Evaluation work piece and computer-readable storage medium

An evaluation work piece for evaluating the influence of at least one factor of a machining program, a numerical controller, a servo controller, a tool, and machining conditions, on machining by a machine tool,

• the evaluation work piece comprising at least one of a part (B) or a part (G), and at least one of a part (A), a part (C), a part (D), a part (E), or a part (F) as follows on a surface machined by the machine tool:
• (A) a vertical level difference part having a vertical level difference and flat surfaces arranged on both sides of the vertical level difference;
• (B) a direction reversing part at which a direction of movement of the machine tool in a height direction is reversed when the machine tool is used for machining of a three-dimensional object including a curved surface;
• (C) a corner part at which a direction of movement of the machine tool changes;
• (D) a flat surface part;
• (E) a boundary part between a flat surface and a curved surface with a changing curvature;
• (F) a curved surface part having a curved surface with a changing curvature;
• and
• (G) a curved surface part at which command points are aligned regularly between adjacent tool paths on a curved surface,
• wherein the curved surface of at least one of the part (B) or the part (G) includes a cut spherical body part, and the at least one of the part (B) or the part (G) is included in the cut spherical body part, a ring-shaped reference surface for a three-dimensional pleasuring machine is arranged around the cut spherical body part, and at least one of the at least one of the part (A), the part (C), the part (D), the part (E), or the part (F) is arranged outside the ring-shaped reference surface,
• wherein at least one surface separates the flat surfaces of the vertical level difference of the part (A) from the ring-shaped reference surface, at least one surface separates surfaces forming the part (C) from the ring-shaped reference surface, and the part (D) and the ring-shaped reference surface are free from overlap and parallel, and
• wherein the ring-shaped reference surface has a constant width and is parallel to a bottom surface of the evaluation work piece.