摘要:
A scroll sawing machine includes a first transmitting shaft driven by an output shaft of a motor, a second transmitting shaft rotatable to move a blade-driving member in an upright direction so as to enable a saw blade to perform reciprocating movement, and a speed ratio varying device disposed to couple the transmitting shafts. The device includes two pitch-variable first and second pulleys mounted on the transmitting shafts, a belt trained on the pulleys, and a control unit operable to move a movable disc of the first pulley toward or away from a fixed disc of the first pulley so as to vary the radial distances between the belt and each of the transmitting shafts, thereby varying the speed ratio of the second transmitting shaft to the first transmitting shaft.
摘要:
A scroll sawing machine includes a first transmitting shaft driven by an output shaft of a motor, a second transmitting shaft rotatable to move a blade-driving member in an upright direction so as to enable a saw blade to perform reciprocating movement, and a speed ratio varying device disposed to couple the transmitting shafts. The device includes two pitch-variable first and second pulleys mounted on the transmitting shafts, a belt trained on the pulleys, and a control unit operable to move a movable disc of the first pulley toward or away from a fixed disc of the first pulley so as to vary the radial distances between the belt and each of the transmitting shafts, thereby varying the speed ratio of the second transmitting shaft to the first transmitting shaft.
摘要:
A frame saw for sawing a relatively thick piece of wooden feed stock simultaneously into a plurality of thinner pieces of wood, and including a feed assembly for continuously feeding the stock from an upstream input position to a downstream output position, and a plurality of closely spaced-apart parallel reciprocable saw blades positioned intermediate the input position and the output position for sawing the stock into thinner pieces of stock as the stock is moved by the feed assembly relative to the blades. A drive assembly is operatively connected to the blades for driving the blades in a reciprocating motion comprising alternate cutting and non-cutting strokes. A linear offset motion assembly is provided for moving the reciprocating blades alternately upstream and downstream into linearly-offset cutting and non-cutting positions relative to the stock. An electronic controller such as an encoder is provided for coordinating the reciprocating movement of the blades and the linear offset motion of the blades to thereby permit continuous movement of the stock while the blades are in both the cutting and non-cutting positions and strokes.
摘要:
A table saw capable of adjusting its cutting angle comprises a base, a suspension arm pivotally mounted on said base and provided at two distal ends thereof with a mounting seat respectively, two adjustment members detachably fastened to mounting seat respectively, four support rods connected to said two adjustment members respectively, two saw racks sleeved onto said four support rods respectively, and an arch saw movably installed in said saw racks for reciprocating motion between said saw racks within a distance. The mounting seats each has a mounting hole and a first positioning unit below the mounting hole. The adjustment members each has a second positioning unit adapted for coupling to the first positioning unit for enabling said adjustment member to be secured to the mounting seat in a determined posture, and a through hole above the second positioning unit, through which a screw bolt is inserted and fastened to the mounting hole of the corresponding mounting seat.
摘要:
A scroll saw includes a machine base and a table mounted pivotally on the machine base for placement of a workpiece to be sawn. The table is rotatable about a horizontal axis that extends in a longitudinal direction of the machine base. A C-shaped blade-holding arm is fixed on the machine base, and has upper and lower arm portions that extend in the longitudinal direction of the machine base. A saw blade is held between front ends of the upper and lower arm portions of the blade-holding arm, and extends perpendicularly through the table. A saw-blade driving device includes a motor which is disposed within the machine base, and which is provided with a motor shaft. The motor shaft extends in the longitudinal direction of the machine base. A linkage interconnects the motor shaft and the saw blade so as to reciprocate the saw blade relative to the blade-holding arm.
摘要:
A cake slicer that, during operation, cuts in a truly linear fashion and efficiently transfers loads generated in the saw blade from the blade to the base. The cake slicer includes a rigid saw blade assembly that linearly reciprocates between two bearing blocks. The saw blade assembly includes a blade tensioning assembly that helps retain the saw blade to the frame of the blade assembly and allows one to adjust the tension of the saw blade. The cake slicer also includes a coupler to connect the rigid saw blade assembly to a motor. The Coupler includes a half coupling with drive pins and a drive pulley with drive-pin recesses that receive the drive pin. The cake slicer also includes a plurality of weighted rollers to prevent unintended elevation or declination of the cakes during operation.
摘要:
A scroll saw having a yoke for mounting a saw blade thereto, the yoke adapted to be received by a mounting support on the reciprocating saw. The yoke includes first and second arms and a region connecting the first and second arms, the first and second arms having ends for receiving the end of a saw blade. The first and second arms and the connecting region are formed of a composite material.
摘要:
A saw blade mounting structure for curve sawing machines that allows buffer play, includes upper and lower saw blade clamps opposedly arranged in a mirror image at front ends of upper and lower support arms adapted to position both pin type and plain type saw blades. an adjusting seat having a post on an upper side for receiving a compression spring therein and a lower side connected to the upper saw blade clamp. The adjusting seat and compression spring are placed in a recess at the front end of the upper support arms with a threaded section of a rotary shaft passing through an upper portion of the recess to lock into a threaded through hole of the adjusting seat to a certain depth, which is adjustable. The rotary shaft has a portion exposed on the outside and connected to a detachable eccentric locking knob. When mounting a saw blade, the locking knob may be turned to exert an eccentric force on the adjusting seat so that the latter elevates to pull the saw blade tight in an optimum position. Replacement of the saw blade is also very easy. When the saw blade hits against a knob in the wood, the compression spring provides sufficient buffer play to avoid breaking of the saw blade. There is also enough play for the upper and lower saw blade clamps to ensure that the saw blade is always in an optimum vertical position with respect to the work table, thus enhancing sawing precision.
摘要:
A coping saw blade is securely mounted to the upper and lower swinging arms of a coping saw by clamping the upper and lower ends of the blade within slits of positioning devices mounted on front portions of the arms. Both flat blades and blades provided with cross end portions may be clamped by the positioning devices.
摘要:
A fret-saw machine comprises a base unit having a table on which a workpiece to be cut is placed, a frame member disposed in the base unit and secured to the table, an arm member having one end portion secured to the frame member and another end portion disposed above the table, a blade holder assembly having first and second slide holder units and first and second blade holder units, the first slide holder unit and the first blade holder units being disposed in the base unit and secured to the frame member and the second slide holder unit and the second blade holder unit being secured to another end portion of the arm member, blade supported at its both ends by the first and second blade holder units and a drive unit supported in the base unit by the frame member and connected to the first slide holder unit to drive the blade. The blade holder unit has a blade nipping member for firmly nipping the blade. A tension applying assembly is disposed to the blade holder assembly for suitably applying the tension to the blade. The blade may carry out its reciprocal motion in an inclined manner. The arm member is fastened so as to be positionally adjustable. The fret-saw machine is further provided with a blade cover having a workpiece pressing function and a rotation preventing structure for the sake of safeness.