Crank and Slider - Revision history

DT Online: Added links

2017-03-14T09:14:44Z

Added links

← Older revision		Revision as of 09:14, 14 March 2017
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	{\| cellpadding="5"		{\| cellpadding="5"
	\|-		\|-
	\| '''Plotting [[Loci]] on a Crank and Slider Mechanism'''		\| '''Plotting Loci on a [[Crank and Slider]] Mechanism'''
	\| <span style="color:#B00000">		\| <span style="color:#B00000">
	* Draw a schematic of the ~~crank~~ and ~~slider~~ and divide the ~~crank~~ rotation into a number of equal divisions ''(say, 12)''		* Draw a schematic of the '''[[Crank and Slider]]''' and divide the [https://en.wikipedia.org/wiki/Crank_(mechanism) '''Crank'''] rotation into a number of equal divisions ''(say, 12)''
	* Number the ~~crank~~ positions and, with radius set to the length of the connecting rod, strike arcs from each position along the horizontal line which the ~~piston~~ is constrained to slide along.		* Number the [https://en.wikipedia.org/wiki/Crank_(mechanism) '''Crank'''] positions and, with radius set to the length of the connecting rod, strike arcs from each position along the horizontal line which the [https://en.wikipedia.org/wiki/Piston '''Piston'''] is constrained to slide along.
	* If the requirement is for the '''~~[[Loci\|~~Locus]]''' of the centre of the ~~connecting rod~~, then mark these points on each position and join with a smooth curve as shown.		* If the requirement is for the '''Locus''' of the centre of the [https://en.wikipedia.org/wiki/Connecting_rod '''Connecting Rod'''], then mark these points on each position and join with a smooth curve as shown.
	* It may sometimes be necessary to draw in additional details of the mechanisms, to test clearances for example.		* It may sometimes be necessary to draw in additional details of the mechanisms, to test clearances for example.
	* '''[[Loci]]''' on parts of other mechanisms can be plotted using a similar process ''(i.e. draw the mechanism in different positions and connect plotted points to create the '''~~[[Loci\|~~Locus]]''')''.		* '''Loci''' on parts of other mechanisms can be plotted using a similar process ''(i.e. draw the mechanism in different positions and connect plotted points to create the '''Locus''')''.
	</span>		</span>
	\| [[File:LociCrankSlider.png \|350px\|right]]		\| [[File:LociCrankSlider.png \|350px\|right]]

DT Online: Added Loci

2017-03-14T09:03:21Z

Added Loci

← Older revision		Revision as of 09:03, 14 March 2017
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	An air compressor uses this principle in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.		An air compressor uses this principle in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.


			=====Loci=====

			It sometimes necessary to know the path traced, or '''[[Loci]]''', of pieces of machinery to check clearances, estimate the velocities at different parts of a linkage ''(perhaps to calculate [https://en.wikipedia.org/wiki/Momentum '''Momentum'''])'' or to design guarding for example. The general method is to draw the linkage or mechanism in several ‘freeze frame’ positions then draw a smooth curve through the plotted points.

			{\| cellpadding="5"
			\|-
			\| '''Plotting [[Loci]] on a Crank and Slider Mechanism'''
			\| <span style="color:#B00000">
			* Draw a schematic of the crank and slider and divide the crank rotation into a number of equal divisions ''(say, 12)''
			* Number the crank positions and, with radius set to the length of the connecting rod, strike arcs from each position along the horizontal line which the piston is constrained to slide along.
			* If the requirement is for the '''[[Loci\|Locus]]''' of the centre of the connecting rod, then mark these points on each position and join with a smooth curve as shown.
			* It may sometimes be necessary to draw in additional details of the mechanisms, to test clearances for example.
			* '''[[Loci]]''' on parts of other mechanisms can be plotted using a similar process ''(i.e. draw the mechanism in different positions and connect plotted points to create the '''[[Loci\|Locus]]''')''.
			</span>
			\| [[File:LociCrankSlider.png \|350px\|right]]


			[[File:LociPistonCrank2.png\|350px\|right]]
			\|}

DT Online at 08:31, 20 December 2016

2016-12-20T08:31:02Z

← Older revision		Revision as of 08:31, 20 December 2016
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	An air compressor uses this ~~principal~~ in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.		An air compressor uses this principle in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.

