-spindle lathe-type cutting/working apparatus including X-, Y-, Z- and C-axes of rotation.

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Sornsuwit et al., The Japan Society of Mechanical Engineers, Series C, vol. 43, No. 1, 2000, pp. 164-169, XP-002472951.

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