69results about "Portable power driven saws" patented technology

A rotary cutting tool includes a battery pack receptacle, a handle, a motor, a blade driven by the motor, a blade guard surrounding the blade and a shoe. The shoe includes a base and an attachment portion. The base abuts a workpiece and provide a depth of cut. The attachment portion is perpendicular to the base. The attachment portion is welded to the base.

A circular saw may include a base plate and a blade guard assembly coupled to the base plate, the blade guard assembly including an upper blade guard and a lower blade guard movable between an extended position and a retracted position. A circular saw may include a housing assembly coupled to a saw blade guard assembly, an output shaft, and a saw blade clamp coupled to the output shaft, the saw blade clamp configured to hold a saw blade. The circular saw may include a brushless direct current (DC) motor positioned within the housing assembly and operable to rotate the output shaft. The circular saw may include an electronic controller configured to perform a field weakening operation on the brushless DC motor.

A guide rail adapter (3) guides a portable cutting tool along a cutting direction relative to the guide rail. The guide rail adapter (3) has a rail-guided component relative to the guide rail and a base cover (5) that supports the portable cutting tool. A connecting component (6) allows the base cover (5) to be displaced in a direction that intersects a path of the rail (the cutting direction). A locking area (6i) prevents the base cover (5) from moving away from the rail.

The invention relates to an intelligent mobile device and an intelligent system comprising the intelligent mobile device, the intelligent mobile device can be provided with a working head, and the intelligent mobile device comprises an intelligent mobile device main body; the walking mechanism is mounted on the intelligent mobile equipment main body to drive the intelligent mobile equipment main body to move; one end of the connecting arm is rotatably mounted on the intelligent mobile equipment main body, the other end of the connecting arm extends towards one side far away from the intelligent mobile equipment main body and is provided with a connecting structure used for mounting the working heads, and the connecting arm is provided with different working heads through the connecting structure so as to carry out different types of work; and the control module is electrically connected with the connecting arm so as to control the working state of the connecting arm. According to the intelligent mobile equipment, different working heads can be installed through the connecting arm according to different states so as to conveniently and rapidly switch the working states, so that the intelligent mobile equipment has relatively low use cost and relatively high working efficiency, and different requirements of people are met.

The present invention improves workability. A cutting work machine has a discharge channel, concave with a discharge opening open to the left, disposed at an outer peripheral portion of a saw cover. A discharge inlet portion that connects the saw cover and the discharge channel are formed at a front end of the discharge channel. Viewed from above, a side guide surface constituting the right-side surface of the discharge channel inclines to the left toward the rear. The rear surface of the discharge channel consists of a rear guide surface inclined to the rear toward the left side. Thus, cutting chips flowing towards the rear-end side of the discharge channel along the side guide surface hit the rear guide surface and changes the chip outflow direction to the left side (discharge opening side). With cutting chips being discharged substantially leftward from the discharge opening, the workability of the cutting work machine improves.

To provide a portable process machine, in which a use feeling of a user can be improved.SOLUTION: A portable process machine comprises a base, a cover part covering a cutting tool at least partially, a main body part on which the cutting tool is mounted, and an energizing member. The main body part is configured to be displaceable with respect to the base and the cover part, between a first position where the cutting tool is wholly stored in the cover part and a second position where the cutting tool is partially exposed out of the cover part. The main body part has a first contact part that can come into contact with the cover part, and the cover part has a second contact part that can come into contact with the main body part. The portable process machine is configured so that the main body part is energized by the energizing member in a direction in which the part moves from the second position toward the first position and therefore the first contact part comes into contact with the second contact part, which enables the main body part to be positioned at the first position. At least either of the first contact part and the second contact part is formed of an elastic body.SELECTED DRAWING: Figure 7

The present invention relates to a tool blade (14) having a structure (24) comprising at least two elements (22) on at least one side (26) of the tool blade (14), wherein the structure (24), together with its elements, is rotationally symmetric with respect to a rotation angle of less than 360°, particularly 180° at most, about the central blade rotation axis (R) of the tool blade (14), but is not mirror-symmetric with respect to any diameter of the tool blade (14) extending through the blade rotation axis (R). The present invention also relates to a tool mounting section (12), a tool blade system (15), and a power tool (10). The tool enables particularly safe operation.

