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Gear Bearing
A gear bearing is a type of rolling-element bearing similar to epicyclic gearing. Gear bearings consist of a number of smaller 'satellite' gears which revolve around the center of the bearing along a track on the outsides of the internal and satellite gears, and on the inside of the external gear. Each gear is in between two concentric rings. Therefore, the widths of the satellite gears must all be the same. Engagement In order for the surfaces to provide efficient axial meshing, the teeth must either be beveled or made with engagement. This avoids misalignment, sticking, and reduces sliding friction in the bearing. For instance, the illustrations present implementations of bearing gears with beveled teeth and rollers on their adjacent end faces as well as a herringbone engagement to provide minimal axial shift due to opposite sloping teeth. Work Neglecting clearance and assuming perfect accuracy, the engagement of bearing gears is aimed at maximum rolling with minimum sl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Bearing View
A gear or gearwheel is a rotating machine part typically used to transmit rotational motion and/or torque by means of a series of teeth that engage with compatible teeth of another gear or other part. The teeth can be integral saliences or cavities machined on the part, or separate pegs inserted into it. In the latter case, the gear is usually called a cogwheel. A cog may be one of those pegsDefinition of "cog" in the ''Oxford Learner's Dictionary'' online. Accessed on 2024-07-29.Definition of "cog" in the ''Merriam-Webster Dictionary'' online. Accessed on 2024-07-29. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling-element Bearing
In mechanical engineering, a rolling-element bearing, also known as a rolling bearing,ISO 15 is a bearing (mechanical), bearing which carries a load by placing rolling elements (such as balls, cylinders, or cones) between two concentric, Groove (engineering), grooved rings called Race (bearing), races. The relative motion of the races causes the rolling elements to rolling, roll with very little rolling resistance and with little sliding (motion), sliding. One of the earliest and best-known rolling-element bearings is a set of logs laid on the ground with a large stone block on top. As the stone is pulled, the logs roll along the ground with little sliding friction. As each log comes out the back, it is moved to the front where the block then rolls onto it. It is possible to imitate such a bearing by placing several pens or pencils on a table and placing an item on top of them. See "bearing (mechanical), bearings" for more on the historical development of bearings. A rolling el ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epicyclic Gearing
An epicyclic gear train (also known as a planetary gearset) is a gear reduction assembly consisting of two gears mounted so that the center of one gear (the "planet") revolves around the center of the other (the "sun"). A carrier connects the centers of the two gears and rotates, to carry the planet gear(s) around the sun gear. The planet and sun gears mesh so that their pitch circles roll without slip. If the sun gear is held fixed, then a point on the pitch circle of the planet gear traces an epicycloid curve. An epicyclic gear train can be assembled so the planet gear rolls on the inside of the pitch circle of an outer gear ring, or ring gear, sometimes called an ''annulus gear''. Such an assembly of a planet engaging both a sun gear and a ring gear is called a planetary gear train.J. J. Uicker, G. R. Pennock and J. E. Shigley, 2003, ''Theory of Machines and Mechanisms,'' Oxford University Press, New York.B. Paul, 1979, ''Kinematics and Dynamics of Planar Machinery'', Pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gear Bearing
A gear bearing is a type of rolling-element bearing similar to epicyclic gearing. Gear bearings consist of a number of smaller 'satellite' gears which revolve around the center of the bearing along a track on the outsides of the internal and satellite gears, and on the inside of the external gear. Each gear is in between two concentric rings. Therefore, the widths of the satellite gears must all be the same. Engagement In order for the surfaces to provide efficient axial meshing, the teeth must either be beveled or made with engagement. This avoids misalignment, sticking, and reduces sliding friction in the bearing. For instance, the illustrations present implementations of bearing gears with beveled teeth and rollers on their adjacent end faces as well as a herringbone engagement to provide minimal axial shift due to opposite sloping teeth. Work Neglecting clearance and assuming perfect accuracy, the engagement of bearing gears is aimed at maximum rolling with minimum sl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skew Teeth Bearing Gear
Skew may refer to: In mathematics * Skew lines, neither parallel nor intersecting. * Skew normal distribution, a probability distribution * Skew field or division ring * Skew-Hermitian matrix * Skew lattice * Skew polygon, whose vertices do not lie on a plane * Infinite skew polyhedron * Skew-symmetric graph * Skew-symmetric matrix * Skew tableau, a generalization of Young tableaux * Skewness, a measure of the asymmetry of a probability distribution * Shear mapping In science and technology *Skew, also synclinal or gauche in alkane stereochemistry *Skew ray (optics), an optical path not in a plane of symmetry * Skew arch, not at a right angle In computing * Clock skew * Transitive data skew, an issue of data synchronization In telecommunications * Skew (fax), unstraightness * Skew (antenna) a method to improve the horizontal radiation pattern Other uses * Volatility skew, in finance, a downward-sloping volatility smile * SKEW, the ticker symbol for the CBOE Skew Index See als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herringbone Bearing Gear
