Abstract: A workpiece holding jig for holding a workpiece having a plurality of first dividing lines extending in a predetermined direction and a plurality of second dividing lines formed in a direction intersecting the plurality of first dividing lines on the workpiece holding table of a processing machine for cutting the workpiece along the plurality of first dividing lines and the plurality of second dividing lines, wherein the workpiece holding jig has a plurality of through-grooves corresponding to the plurality of first dividing lines and the plurality of second dividing lines formed on the workpiece, a plurality of suction-holes which are open at the top and formed at positions corresponding to a plurality of areas sectioned by the plurality of first dividing lines and the plurality of second dividing lines of the workpiece and suction-passages that are formed at positions where they do not intersect the plurality of through-grooves and connected to the plurality of suction-holes.

Abstract: A liquid jet machining apparatus including holding means for holding a workpiece, liquid jet application means for applying a liquid jet to the workpiece held by the holding means, and catching means for catching the liquid jet which has penetrated the workpiece. The catching means includes a tank for accommodating a liquid. At the bottom of the tank, a cushioning member is replaceably disposed, and an abrasive is accumulated. The liquid jet having penetrated the workpiece acts on the liquid accommodated in the tank, and then acts on the cushioning member and the abrasive. Wave suppressing means for suppressing generation of waves due to the liquid jet acting on the liquid accommodated within the tank is disposed in an upper portion of the tank.

Abstract: A workpiece holding jig for holding a workpiece having a plurality of first dividing lines extending in a predetermined direction and a plurality of second dividing lines formed in a direction intersecting the plurality of first dividing lines on the workpiece holding table of a processing machine for cutting the workpiece along the plurality of first dividing lines and the plurality of second dividing lines, wherein the workpiece holding jig has a plurality of through-grooves corresponding to the plurality of first dividing lines and the plurality of second dividing lines formed on the workpiece, a plurality of suction-holes which are open at the top and formed at positions corresponding to a plurality of areas sectioned by the plurality of first dividing lines and the plurality of second dividing lines of the workpiece and suction-passages that are formed at positions where they do not intersect the plurality of through-grooves and connected to the plurality of suction-holes.

Abstract: A liquid jet machining apparatus including holding means for holding a workpiece, liquid jet application means for applying a liquid jet to the workpiece held by the holding means, and catching means for catching the liquid jet which has penetrated the workpiece. The catching means includes a tank for accommodating a liquid. At the bottom of the tank, a cushioning member is replaceably disposed, and an abrasive is accumulated. The liquid jet having penetrated the workpiece acts on the liquid accommodated in the tank, and then acts on the cushioning member and the abrasive. Wave suppressing means for suppressing generation of waves due to the liquid jet acting on the liquid accommodated within the tank is disposed in an upper portion of the tank.

Abstract: Disclosed is an improved precision cutting apparatus comprising a chuck table for holding a workpiece, and first and second cutting means each including a spindle unit having a blade attached thereto. The first and second cutting means are series-arranged with their blades opposing a predetermined distance apart, thereby cutting along two traces at one time by moving the chuck table relative to the stationary cutting means. These cutting means need not be allowed to overrun the workpiece while cutting, thus saving extra time required for overrunning which otherwise, would be required as is the case with the parallel-arrangement of two cutting means, and accordingly the dicing can be performed at an increased efficiency.

Abstract: A cutting machine comprising cassette supporting means, disposed in a cassette bearing area, for supporting a cassette accommodating a plurality of workpieces; a chuck table disposed substantially horizontally movably between a chucking area and a cutting area; cleaning means disposed in a cleaning area; cutting means for cutting the workpiece chucked on the chuck table located in the cutting area; and workpiece transport means. The cassette bearing area, the chucking area, and the cleaning area are placed in this order on a first straight line extending in a predetermined direction. The chucking area and the cutting area are placed on a second straight line extending substantially perpendicularly to the first straight line.

Abstract: Disclosed is an improved precision cutting apparatus comprising a chuck table for holding a workpiece, and first and second cutting means each including a spindle unit having a blade attached thereto. The first and second cutting means are series-arranged with their blades opposing a predetermined distance apart, thereby cutting along two traces at one time by moving the chuck table relative to the stationary cutting means. These cutting means need not be allowed to overrun the workpiece while cutting, thus saving extra time required for overrunning which otherwise, would be required as is the case with the parallel-arrangement of two cutting means, and accordingly the dicing can be performed at an increased efficiency.