Abstract: A classification device includes: a sorting mechanism that sorts a group of powder particles using an airflow; a dust collector that generates the airflow; a measuring instrument that measures a measurement value related to a speed of the airflow; and a control device that performs wind speed control that controls the speed of the airflow so that the measurement value is maintained within a control range.

Abstract: A workpiece processing apparatus includes: a cabinet having a projection chamber, workpieces being subjected to processing in the projection chamber; a projector configured to project projection media toward the workpieces charged into the projection chamber; an image sensor configured to image the projection chamber to form an image; and a control unit configured to output information relating to presence or absence of a residue in the projection chamber based on an initial image and an inspection image, the initial image being an image formed by the image sensor and being an image of the projection chamber with no workpiece remaining, the inspection image being an image formed by the image sensor and being an image of the projection chamber after discharging processing in which the plurality of workpieces are discharged from the projection chamber.

Abstract: A shot treatment apparatus and a shot treatment method applicable to the mass production of a wide range of products. A shot treatment apparatus, comprising: a spinning table which has a first rotary shaft and which holds and rotates a workpiece; an ejection apparatus that ejects a shot media from a nozzle to the workpiece; a cabinet having a treatment chamber formed therein; and a control apparatus comprising a first control unit that controls the ejection apparatus, the nozzle being held so as to be positionable and three-dimensionally swingable with respect to the workpiece.

Abstract: A shot treatment apparatus and a shot treatment method applicable to the mass production of a wide range of products. A shot treatment apparatus, comprising: a spinning table which has a first rotary shaft and which holds and rotates a workpiece; an ejection apparatus that ejects a shot media from a nozzle to the workpiece; a cabinet having a treatment chamber formed therein; and a control apparatus comprising a first control unit that controls the ejection apparatus, the nozzle being held so as to be positionable and three-dimensionally swingable with respect to the workpiece.