A portable handheld machine saw having a saw assembly (11) which has a saw tool receptacle (14) for a saw tool (15) and a saw drive motor (12) for driving the saw tool receptacle (14), and having a guide device (17) which has a guide body (18) having a guide surface (19) extending along a longitudinal axis (L) for guiding the handheld machine saw (10) in a working direction (AR) on a workpiece (W). The handheld machine saw (10) has a pre-scoring assembly (31), arranged in front of the saw assembly (11) on the guide device (17) in relation to the working direction (AR), having a pre-scoring tool receptacle (34) for a pre-scoring tool (35), and having a pre-scoring drive (32A), for driving the pre-scoring tool receptacle (34), wherein, on the basis of the pre-scoring tool (35) protruding in front of the guide surface (19) during pre-scoring operation of the handheld machine tool, a score (RI) can be introduced into the workpiece (W), in the working direction (AR), in front of the saw cut (SAE) to be introduced.

A cutting apparatus includes: a supply part for supplying an object to be cut; a first cutting part for cutting the object to be cut, provided from the supply part; a carrying part arranged to be consecutive to the first cutting part to carry an intermediate cut object, cut by the first cutting part; and a second cutting part arranged to be consecutive to the carrying part to receive and cut the intermediate cut object from the carrying part, wherein the first and second cutting parts comprise saw blade parts movably and rotatably configured to cut the object to be cut or the intermediate cut object, and the saw blade part has a rotary shaft formed on the upper side of the object to be cut or the intermediate cut object.

A dual-spindle circular saw (1) for sawing wood (2) with two saw groups (3) is proposed, wherein each saw group (3) comprises a drive (7) having an armature (5) and a stator (6) for rotary driving of a saw spindle (9) which is mounted in a housing (8) and which is connected in a rotationally fixed manner to at least one saw tool (11) comprising at least one exchangeable circular saw blade (10), and wherein the center distance (A) of the saw spindles (9) is adjustable by an actuator. In order to create particularly advantageous design conditions, it is proposed that the armature (5) is arranged in a rotationally fixed manner on the saw spindle (9) and the stator (6) is arranged in a rotationally fixed manner in the housing (8) between a fixed bearing (13) and a floating bearing (14) of the saw spindle (9), wherein the saw tool (11) is floatingly mounted on the saw spindle (9).

A mobile handheld machine saw having a saw assembly, which has a saw toolholder for a saw tool and a saw drive motor for driving the saw toolholder, and having a guide device, wherein the handheld machine saw has a scoring assembly, which is arranged in front of the saw assembly on the guide device with respect to the working direction, having a scorer toolholder for a scoring tool and having a scoring drive for driving the scorer toolholder, wherein a score upstream from the saw cut to be introduced in the working direction can be introduced into the workpiece by means of the scoring tool protruding in front of the guide surface in scoring operation of the handheld machine tool. It is provided that the scoring assembly has a scorer dust extraction device for extracting particles arising during the introduction of the score by the scoring tool into the workpiece.

A mobile hand-held sawing machine having: a sawing assembly (11), which has a sawing tool holder (14) for a sawing tool (15) and a saw drive motor (12) for driving the sawing tool holder (14); and a guide device (17), which has a guide body (18) having a guide face (19), extending along a longitudinal axis (L), for guiding the hand-held sawing machine (10) in a working direction (AR) on a workpiece (W); the hand-held sawing machine (10) having a pre-cutting assembly (31), which is arranged on the guide device (17) in front of the sawing assembly (11) in relation to the working direction (AR) in a longitudinal position in relation to the longitudinal axis (L) and has a pre-cutter tool holder (34) for a pre-cutting tool (35) and a pre-cutter drive (32A) for driving the pre-cutter tool holder (34).

A scoring tool for a machine saw, wherein the scoring tool is designed to be rotatably driven around an axis of rotation and has a disk-shaped blade body having flat sides facing away from one another, which has, in its center penetrated by the axis of rotation, a machine adapter for releasable fastening on a scorer toolholder of the machine saw and has, on its radial outer circumference with respect to the axis of rotation, a scoring tooth arrangement for introducing a score into a first workpiece surface of a workpiece and the machine saw can introduce, by means of a saw tool, a saw cut aligned with the score from a second workpiece surface of the workpiece opposite to the first workpiece surface having a saw cut width of the saw cut less than a score width of the score into the workpiece, so that the workpiece does not tear out at the score side flanks.

A handheld machine saw having a saw assembly, which has a saw toolholder for a saw tool and a saw drive motor for driving the saw toolholder, and having a guide device, which has a guide body having a guide surface extending along a longitudinal axis for guiding the handheld machine saw along a working direction on a workpiece or a guide rail, wherein the handheld machine saw has a scoring assembly, which is arranged in front of the saw assembly on the guide device with respect to the working direction, having a scorer toolholder for a scoring tool and having a scoring drive for driving the scorer toolholder, wherein a score upstream from the saw cut to be introduced in the working direction can be introduced into the workpiece by means of the scoring tool protruding in front of the guide surface in scoring operation of the handheld machine tool.