Hilti Aktiengesellschaft

Peter Hricko

Roland Schaer

Wilfried Kaneider

Dragan Stevic

Christian Bereuter

Erwin Manschitz

Franz Moessnang

Michael Wierer

Manuel Gut

Christoph Würsch

Thomas Kinkeldei

Antonios Draganis

Bernd Gillmeier

Franz MÖSSNANG

A method for controlling a wall saw system during creation of a separating cut in a workpiece. The wall saw system includes a saw head, a pivotable saw arm, a first saw blade, and a larger second saw blade. The separating cut is performed in a plurality of main cuts, where the parameters of the main cuts (saw blade diameter of the saw blade used, main-cut angle) are defined before the start in a main-cut sequence. After the processing of the separating cut by the first saw blade is concluded, the controlled processing of the separating cut is interrupted by a control unit and the wall saw is moved into a parking position such that all actions of the saw-blade change (swinging out the saw arm, removing the first saw blade, installing the second saw blade, and swinging in the saw arm) can be performed.

Method for controlling a wall saw system during the creation of a separation cut

A method for controlling a wall saw system during the creation of a separating cut in a workpiece. The movement of the saw head is controlled at the end points such that a boundary of the wall saw facing the end point coincides with the end point after the pivoting movement of the saw arm. In the case of a free end point, the boundary of the wall saw is formed by an upper exit point of the saw blade. In the case of an obstacle, the boundary of the wall saw is formed by the saw blade edge of the saw blade if the processing occurs without the blade guard or by the blade guard edge of the blade guard if the processing occurs with the blade guard.

The control method for a hammer drill () provides the following steps. During basic operation, the motor () rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder () and to drive the hammer mechanism () with a nominal striking power. The torque coupling () is monitored with the aid of a sensor (). If a disengagement of the torque coupling () occurs, the striking power of the hammer mechanism () is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (), and the torque coupling () is driven. When the disengagement of the torque coupling () ends, the striking power of the hammer mechanism () is increased to the nominal striking power and the torque coupling () is driven at the operating speed for the drilling operation with chiseling action.

Control method for a hammer drill

A control wall saw includes a guide rail () securable on a to-be-cut wall (), a saw head () displaceable along the guide rail (), a rotary drive, a pivotally adjustable saw arm () on a radially end of which a rotatably driven, disc-shaped saw blade () is releasably mountable, a programmable control element () for controlling at least the saw head () and the saw arm () and having an input () and an output (), a displacement sensor () for determining a position of the saw head () along the guide rail () and connected with the programmable control element (), and a pivot angle sensor () for determining a pivot angle (&#x3b1;) of the saw arm () relative to a longitudinal direction of the guide rail () and connected with the programmable control element ().

Controlled wall saw and method for controlling the wall saw

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Buchs, Switzerland

Peter Hricko