To provide a technique which can suppress rattling of a cutting machine during tilting operation, smoothly tilt a cutting machine body relative to a base, and suppress height of angular plate to improve visibility.SOLUTION: A portable cutting machine comprises: a base; a body part; a tilting support member which supports the body to the base so that the body can be tiltable around a first axis line relative to the base; a link arm; a groove part which is arranged at a front-end part of the base; and a stationary part. The link arm is provided with a first end part and a second end part directly or indirectly connected with the body and can rotate relative to the body part in conjunction with tilting of the body around a first axis line of the body part. The stationary part is connected with the second end part of the link arm. The stationary part is switchable between a fixed state where the second end part is fixed to the groove part and a released state where the fixed state is released, and is slidable along the groove part in conjunction with rotation of the link arm in the released state.SELECTED DRAWING: Figure 1

The invention relates to a holding element (60) for a device for supporting and / or guiding a machine tool (20) or a workpiece (W). The device has a contact body (40) with a contact surface (42) for placing on a working surface (H) of a workpiece (W) or a wall. The holding element (60) has an adhesive (70) for adhering to the working surface (H) and a securing means for a releasable hold on the contact body (40), wherein the securing means comprises at least one formfitting contour (90) for a formfitting hold on a holding element receiving area (55) of the contact body (40).

The invention relates to a scoring tool (60) for a sawing machine, wherein the scoring tool (60) is designed for rotatable drive about a rotary axis (DV) and has a disc-shaped blade body (62) with flat sides (63) facing away from each other, which has a machine mount (64) in its center (65) through which the rotary axis (DV) penetrates, for detachable attachment to a scoring tool mount (24) of the sawing machine, and on its radial outer circumference (A62) with respect to the rotary axis (DV) has a scoring tooth arrangement (70) for creating a score (RI) in a first workpiece surface (WO) of a workpiece (W), wherein the scoring tooth arrangement (70) has at least one scoring tooth (71) with a main cutting edge (72) extending perpendicular to the flat sides (63) and running between secondary cutting edges (73), and wherein an outer diameter extending radially outward around the machine mount (64) (66) of the scoring tool (60) is a maximum of 80 mm,and wherein, with respect to the axis of rotation (DV), radially outer end regions (74) of the secondary cutting edges (73) have a first transverse distance (Q1) parallel to the axis of rotation (DV) and, with respect to the axis of rotation (DV), radially inner end regions (75) of the secondary cutting edges (73) intended for cutting the groove (RI) into the workpiece (W) have a second transverse distance (Q2) parallel to the axis of rotation (DV), wherein the first transverse distance (Q1) determines a width of the groove at its groove bottom (RB) and the second transverse distance (Q2) determines a maximum width of the groove (RI) and the second transverse distance (Q2) is at least as large as the first transverse distance (Q1). The first transverse distance (Q1) is at most 0.75 times the second transverse distance (Q2) and / or is less than a distance parallel to the axis of rotation (DV) between the flat sides (63) of the leaf body (62) in the area of ​​at least one sprocket tooth (71).

Circular saws include blade mounts for circular saw blades and methods of attaching circular saw blades to circular saws. The circular saws include a motor, an arbor, and a blade mount. The motor includes a motor shaft configured to rotate about a shaft rotational axis. The arbor is configured to receive a torque from the motor when the motor shaft rotates about the shaft rotational axis. The blade mount is operatively attached to the arbor and is configured to selectively and operatively attach a circular saw blade to the arbor. The blade mount includes an inner flange that includes an inner flange blade-contacting surface that faces away from the motor. The inner flange is free from any structure that projects away from the motor and also away from the inner flange blade-contacting surface.

Handheld circular saws with improved cutting capabilities are disclosed herein. The handheld circular saws include a motor and an arbor, which is configured to operatively attach a circular saw blade to the handheld circular saws. In some examples, the handheld circular saws include the circular saw blade, the circular saw blade has a blade diameter, the handheld circular saw has a maximum depth-of-cut, and a ratio of the maximum depth-of-cut to the blade diameter is at least 0.35 and at most 0.45. In some examples, the handheld circular saw includes a base plate that defines an arbor-facing side. In some such examples, at least 95% of the handheld circular saw is fully contained within a footprint of the handheld circular saw. In some such examples, an entirety of the handheld circular saw may be contained within a base plate width of the base plate.

