Abstract: A retraction device includes: a spindle, a support plate and a plurality of spring washers. The spindle is movable along an axis direction thereof and has a first end; a support plate has a fixed position, the first end of the spindle penetrates the support plate; and the plurality of spring washers are fitted over the first end of the spindle and stacked together in an identical direction. The plurality of spring washers are compressed between the spindle and the support plate with a predetermined pre-load. The spindle is configured to be switchable between a first position and a second position, and capable of moving a predetermined distance relative to the support plate in the axis direction of the spindle during switching. When in the first position, the spindle is farthest from the support plate, when in the second position, the spindle is closest to the support plate.

Abstract: A guide bar for motor chainsaws has side plates and a middle section between the side plates connected fixedly and non-movably to the side plates. The side plates form a clamping section and a deflection section opposite the clamping section. A guide groove extends circumferentially about the guide bar. The middle section forms the guide groove bottom in the deflection section. A guide bar tip is located where the longitudinal center axis of the guide bar intersects the deflection section. The side plates each have a guide surface extending continuously across a first longitudinal side of the guide bar, the deflection section, and a second longitudinal side of the guide bar. The guide surfaces of the side plates have hardened regions at the first and second longitudinal sides and at the guide bar tip with a hardness greater than a hardness of a middle region of the side plates.

Abstract: A band saw vice assembly for securing a substrate for cutting includes a base that has a first plate coupled to and extending vertically from a first side. A first bar, which is hollow, is coupled to and extends perpendicularly from the first plate. A second plate is coupled to and extends perpendicularly from a sleeve that is positioned around the first bar. A first slot and a second slot, which are aligned and perpendicular to the base, are positioned in the first plate and the second plate, respectively. An actuator, which is operationally coupled to the sleeve, is coupled to and positioned in the first bar. The actuator is positioned to motivate the second plate toward the first plate to frictionally couple to a substrate to fixedly position the substrate. The first and second slots are configured to insert a blade of a band saw to cut the substrate.

Abstract: A method for producing a cutting unit segment of a cutting unit of a machine tool separating device, includes at least one cutter support element and at least one cutter element. In at least one step, the cutter element is molded on the cutter support element by a drawing process in an at least partially staggered manner relative to an outer surface of the cutter support element.

Abstract: A machine tool separating device, in particular a manual machine tool separating device, includes at least one cutting train that comprises at least one cutter-support element and at least one connecting element that is integrally formed with the cutter-support element. The cutter-support element has at least one transverse securing element that is configured to secure the cutter-support element against a transverse movement relative to another cutter-support element of the cutting train to the greatest extent possible in the assembled state.

Abstract: A knockdown band saw guide seat includes multiple separate components. The components can be assembled and connected with each other as building blocks. Accordingly, the relative positions between the assembled components can be respectively adjusted. In addition, the variety, number and position of the assembled components can be changed in accordance with practical requirement to provide necessary function for the operation.

Abstract: A saw band guiding device is comprised of a fixed insert holder comprising a fixed insert guide at a tip end portion of the fixed insert holder, the fixed insert guide guiding one side surface of a saw band; and a movable insert holder comprising a movable insert guide at a tip end portion of the movable insert holder, the movable insert guide being opposed to the fixed insert guide and guiding another side surface of the saw band, the movable insert holder being rotatable relative to the fixed insert holder, wherein the movable insert holder is provided to be regulated in directions where the movable insert holder gets closer to and away from the fixed insert holder so as to regulate a saw band guiding surface of the fixed insert guide and a saw band guiding surface of the movable insert guide to be parallel with each other.

Abstract: In the process of holding a non-toothed section of a band saw blade between a fixed insertion block and a movable insertion block included in a band saw blade guide device, the movable insertion block is moved while a return allowing unit included in an insertion block moving unit is held in a returnable state, the insertion block moving unit configured to move the movable insertion block toward the fixed insertion block. The band saw blade is firmly held between the fixed insertion block and the movable insertion block. Thereafter, the entirety of the insertion block moving unit, including the return allowing unit, is fixed in an immovable state by a mechanical fixing unit.

