How is a single-chip longitudinal saw made?
Single-piece longitudinal saw, including base, shoe chain feeding mechanism and driving device, upper seat, pressing base, saw shaft assembly and driving device, saw blade, the top plane of the shoe chain feeding mechanism is feasible to transport wood through the center of the platform on the upper part of the base for feeding motion, the upper seat is fixed on the base, and the inner side of the upper seat is equipped with vertical guide rails, the press base has a guide groove and cooperates with the guide rail for lifting movement. A screw nut pair is also arranged between the upper base and the Press base to control lifting adjustment. The press base is equipped with a press wheel, the press wheel is partially exposed from the bottom of the press material base for pressing the wood on the platform which is transmitted to the base through the chain feeding mechanism. Its feature is that the saw shaft assembly includes a shaft sleeve and a saw shaft, the saw shaft is arranged in the shaft sleeve through the bearing pivot, and the upper seat is equipped with a mounting shaft parallel to the shaft sleeve, and the mounting shaft runs through the mounting ear of the side wall of the shaft sleeve so that the shaft sleeve pivot is installed in the upper seat, the side wall of the shaft sleeve is also provided with a connecting ear opposite to the installation ear, and the connecting ear is hinged with the lifting screw set on the upper seat, so that the lifting screw drives the shaft sleeve to swing up and down, the lifting screw is equipped with the hand wheel which drives the lifting and pivoting on the upper seat, and the main motor of the driving device is pivoting in the base, between the shaft sleeve and the main motor, there is also a hanging plate which can keep a fixed center distance between the saw shaft and the output shaft of the main motor. To adjust the height of the saw blade and the saw shaft, you only need to rotate the handwheel, which drives the lifting screw to rise or fall, thus driving the shaft sleeve to swing up and down in the upper seat, and the longitudinal saw machine achieves the purpose of adjusting the height of the saw blade. At the same time, because the center distance between the shaft sleeve and the main motor is determined by the hanging plate, when the shaft sleeve is lifted, the main motor also rises and falls, which does not affect its transmission. The technical scheme can also be further improved through the following technical measures. One end of the saw shaft is equipped with a chuck that can fix the saw blade and two symmetrical centripetal thrust bearings, and an outer spacer sleeve is set between the outer rings of the two centripetal thrust bearings, the two outer rings and the outer spacer sleeve are located between the front cover of the shaft sleeve and the inner wall of the shaft sleeve. The inner spacer sleeve is arranged between the inner rings of the two centripetal thrust bearings, and the saw shaft is also equipped with spacer sleeve, washer and locking nut, the locking nut pushes the two inner rings and the inner spacer sleeve to the shoulder of the saw shaft through the washer and the spacer sleeve, and the other end of the saw shaft is equipped with a pulley and a bearing of the whole heart, the outer ring of the centripetal bearing is located between the back cover of the shaft sleeve and the stepped surface of the inner wall of the shaft sleeve. The pulley pushes the inner ring of the centripetal bearing against the shoulder of the saw shaft through a shaft ring, and the lifting plate is sleeved on the back cover. The structure can improve the machining accuracy.