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

1990-05-22

Terrell, William

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51105LG, 51162, 51217L, 82147, 82151, 82165, 82903, 384118, B24B 13005, B24B 502, B23B 1902, B23B 3300

Patent

active

049265881

ABSTRACT:
For centering optic lenses in a mechanical mounting, in particular during an edge cutting and bevelling, the invention includes a device having a housing (10), a drive (M, R, 14/14', 16/16') for a lower centering spindle 18 and an upper centering spindle 18' with an interpositioning of a torque divider (50). The centering spindles are held in axial alignment by guiding and clamping bearings (22, 22') and carry clamping cups (20, 20'), between which clamping cups the lens (L), which is to be machined, can be clamped. A clamping device (24) is for this purpose connected parallel to a membrane piston (32), which assures a precise stepped moving of the lower centering spindle 18 in an axial direction (A) to the upper centering spindle (18'). A short-stroke piston (38) exists in each pressure cylinder 28, which short-stroke piston (38) is followed by a long-stroke piston (40) having a bore (42) extending therethrough. The lower centering spindle (18) is supported axially through the membrane piston (32) on the crossbar (26) and can be driven independently from the condition of the clamping device (24).

REFERENCES:
patent: 2508009 (1950-05-01), Bonin
patent: 3359045 (1967-12-01), Hsu
patent: 3599377 (1971-08-01), Dartnell
patent: 3732757 (1973-05-01), Cottin
patent: 3750344 (1973-08-01), Raphael
patent: 4434581 (1984-03-01), Spriggs
patent: 4612732 (1986-09-01), Delattre et al.
patent: 4612736 (1986-09-01), Massard et al.
patent: 4809466 (1989-03-01), Junker

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