A cordless aw is provided with regenerative braking means that increases the number of repeated cuttings the saw is able to perform (x) per full discharge cycle of the battery pack, as compared to the number of repeated cuttings achievable by the same saw not employing a regenerative braking means (y) per full discharge cycle of the battery pack, such that x / y is approximately at least one of the following: i) 1.1 when cutting a Pressure-Treated (PT) lumber workpiece having a cross-sectional size of approximately 89 mm×89 mm±2 mm, ii) 1.15 when cutting a Spruce Pine Fir (SPF) lumber workpiece having a cross-sectional size of approximately 38 mm×89 mm±2 mm, or iii) 1.25 when cutting Medium Density Fiberboard (MDF) workpiece having a thickness of approximately 19 mm±1 mm and a width of approximately 76 mm±2 mm.

A carriage (4) includes: a housing (24) slidably mounted on a track (8); a platform (26) on which an object to be cut by a cutting device (14) mounted on the track (8) is placed; and a stop (34) that stops the object relative to the cutting device (14) while the object is placed on the platform (26), wherein the platform (26) is movable relative to the housing (24) between a raised position and a lowered position, wherein when the housing (24) is slidably mounted on the track (8), in the lowered position the platform (26) is closer to the track than in the raised position.

A chip collection box for a cutting tool, the cutting tool including a cutter for performing a cutting operation and a protective cover at least partially covering the cutter, a chip guiding channel being provided in the protective cover, the chip collection box being attached to the protective cover and having a chip collecting inlet in communication with the chip guiding channel, a chip collection chamber for receiving chips, and a chip collecting outlet for discharging the chips, and the chip collection chamber being provided with at least one chip overflow port. The chip collection box for a cutting tool allows, when too many chips are accumulated in the chip collection chamber, at least part of the chips to automatically overflow from the chip overflow port, thereby avoiding the risk of the chips clogging the cutter or melting the chip guiding channel due to further accumulation of the chips in the chip guiding channel.

The utility model belongs to the technical field of electric tools, and particularly relates to an electric circular saw convenient to assemble and capable of efficiently dissipating heat, the electric circular saw comprises a motor, the motor comprises an output shaft rotating around the axial direction of the motor and a housing covering the periphery of the motor, and an airflow channel is formed in the housing; the fan is arranged at one end of the opening of the housing and is connected with the output shaft; the shell assembly comprises a first shell and a second shell which are oppositely arranged and connected, and at least part of the fan and at least part of the motor are contained in the first shell; the control assembly is arranged in the second shell and connected with the end, away from the opening, of the cover shell, the control assembly comprises a heat dissipation shell and a circuit board assembly, the heat dissipation shell is located between the circuit board assembly and the cover shell, the second shell is provided with an air inlet allowing airflow to circulate, and the air inlet communicates with the airflow channel; at least part of airflow generated by the fan sequentially flows through the circuit board assembly, the heat dissipation shell and the airflow channel. Efficient heat dissipation can be achieved, and the overall performance of the electric circular saw is improved.

A device may include a first motor including a first motor output shaft coupled to a first pinion. A device may include a second motor including a second motor output shaft coupled to a second pinion. A device may include a transmission including: a master gear configured to engage the first pinion and the second pinion, an input pulley coupled to the master gear, the input pulley having a first diameter, and an output pulley coupled to an output shaft configured to rotate a saw blade, the output pulley having a second diameter that is smaller than the first diameter.

The application discloses a handheld electric circular saw, which comprises a saw blade, an output shaft, a motor, a shell, a bottom plate, a fixed guard and a movable guard. The shell comprises a motor casing for accommodating the motor and a holding part for being held by a user. The bottom plate comprises a bottom plate plane for contacting a workpiece. The fixed guard is fixedly connected with the shell. The movable guard is rotatably connected with the fixed guard. The handheld electric circular saw can be supported on a work surface through the movable guard and the bottom plate. When the handheld electric circular saw is supported on the work surface through the movable guard and the bottom plate, the bottom plate plane is inclined relative to the work surface, and the cutting plane where the saw blade is located is substantially perpendicular to the work surface. The above scheme can provide the handheld electric circular saw with good overall balance, which is not easy to be inclined and is more convenient for a user to hold. The guard and the bottom plate of the handheld electric circular saw are not subjected to lateral force, so that the service life of the guard and the bottom plate can be effectively prolonged.

A cutting tool includes: a drive device for driving a saw blade to rotate; a base plate having an upper surface and a lower surface, wherein the lower surface is configured to abut against a cut material; a body accommodating at least part of the drive device and connected to the upper surface; a handle at least partially configured behind the body; and a junction portion for detachably mounting a battery set. When a cutting depth of the cutting tool is changed and a cutting angle of the cutting tool remains unchanged, a position of the handle relative to the base plate remains unchanged. The cutting tool is comfortable and convenient to use.

