US 12,459,157 B2
Mobile hand-held sawing machine having pre-cutting assembly and grip
Philipp Sobl, Esslingen (DE); Wolfgang Spengler, Neidlingen (DE); and Marco Haible, Wernau (DE)
Assigned to Festool GmbH, Wendlingen (DE)
Appl. No. 17/783,772
Filed by Festool GmbH, Wendlingen (DE)
PCT Filed Dec. 13, 2020, PCT No. PCT/EP2020/085880
§ 371(c)(1), (2) Date Jun. 9, 2022,
PCT Pub. No. WO2021/116483, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 10 2019 134 417.4 (DE), filed on Dec. 13, 2019.
Prior Publication US 2023/0036750 A1, Feb. 2, 2023
Int. Cl. B27G 19/04 (2006.01); B23D 45/10 (2006.01); B27B 9/02 (2006.01)
CPC B27G 19/04 (2013.01) [B23D 45/105 (2013.01); B27B 9/02 (2013.01)] 32 Claims
OG exemplary drawing
 
1. 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, 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 a saw cut can be introduced along the working direction into the workpiece by means of the saw tool protruding in front of the guide surface in sawing operation of the handheld machine tool, wherein the handheld machine saw has a scoring assembly, which is arranged in front of the saw assembly in a longitudinal position with respect to the longitudinal axis on the guide device with respect to the working direction, having a scorer toolholder for a scoring tool, and having a scorer drive for driving the scorer toolholder, which is movably mounted on or with respect to the guide device by means of a scorer depth setting bearing along a depth setting movement path between at least one active position, in which the scoring tool arranged on the scorer toolholder protrudes in front of the guide surface to introduce a score upstream from the saw cut to be introduced in the working direction into the workpiece, and an inactive position, in which the scoring tool is adjusted behind the guide surface and wherein the handheld machine saw further comprises a scorer handle body assigned to the scoring assembly having a handle surface for an operator for guiding the handheld machine tool, which is arranged on an upper side of the guide device opposite to the guide surface in the longitudinal position of the scorer toolholder or the scoring assembly, and
wherein the saw toolholder is movably mounted on or with respect to the guide device by means of a saw depth setting bearing between an upper depth setting position and at least one lower depth setting position, wherein the saw tool protrudes farther in front of the guide surface in the lower depth setting position than in the upper depth setting position, and
wherein the saw depth setting bearing is separate from the scorer depth setting bearing, and
wherein the handheld machine saw has a driving device, the driving device providing a driving coupling between the saw toolholder and the scorer toolholder whereby, upon a movement of the saw toolholder between depth setting positions, the scorer toolholder is carried along between the inactive position and the at least one active position, wherein the driving device has an actuation generator arranged on the saw assembly for actuating an actuation acceptor arranged on the scoring assembly.