Abstract: A machining apparatus includes a multi-joint arm provided with a machining tool for machining a workpiece. A control device of the machining apparatus includes: a storage section for storing NC data indicating a machining region of a workpiece by the machining apparatus; a distance measurement sensor placed on the arm and for measuring a distance between the workpiece and the machining apparatus for each machining surface of the workpiece; and a correction section for correcting the NC data for each of the machining surfaces based on a measurement result by the distance measurement sensor. As a result of this, the machining apparatus can perform the correction of machining data in correspondence to deviation of a machining object with higher accuracy.

Abstract: An abrasive water-jet machining device includes an abrasive nozzle assembly (11) that jets ultrahigh-pressure water mixed with an abrasive during a cutting process for cutting a workpiece (W) into a desired shape, a catcher cup (12) that collects the ultrahigh-pressure water jetted from the abrasive nozzle assembly (11), and a distance adjusting mechanism (13) that adjusts the distance between the abrasive nozzle assembly (11) and the catcher cup (12) so as to maintain a constant distance between the catcher cup (12) and the workpiece (W). The device increases the collection rate of the abrasive fluid when cutting a workpiece whose plate thickness changes in a longitudinal direction (vertical direction) and/or a width direction (horizontal direction).

Abstract: A stringer manufacturing method for machining one end portion of an elongated member that is provided with a cap flange, a web, and a base flange and that has an inverted T-shape in a front view, an I-shape in a front view, or a T-shape in a front view into a desired shape to obtain a desired stringer. The one end portion of the elongated member is machined into a desired shape by using a vertical articulated robot (1) that has at least 6 axes and that has, at the tip of a valve unit (13), an abrasive nozzle assembly (14) that injects ultrahigh-pressure water containing abrasive and a catcher cup (15) that recovers the ultrahigh-pressure water ejected from the abrasive nozzle assembly (14).