Cutting length display device
AssigneeRobert Bosch GmbH
InventorsThorsten Kuehn, Thomas Ziegler, Michael Wall, Joerg Maute
Life of this patent
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Abstract
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.
Claims19
A cutting length display apparatus for a portable power tool, the portable power tool having a machining tool, the machining tool having a set cutting depth that is adjustable, the cutting length display apparatus comprising:
- at least one display unit having (i) at least one light source configured to emit a light beam and (ii) a mirror unit configured to deflect the light beam onto a workpiece to be machined based on the set cutting depth of the machining tool, the at least one display unit configured to display, with the light beam after deflection by the mirror unit, at least one position indicative of a cutting edge of the machining tool at the set cutting depth, wherein the mirror unit has at least one mirror element configured to rotate in a movement-dependent manner about an axis of rotation as the set cutting depth is adjusted such that the mirror element deflects the light beam at the at least one position, wherein the mirror unit has at least one cable system that is configured to induce a rotational movement of the at least one mirror element based on the set cutting depth of the machining tool, the rotational movement being less than one revolution of the at least one mirror element about the axis of rotation.
A power tool, comprising:
- a cutting depth setting unit configured to adjust a set cutting depth of a machining tool;
- and
- at least one cutting length display apparatus that includes at least one display unit, the at least on display unit having:
- at least one light source configured to emit a light beam, and
- a mirror unit configured to deflect the light beam onto a workpiece to be machined based on the set cutting depth of the machining tool, the at least one display unit configured to display, with the light beam after deflection by the mirror unit, at least one position indicative of a cutting edge of the machining tool at the set cutting depth,
- wherein the mirror unit has at least one mirror element that is configured to rotate about an axis of rotation, the mirror unit operatively coupled to the cutting depth setting unit in a movement-dependent manner such that a movement of the cutting depth setting unit simultaneously rotates the at least one mirror element such that the at least one mirror element deflects the light beam at the at least one position.
A cutting length display apparatus for a portable power tool, the portable power tool having a machining tool, the machining tool having an adjustable set cutting depth, comprising:
- a display unit having a light source configured to emit a light beam and a mirror unit configured to deflect the light beam based on the set cutting depth of the machining tool such that the light beam intersects a reference plane at a position indicative of a cutting edge of the machining tool at the set cutting depth, the reference plane corresponding to a surface of a workpiece configured to be machined by the machining tool at the set cutting depth,
- wherein the mirror unit has at least one mirror element configured to rotate in a movement-dependent manner about an axis of rotation as the set cutting depth is adjusted such that the at least one mirror element deflects the light beam so as to intersect the reference plane at the position.
Dependencies are inferred from the claim text.