Abstract: A band saw is includes a driving wheel and a driven wheel rotatably provided at a saw housing; an endless saw band made to run around the driving wheel and the driven wheel; and a plurality of saw band guiding devices for directing and guiding cutting edges of the saw band toward a direction of a workpiece to be cut. The saw band guiding devices are constructed to be movable in directions where one of the guiding devices gets closer to and away from another of the guiding devices, wherein each of the saw band guiding devices includes vibrating means for vibrating the saw band in a cutting direction relative to the workpiece. A pressure member holder including a plurality of pressure rollers or a pressure member for pressing a back surface of the saw band is provided in each of the saw band guiding devices.

Abstract: A saw band guiding device is comprised of a fixed insert holder comprising a fixed insert guide at a tip end portion of the fixed insert holder, the fixed insert guide guiding one side surface of a saw band; and a movable insert holder comprising a movable insert guide at a tip end portion of the movable insert holder, the movable insert guide being opposed to the fixed insert guide and guiding another side surface of the saw band, the movable insert holder being rotatable relative to the fixed insert holder, wherein the movable insert holder is provided to be regulated in directions where the movable insert holder gets closer to and away from the fixed insert holder so as to regulate a saw band guiding surface of the fixed insert guide and a saw band guiding surface of the movable insert guide to be parallel with each other.

Abstract: A device for cutting a block of stone that includes a support bar including a monolithic metallic plate, and a number of fluid ports attached to the plate. The device also includes a wear bar that is secured to the monolithic metallic plate and a lower longitudinal slot, and a cutting belt positioned in the lower longitudinal slot of the wear bar and including a downward-facing cutting surface to cut the block of stone. A method of cutting the stone block is also disclosed.

Abstract: Machine for cutting paper logs, comprising means for supporting one or more logs (3) disposed side by side, means for advancing the logs (3) on said support means, means for the transverse cutting of the logs (3) and means for blocking logs (3) during their cutting. The said cutting means comprise an annular band blade (4) having a bevel (400, 401) on both its edges, provided in correspondence to a cutting station (T) in which the logs (3) are cut and connected to corresponding guiding and actuating means, the said blade (4) featuring a portion (40) defining a corresponding cutting plane which is oriented orthogonally with respect to the longitudinal axes of logs (3), the said blade being provided with a sharpening device (100) continuously acting on both its bevels (400,401). The machine comprises means for the relative motion of logs (3) with respect to said blade (4) along the said cutting plane. The blade (4) acts on one log (3) at a time.

Abstract: Stabilization device of the blade (1),(14) of a saw device with the help of which device the lateral movements which occur during the sawing of the blade (1) of a band sawing machine of a circular saw blade (14) at least at the location of the wood (9) to be sawed can be reduced. The equipment comprises at least magnetic devices (6, 7);(12) which are adjusted to be at a distance from each other and are located at the other side of the blade (1),(14) with the help of which magnetic devices one can form a magnetic flux (10) which runs through the area which is apt to the lateral movements of the blade (1),(14) between the mentioned magnetic devices.

Abstract: A cutting machine including an endless band knife, the band knife being guided in opposed directions in a revolution zone of the band knife forming a cutting zone, and including a first and a second deflecting device for deflecting and returning the band knife. The first and the second deflecting devices each deflect and return the band knife without a reverse bending cycle.

Abstract: A band saw comprises a band saw blade that is moved along a running direction against which a sawing material is guided in a feed direction. The band saw further includes a guide mechanism for the band saw blade comprising a plurality of magnet guide elements that are adjustable in their force for exerting a force on the band saw blade to influence its position in space. The magnet guide elements are positioned upstream and downstream of the sawing material and have at least two magnets one beside the other, as viewed along the running direction.

Abstract: A method for single hand operation of a hand-held band saw is provided. The band saw has a frame and a handle extending from a longitudinal edge of the frame at an acute angle and opposite an edge containing a throat for receiving the work piece, and a continuous-loop blade traversing the throat. The orientation of the handle centers the mass of the saw below the hand and positions a cutting section of the blade in a vertical plane so it will engage a work piece at a preferred angle selected by the user.

Abstract: According to prior art, especially wood workpieces are cut by means of band saws or gate saws, a chipping-type separation of the workpiece (5) being achieved by means of the toothing of the saw blades (2). Proceeding from the prior art, the invention relates to a novel device for separating materials (1) wherein an abrasive saw blade (2) of little blade thickness and having a close-toothed microtoothing (3) is used so that a grinding-type separation of materials is achieved. The resulting kerfs are considerably thinner and the cut edges are treated more gently than known from the prior art. The novel abrasive saw blade (2), however, requires more time-consuming blade guidance and blade cleaning and a different blade production. Treatment of wood and veneers.

