跳到内容 Essential CNC machining terms with clear, easy-to-understand definitions. From milling and turning to tolerances, materials, and surface finishes, this glossary helps you understand part specifications and communicate your custom machining requirements with confidence.
A recessed area machined into a part to reduce weight, hold components, or provide space for assembly.
Read moreA narrow, elongated groove machined into a part to guide movement, position components, or provide clearance.
Read moreA raised section of a part that provides extra material for mounting, locating, or supporting other components.
Read moreA thin, raised feature that strengthens a part and improves stiffness without significantly increasing its overall weight.
Read moreA thin section connecting thicker areas of a part, providing structural support while keeping overall weight low.
Read moreWall thickness is the distance between opposing wall surfaces; thin walls can bend or vibrate during machining.
Read moreA rounded internal transition between two surfaces that reduces stress concentration and removes a sharp corner.
Read moreThe radius of a rounded inside corner, which determines suitable cutter sizes and affects machining efficiency.
Read moreA beveled edge that replaces a sharp corner, making parts easier to assemble and safer to handle.
Read moreA hole that passes completely through a part, leaving both ends open for fasteners, alignment, or fluid flow.
Read moreA hole machined to a specified depth that stops inside the part without passing through the opposite surface.
Read moreA cylindrical recess with a flat bottom around a hole, allowing a fastener head to sit below the surface.
Read moreA conical recess at a hole opening that allows a countersunk screw head to sit flush with the surface.
Read moreA hole with internal threads, usually created by tapping or thread milling, that accepts a matching screw or bolt.
Read moreA recessed feature hidden behind another surface, requiring side access, a different tool orientation, or specialized tooling.
Read moreA pocket with substantial depth compared with its width, often requiring longer tools and careful chip removal.
Read moreThe ratio of a feature’s depth to its width or diameter, indicating potential machining difficulty and tooling requirements.
Read moreA small groove near a shoulder or thread end that provides clearance for tool movement or component assembly.
Read moreA slot machined into a shaft or hub that holds a key to transfer torque between connected components.
Read moreA series of ridges on a shaft that engage matching grooves in a hub to transmit torque.
Read moreA textured pattern formed on a surface to improve grip when holding, turning, or handling a part.
Read moreThe smallest detail a manufacturing process can reliably produce, depending on tool size, material, and required accuracy.
Read moreThe ability of a cutting tool to reach a feature without unwanted contact with surrounding geometry or fixtures.
Read moreThe practice of designing parts to simplify manufacturing, reduce production costs, and maintain required quality and functionality.
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