A cutting length display device for a hand-held machine tool includes at least one display unit that has at least one light source. The display unit is configured to display at least one position of a cutting edge of a machine tool on a workpiece to be machined depending on a set cutting depth of the machine tool by way of a light beam. The display unit has a mirror unit that is configured to deflect the light beam depending on the set cutting depth of the machining tool.

A miter saw includes a base assembly and a saw unit pivotably coupled to the base assembly. The saw unit includes a saw blade and a lower blade guard covering a lower portion of the saw blade. The miter saw also includes a linkage for raising the lower blade guard to expose the lower portion of the saw blade as the saw unit is lowered toward the base assembly. The linkage is operable to apply a force to the lower blade guard for holding the lower blade guard in a raised position, without any input from the operator of the miter saw and without changing the length of the linkage, to facilitate changing the saw blade.

A miter saw includes a base assembly, a saw unit pivotably coupled to the base assembly, a fence assembly coupled to the base assembly, and a handle assembly coupled to the base assembly. The handle assembly includes a work stop that is adjustable relative to the fence assembly for positioning a work piece against the fence assembly.

A cut member processing device includes a marking device configured to put a mark on a cut surface of a cut member cut out from a metal long workpiece by a cutting device; and a product length acquisition unit configured to measure and store a product length of the cut member. The product length acquisition unit is configured to measure the product length under a state where the cut member is located at a position that allows the marking device to put the mark on the cut surface.

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.

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.

Track saws with self-adjusting rib-guide assemblies and methods of operating self-adjusting rib-guide assemblies of track saws are disclosed herein. The track saws include a motor, an arbor, and a base plate. The base plate defines an arbor-facing side and an arbor-opposed side. The base plate includes a rib-receiving channel and a self-adjusting rib-guide assembly. The self-adjusting rib-guide assembly at least partially defines the rib-receiving channel and is configured to automatically accommodate a range of raised rib transverse widths. The methods include positioning a raised elongate rib of the track within a rib-receiving channel of a base plate of the track saw. During the positioning, the methods also include establishing a contact force between the raised elongate rib and the self-adjusting rib-guide assembly. Responsive to the contact force, the methods further include moving at least a portion of the self-adjusting rib-guide assembly relative to a remainder of the track saw.

A power tool assembly includes a hand-held rotary power tool and a attachment. The power tool includes a power supply, a tool housing and motor that is disposed in the tool housing. The motor includes a motor output shaft that is configured to be mechanically connected to an accessory, which may also be part of the assembly. The power tool includes a controller disposed in the tool housing. The controller is configured to control a speed of the motor. The attachment is configured to be connected to the tool housing. In addition, the attachment is configured to be at least one of electrically connected to the controller, electrically connected to the power supply and mechanically connected to the motor output shaft.

The invention relates to a hand-held circular saw (10) having a saw blade holder (33), which is arranged for mounting a saw blade (30) and which can be rotated about a drive axis (34) by means of a drive assembly (20), wherein a protective cover (24) is provided, which encompasses a chip-guiding space (24.11), inside which a saw-blade-mounting area (24.12) is formed, which is disposed and designed to hold the saw blade (30) in a working position, wherein the protective cover (24) has a lateral casing (24.6), which delimits the chip-guiding space (24.11) at the end facing away from the drive assembly (20), wherein an illumination arrangement (70) having at least one illumination element (71) is provided to at least sectionally illuminate the cutting area of the hand-held circular saw (10), and wherein the illumination element (71) is disposed behind the saw-blade-mounting area (24.12) and/or the cutting area in the feed direction (V) of the hand-held circular saw (10). For improved operating comfort, according to the invention provision is made for the illumination arrangement (70) to be disposed and oriented in such a way that the light emitted by the illumination element (71) is predominantly emitted in the feed direction (V) of the hand-held circular saw (10), in particular without glare for a user of the hand-held circular saw (10), and for the light emitted by the illumination element (71) to extend at least sectionally, preferably completely, in a light-guiding area (24.13), which is separated from the dust-conveying area of the chip-guiding chamber (24.11).

A system is provided comprising a robotic instrument for use with a tool. In some versions, the robotic instrument comprises a hand-held portion to be held by a user and a tool support movably coupled to the hand-held portion to support the tool. The robotic instrument further includes an actuator assembly operatively attached to the tool support and the hand-held portion and configured to move the tool support relative to the hand-held portion in a plurality of degrees of freedom. The robotic instrument may includes a handle alignment member extending from the hand-held portion. At least a portion of the handle alignment member and a tool plane defined by the tool are aligned when the tool support has an optimal range of motion relative to the hand-held portion.