#machining

• Countersink — A mechanical device, machinery, or tool mounted on a machine tool (such as a drill press or milling machine), used for widening, deepening, or calibrating holes previously executed in metal, wood, or plastic. As an adjective, it describes any factor, substance, mechanism, or instrument fulfilling the structural function of increasing depth.
• Countersink — Serving to deepen or to create a depression; a specialized tool, device, or mechanism used in mechanical workshops for enlarging, finishing, or structurally calibrating holes previously drilled in metal or wood pieces. In an adjectival or archaic sense, it describes an element that produces a deep penetration or causes an increase in the depth of a surface or geometric structure.
• To ream — To enlarge, calibrate, or precisely finish a previously drilled cylindrical or conical hole in a piece of metal, wood, or other hard material, using a special tool called a reamer or on a boring machine. The purpose of this operation is to obtain a perfectly smooth inner surface with exact dimensions and minimal geometric tolerances to allow precise assembly of parts.
• Reaming — The act of reaming or boring and its result; a technological machining process of internal cylindrical or conical surfaces, executed to enlarge the diameter of an existing hole and to ensure extremely high dimensional precision and minimal surface roughness. This process is essential in machine manufacturing for calibrating cylinders, bearings, and bushings.
• To bore out — A rare, popular, or technical jargon variant for the verb 'a aleza'; the action of machining, enlarging, or finishing the interior of a cylindrical part, an engine cylinder, or a pipe using a cutting tool. Although it does not belong to the strict academic norm of standard literary Romanian, the term is currently used in the informal jargon of auto mechanics and turners in repair shops.
• Bored — Having undergone the process of boring or reaming; a cylinder, tube, or mechanical part whose internal surfaces have been machined by cutting with a reamer to achieve high dimensional accuracy and superior smoothness. In an extended sense, it describes the state of a geometric hole calibrated according to rigorous technical tolerance standards.
• Necked — Provided with a neck, groove, or structural recess; a technical part, profile, or mechanical element machined through cutting or die-stamping to feature a localized narrowing. This geometric detail is specifically engineered to permit precise mating with other subassemblies, to guide moving parts, or to ensure an optimal zone for controlled fracturing under predefined forces.
• Undercut — A recess, notch, or circular groove machined onto the surface of a cylindrical part, intended to locally reduce its diameter, delineate two distinct functional sections, or allow the passage of a cutting tool. In industrial terminology, it represents a stress-relief zone or a channel specifically designed to house seals, snap rings, or locking mechanisms.
• Roughing cutter — A metallic cutting tool, preliminary milling head, or rotary instrument used to perform an initial rough machining (roughing) before finishing a surface. In dentistry and dental technology, it represents a special bur used for the preliminary preparation of cavities or the initial grinding of prosthetic materials.
• Machining — A mechanical technological process of shaping a solid material (metal, wood, plastic) by successively removing the machining allowance in the form of chips, using specific cutting tools (lathe tools, milling cutters, drill bits), to obtain a part with well-defined geometric dimensions, shapes, and roughness.