DT Online at 16:06, 3 September 2016

2016-09-03T16:06:14Z

← Older revision		Revision as of 16:06, 3 September 2016
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	\|-		\|-
	\| [https://youtu.be/Dv6m1AFejJ4 '''Crank and Slider'''] - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.		\| [https://youtu.be/Dv6m1AFejJ4 '''Crank and Slider'''] - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.
	\| {{#ev:youtube\|Dv6m1AFejJ4\|~~240x240~~\|right\|\|frame\|loop=1&autoplay=0&playlist=Dv6m1AFejJ4}}		\| {{#ev:youtube\|Dv6m1AFejJ4\|150x150\|right\|\|frame\|loop=1&autoplay=0&playlist=Dv6m1AFejJ4}}
	\| [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at the end of its stroke.		\| [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at the end of its stroke.
	\| {{#ev:youtube\|6c5ow2ped3Y\|~~240x240~~\|right\|\|frame\|loop=1&autoplay=0&playlist=6c5ow2ped3Y}}		\| {{#ev:youtube\|6c5ow2ped3Y\|150x150\|right\|\|frame\|loop=1&autoplay=0&playlist=6c5ow2ped3Y}}
	\|}		\|}

DT Online at 13:42, 28 August 2016

2016-08-28T13:42:26Z

← Older revision		Revision as of 13:42, 28 August 2016
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	\|-		\|-
	\| [https://youtu.be/Dv6m1AFejJ4 '''Crank and Slider'''] - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.		\| [https://youtu.be/Dv6m1AFejJ4 '''Crank and Slider'''] - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.
	\| {{#ev:youtube\|Dv6m1AFejJ4\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=Dv6m1AFejJ4}}		\| {{#ev:youtube\|Dv6m1AFejJ4\|240x240\|right\|\|frame\|loop=1&autoplay=0&playlist=Dv6m1AFejJ4}}
	\| [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at the end of its stroke.		\| [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at the end of its stroke.
	\| {{#ev:youtube\|6c5ow2ped3Y\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=6c5ow2ped3Y}}		\| {{#ev:youtube\|6c5ow2ped3Y\|240x240\|right\|\|frame\|loop=1&autoplay=0&playlist=6c5ow2ped3Y}}
	\|}		\|}

DT Online at 17:37, 27 August 2016

2016-08-27T17:37:57Z

← Older revision		Revision as of 17:37, 27 August 2016
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	=====Animations=====		=====Animations=====

			* Examples from '''[[2100 Animated Mechanical Mechanisms\|Nguyen Duc Thang's]]''' YouTube Channel '''[[2100 Animated Mechanical Mechanisms]]'''

	{\|		{\|
	\|-		\|-
	\| ~~'''[[2100 Animated Mechanical Mechanisms\|Nguyen Duc Thang's]]''' example of a~~ [https://youtu.be/Dv6m1AFejJ4 '''Crank and Slider'''] - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.		\| [https://youtu.be/Dv6m1AFejJ4 '''Crank and Slider'''] - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.
	\| {{#ev:youtube\|Dv6m1AFejJ4\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=Dv6m1AFejJ4}}		\| {{#ev:youtube\|Dv6m1AFejJ4\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=Dv6m1AFejJ4}}
	\| ~~'''[[2100 Animated Mechanical Mechanisms\|Nguyen Duc Thang's]]''' example of a~~ [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at the end of its stroke.		\| [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at the end of its stroke.
	\| {{#ev:youtube\|6c5ow2ped3Y\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=6c5ow2ped3Y}}		\| {{#ev:youtube\|6c5ow2ped3Y\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=6c5ow2ped3Y}}
	\|}		\|}

DT Online: Added animations

2016-08-26T12:19:14Z

Added animations

← Older revision		Revision as of 12:19, 26 August 2016
Line 15:		Line 15:
	An air compressor uses this principal in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.		An air compressor uses this principal in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.


