Abstract: An oscillating device of a belt sander is disclosed. The belt sander includes a base, a rotating unit, an oscillating unit, and a control unit. The rotating unit is disposed on one side of the base. The rotating unit includes a motor and a roller. The oscillating unit is disposed on the other side of the base. The oscillating member includes a rolling wheel and an electric motor. The motor and the electric motor drive the roller and the rolling wheel to rotate, and the control unit controls the oscillation frequency of the electric motor. The service life of the motor and the electric motor can be prolonged, thereby improving the working efficiency of the belt sander.

Abstract: An adjustable multi-section blade structure for an automatic planer includes a cutter shaft, a plurality of cutter holders, a plurality of cutters, and a blade calibration tool. The cutter shaft is a long cylinder. The cutter shaft has an outer annular surface and an axis. The cutter holders are arranged at substantially equiangular intervals around the outer annular surface of the cutter shaft. The cutter holders each have a fixing surface, a bearing surface, and an arcuate groove. The cutters are spaced apart from each other and disposed on the fixing surface. In addition to reducing the cutting load, the precision of the blade can be calibrated through the blade calibration tool to achieve an energy-saving effect.

Abstract: A hand-operated planer provided with both a fixed workbench and a lifting mechanism with a locking function is combined with a hand-operated planer, which includes a base, a movable workbench, a fixed workbench and a lifting mechanism. The lifting mechanism is composed of a connecting seat, a position-limiting member, an operating rod and a positioning block. When the handle of the operating rod is moved, the operating rod will actuate the position-limiting block of the position-limiting member to operate and drive the driven plate of the connecting seat to rotate via transmission of the connecting rod and thus, the movable workbench assembled above the axis of the connecting seat can be adjusted in height.

Abstract: A speed control system of a universal motor is electrically connected with a universal motor and includes a speed detecting unit and a controller. The controller is provided with a slow start unit, a speed control unit and a stopping-protecting unit. The slow start unit enables the rotating speed of the universal motor to increase smoothly, and the speed control unit controls and compensates the rotating speed of the universal motor in a way of closed loop, able to achieve effect of stepless speed adjustment and, when used at low speed, having cutting ability similar to that when operated at high speed. The stopping-protecting unit is able to automatically cut off power and carry out protection when machine table is stopped.

Abstract: A wood planing machine having both manual and automatic planing wood function includes a fundamental base provided with a first working platform and a second working platform. The fundamental base has two sides respectively provided with a guide unit, and a wood planing device is combined with the guide units. Thus, when the wood planing device is pushed to move toward the second working platform from the first working platform, the wood positioned on the first working platform will be planed to form a first flat surface. Then, the wood planing device is positioned at the second working platform, and the wood is turned over to have the wood planing device automatically planing the wood to form a second flat surface. Therefore, this invention is able to integrate efficacy of a manual wood planer and an automatic wood planer and enhance safety in use of the wood planning machine.

Abstract: A dust-collecting plant of a circular sawing machine is combined with a circular sawing machine, which contains a machine base and a working platform. The dust-collecting plant includes an upper fundamental seat, a slide seat and a lower fundamental seat. The upper fundamental seat is provided with plural slide rods inserted out of the slide seat, which has one side provided with a transmission unit containing a saw blade and another side disposed with a dust-collecting plant containing an accommodating groove and a dust-collecting mouth. The lower fundamental seat is fixed at another end of the slide rods and provided with a lifting unit for moving the slide seat up and down. When the slide seat is moved up and down, the saw blade and the dust-collecting mouth can maintain equidistance, letting scraps sawed eject directly to the dust-collecting mouth for enhancing efficiency of dust collection.

Abstract: An emergency stop device of a wood planing machine is fixed with a wood planing machine. The emergency stop device includes an elongated touch board, two push buttons and two elastic members. The elongated touch board covers the push buttons and the elastic members, and the push buttons are electrically connected with a power supply unit, while the elastic members have their elastic ends pressing against the elongated touch board. Thus, in normal state, the elastic members will press against the elongated touch board and in emergency, the elongated touch board can be pressed to compress the elastic members and further press the push buttons to stop the power supply unit and make the wood planing machine stop operating.

