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Concept
Pièce mécanique
Résumé
Machine element or hardware refers to an elementary component of a machine. These elements consist of three basic types:
structural components such as frame members, bearings, axles, splines, fasteners, seals, and lubricants,
mechanisms that control movement in various ways such as gear trains, belt or chain drives, linkages, cam and follower systems, including brakes and clutches, and
control components such as buttons, switches, indicators, sensors, actuators and computer controllers.
While generally not considered to be a machine element, the shape, texture and color of covers are an important part of a machine that provide a styling and operational interface between the mechanical components of a machine and its users.
Machine elements are basic mechanical parts and features used as the building blocks of most machines. Most are standardized to common sizes, but customs are also common for specialized applications.
Machine elements may be features of a part (such as screw threads or integral plain bearings) or they may be discrete parts in and of themselves such as wheels, axles, pulleys, rolling-element bearings, or gears. All of the simple machines may be described as machine elements, and many machine elements incorporate concepts of one or more simple machines. For example, a leadscrew incorporates a screw thread, which is an inclined plane wrapped around a cylinder.
Many mechanical design, invention, and engineering tasks involve a knowledge of various machine elements and an intelligent and creative combining of these elements into a component or assembly that fills a need (serves an application).
Beams, Struts
Bearings
Fasteners
Keys, Splines and Cotter pin
Seals
Machine guardings
Engine, Electric motor, Actuator
Shafts
Couplings
Belt, Chain, Cable drives
Gear train
Clutch
Brake
Flywheel
Cam and follower systems
Linkage
Simple machine
Shafts
Coupling
Key
Spline
Bearing
Roller bearing
Plain bearing
Thrust bearing
Ball bearing
Linear bearing
Pillow block
Gears
Spur gear
Helical gear
Worm gear
Herringbon
Source officielle
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