Glass plate cutting device

A glass plate cutting device comprising:

• an elongated bridge frame supporting a cutter head mounted on said bridge frame for movement in an X direction, said bridge frame having opposite ends and being supported at said opposite ends for movement in a Y direction, said cutter head having a cutter wheel for forming a cutting line on a glass plate, and an air-pressing means for air-pressing said cutter wheel against the glass plate,
• a pair of ball screw nuts each attached rotatably to a respective one of said opposite ends of the bridge frame,
• a pair of ball screws extending in the Y direction, each ball screw being screwed in a respective one of the ball screw nuts,
• common moving means for synchronously rotating in common said pair of ball screw nuts to move the bridge frame in the Y direction, said moving means including a single motor disposed on said bridge frame, and transmitting means for transmitting to said pair of ball screw nuts a rotating force exerted by said single motor, and
• moving means for moving said cutter head linearly in the X direction, the X and Y directions being orthogonally related and lying in a horizontal plane.

A glass plate cutting device comprising:

• an elongated bridge frame having opposite ends and supported at said opposite ends for movement in a Y direction,
• a cutter head mounted on said bridge frame for movement therewith and movable along said bridge frame in an X direction, said cutter head having a cutter wheel for forming a cutting line on a glass plate, and an air-pressing means for air-pressing the cutter wheel against the glass plate,
• first moving means for moving said cutter head linearly in the X direction,
• a pair of ball screw nuts each attached rotatably to a respective one of said opposite ends of the bridge frame,
• a pair of ball screws extending in the Y direction, each ball screw being screwed in a respective one of the ball screw nuts, and
• second moving means common to said pair of ball screw nuts for synchronously rotating said pair of ball screw nuts to move the bridge frame in the Y direction, the X and Y directions being orthogonally related and lying in a horizontal plane.

A glass plate cutting device comprising:

• an elongated bridge frame having opposite ends and supported at said opposite ends for movement in a Y direction,
• a cutter head mounted on said bridge frame for movement therewith and movable along said bridge frame in an X direction, said cutter head having a cutter wheel for forming a cutting line on a glass plate, and an air-pressing means for air-pressing the cutter wheel against the glass plate,
• a ball screw nut attached rotatably to the cutter head,
• a ball screw extending the X direction on the bridge frame, and screwed in the ball screw nut,
• first moving means for rotating said ball screw nut to move said cutter head linearly in the X direction, and
• second moving means for moving the bridge frame in the Y direction, the X and Y directions being orthogonally related and lying in a horizontal plane.

A glass plate cutting device comprising:

• a cutter head for cutting a glass plate,
• an elongated bridge frame supporting said cutter head, said bridge frame having opposite ends and being supported at said opposite ends for movement in a Y direction, said cutter head being movable in an X direction on and along said bridge frame, said cutter head having a cutter wheel for forming a cutting line on a glass plate, and air-pressing means for air-pressing said cutter wheel against said glass plate,
• first moving means for moving said cutter head in said X direction,
• a pair of ball screw nut means attached rotatably to each end of said bridge frame,
• ball screw means extending the Y direction and being screwed into respective ball screw nut means, and
• second moving means for synchronously rotating said pair of ball screw nut means to move said bridge frame in the Y direction, the X and Y directions being orthogonally related and lying in a horizontal plane.