Mechanical Engineering Terms
Ball and Detent
A simple mechanical arrangement used to hold a moving part in a temporarily fixed position relative to another part. The ball slides within a bored cylinder, against the pressure of a spring, which pushes the ball against the detent, a hole of smaller diameter than the ball. When the hole is in line with the cylinder, the ball falls partially into the hole under spring pressure, holding the parts at that position. Additional force will push the ball back into its cylinder, compressing the spring, and allowing the parts to move.
Bearing
The part of a machine within which a rotating or sliding shaft is held. In some bearing types, balls or rollers are used between the bearing surfaces to reduce rolling friction
Bell crank
A pivoting double lever used to change the direction of applied motion
Cam
A mechanical device consisting of an eccentric or multiply curved wheel mounted on a rotating shaft, used to produce variable or reciprocating motion in another engaged or contacted part (cam follower).
Chamfer
A flat surface made by cutting off the edge or corner of a object (bevel) (v) the process of creating a chafer.
Core
To form the hollow part of a casting, using a solid form placed in the mold (n) The solid form used in the coring process, often made of wood, sand, or metal.
Coupling
A device used to connect two shafts together at their ends for the purpose of transmitting power. May be used to account for minor misalignment or for mitigating shock loads.
Die
One of a pair of hardened metal plates or impressing or forming desired shape. Also, a tool for cutting external threads.
Fixture
A device used to hold a workpiece while manufacturing operations are performed upon that workpiece.
Flange
A projecting rim or edge for fastening, stiffening or positioning.
stay tunned ....
