210results about "Portable power driven saws" patented technology

A metalworking portable cutting machine has a lid for an outlet of a dust collector box with improved operability. A metalworking portable cutting machine includes a cutting machine body including a blade, and a dust collector box to collect a chip resulting from cutting. The dust collector box includes an outlet to discharge the chip, and a lid to open or close the outlet. The lid includes a heat dissipater on a part of a surface of the lid.

A rotary cutting tool includes a battery pack receptacle, a handle, a motor, a cutting wheel driven by the motor, a blade guard surrounding the cutting wheel 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 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 circular saw includes an upper blade housing and a lower blade guard coupled to the upper blade housing. The lower blade guard rotates about an axis and includes a guide track. The circular saw includes a lever having a guide track engaging end and a user engaging end. The lever is coupled to the upper blade housing at a lever pivot point positioned between the guide track engaging end and the user engaging end. The guide track engaging end includes a contact member configured to engage the guide track to rotate the lower blade guard.

A bevel saw (10) configured to perform a bevel cut in a workpiece. The bevel saw includes a motor (90) and an arbor (100) configured to operably mount a circular saw blade (200) to the bevel saw (10) and to rotate the circular saw blade (200) within a blade plane. The bevel saw (10) further includes a base plate (304) defining an arbor-facing side and an arbor-opposite side. The arbor is operably mounted to the arbor-facing side of the base plate (304). The bevel saw (10) also includes a bevel guide (600) configured to selectively vary the bevel angle between the blade plane and the arbor-opposite side of the base plate (304) within a range of motion for the bevel cut angle to selectively vary the bevel cut angle within the workpiece, and may include a bevel guide mount (700) configured to operably mount the bevel guide (600) to the base plate (304).

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.

Circular saws are disclosed herein. The circular saws include a cutting assembly, a base plate, a pivot assembly, and a pivot bias mechanism. The cutting assembly includes a motor and an arbor. The base plate defines an assembly-facing side and an assembly-opposed side. The pivot assembly operatively attaches the cutting assembly to the base plate. The cutting assembly and the base plate are configured to operatively rotate, relative to one another and about a pivot axis of the pivot assembly, to selectively vary a region of the circular saw blade that extends on the assembly-opposed side of the base plate. The pivot bias mechanism is configured to apply a linear force between the cutting assembly and the base plate in a linear bias direction that urges the cutting assembly and the base plate in opposed directions along the pivot axis.

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 provides a work machine that suitably collects machining chips such as dust generated during work. In a circular saw (10), a chip discharge port (27H) and a hood opening (27J) are formed in an inner hood (27), and a dust collection chamber inlet portion (62L1) and a dust collection chamber outlet portion (62L2) are formed in a dust collection housing (60). Moreover, at least a part of the dust collection chamber inlet portion (62L1) and at least a part of the dust collection chamber outlet portion (62L2) are arranged at the same position in the vertical direction.

The utility model relates to the technical field of wood saw blades, and discloses an easy-to-install wood saw blade which comprises an angle grinder, a rotating shaft and a cutting blade, the angle grinder is rotatably connected with the rotating shaft, the rotating shaft is fixedly installed on an output shaft of the angle grinder, the rotating shaft is movably sleeved with a fixed disc, and movable discs are arranged in front of the fixed disc at intervals. The cutting blade is arranged between the movable disc and the fixed disc, clamping blocks are annularly arranged on the inner side of the movable disc, a boss is arranged at the position, corresponding to the movable disc, of the rotating shaft, clamping grooves are annularly formed in the boss, the number of the clamping blocks corresponds to the number of the clamping grooves, and the clamping blocks are movably connected into the clamping grooves. According to the scheme, the movable disc and the fixed disc can be used in cooperation, the position of the cutting blade can be stably fixed, bolt assistance is not needed in the whole disassembling and assembling process, and time and labor are saved.

A circular saw includes: a rotatable circular-saw blade; an electric motor that generates rotational power for rotatably driving the circular-saw blade; and a battery-mounting part configured to detachably mount a battery that supplies electric power to the electric motor. The diameter of the circular-saw blade is 300 mm or more and 460 mm or less.

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.

Circular saws with transparent windows that extend within blade guard openings and cover fastening structures. The circular saws include a motor and an arbor configured to operatively attach a circular saw blade to the circular saw. The circular saws also include a blade guard. The blade guard includes a blade guard opening, which is positioned to permit a user of the circular saw to view a leading edge of the circular saw blade as the circular saw cuts a workpiece. The circular saws also include a transparent window, which extends within the blade guard opening, and a cover fastening structure, which is configured to selectively attach a splinter guard to the blade guard while the transparent window extends within the blade guard opening.

