Gear Nomenclature - Revision history

DT Online at 19:31, 3 September 2016

2016-09-03T19:31:51Z

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	=====Description=====		=====Description=====

	Two smooth surfaced discs can be imagined to be in contact with each other such that one drives the other by friction. It is clear that when a load of any significance is applied the discs would slip. To avoid this problem, the surfaces are modified to have teeth which engage with each other. This is the basis of [https://en.wikipedia.org/wiki/Gear '''Gear'''] design.		Two smooth surfaced discs can be imagined to be in contact with each other such that one drives the other by friction. It is clear that when a load of any significance is applied the discs would slip. To avoid this problem, the surfaces are modified to have teeth which engage with each other. This is the basis of [https://en.wikipedia.org/wiki/Gear '''Gear'''] design.


	=====Terms=====		=====Terms=====

	* Cicles representing the two imaginery discs are known as '''Pitch Circles''' and their diameters are the '''Pitch Circle Diameters''' or '''PCDs''' ''(aka Reference Diameters)''.		* Cicles representing the two imaginery discs are known as '''Pitch Circles''' and their diameters are the '''Pitch Circle Diameters''' or '''PCDs''' ''(aka Reference Diameters)''.
	* Gear teeth are created by:		* Gear teeth are created by:
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	* The diameters of the '''Pitch Circles''' can be used when calculating '''[[Velocity Ratio]]''' and is given as: '''Driver PCD ÷ Driven PCD'''.		* The diameters of the '''Pitch Circles''' can be used when calculating '''[[Velocity Ratio]]''' and is given as: '''Driver PCD ÷ Driven PCD'''.
	* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.		* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.


	More details including descriptions of other aspects of gear design can be obtained by [https://en.wikipedia.org/wiki/Gear '''further reading '''].		More details including descriptions of other aspects of gear design can be obtained by [https://en.wikipedia.org/wiki/Gear '''further reading '''].

DT Online: Added Template

2016-05-24T10:00:12Z

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← Older revision		Revision as of 10:00, 24 May 2016
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	[[File:GearNomenclature.png\|500px\|right]]		[[File:GearNomenclature.png\|500px\|right]]
			__TOC__

			=====Description=====
	Two smooth surfaced discs can be imagined to be in contact with each other such that one drives the other by friction. It is clear that when a load of any significance is applied the discs would slip. To avoid this problem, the surfaces are modified to have teeth which engage with each other. This is the basis of [https://en.wikipedia.org/wiki/Gear '''Gear'''] design.		Two smooth surfaced discs can be imagined to be in contact with each other such that one drives the other by friction. It is clear that when a load of any significance is applied the discs would slip. To avoid this problem, the surfaces are modified to have teeth which engage with each other. This is the basis of [https://en.wikipedia.org/wiki/Gear '''Gear'''] design.

			=====Terms=====
	* Cicles representing the two imaginery discs are known as '''Pitch Circles''' and their diameters are the '''Pitch Circle Diameters''' or '''PCDs''' ''(aka Reference Diameters)''.		* Cicles representing the two imaginery discs are known as '''Pitch Circles''' and their diameters are the '''Pitch Circle Diameters''' or '''PCDs''' ''(aka Reference Diameters)''.
	* Gear teeth are created by:		* Gear teeth are created by:
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			{{Gears Buyers Guide}}

	[[Category:Gears]]		[[Category:Gears]]
	[[Category:Terminology]]		[[Category:Terminology]]

DT Online at 09:55, 24 May 2016

2016-05-24T09:55:51Z

← Older revision		Revision as of 09:55, 24 May 2016
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	* Gear teeth will only '''Mesh''' if they are the same size in that the distances around the circumferences of their '''PCDs''' must be equal. This distance is known as the '''Circular Pitch'''.		* Gear teeth will only '''Mesh''' if they are the same size in that the distances around the circumferences of their '''PCDs''' must be equal. This distance is known as the '''Circular Pitch'''.
	* The size of gear teeth is more easily calculated by dividing the diameter of the '''Pitch Circle''' by the number of gear teeth. This is known as the '''Modulus''' or '''Module (m)''' and must be the same for any meshing gears.		* The size of gear teeth is more easily calculated by dividing the diameter of the '''Pitch Circle''' by the number of gear teeth. This is known as the '''Modulus''' or '''Module (m)''' and must be the same for any meshing gears.
	* ~~It is the~~ diameters of the '''Pitch Circles''' ~~which~~ can be used when calculating '''[[Velocity Ratio]]'''.		* The diameters of the '''Pitch Circles''' can be used when calculating '''[[Velocity Ratio]]''' and is given as: '''Driver PCD ÷ Driven PCD'''.
	* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.		* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.

