The invention solves the problem of the construction of a lance of a cleaning kit for medium-voltage power devices. The lance is equipped with an external assembly (A) and an internal assembly (B) placed therein, wherein the external assembly (A) constitutes a head (1) with clamps (2) and (3) of connections, mounted in it from the front, and connected to a body (4). The body (4) is detachably connected to an extension (5), which at the opposite end is detachably connected to a dispensing nozzle (6).

Disclosed are systems, method and devices for the processing of plasterboard sheets to provide cut plasterboard panels which are appropriately dimensioned for installation on a building site. The technology provides devices for measuring building framing, translating the building measurements to cut instructions, equipment and processes for cutting the plasterboard sheets, systems and methods of unloading, stacking and transporting the cut plasterboard panels, as well as instructions for installation.

A machining path creating device for wire electric discharge machines creates a machining path for machining a keyway in a side surface of a round hole. The machining path creating unit compares a keyway depth and a diameter of the round hole input by an operator. The machining path creating device determines that the input keyway depth is a cut depth when the input keyway depth is smaller than the diameter of the round hole and that a value obtained by subtracting the diameter of the round hole from the input keyway depth is the cut depth when the input keyway depth is larger than the diameter of the round hole.

A cutting data generator includes an editing unit configured to edit a plurality of figures into a desirable pattern and a control device. The control device is configured to detect superposition of outlines of the figures adjacent to each other and/or an intersection of the outlines of the adjacent figures and to generate cutting data including a first cut line which is an outline of the pattern and a second cut line which is the detected superposed outline and/or a line segment between the intersections, the first cut line being a line along which the pattern is cut out of a sheet, the second cut line being a groove-shaped or perforated line.

A process for separating, collecting and storing pieces cut from one or more metal sheets and resulting from at least one cutting step, during which one or more pieces, variously arranged and configured, have been cut on the metal sheet. The present invention concerns also the system implementing this process.