Abstract: A power tool system includes at least one power tool which has at least one tool support unit for supporting a tool during machining, and at least one power tool separation device which extends through the tool support unit in at least one operational state. The disclosed power tool separation device comprises at least one cutting unit and at least one guide unit for guiding the cutting unit.

Abstract: A power tool system comprises (i) at least one power tool, in particular a circular saw, having at least one tool support unit for supporting a tool during machining and at least one displaceably mounted tool guiding unit, and (ii) at least one power tool separation device which is arranged on the tool guiding unit. The power tool separation device comprises at least one cutting unit and at least one guide unit for guiding the cutting unit.

Abstract: A hand-held band saw is provided for one-hand operation. The band saw has a frame and a handle extending from a longitudinal edge of the frame at an acute angle and opposite an edge containing a throat for receiving the work piece. The orientation of the handle centers the mass of the saw below the hand and positions the cutting section of the blade in a vertical plane so it will engage a work piece at a preferred angle selected by the user.

Abstract: The invention describes a method of guiding a saw blade using a device, in particular a saw blade that is driven in an oscillating way, having a base body through which a guide slot extends for guiding a saw blade, which guide slot opens into a first guide surface configured as contact surface for the workpiece, having a stop which is supported on the base body and which comprises a second guide surface configured for being brought into contact with the workpiece and arranged at an angle relative to the first guide surface, and having a handle as means for holding the base body.

Abstract: A height adjustment device for a band saw includes a manual driving unit and an automatic driving unit. When one of the manual driving unit and the automatic driving unit is damaged, the user can operate the other to adjust the height where a saw blade guiding device is located, thereby ensuring a smooth running of the production line and improving the production efficiency.

Abstract: An adjustable blade guide for a band saw such as a band saw on a sawmill utilized for sawing lumber. The blade guide is easily adjusted to account for variations in the diameter of the lumber to be cut, and is self locking.

Abstract: A rotating blade guide assembly for use with a sawing machine includes a blade guide carrier and means for rotating the blade guide carrier from a first position to a second position. The first position would be that blade orientation when the blade is initially placed about a pair of band wheels. The second position would be the blade orientation when the blade is rotated about 90° to a cutting position. In this way, the orientation of the sawing machine blade is changed when the blade guide carrier is rotated from the first position to the second position. The rotating blade guide assembly further provides means for securing the blade guide carrier in the second position so as to prevent rotation of the blade guide carrier during use of the sawing machine.

Abstract: In the process of holding a non-toothed section of a band saw blade between a fixed insertion block and a movable insertion block included in a band saw blade guide device, the movable insertion block is moved while a return allowing unit included in an insertion block moving unit is held in a returnable state, the insertion block moving unit configured to move the movable insertion block toward the fixed insertion block. The band saw blade is firmly held between the fixed insertion block and the movable insertion block. Thereafter, the entirety of the insertion block moving unit, including the return allowing unit, is fixed in an immovable state by a mechanical fixing unit.

Abstract: A guide for a saw band or blade of a sawing machine is provided. The guide includes a bracket and high-strength sliders, which are mounted to a bracket for a lateral guide of the saw band or saw blade and which serve for gliding contact to a side face of the saw band or blade. The sliders are high-strength guide plates, provided with an edge upstream in reference to the direction of motion of the saw blade or saw band, which is at least partially arranged in a straight manner or with a constant curve, with the edge or its tangents extending tilted at an angle from approximately 0° to 90°, preferably from 20° to 70°, in reference to the direction of motion of the saw blade or the saw band. Furthermore, several guide plates are mounted to the bracket at a distance from each other, forming clear spaces.

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.

Abstract: A band saw includes a drive wheel and a fixed, curved band saw guide surface having one or more tracks for one or more band saw continuous strips. The one or more tracks contains lubricant openings which are accessed from a source of lubricant under pressure to reduce frictional resistance of the band saw moving over the guide surface.

Abstract: A band saw has a housing, a pair of wheels rotatably disposed on the housing, a drive unit connected to one of the wheel, a continuous band saw blade supported by the wheels, and a guide movably attached to the housing. The guide is positioned to contact with the band saw blade in a thickness direction of the band saw blade in order to restrict movement of the band saw blade in its thickness direction.

