Abstract: A circular sawing machine includes a base, a saw seat movable relative to the base, and a link mechanism pivotally mounted between the base and the saw seat, so that the saw seat is linearly movable relative to the base. Thus, the link mechanism can absorb vibration or shock during operation of the circular saw blade so as to provide a shock-absorbing effect the circular saw blade, so that the circular saw blade can be operated smoothly and stably.

Abstract: A circular sawing machine includes a base, a saw seat movable relative to the base, and a link mechanism pivotally mounted between the base and the saw seat, so that the saw seat is linearly movable relative to the base. Thus, the link mechanism can absorb vibration or shock during operation of the circular saw blade so as to provide a shock-absorbing effect the circular saw blade, so that the circular saw blade can be operated smoothly and stably.

Abstract: A string saw includes a housing, and an air box. The housing includes a first casing and a second casing combined with each other. The air box is mounted in the housing and has an inside formed with a receiving chamber communicating with the storage space of the first casing, so that the cut chips during the sawing process can be introduced from the storage space of the first casing into the receiving chamber of the air box. Thus, the string saw can provide the dust collection and chip drainage function.

Abstract: A push cutting device for a table saw includes seat board adapted to be mounted on a working table of a base of the table saw, a slide plate reciprocally slidably mounted on a top face of the seat board and a slide board reciprocally slidably mounted on a top face of the slide plate. The seat board, the slide plate and the slide board are longitudinally slidably mounted to one another relative to the cutting direction of the table saw such that the cutting stroke of the table saw is elongated, and the cutting effect and the cutting quality are promoted.

Abstract: A table saw having a rotation structure includes a work table, a suspension rod, a swing seat, a rotation seat, a push lever, two torsion springs, and a threaded rod. When the threaded rod is rotated, the push lever is displaced horizontally to push the rotation seat to rotate, so that the circular blade is moved upward, thereby adjusting the cutting height of the circular blade. Thus, the push lever is urged by the elastic force of the two torsion springs, so that the push lever is closely and rigidly combined with the threaded rod, thereby eliminating the clearance between the push lever and the threaded rod, so that the cutting height of the circular, blade is adjusted exactly and precisely, thereby enhancing the cutting efficiency of the table saw.

Abstract: A table saw having a rotation structure includes a work table, a suspension rod, a swing seat, a rotation seat, a push lever, two torsion springs, and a threaded rod. When the threaded rod is rotated, the push lever is displaced horizontally to push the rotation seat to rotate, so that the circular blade is moved upward, thereby adjusting the cutting height of the circular blade. Thus, the push lever is urged by the elastic force of the two torsion springs, so that the push lever is closely and rigidly combined with the threaded rod, thereby eliminating the clearance between the push lever and the threaded rod, so that the cutting height of the circular blade is adjusted exactly and precisely, thereby enhancing the cutting efficiency of the table saw.

Abstract: The present invention relates to a catch structure of a rotary cover plate of a circular sawing machine. A rotary cover plate is rotatably mounted on an upper blade guard of a circular sawing machine, to cover a semi-circular hole of the upper blade guard. A lower blade guard is pivoted on the rotary cover plate, so that the lower blade guard may be rotated relative to the rotary cover plate. The rotary cover plate has an inner side protruded with a first catch end which may be stopped and positioned on a side wall of the semi-circular hole. The rotary cover plate has an outer side protruded with a second catch end which may be stopped on a lug of a bottom edge of the lower blade guard.