Cutting – Other than completely through work thickness or through work... – Scoring
Patent
1993-11-15
1995-03-21
Seidel, Richard K.
Cutting
Other than completely through work thickness or through work...
Scoring
83940, B26D 308, C03B 33027
Patent
active
053985796
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to glass plate cutting devices.
BACKGROUND ART
In a conventional glass plate cutting device, that is, in a breaking line forming device, a threaded shaft is connected to a moving base to which a cutter head is mounted and also connected through a pulley, a belt, etc., to a rotational output shaft of an electric motor, which is rotated and hence the threaded shaft is rotated to move the moving base, for example, in the direction of X. A threaded shaft is connected through a nut to a bed on which a glass plate is placed. The threaded shaft is connected through a pulley, a belt, etc., to the rotational output shaft of an electric motor, which is rotated and hence the threaded shaft is rotated to move the base, for example, in the direction of Y. Thus, a cutter wheel of the cutter head is moved along a cutting or breaking line to be formed on the glass plate.
In this conventional apparatus, the relatively long threaded shaft is rotated, so that large bending vibrations occur on the threaded shaft in a dangerous speed region. Thus, it is difficult to rotate the threaded shaft at high speed to move the moving base and bed at high speed to thereby improve the working efficiency.
The present invention is made in view of the above problems. It is an object of the present invention to provide a glass plate cutting device which is capable of moving the cutter head at high speed and accurately along a cutting line to be applied on a plate of glass, improving the working efficiency and providing a high quality product.
DISCLOSURE OF THE INVENTION
According to the present invention, the above objects are achieved by a glass plate cutting device including a bridge frame supported at its opposite ends so as to be movable in a Y direction, the bridge frame having an X direction linearly moving means for moving a cutter head linearly in the X direction, a pair of ball screw nuts each attached rotatably to a respective one of both ends of the bridge frame, a pair of ball screws extending in a Y direction with each ball screw being screwed in a respective one of the ball screws, and Y direction linearly moving means for synchronously rotating both the nuts to move the bridge frame in the Y direction.
According to the present invention, the above objects are also achieved by a glass plate cutting device including a bridge frame supported at its opposite ends so as to be movable in a Y direction, the bridge frame having an X direction linearly moving means for moving a cutter head linearly in the X direction, a pair of ball screw nuts each attached rotatably to a respective one of both ends of the bridge frame, a pair of ball screws extending in the Y direction with each ball screw being screwed in a respective one of the ball screws, and Y direction linearly moving means common to both the ball screw nuts for synchronously rotating both the nuts to move the bridge frame in the Y direction.
In the present glass plate cutting device, the Y direction linearly moving means rotates both the ball screw nuts synchronously to thereby move the bridge frame in the Y direction while the X direction linearly moving means moves the cutter head in the X direction. The cutter head is moved at high speed in an X-Y plane along the configuration of the glass plate on which a cutting line is formed.
According to the present invention, the above objects are achieved by the above glass plate cutting device which includes a further ball screw extending in the X direction provided on the bridge frame, a further ball screw nut screwed over the further ball screw and attached rotatably to the X direction linearly moving means, whereby the further ball screw is rotated by the X direction linearly moving means to move the cutter head in the X direction.
According to the present invention, the above objects are achieved by a glass plate cutting device including a bridge frame which supports a cutter head and supported at opposite ends of the bridge frame so as to be movable in the Y direction, a pair o
REFERENCES:
patent: 3978748 (1976-09-01), Leslie et al.
Bando Kiko Co., Ltd.
Seidel Richard K.
Woods Raymond D.
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