Abstract: Provided is a laser machine which achieves an enhanced durability against laser beam irradiation. A workpiece transfer device for carrying a workpiece into and out of a workpiece machining chamber, has a turntable device and a partition wall. The partition wall is secured to the top surface of the turntable device, partitioning the top surface of the turntable device into a plurality of workpiece mounting tables on which workpieces can be mounted. The partition wall has: a first plate forming one surface of the partition wall and formed of aluminum alloy; a second plate forming the other surface of the partition wall and formed of aluminum alloy; and a frame for securing the first plate and the second plate in a spaced apart relationship.

Abstract: A three-dimensional laser cutter can be disposed in a machining room. The machining room includes a ceiling and a plate member. The ceiling is provided with a suction port connected to a suction device. The plate member is disposed below the ceiling with a gap therebetween. The plate member forms a space with the ceiling.

Abstract: Provided is a laser machine which achieves an enhanced durability against laser beam irradiation. A workpiece transfer device for carrying a workpiece into and out of a workpiece machining chamber, has a turntable device and a partition wall. The partition wall is secured to the top surface of the turntable device, partitioning the top surface of the turntable device into a plurality of workpiece mounting tables on which workpieces can be mounted. The partition wall has: a first plate forming one surface of the partition wall and formed of aluminum alloy; a second plate forming the other surface of the partition wall and formed of aluminum alloy; and a frame for securing the first plate and the second plate in a spaced apart relationship.

Abstract: A three-dimensional laser cutter can be disposed in a machining room. The machining room includes a ceiling and a plate member. The ceiling is provided with a suction port connected to a suction device. The plate member is disposed below the ceiling with a gap therebetween. The plate member forms a space with the ceiling.

Abstract: A vertical outer circumferential cutter tip, which has an approximate hourglass shape that is narrower at its middle than at its ends, and all of its eight corners are acute angles. Both sides of the vertical outer circumferential cutter tip are relieved at an angle ?. When performing cutting processing upon the side surface of a counter weight with the vertical outer circumferential cutter tip, excessive friction is prevented. The shapes of the upper end portion and the lower end portion of the vertical outer circumferential cutter tip are formed so as to be very gently convexed, and with a relief of an angle ?. Abrasion of the upper end portion and the lower end portion of the vertical outer circumferential cutter tip is prevented before the acute angled corner used for cutting is damaged.

Abstract: A vertical outer circumferential cutter tip, which has an approximate hourglass shape that is narrower at its middle than at its ends, and all of its eight corners are acute angles. Both sides of the vertical outer circumferential cutter tip are relieved at an angle ?. When performing cutting processing upon the side surface of a counter weight with the vertical outer circumferential cutter tip, excessive friction is prevented. The shapes of the upper end portion and the lower end portion of the vertical outer circumferential cutter tip are formed so as to be very gently convexed, and with a relief of an angle ?. Abrasion of the upper end portion and the lower end portion of the vertical outer circumferential cutter tip is prevented before the acute angled corner used for cutting is damaged.