Method for controlling a wall saw system when making a separating cut

A method for controlling a wall saw system, wherein the wall saw system comprises a guide track and a wall saw with a saw head, a motorized feed unit that displaces the saw head parallel to a feed direction along the guide track, at least one saw blade that is attached to a saw arm which is pivotable about a pivot axis of a saw head and is driven about a rotation axis, and at least one removable blade guard enclosing the saw blade;

• and comprising the steps of:
• making a separating cut of an end depth (T) in a workpiece having a workpiece thickness (d) between a first end point (E1) and a second end point (E2);
• wherein, prior to starting a processing of the separating cut, controlled by a control unit of the wall saw system, at least a saw blade diameter (D) of at least one saw blade, positions of the first and second end points (E1, E2) in the feed direction, the end depth (T) of the separating cut, and a main cutting sequence of m main cuts, where m≥2, are established;
• wherein the main cutting sequence comprises at least a first main cut having a first main cutting angle (α1) of the saw arm and a first diameter (D1) of the utilized saw blade and a following second main cut having a second main cutting angle (α2) of the saw arm and a second diameter (D2) of the utilized saw blade;
• wherein, during the processing controlled by the control unit:
• the first main cut is performed with the saw arm tilted at a positive or a negative first main cutting angle (±α1) in a positive feed direction;
• and
• the second main cut is performed with the saw arm tilted at a positive or a negative second main cutting angle (±α2) in a negative feed direction opposite the positive feed direction;
• wherein a pivot motion of the saw arm from the first main cutting angle (±α1) into the second main cutting angle (±α2) is performed in at least two steps with at least one intermediate angle (±ß1, ±ß2), wherein between pivot motions of the saw arm, there occurs in the at least one intermediate angle (±ß1, ±ß2) a free-cutting of the saw blade in each case;
• wherein during free-cutting of the saw blade, the saw head is forwarded in the negative feed direction with the saw arm tilted at an intermediate angle in a position such that after pivot motion of the saw arm in the following intermediate angle (±ß1, ±ß2) or in the second main cutting angle (±α2) a first boundary of the wall saw coincides with the first end point (E1), if the pivot motion of the saw arm from the first main cutting angle (±α1) into the second main cutting angle (±α2) occurs at the first end point (E1), or a second boundary of the wall saw coincides with the second end point (E2), if the pivot motion of the saw arm from the first main cutting angle (±α1) into the second main cutting angle (±α2) occurs at the second end point (E2);
• wherein the first boundary is formed by a first upper exit point of the utilized saw blade, facing the first end point (E1), on a top side of the workpiece, if the first end point (E1) is a free end point without an obstacle, by a first saw blade edge of the utilized saw blade, facing the first end point (E1), if the first end point (E1) is an obstacle and the cutting occurs without a blade guard, and by a first blade guard edge of the utilized blade guard, facing the first end point (E1), if the first end point (E1) is an obstacle and the cutting occurs with a blade guard, and the second boundary is formed by a second upper exit point of the utilized saw blade used, facing the second end point (E2), on an upper side of the workpiece, if the second end point (E2) is a free end point without an obstacle, by a second saw blade edge of the utilized saw blade, facing the second end point (E2), if the second end point (E2) is an obstacle and the cutting occurs without a blade guard, and by a second blade edge of the blade guard of the utilized blade guard, facing the second end point (E2), if the second end point (E2) is an obstacle and the cutting occurs with a blade guard.