Herringbone may refer to: *Herring-Bone (card game), a game of patience *Herringbone (cloth), a woven pattern of tweed or twill cloth *Herringbone (formation), a type of military formation *Herringbone (horse) (1940–1961), a Thoroughbred racehorse *Herringbone cross-stratification, a sedimentary structure in geology that is formed from back-and-forth tidal water flow *Herringbone gear, a type of gear *Herringbone pattern, a pattern of floor tiling or paving *Herringbone seating, a pattern of airliner seating *A bonding pattern of brickwork, also known as opus spicatum *Herringbone stitch *A type of braided hairstyle, which is also known as a fishtail braid *A distortion pattern from deinterlacing video called mouse teeth *A method of counting used with the unary numeral system *A technique of moving one's skis while cross-country skiing * Herringbone milking shed *Herringbone, another name for the medical condition scintillating scotoma *"Herringbone", a song by Department of Ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sliding Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. Types of friction include dry, fluid, lubricated, skin, and internal -- an incomplete list. The study of the processes involved is called tribology, and has a history of more than 2000 years. Friction can have dramatic consequences, as illustrated by the use of friction created by rubbing pieces of wood together to start a fire. Another important consequence of many types of friction can be wear, which may lead to performance degradation or damage to components. It is known that frictional energy losses account for about 20% of the total energy expenditure of the world. As briefly discussed later, there are many different contributors to the retarding force in friction, ranging from asperity deformation to the generation of charges and changes in local structure. When two bodies in contact move relative to each other, due to these various ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Expansion Joint
A expansion joint, or movement joint, is an assembly designed to hold parts together while safely absorbing temperature-induced expansion and contraction of building materials. They are commonly found between sections of buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures. Building faces, concrete slabs, and pipelines expand and contract due to warming and cooling from seasonal variation, or due to other heat sources. Before expansion joint gaps were built into these structures, they would crack under the stress induced. Bridge expansion joints Bridge expansion joints are designed to allow for continuous traffic between structures while accommodating movement, shrinkage, and temperature variations on reinforced and prestressed concrete, composite, and steel structures. They stop the bridge from bending out of place in extreme conditions, and also allow enough vertical movement to permit bearing replacement without the need to dismant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kingsgate Bridge
Kingsgate Bridge is a reinforced concrete construction footbridge across the River Wear, in Durham, England, Durham, England. It is a Grade I listed building. It was personally designed in 1963 by Ove Arup, the last structure he ever designed. Kingsgate Bridge connects Bow Lane on the peninsula in the centre of Durham to Dunelm House on New Elvet, which building Arup's studio also contributed, and opened in 1966. Kingsgate Bridge is thought to have been one of Arup's favourite designs of all: he had spent many hours working on every detail of the plans. Its construction was unusual; the two halves were each built parallel to the river, then rotated through 90° to make the crossing. The meeting point of the two halves is marked by a simple bronze expansion joint using a linear gear bearing. In 1965, the bridge was the winner of the Civic Trust Award. In 1993, it won the Certificate of Outstanding Performance (Mature Structures Category) of the Concrete Society. A bust of Arup, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolling-element Bearings
In mechanical engineering, a rolling-element bearing, also known as a rolling bearing,ISO 15 is a bearing which carries a load by placing rolling elements (such as balls, cylinders, or cones) between two concentric, grooved rings called races. The relative motion of the races causes the rolling elements to roll with very little rolling resistance and with little sliding. One of the earliest and best-known rolling-element bearings is a set of logs laid on the ground with a large stone block on top. As the stone is pulled, the logs roll along the ground with little sliding friction. As each log comes out the back, it is moved to the front where the block then rolls onto it. It is possible to imitate such a bearing by placing several pens or pencils on a table and placing an item on top of them. See " bearings" for more on the historical development of bearings. A rolling element rotary bearing uses a shaft in a much larger hole, and spheres or cylinders called "rollers" tig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gears
A gear or gearwheel is a rotating machine element, machine part typically used to transmit rotation, rotational motion and/or torque by means of a series of teeth that engage with compatible teeth of another gear or other part. The teeth can be integral saliences or cavities machining, machined on the part, or separate pegs inserted into it. In the latter case, the gear is usually called a cogwheel. A cog may be one of those pegsDefinition of "cog" in the ''Oxford Learner's Dictionary'' online. Accessed on 2024-07-29.Definition of "cog" in the ''Merriam-Webster Dictionary'' online. Accessed on 2024-07-29. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