DT Online at 09:48, 24 May 2016

2016-05-24T09:48:58Z

← Older revision		Revision as of 09:48, 24 May 2016
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	* Gear teeth will only '''Mesh''' if they are the same size in that the distances around the circumferences of their '''PCDs''' must be equal. This distance is known as the '''Circular Pitch'''.		* Gear teeth will only '''Mesh''' if they are the same size in that the distances around the circumferences of their '''PCDs''' must be equal. This distance is known as the '''Circular Pitch'''.
	* The size of gear teeth is more easily calculated by dividing the diameter of the '''Pitch Circle''' by the number of gear teeth. This is known as the '''Modulus''' or '''Module (m)''' and must be the same for any meshing gears.		* The size of gear teeth is more easily calculated by dividing the diameter of the '''Pitch Circle''' by the number of gear teeth. This is known as the '''Modulus''' or '''Module (m)''' and must be the same for any meshing gears.
			* It is the diameters of the '''Pitch Circles''' which can be used when calculating '''[[Velocity Ratio]]'''.
	* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.		* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.

DT Online at 07:47, 24 May 2016

2016-05-24T07:47:04Z

← Older revision		Revision as of 07:47, 24 May 2016
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	* The size of gear teeth is more easily calculated by dividing the diameter of the '''Pitch Circle''' by the number of gear teeth. This is known as the '''Modulus''' or '''Module (m)''' and must be the same for any meshing gears.		* The size of gear teeth is more easily calculated by dividing the diameter of the '''Pitch Circle''' by the number of gear teeth. This is known as the '''Modulus''' or '''Module (m)''' and must be the same for any meshing gears.
	* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.		* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.

			More details including descriptions of other aspects of gear design can be obtained by [https://en.wikipedia.org/wiki/Gear '''further reading '''].

DT Online: Added Text

2016-05-24T06:09:32Z

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← Older revision		Revision as of 06:09, 24 May 2016
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	[[File:GearNomenclature.png\|500px\|right]]		[[File:GearNomenclature.png\|500px\|right]]
			Two smooth surfaced discs can be imagined to be in contact with each other such that one drives the other by friction. It is clear that when a load of any significance is applied the discs would slip. To avoid this problem, the surfaces are modified to have teeth which engage with each other. This is the basis of [https://en.wikipedia.org/wiki/Gear '''Gear'''] design.
			* Cicles representing the two imaginery discs are known as '''Pitch Circles''' and their diameters are the '''Pitch Circle Diameters''' or '''PCDs''' ''(aka Reference Diameters)''.
			* Gear teeth are created by:
			** (i) cutting into the '''Pitch Circles''' - the depth of cut is known as the '''Dedendum''' and
			** (ii) adding material on top of the '''Pitch Circles''' - the distance between the '''PCD''' and the outer diameter of the gear is known as the '''Addendum'''.
			* Gear teeth will only '''Mesh''' if they are the same size in that the distances around the circumferences of their '''PCDs''' must be equal. This distance is known as the '''Circular Pitch'''.
			* The size of gear teeth is more easily calculated by dividing the diameter of the '''Pitch Circle''' by the number of gear teeth. This is known as the '''Modulus''' or '''Module (m)''' and must be the same for any meshing gears.
			* The curve of the gear teeth is an '''[[Involute]]''', chosen to provide a true rolling contact without slipping as the gears engage.



	[[Category:Gears]]		[[Category:Gears]]
			[[Category:Terminology]]

DT Online at 22:05, 23 May 2016

2016-05-23T22:05:20Z

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	[[File:GearNomenclature~~.png~~.png\|500px\|right]]		[[File:GearNomenclature.png\|500px\|right]]


	[[Category:Gears]]		[[Category:Gears]]

DT Online: Created article

2016-05-23T22:04:18Z

Created article

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[[File:GearNomenclature.png.png|500px|right]]

[[Category:Gears]]