Hilti Aktiengesellschaft

Marcus Flock

Roland Schaer

Peter Ostermeier

Stefan Hammerstingl

Josef Schittl

Eduard Sever

Wolfgang Erdt

Christoph Würsch

Guenther Veik

Georg Studer

Peter Ehe

Günther Veik

A device () for positioning cutting particles (-), including a receiver () that has a first receiving opening () to receive a first cutting particle (), and a second receiving opening () to receive a second cutting particle (), and comprising a unit or generator () for generating a holding force that affixes the cutting particles () in the receiving openings (), and the holding force that affixes the first cutting particle () in the first receiving opening () can be adjusted independently of the holding force that affixes the second cutting particle () in the second receiving opening ().

Device for positioning cutting particles

A device for cutting a substrate along a cutting line is disclosed. The device includes a saw unit with a saw blade, which can be rotated around an axis of rotation, a guide carriage for moving the saw unit along a guide rail, and a control device for controlling the saw unit and the guide carriage. A marking device is provided for marking an end point of the cutting line.

Device for cutting a substrate and method for controlling such a cutting device

For the automatic determination of the diameter of a tool, particularly a saw blade for an automatic wall saw, which is driven by a motor via a gear unit, the moment of inertia of the tool is used as an indicator for its diameter. Three basic solution variants are introduced. In particular, the system including a motor, gear unit and tool is treated as a dual-mass oscillator such that the elasticity of the shafts and gears is arranged as a torsion spring between the inertial masses in two discrete points while taking into account two coefficients of friction including coefficients of the known inertia of the motor rotor (&#x398;) and of the tool (&#x398;). This system can be described by equations which are then simplified by reasonable assumptions or premises. The selected formulations are solved for the moment of inertia of the tool to determine the diameter therefrom and to make an optimal adjustment for the drive possible which is adapted to the respective tool.

Method and device for the automatic determination of the diameter of a round disk-like tool driven by a motor

A drill stand () for a manually operable tool device () is formed of a fixedly mountable base plate () having a through passageway () extending perpendicularly therethrough for the passage of a clamping bolt () having at least one axially effective stop shoulder (), so that at least one detent means () with an axially effective counter shoulder () for axial form-locking engagement of the shoulder stops () of the clamping bolt (). At least one manually operable eccentric cam () affords axial clamping of the clamping bolt () locked by the detent means () and arranged relative to the through passageway ().

Drill stand with settable base plate

An arrangement for transmitting a torque from a power tool to a working tool and including a shank forming part of the working tool and having following one another, in the operational direction of the working tool, first, second, third, and fourth regions (B B B B ), at least two drive grooves ( ) extending parallel to a working tool axis over all of the shank regions (B B B B ), and at least one additional drive groove ( ) extending in third and fourth regions (B B ) of the shank ( ), with the arrangement further including a chuck ( ) having an opening ( ) for receiving the shank ( ), at least one locking element ( ) projecting into the receiving groove ( ) for engagement into the circumferential groove ( ) of the shank ( ), at least two drive dogs ( ) and an additional drive dog projecting into the receiving groove ( ) for engagement in the first drive grooves ( ) and the at least one additional drive groove ( ).

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Tholey, Germany

Marcus Flock