Device for centering of optic lenses in a mechanical mounting, i

Details Device for centering of optic lenses in a mechanical mounting, i Device for centering of optic lenses in a mechanical mounting, i

1988-12-23

1990-07-17

Terrell, William

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51162, 51217L, 51217T, 82147, 82151, 82170, 384 1, 384118, B24B 504, B24B 914, B23B 1902, B23B 2304

Patent

active

049412914

ABSTRACT:
For centering optic lenses in a mechanical mounting, in particular during edge cutting and bevelling, a device with a housing (10) is provided, in which housing a split drive shaft (14, 14') with a torque divider (50) is supported. Two centering spindles (18, 18') are aligned in an axial direction (A) and are in this manner driven by a motor. The ends of the mutually adjacent ends of the centering spindles carry clamping cups (20, 20') between which a lens (L) can be aligned and clamped. An air bearing is provided at least for the lower clamping spindle. The air bearing can be pressure loaded by paraxial and/or graduated-ring-shaped channels (90) with control openings (A, B). In particular, two diametrically opposed air-cushion fields can be loaded with pressure. The clamping spindle (18) can then be smoothly axially moved by a membrane piston (32) permitting thereby a very finely dosable feed movement (FIG. 3).

REFERENCES:
patent: 2508009 (1950-05-01), Bonin
patent: 2660484 (1953-11-01), Gerard et al.
patent: 2663977 (1953-12-01), Gerard et al.
patent: 3143382 (1964-08-01), Ertaud et al.
patent: 3359045 (1967-12-01), Hsu
patent: 3599377 (1971-08-01), Dartnell
patent: 3750344 (1973-08-01), Raphael
patent: 4434581 (1984-03-01), Spriggs
patent: 4612736 (1986-09-01), Massard et al.
patent: 4809466 (1989-03-01), Junker

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