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Machine element

From Wikipedia, the free encyclopedia
Elementary components used in the structure, controls, or mechanisms of a machine
NSK Support Roller cut (cropped)

Machine element orhardware refers to an elementary component of amachine. These elements consist of three basic types:

  1. structural components such as frame members,bearings,axles,splines,fasteners,seals, andlubricants,
  2. mechanisms thatcontrol movement in various ways such asgear trains,belt orchain drives,linkages,cam andfollower systems, includingbrakes andclutches, and
  3. control components such as buttons, switches, indicators, sensors, actuators and computer controllers.[1]

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 astyling 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 mostmachines.[2] Most arestandardized to common sizes, but customs are also common for specialized applications.[3]

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 thesimple machines may be described as machine elements, and many machine elements incorporate concepts of one or more simple machines. For example, aleadscrew incorporates ascrew thread, which is aninclined plane wrapped around acylinder.

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).

Structural elements

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  1. Beams,
  2. Struts,
  3. Bearings,
  4. Fasteners
  5. Keys,
  6. Splines,
  7. Cotter pin,
  8. Seals
  9. Machine guardings

Mechanical elements

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  1. Engine,
  2. Electric motor,
  3. Actuator,
  4. Shafts,
  5. Couplings
  6. Belt,
  7. Chain,
  8. Cable drives,
  9. Gear train,
  10. Clutch,
  11. Brake,
  12. Flywheel,
  13. Cam,
  14. follower systems,
  15. Linkage,
  16. Simple machine

Types

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See also

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References

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  1. ^Robert L. Norton,Machine Design, (4th Edition), Prentice-Hall, 2010
  2. ^Matthews, Clifford;American Society of Mechanical Engineers (2005),ASME engineer's data book (2nd ed.), ASME Press, p. 249,ISBN 978-0-7918-0229-8.
  3. ^abcdefghijBhandari, V. B. (2007),Design of machine elements (2nd ed.), Tata McGraw-Hill, p. 10,ISBN 978-0-07-061141-2.
  4. ^abcKlebanov, Boris M.; Barlam, David; Nystrom, Frederic E. (2008),Machine elements: life and design, CRC Press,ISBN 978-0-8493-9563-5.
  5. ^Niemann, Gustav; Hirt, Manfred:Maschinenelemente Springer, Berlin 1975, 1983.ISBN 0-387-06809-0.
  6. ^abSharma, C. S.; Purohit, Kamlesh (2004),Design of machine elements, PHI Learning, p. vii–ix,ISBN 978-81-203-1955-4.

External links

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