Abstract: The chainsaw apparatus of the present invention, comprising in part, a combination saw attachment and positioning assembly which in concert with a transverse guide rail assembly and a vertical level control assembly allows using a chain saw to alternatively make a cut or a series of cuts in either a vertical or horizontal plane, with said saw blade oriented in a longitudinal cutting direction, in a sawmill device; providing thus for making a cant without turning the log and for making dimensionally accurate cuts of lumber from a log or similar wood based substrate with a minimal number of cutting passes; a blade orientation fine tuning assembly allows of refining a true vertical or horizontal planar attitude of the blade. Two speed mechanical assist gantry travel and a double acting remote chain saw safety switch and throttle trigger control is also provided.

Abstract: A band saw comprises a band saw blade moved along a running direction against which a sawing material is adapted to be guided in a feed direction. Moreover, guide means are provided for the band saw blade. The guide means have a plurality of magnet guide elements being adjustable in their force and exerting a force on the band saw blade for influencing its position in space. The magnet guide elements are positioned upstream or downstream of the sawing material and have at least two magnets one beside another, as seen along the running direction.

Abstract: A band saw blade guide includes a cylindrical chisel shaped member mounted at an oblique angle to a band saw blade. The blade guide adjusts the angle of the band saw blade by rotation of the guide about its axis. By rotating the guide about its axis, the angle of the chisel point guiding surface is changed thereby changing the angle of the blade. Further the blade may be guided by a single guide forced against one surface of the blade thereby eliminating the need for guides on both sides of the blade.

Abstract: An adjustable blade guide for a band saw such as a band saw on a sawmill utilized for sawing lumber. The blade guide is easily adjusted to account for variations in the diameter of the lumber to be cut, and is self locking.

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.

Abstract: A tool for cutting PET bottles and the like into ribbons. The tool includes a toolhead having an opening, a cutting blade housed inside the opening and a slot open above and extending perpendicular to the plane of the blade, downwards through the toolhead a short distance past the blade. The blade has a sharp edge across the slot. The slot receives the edge of the bottle obtained by cutting off the bottle bottom or the funnel and spout thereof. The edge is inserted in the slot and the bottle turned so that the blade cuts through the bottle following a spiral path and producing a ribbon of PET material at an outlet side of the slot.

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.

Abstract: A band saw has a band saw blade and a guide for the band saw blade. The guide comprises at least two magnets enclosing the band saw blade within a gap between them and exerts on the band saw blade a force influencing a position thereof in space. A blow out device is provided which is connected to the gap.

Abstract: A rotating blade guide assembly includes a blade guide carrier and means for rotating the carrier from a first position to a second position. The support structure for the assembly provides a means of supporting the assembly in both positions while allowing an opening for the band to be inserted without twisting in the first position. The first position would be that blade orientation when the blade is placed about a pair of band wheels. The second position would be the blade orientation when the blade is rotated 90° to a cutting position. In this way, the orientation of the blade is changed when the blade guide carrier is rotated from the first position to the second position. The assembly further provides means for securing the blade guide carrier in the second position to provide accurate alignment and prevent rotation of the carrier during use.

Abstract: A powered hand-held band for cutting a work piece and a method for manufacture and use. The band saw includes alternate blade guides respectively for selectively using one of a first cutting path for cutting a work piece flush with respect to a work surface and a second cutting path for non-flush cuts.

Abstract: A height adjustment device for a band saw includes a manual driving unit and an automatic driving unit. When one of the manual driving unit and the automatic driving unit is damaged, the user can operate the other to adjust the height where a saw blade guiding device is located, thereby ensuring a smooth running of the production line and improving the production efficiency.

Abstract: A device for the support and/or drive of diamond wire of machines for cutting natural or agglomerate stones includes at least one pulley, wheel or drum for support and/or drive, provided with at least one groove for holding at least one diamond wire for cutting; soft material placed between the diamond wire and the winding groove of the said wire; wherein the soft material is wrapped around the pulley, wheel or drum but not fixed and is interposed in the winding of the diamond wire on it, along the winding arch, and is closed in a ring, similarly to a belt, with the winding of the said ring or belt also on a tightening wheel; furthermore, this tightening is achieved by using adjustment means for the tightening wheel to increase the wheelbase of the pulley, wheel or drum for the support and/or drive of the diamond wire in question.

