Method and apparatus for cutting plate-shaped brittle material

Details Method and apparatus for cutting plate-shaped brittle material Method and apparatus for cutting plate-shaped brittle material

1993-06-30

1995-03-21

Phan, Hien H.

Severing by tearing or breaking

Methods

With preliminary weakening

225 965, C03B 3303

Patent

active

053988574

ABSTRACT:
To assure that a plate-shaped brittle material is exactly cut into two plate pieces, a jig having a thread-shaped projection secured thereto in conformity with a predetermined pattern positionally coincident with a cut groove formed in the plate-shaped brittle material, an elastic member located on the cut groove side of the plate-shaped brittle material, and a plate-shaped brittle material to be cut into two plate pieces are placed on a table of a press machine one above another, and subsequently, a predetermined intensity of pressing power is applied to the jig from above by operating a pressing machine. Alternatively, a jig having a thread-shaped projection secured thereto, an elastic member located on the opposite side relative to the cut groove side of the plate-shaped brittle material, and a plate-shaped brittle material to be cut into two plate pieces may be placed on the press table one above another. Otherwise, a pair of jigs each having a thread-shaped projection secured thereto, a pair of elastic members one of which is located on the cut groove side of a plate-shaped brittle material and other one of which is located on the opposite side relative to the cut groove side of the plate-shaped brittle material, and a plate-shaped brittle material to be cut into two plate pieces may be placed on the press table one above another.

REFERENCES:
patent: 2584851 (1952-02-01), Dunipace
patent: 3371833 (1968-03-01), Sutton
patent: 3532260 (1970-10-01), Augustin et al.
patent: 3559855 (1971-02-01), Barnett et al.
patent: 3584773 (1971-06-01), Grove et al.
patent: 3770173 (1973-11-01), Carothers et al.
patent: 4175684 (1979-11-01), Butler
patent: 4538588 (1985-09-01), Nyman
patent: 5016800 (1991-05-01), Sato et al.
A collection of treatises edited by The Japan Mechanical Engineering Association, No. 513, vol. 55, Edition C, published on May, 1989.

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