A hand-held power tool may include a rotatable work tool with a center, a circumference and a direction of rotation. The power tool may further include a blade guard arrangement arranged to shield a variable part of the rotatable work tool which may include a blade guard and a swiveling cover part attached to the blade guard. In a first position, the swiveling cover part may be positioned such that a first portion of the circumference is covered, following the blade guard, and extending an angular distance after the blade guard, in the direction of rotation. The swiveling cover part may be moveable between the first position and a second position where a cutting operation of the rotatable work tool along the first portion of the circumference occurs. The cover part may be biased towards the first position.

The utility model relates to the field of electric tools, in particular to a trephine with stable transmission, which comprises a driving assembly and a shell which are rotatably connected, the driving assembly comprises a driving device and a shell, the driving device is positioned in the shell, the front end of the shell is rotatably connected with a trephine blade, the trephine blade is driven by the driving device to rotate, a driven gear is further arranged in the shell, and the driven gear is driven by the driving device to rotate. The driven gear is in transmission connection with the driving device, a sawtooth ring is arranged in the trephine blade, and the sawtooth ring is meshed with the driven gear; the trephine is stable in transmission, and the problem that a trephine blade of a traditional trephine is prone to slipping is solved.

The invention relates to a positioning unit (20) for a hand-held circular saw (70), the positioning unit (20) having a fastening section (21) for interchangeably fastening the positioning unit (20) to a force guide (10), in particular a guide rail, and the positioning unit (20) having a machine tool stop, in particular a starting position stop (23.2) and / or an end position stop (23.1), on a stop side, the limiting device is used for limiting the movement of the hand-held circular saw (70) on the forced guiding part (10) in the guiding direction or opposite to the guiding direction. According to the invention, if the positioning unit (20) is provided with an additional component interface (29), to which the additional component (60) is fixed, preferably exchangeably, in such a way that the workpiece machining using the hand-held circular saw in combination with the forced guide is significantly simplified.

A lockout mechanism for use with a saw, the lockout mechanism including a lockout actuator, a lever, and a pin. The lockout actuator is movable between a safety position in which the lockout actuator inhibits actuation of a trigger and a use position in which the lockout actuator permits actuation of the trigger. The lever is coupled to and movable with the lockout actuator and the pin. The pin is movable between a first position and a second position. The first and second positions correspond with the safety position and use position, respectively. In the first position, the pin is configured to inhibit a motor housing from being moved from a raised position toward a plunged position. In the second position, the pin is configured to permit the motor housing to be moved from the raised position toward the plunged position.

A shuttle assembly for use with a saw guide track is provided. The shuttle assembly includes a base plate to which a saw is mounted. An alignment spacer extends laterally outward from the base plate and provides an abutment for locating a saw blade of the saw while the saw is being secured to the shuttle assembly.

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

A circular saw including a shoe, saw unit, depth scale, and depth stop. The shoe has an upper surface and an opposite, lower surface. The saw unit includes a circular saw blade and is pivotably coupled to the shoe between a first position in which the saw blade does not protrude beyond the lower surface of the shoe, and a second position in which the saw blade protrudes beyond the lower surface of the shoe. The depth scale extends from the upper surface of the shoe. The depth stop includes a stop body, a button, and a spring biasing the button away from the body. The button being movable between a locked position locked to the depth scale, and an unlocked position, movable along the depth scale to a location coinciding with a desired cutting depth. The spring biases the button to the locked position.

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).

The present invention provides a portable processing machine. In the portable processing machine, a parallel ruler for guiding a tool parallel to the edge of a workpiece can be mounted on a base. In the prior art, when the threaded hole for fixing the parallel ruler is damaged due to chips getting stuck or the like, the entire base needs to be replaced. In the case where the threaded hole is a component independent of the base, the disassembly and assembly of the internal threaded component having the threaded hole are very troublesome. It is necessary to make the assemblability of the internal threaded component good. A leaf spring (41) having a C shape when viewed from the front is elastically embedded in a base portion (36a) of the base (2), thereby holding the internal threaded component (42) on the base portion (36a). By a threaded shaft portion (40a) of an external threaded component (40) fastened to a threaded hole (42a) of the internal threaded component (42), the leg portion entering the holding groove portion (39) is pressed, thereby fixing the parallel ruler. Accordingly, the assemblability and maintainability can be improved.

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.