To suppress enlargement of a base in a portable processor which is available together with a long ruler by fitting a guide groove of the base and a projecting line of the long ruler.SOLUTION: A portable processor which is available together with a long ruler including a projecting line extending in a length direction comprises a main base, a subbase, and a processor main body. The main base includes an abutment surface to be abutted to a workpiece or the long ruler. The processor main body is supported by the main base at an upper side at an opposite side of a lower side, where the workpiece is disposed, with respect to the abutment surface, and a blade tool is mounted at an edge of a first side in a lateral direction. The subbase includes a groove portion which extends in a longitudinal direction and is fitted in a slidable manner to the projecting line of the long ruler. The subbase is mounted in the main base in a removable manner selectively at a first side of the main base and a second side at an opposite side of the first side.SELECTED DRAWING: Figure 7

A circular saw comprising a shoe including an upper surface and an opposite, lower surface, and a saw unit. The saw unit includes a circular saw blade, a blade guard, and a transparent blade window. The blade guard encloses a portion of the saw blade. The blade guard encloses a portion of the saw blade and has a cutout adjacent a bottom side of the blade guard and a slot above the cutout. The transparent blade window is configured to be received in the cutout to provide a user with a visual indication of the saw blade. The blade window includes a lock tab confined for sliding movement within a first portion of the slot and removable from the slot when aligned with a second portion of the slot to remove the blade window from the blade guard.

The application provides an electric tool, which comprises a shell, a first rotating shaft, a driving assembly and a stop assembly. The shell is internally provided with a containing chamber. The first rotating shaft penetrates the shell, and a saw blade is installed at one end of the first rotating shaft away from the shell. The driving assembly is arranged in the containing chamber to drive the first rotating shaft to rotate. The stop assembly is arranged on one side of the first rotating shaft and comprises a first stop portion and a second stop portion. The first stop portion is used for cooperating with the first rotating shaft to limit the rotation of the first rotating shaft. The second stop portion is arranged on one side of the first stop portion to limit the first stop portion from approaching the first rotating shaft. When the electric tool is in a replaceable state, the second stop portion releases the limitation on the first stop portion. The application solves the technical problem that the user is prone to mistakenly touching the main shaft locking button, which causes the rotating shaft to stop rotating in unnecessary scenarios and causes use risks.

This utility model relates to an electric circular saw that prevents wood chips from splashing. It includes an electric circular saw and a collection bin. The electric circular saw is fitted with a housing, and a connecting plate is connected to the chip outlet at the front end of the housing. The rear end of the collection bin is slidably connected to the connecting plate. Mounting plates are connected to both the front and rear ends of the bottom of the collection bin. Limiting frames are slidably connected to the mounting plates, and a first return spring is fitted onto the limiting frame. One end of the first return spring is connected to the mounting plate, and the other end is connected to the limiting frame. A mounting bracket is slidably connected to the bottom of the collection bin. An inclined surface is provided at the bottom of the limiting frame, and the limiting frame and mounting bracket are in a limiting fit. A filter screen is placed inside the mounting bracket. An unlocking component is provided on the bottom right side of the collection bin to release the limiting frame's restriction on the mounting bracket. The advantage is that the guide fit between the housing and the connecting plate forces splashed wood chips into the collection bin. The airflow channel structure of the filter screen allows air to pass through and be discharged, while the wood chips are blocked and settle, achieving the purpose of sealed wood chip collection.

Handheld circular saws with improved cutting capabilities are disclosed herein. The handheld circular saws include a motor and an arbor, which is configured to operatively attach a circular saw blade to the handheld circular saws. In some examples, the handheld circular saws include the circular saw blade, the circular saw blade has a blade diameter, the handheld circular saw has a maximum depth-of-cut, and a ratio of the maximum depth-of-cut to the blade diameter is at least 0.35 and at most 0.45. In some examples, the handheld circular saw includes a base plate that defines an arbor-facing side. In some such examples, at least 95% of the handheld circular saw is fully contained within a footprint of the handheld circular saw. In some such examples, an entirety of the handheld circular saw may be contained within a base plate width of the base plate.

