Cutting – With means to convey work relative to tool station – With work-constraining means on work conveyer
Patent
1983-05-16
1985-05-21
Meister, James M.
Cutting
With means to convey work relative to tool station
With work-constraining means on work conveyer
51101LG, 83565, 83916, 409104, 409112, 409122, 409123, B26D 500
Patent
active
045178704
ABSTRACT:
A machine for manufacturing a templet for edge grinding a spectacle lens according to the shape of an opening in a spectacle frame designed to hold the lens, comprises a spectacle frame holder supported on a housing. A copying sensor is mounted on the housing for rotation about the axis of the opening and for rectilinear displacement, the sensor sensing the shape of the opening upon rotation thereof. A blank holder is rotatable synchronously with the sensor and a sliding carriage is mounted on the housing for rectilinear displacement with respect to the blank holder, the sliding carriage carrying a cutting tool for cutting the blank to provide said templet. A plunger is rectilinearly displaceable with the copying sensor and synchronously controls the rectilinear displacement of the sliding carriage and cutting tool, the plunger having an axis extending in the direction of the axis of the spectacle frame opening. A sensing element is mounted in the housing coaxially with the plunger and spaced therefrom for sensing the distance between the plunger and the sensing element, and a mechanical motion transmission connects the sensing element to the sliding carriage. A drive motor for rectilinearly displacing the sliding carriage is connected to an electronic processing unit and to the sensing element, the processing unit controlling the rotational speed of the drive motor so that the distance between the plunger and the sensing element remains constant.
REFERENCES:
patent: 2739511 (1956-03-01), Rafart
patent: 3144798 (1964-08-01), Leibinger
patent: 3170374 (1965-02-01), Clar
patent: 3555739 (1971-01-01), Novak
patent: 3786600 (1974-01-01), Bloxsom
patent: 3838623 (1974-10-01), Schell
Breitfeld & Schliekert GmbH
Kelman Kurt
Meister James M.
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