			=====Animations=====

	{\|		{\|
	\|-		\|-
	\| ~~See~~ '''[[2100 Animated Mechanical Mechanisms\|Nguyen Duc Thang's]]''' example of a [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at its ~~right~~ stroke ~~end~~.		\| '''[[2100 Animated Mechanical Mechanisms\|Nguyen Duc Thang's]]''' example of a [https://youtu.be/Dv6m1AFejJ4 '''Crank and Slider'''] - the piston-rod is extended and works in a guide. The lower part of the connecting-rod is forked to permit the upper part of the piston-rod to pass between. So the piston is guided very well.
			\| {{#ev:youtube\|Dv6m1AFejJ4\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=Dv6m1AFejJ4}}
			\| '''[[2100 Animated Mechanical Mechanisms\|Nguyen Duc Thang's]]''' example of a [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at the end of its stroke.
	\| {{#ev:youtube\|6c5ow2ped3Y\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=6c5ow2ped3Y}}		\| {{#ev:youtube\|6c5ow2ped3Y\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=6c5ow2ped3Y}}
	\|}		\|}

DT Online: Added animation

2016-08-26T07:43:46Z

Added animation

← Older revision		Revision as of 07:43, 26 August 2016
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	[[File:~~MechanismsCrankandSlider~~.~~jpg~~\|200px\|right]]		[[File:Piston.gif\|200px\|right]]
			__TOC__


			=====Description=====

			A [https://en.wikipedia.org/wiki/Crank_%28mechanism%29 '''Crank and Slider'''] mechanism changes rotary to reciprocating motion or vice versa.


			=====Features and Applications=====

			In the car engine the '''[[Types of Motion\|reciprocating motion]]''' of the piston caused by exploding fuel is converted into '''[[Types of Motion\|rotary motion]]''' as the con-rod moves the crankshaft around.

	A [https://en.wikipedia.org/wiki/Crank_%28mechanism%29 '''Crank and Slider'''] mechanism changes rotary to reciprocating motion or vice versa. In the car engine the '''[[Types of Motion\|reciprocating motion]]''' of the piston caused by exploding fuel is converted into '''[[Types of Motion\|rotary motion]]''' as the con-rod moves the crankshaft around.

	An air compressor uses this principal in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.		An air compressor uses this principal in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.


			{\|
			\|-
			\| See '''[[2100 Animated Mechanical Mechanisms\|Nguyen Duc Thang's]]''' example of a [https://youtu.be/6c5ow2ped3Y '''Crank and Slider'''] in which the slider reciprocates and turns 90 deg. at its right stroke end.
			\| {{#ev:youtube\|6c5ow2ped3Y\|240x240\|right\|\|frame\|loop=1&autoplay=1&playlist=6c5ow2ped3Y}}
			\|}

			{{Mechanisms Buyers Guide}}

	[[Category:Secondary]]		[[Category:Secondary]]
	[[Category:Mechanisms]]		[[Category:Mechanisms]]

DT Online: Corrected links

2015-03-11T13:10:33Z

Corrected links

← Older revision		Revision as of 13:10, 11 March 2015
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	[[File:MechanismsCrankandSlider.jpg\|200px\|right]]		[[File:MechanismsCrankandSlider.jpg\|200px\|right]]

	A [https://en.wikipedia.org/wiki/Crank_%28mechanism%29 '''Crank and Slider'''] mechanism changes rotary to reciprocating motion or vice versa. In the car engine the '''[[reciprocating motion]]''' of the piston caused by exploding fuel is converted into '''[[rotary motion]]''' as the con-rod moves the crankshaft around.		A [https://en.wikipedia.org/wiki/Crank_%28mechanism%29 '''Crank and Slider'''] mechanism changes rotary to reciprocating motion or vice versa. In the car engine the '''[[Types of Motion\|reciprocating motion]]''' of the piston caused by exploding fuel is converted into '''[[Types of Motion\|rotary motion]]''' as the con-rod moves the crankshaft around.

	An air compressor uses this principal in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.		An air compressor uses this principal in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.

DT Online: Created Crank and Slider

2015-02-12T08:34:34Z

Created Crank and Slider

New page

[[File:MechanismsCrankandSlider.jpg|200px|right]]

A [https://en.wikipedia.org/wiki/Crank_%28mechanism%29 '''Crank and Slider'''] mechanism changes rotary to reciprocating motion or vice versa. In the car engine the '''[[reciprocating motion]]''' of the piston caused by exploding fuel is converted into '''[[rotary motion]]''' as the con-rod moves the crankshaft around.

An air compressor uses this principal in reverse - an electric motor turns the crankshaft and the piston moves up and down to compress the air.

[[Category:Secondary]]
[[Category:Mechanisms]]