8460.31.00 - Numerically controlled

This HTS category encompasses sharpening (tool or cutter grinding) machines that are numerically controlled. These machines utilize grinding stones, abrasives, or polishing products to perform sharpening operations on tools and cutters. The key defining characteristic for classification under 8460.31 is the incorporation of numerical control systems, which allows for automated and precise execution of sharpening cycles based on pre-programmed instructions.

This category is distinct from its sibling, 8460.39.00, which covers "Other" sharpening machines. While both fall under the broader umbrella of sharpening machines, 8460.31.00 is specifically reserved for those equipped with numerical control, differentiating them from simpler, manually operated, or less sophisticated automated sharpening devices.

Within this numerically controlled sharpening machine category, further subdivisions exist to refine classification. The subcategories, such as "Used or rebuilt" (8460.31.00.40) and "Other" (8460.31.00.80), allow for distinctions based on the condition of the machine, with specific provisions for used or rebuilt equipment versus new or otherwise unclassified numerically controlled sharpening machines.