Abstract: A shoe for a band saw includes a block for coupling to the band saw, the block having an aperture, a locking ball disposed in the aperture, a body including a first surface for engaging a workpiece and an opposite surface having plurality of recesses, and a locking rod coupled to the block and movable between a first position and a second position. The locking ball is received in one of the plurality of recesses of the body when the locking rod is in the first position such that the body is fixed relative to the block, and the body is movable relative to the block when the locking rod is in the second position.

Abstract: A chip removing device, in which a pair of brush support bodies include brushes 57 that can come into contact with both side surfaces of a band saw blade 23U, a rotation direction on a side where the pair of brushes come into contact with the band saw blade is inclined in a forward and downward direction with respect to a running direction of the band saw blade, the brush support body is provided such that it can rock in a direction approaching the band saw blade and in a direction separating away from the band saw blade, the chip removing device includes a biasing unit that can bias the brush support body in the direction approaching the band saw blade and in the direction separating away from the band saw blade, and the brush is rotated from the blade root side to the blade tip side of the band saw blade, thereby removing the chips.

Abstract: A band saw blade guide comprised of a cylindrical chisel shaped member mounted at an oblique angle to a band saw blade. The blade guide adjusts the angle of the band saw blade by rotation of the guide about its axis. By rotating the guide about its axis, the angle of the chisel point guiding surface is changed thereby changing the angle of the blade. Further the blade may be guided by a single guide forced against one surface of the blade thereby eliminating the need for guides on both sides of the blade.

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.

Abstract: A workpiece cutting method utilizing a band-saw machine, includes the following steps of: guiding tooth tips of an endless band-saw blade provided on the band-saw machine in a direction of a workpiece by a band-saw blade guiding apparatus; and applying vibrations to the band-saw blade in a cutting direction to the workpiece so as to perform cutting of the workpiece by a vibration applying unit provided on the band-saw blade guiding apparatus.

Abstract: A band saw blade guide includes a cylindrical chisel shaped member mounted at an oblique angle to a band saw blade. The blade guide adjusts the angle of the band saw blade by rotation of the guide about its axis. By rotating the guide about its axis, the angle of the chisel point guiding surface is changed thereby changing the angle of the blade. Further the blade may be guided by a single guide forced against one surface of the blade thereby eliminating the need for guides on both sides of the blade.

Abstract: A guide for a saw band or blade of a sawing machine is provided. The guide includes a bracket and high-strength sliders, which are mounted to a bracket for a lateral guide of the saw band or saw blade and which serve for gliding contact to a side face of the saw band or blade. The sliders are high-strength guide plates, provided with an edge upstream in reference to the direction of motion of the saw blade or saw band, which is at least partially arranged in a straight manner or with a constant curve, with the edge or its tangents extending tilted at an angle from approximately 0° to 90°, preferably from 20° to 70°, in reference to the direction of motion of the saw blade or the saw band. Furthermore, several guide plates are mounted to the bracket at a distance from each other, forming clear spaces.

Abstract: The present invention is an attachable rolling plate assembly which can be attached as a single unit to a portable cutting tool to facilitate the safe rolling movement of the portable cutting tool on the workpiece. The invention comprises a front wheel housing portion, a back wheel housing portion, and two or three metal rods which interconnect the two housings. The housings removably retain a pair of spaced apart wheels and means to retain a cutting tool on the housings so that the cutting tool can be rolled on the workpiece during operation of the tool while the cutting blade portion of the tool extends between a pair of adjacent interconnecting rod members. The front and rear wheel housing assembly receives the cutting blade in between its pins or axles, so that the entire width of the saw plate is supported by the wheels during cutting.

Abstract: An articulating band saw apparatus provides a frame that includes a vertically extending section having upper and lower end portions. An elevator moves between the upper and lower end portions of the frame. A first hydraulic actuator is supported on the elevator for movement therewith. A first arm provides arm end portions, the first arm supported by the first hydraulic actuator. An end of the first arm supporting a second hydraulic actuator that is spaced away from the first hydraulic actuator. The second hydraulic actuator supports a second arm. An endless band type saw is mounted on the free end of the second arm generally opposite the second actuator. The band saw is movable by articulation of the first and second actuators and resulting movement of the first and second arms. In one embodiment, the band saw is a diamond wire saw.