A support assembly for a guide rail for a cutting tool is described. The support assembly includes a base element with a mechanical interface which is configured for a detachable connection with the guide rail. Further, a support arm having a first end pivotably supported on the base element and a second end configured to support the support assembly on a support surface is provided. The support assembly additionally includes a locking mechanism configured to selectively lock the support arm with respect to the base element in at least two different relative pivotal positions. Furthermore, a guiding assembly for a cutting tool as well as a use of a guiding assembly is presented. Also, a use of a support assembly is described. Moreover, a method for operating a guiding assembly is explained.

The utility model relates to a rotatable adjustable miniature dustless flip saw, it includes the installation base plate of installation flip saw host computer and dust fan, and flip saw host computer and dust fan are located the same side of installation base plate, wherein: fulcrum side angle plate main part passes through installation base plate from the side where flip saw host computer is located to the opposite side and is connected with installation base plate through fulcrum axle spare, and fulcrum axle spare is located the projection range of dust fan's air storehouse in installation base plate direction, correspondingly, first hollow part is equipped with for the fulcrum side angle plate to pass through and provide the rotating space on installation base plate. After adopting above -mentioned structure, the rotating fulcrum of rotatable flip saw host computer is set up in the air storehouse projection range of dust fan, makes the space that whole occupies reduces, and then can reduce the overall width and overall weight of installation base plate, reduce the volume, compress cost, be convenient for the assembly and carrying of complete machine, improve portability.

A portable circular saw for cutting metal includes a base including a lower surface side abutting against a cut material and a cutter body at least partially supported on the upper surface side of the base. The cutter body includes a circular saw blade, a fixed shield covering the outer circumferential side of the circular saw blade, and a metal chip guide tube disposed in the fixed shield, surrounding part of the outer circumferential side of the circular saw blade, and including a chip guide cavity for guiding a chip. The ratio of the outer surface area S1 of the metal chip guide tube to a surface area S2 of the metal chip guide tube covered by the fixed shield is higher than 1.

To provide a circular saw allowing a dust collection state in a dust collection box to be easily determined.SOLUTION: A circular saw 1 comprises a dust collection box 11 configured to allow chips produced in a cutting process to be collected. The dust collection box 11 is a resin molded body with light transmissivity. The circular 1 has a lighting member 31 for the dust collection box. The lighting member 31 for the dust collection box radiates light from a left side of the dust collection box 11 toward the dust collection box 11. The lighting member 31 for the dust collection box is located at a position lower than the lower ends of an inflow part 14C and a discharge part 15C of the dust collection box 11. The lighting member 31 for the dust collection box is located within a range where a chip receiving part 16 exists in a front-to-rear direction.SELECTED DRAWING: Figure 8

To satisfactorily maintain the moving operability of a handle independently of the attitude of a cutting machine body, because, when the main body of the cutting machine is tilted to the left or right for sloping cutting or pivoted up and down to change the depth of cut, the handle to be grasped for moving operation is also displaced in unison, thus, the user must hold the handle in a tight posture when moving it, which impairs the ease of moving and operating the portable cutting machine.SOLUTION: In the portable cutting machine according to the invention, the body of the cutting machine is supported to tilt left and right and to pivot up and down with respect to the base 10, the handle 30 and battery mounting part 40 are provided on the base 10 side independently of the tilting and swinging motion of the cutting machine body, thus, the grippability of the handle 30 during the moving operation is maintained well independently of the posture of the cutting machine body, the electric wiring 2 arranged between the base 10 and the main body of the cutting machine is covered with a laterally U-shaped tilting interposing member 53 having elasticity in the left and right directions to ensure dust resistance.SELECTED DRAWING: Figure 8

The invention provides an electric tool, and the electric tool comprises a housing which is internally provided with a containing cavity; the first rotating shaft penetrates through the shell, and a saw blade is installed at the end, away from the shell, of the first rotating shaft; the driving assembly is arranged in the containing cavity so as to drive the first rotating shaft to rotate. The locking assembly is arranged on one side of the first rotating shaft and comprises a first locking part, and the first locking part is used for being matched with the first rotating shaft so as to limit rotation of the first rotating shaft; the second stop part is arranged on one side of the first stop part so as to limit the first stop part to be close to the first rotating shaft; and when the electric tool is in the replaceable state, the second stop part relieves the limitation on the first stop part. The technical problem solved by the invention is that a user easily touches a main shaft locking button by mistake, so that a rotating shaft stops rotating in an unnecessary scene, and the use risk is caused.