In machining, this particular characteristic refers to a recessed or indented space beneath a bigger diameter or projecting characteristic. Think about a mushroom; the underside of the cap could be analogous to this characteristic on a machined half. This configuration may be deliberately designed or unintentionally created attributable to device geometry or machining processes. A typical instance is discovered on shafts the place a groove is lower simply behind a shoulder or bearing floor.
This particular design factor serves a number of essential functions. It permits for clearance throughout meeting, accommodating mating elements with barely bigger dimensions or irregularities. It may possibly additionally act as a stress aid level, decreasing the chance of crack propagation. Moreover, this indentation facilitates the disengagement of tooling, like knurling wheels or broaches, stopping injury to the completed half. Traditionally, attaining this characteristic required specialised instruments or a number of machining operations. Advances in CNC expertise and tooling design have streamlined the method, making it extra environment friendly and exact.