Abstract: An oil pressure mobile device for a wood working machine is provided in a wood working machine, including a power mechanism and a lifting mechanism. The power mechanism is provided with an oil hydraulic cylinder having its inner wall annularly mounted with a piston fixed with a telescopic rod. The lifting mechanism is disposed with two wheel pressing plates at the underside of the wood working machine. The two wheel pressing plates are jointly provided with a connecting link connected with the telescopic rod, and respectively installed with a moving wheel. Thus, the telescopic rod is driven by the power mechanism to extend or retract and actuate the wheel pressing plates to produce angular variation to make the moving wheels stretch out of the housing of the wood working machine for facilitating shifting of the wood working machine with less labor.

Abstract: A slidable workbench includes a shifting mechanism and a push member. The shifting mechanism includes a fixed board, two slide rails, and a sliding platform. Immovable sections of the slide rails are disposed on the top surface of the fixed board and spaced at an interval. Movable sections of the slide rails are disposed at the bottom surface of the sliding platform, enabling the sliding platform to slide on the fixed board through the slide rails. Thereby, a workpiece is pushed by the push member and the sliding platform is slidable relative to the fixed board for the user to operate a table saw in a quick, labor-saving and easy manner. The slidable workbench can be used for all kinds of saw machines to enhance the convenience and safety of the saw machines greatly and improve the quality of cutting.

Abstract: A sliding table type circular sawing machine includes a housing having one side assembled with a travelling mechanism and its interior provided with a first fixed seat, a second fixed seat and a third fixed seat spaced apart. A power mechanism is received in the housing and a circular saw blade protrudes out of the topside of the housing. The power mechanism is respectively connected with the second fixed seat and the circular saw blade so that a short distance can be maintained between the extreme and of the power mechanism and the circular saw blade. Thus, cooperating with the travelling mechanism that is able to quickly position a work piece, the sliding table type circular sawing machine of this invention is able to carry out successive sawing operation with quickness, with less labor and with simplicity, thus enhancing convenience of the sliding table type circular sawing machine.

Abstract: An adjusting device for lifting and lowering a workbench is provided between a workbench and a workbench rest. An adjusting seat is firmly secured with the workbench rest and an adjusting wheel is screwed and locked on the adjusting seat. A screwing fastener is inserted through the underside of the workbench and the adjusting wheel, and an elastic member is provided between an upper flange of the screwing fastener and the topside of a fixed plate of the workbench. Thus, by the prestress of the elastic member pushing against the workbench, the workbench can be surely driven by screw rotation of the adjusting wheel and hence the adjusting wheel can easily drive the workbench to move up and down.

Abstract: A digital panel of a belt sander includes a control module. The control module is electrically connected with a conveyer motor and an abrasive belt wheel motor of the belt sander. The control module is connected with a detection module. The control module is further connected with a digital display module and an operation module. Thereby, the operation module controls the conveyer motor and the abrasive belt wheel motor of the belt sander, and detects the running state of the conveyer motor and the abrasive belt wheel motor through the detection module, and displays the running data of the conveyer motor and the abrasive belt wheel motor through the digital display module for the belt sander to be digitalized.

Abstract: A digital panel of a belt sander includes a control module. The control module is electrically connected with a conveyer motor and an abrasive belt wheel motor of the belt sander. The control module is connected with a detection module. The control module is further connected with a digital display module and an operation module. Thereby, the operation module controls the conveyer motor and the abrasive belt wheel motor of the belt sander, and detects the running state of the conveyer motor and the abrasive belt wheel motor through the detection module, and displays the running data of the conveyer motor and the abrasive belt wheel motor through the digital display module for the belt sander to be digitalized.

Abstract: An automatic adjustment device of a belt sander conveyer includes a conveying chassis. One end of the conveying chassis is provided with a first turning shaft assembly, and another end is provided with a second turning shaft assembly. Two ends of the first turning shaft assembly are connected with the conveying chassis through an elastic adjustment device, respectively. The outer sides of the second turning shaft assembly and the first turning shaft assembly are fitted with an abrasive belt. Through the adjustment of the prestressing force of the elastic adjustment device, the relative position of the first turning shaft and the conveying chassis can be adjusted quickly and the parallel orientation of the first turning shaft and the second turning shaft can be adjusted accordingly, such that the tension of the abrasive belt can be adjusted quickly.

Abstract: An adjusting device for lifting and lowering a workbench is provided between a workbench and a workbench rest. An adjusting seat is firmly secured with the workbench rest and an adjusting wheel is screwed and locked on the adjusting seat. A screwing fastener is inserted through the underside of the workbench and the adjusting wheel, and an elastic member is provided between an upper flange of the screwing fastener and the topside of a fixed plate of the workbench. Thus, by the prestress of the elastic member pushing against the workbench, the workbench can be surely driven by screw rotation of the adjusting wheel and hence the adjusting wheel can easily drive the workbench to move up and down.

Abstract: A quick replacement device of an abrasive belt wheel is disposed on a belt sander. The belt sander has an abrasive belt wheel box. The abrasive belt wheel box is provided with two spaced fixing seats. Two ends of the abrasive belt wheel are provided with brackets relative to the fixing seats. The brackets and the fixing seats are fixed through fixing members. Through the fixing members, the abrasive belt wheel can be assembled to or disassembled from the abrasive belt wheel box quickly, providing a simple and quick replacement effect. The time to replace the abrasive belt wheel can be shortened so as to enhance work efficiency and economic efficiency.

Abstract: An engraving machine includes a machine base, an engraving device and a clamping device assembled on the machine base, and a control unit. The clamping device is able to clamp a work piece and actuate the work piece to rotate. The control unit is composed of a 3-D picture converter, a coordinate location definer and a positioning controller. By so designing, a datum is first converted into a 3-D picture by the 3-D picture converter and then, coordinate locations of the circumferential face of the work piece is defined by the coordinate location definer and lastly, a carving knife is driven and positioned by the control unit to carry out operation of engraving, lowering cost, convenient in operation and able to freely to change speed ratio between a driving mechanism and a driven mechanism.

Abstract: An engraving machine includes a machine base, an engraving device and a clamping device assembled on the machine base, and a control unit. The clamping device is able to clamp a work piece and actuate the work piece to rotate. The control unit is composed of a 3-D picture converter, a coordinate location definer and a positioning controller. By so designing, a datum is first converted into a 3-D picture by the 3-D picture converter and then, coordinate locations of the circumferential face of the work piece is defined by the coordinate location definer and lastly, a carving knife is driven and positioned by the control unit to carry out operation of engraving, lowering cost, convenient in operation and able to freely to change speed ratio between a driving mechanism and a driven mechanism.

Abstract: A protecting cover for an X-axial screw of a carving machine includes a driven base positioned between an X-axial sliding base and an X-axial screw, and a hood. A through groove is bored in the driven base for the hood to pass through to surround the X-axial screw, enabling the driven base to move freely along the hood to effectively protect the X-axial screw. And as the hood doesn't have to be extended or compressed while the X-axial sliding base is moving, it can avoid the disadvantage of being easily broken that would happen to a conventional one owing to constant extending and compressing. So the protecting cover of the invention is pretty reliable.

Abstract: A fast changeable worktable of a carving machine includes a bottom base having a sliding groove used to fit a main table, and a driving unit. Installed on each sidewall of the sliding groove is a first pressing portion tightly squeezing with a second pressing portion of the worktable, so that the worktable can be stably positioned without vibrating. And with a rack fixed on the bottom of the worktable to engage with a gear of the driving unit, the worktable can easily slide along the sliding groove for being swiftly replaced with a proper one if necessary.