ReChain positive locking mechanism - Revision history

Apm: added the ReChain banner

2025-07-18T16:07:02Z

added the ReChain banner

← Older revision		Revision as of 18:07, 18 July 2025
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			{{ReChain}}

	An energetic barrier against loosening of a mechanical connection. <br>		An energetic barrier against loosening of a mechanical connection. <br>

Apm: /* Related */ added link to '''Positive locking'''

2025-07-18T14:02:50Z

Related: added link to '''Positive locking'''

← Older revision		Revision as of 16:02, 18 July 2025
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	= Related =		= Related =

			* '''[[Scale agnostic design principles]]''' => '''[[Positive locking]]'''
			----
	* [[ReChain]]		* [[ReChain]]
	* [[ReChain tensioner]]		* [[ReChain tensioner]]
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	----		----
	* [[List of machine elements]]		* [[List of machine elements]]
	~~----~~
	* '''[[Scale agnostic design principles]]'''

	= External links =		= External links =

	* https://en.wikipedia.org/wiki/Positive_locking_device		* https://en.wikipedia.org/wiki/Positive_locking_device

Apm: /* Related / added link to '''Scale agnostic design principles'''

2025-07-18T14:00:57Z

Related: added link to * '''Scale agnostic design principles'''

← Older revision		Revision as of 16:00, 18 July 2025
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	----		----
	* [[List of machine elements]]		* [[List of machine elements]]
			----
			* '''[[Scale agnostic design principles]]'''

	= External links =		= External links =

	* https://en.wikipedia.org/wiki/Positive_locking_device		* https://en.wikipedia.org/wiki/Positive_locking_device

Apm: /* Indexed nut locking mechanisms */

2025-05-13T13:26:04Z

Indexed nut locking mechanisms

← Older revision		Revision as of 15:26, 13 May 2025
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	= Concrete designs =		= Concrete designs =

	== Indexed nut locking mechanisms ==		== Indexed nut positive locking mechanisms ==

	=== How it works ===		=== How it works ===

Apm at 13:24, 13 May 2025

2025-05-13T13:24:56Z

← Older revision		Revision as of 15:24, 13 May 2025
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	An energetic barrier against loosening of a mechanical connection. <br>		An energetic barrier against loosening of a mechanical connection. <br>
	There are many ways to do this both in basic principle and concrete geometry of design. <br>		There are many ways to do this both in basic principle and concrete geometry of design. <br>

			'''Macroscale only:''' <br>
			* via magnetic holding forces

	'''Macroscale and nanoscale:''' <br>		'''Macroscale and nanoscale:''' <br>
	* via clip-locks (may be energetically irreversible snapping or reversibly silent operable) <br>		* via clip-locks (may be energetically irreversible snapping or reversibly silent operable) <br>
	* via magnetic holding forces

	'''Nanoscale:''' <br>		'''Nanoscale only:''' <br>
	* via [[van der Waals force]] (possibly notably simplifying nanomechanical system designs) <br> Related: [[Intercrystolecular snapping modes]]		* via [[van der Waals force]] (possibly notably simplifying nanomechanical system designs) <br> Related: [[Intercrystolecular snapping modes]]
	* via commensurately interdigitating surfaces acting as indexed notching with energy >>kT, <br>(i.e. [[crystolecule]] parts melt long before they start slipping on each other in random brownian diffusion like motion)		* via commensurately interdigitating surfaces acting as indexed notching with energy >>kT, <br>(i.e. [[crystolecule]] parts melt long before they start slipping on each other in random brownian diffusion like motion)

Apm: some elaborations in the intro

2025-05-13T13:24:16Z

some elaborations in the intro

← Older revision		Revision as of 15:24, 13 May 2025
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	'''Nanoscale:''' <br>		'''Nanoscale:''' <br>
	* via [[van der Waals force]] (possibly notably simplifying nanomechanical system designs) <br>		* via [[van der Waals force]] (possibly notably simplifying nanomechanical system designs) <br> Related: [[Intercrystolecular snapping modes]]
	* via commensurately interdigitating ~~surfacesacting~~ as indexed notching with energy >>kT		* via commensurately interdigitating surfaces acting as indexed notching with energy >>kT, <br>(i.e. [[crystolecule]] parts melt long before they start slipping on each other in random brownian diffusion like motion)

	= Concrete designs =		= Concrete designs =

Apm: bullet points

2025-05-13T13:20:13Z

bullet points

← Older revision		Revision as of 15:20, 13 May 2025
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	There are many ways to do this both in basic principle and concrete geometry of design. <br>		There are many ways to do this both in basic principle and concrete geometry of design. <br>

	'''Macroscale and nanoscale:'''		'''Macroscale and nanoscale:''' <br>
	~~– Via~~ clip-locks (may be energetically irreversible snapping or reversibly silent operable) <br>		* via clip-locks (may be energetically irreversible snapping or reversibly silent operable) <br>
	~~– Via~~ magnetic holding forces		* via magnetic holding forces

	'''Nanoscale:'''		'''Nanoscale:''' <br>
	~~– Via~~ [[van der Waals force]] (possibly notably simplifying nanomechanical system designs) <br>		* via [[van der Waals force]] (possibly notably simplifying nanomechanical system designs) <br>
	– via commensurately interdigitating surfacesacting as indexed notching with energy >>kT		* via commensurately interdigitating surfacesacting as indexed notching with energy >>kT

	= Concrete designs =		= Concrete designs =

Apm: Improved on the intro a bit

2025-05-13T13:19:33Z

Improved on the intro a bit

← Older revision		Revision as of 15:19, 13 May 2025
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	An energetic barrier against loosening of a connection. <br>		An energetic barrier against loosening of a mechanical connection. <br>
	There are many ways to do this both in basic principle and concrete geometry of design. <br>		There are many ways to do this both in basic principle and concrete geometry of design. <br>

	– Via ~~cliplocks~~ (may be energetically irreversible snapping or ~~reversible~~ silent ~~opereatable~~) <br>		'''Macroscale and nanoscale:'''
	– Via van der Waals force ~~at nanoscale~~ possibly simplifying designs ~~(may be combined with commensurately interdigitating surfaces~~) <br>		– Via clip-locks (may be energetically irreversible snapping or reversibly silent operable) <br>
			– Via magnetic holding forces

			'''Nanoscale:'''
			– Via [[van der Waals force]] (possibly notably simplifying nanomechanical system designs) <br>
			– via commensurately interdigitating surfacesacting as indexed notching with energy >>kT

	= Concrete designs =		= Concrete designs =

Apm: /* Usage */ made it a bit more cohesive, seems this is a bit too off-topic and a bit to much here

2025-05-13T13:13:37Z

Usage: made it a bit more cohesive, seems this is a bit too off-topic and a bit to much here

← Older revision		Revision as of 15:13, 13 May 2025
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	– change the spacer to lock to base via a [[Hirth joint]] interface rather than locking to the screw <br>		– change the spacer to lock to base via a [[Hirth joint]] interface rather than locking to the screw <br>

	=== Usage ===		=== Usage examples ===

	[[File:2023-03-21 positive-locking-application-example-handsketch.jpg\|512px\|thumb\|right\|Example usage here as a connector fro parts manufactured (printed) in different orientations. Related topic: [[Benefits of post assembly over in place manufacturing]].]]		[[File:2023-03-21 positive-locking-application-example-handsketch.jpg\|512px\|thumb\|right\|Example usage here as a connector fro parts manufactured (printed) in different orientations. Related topic: [[Benefits of post assembly over in place manufacturing]].]]

	'''~~The idea is to avoid using the screw directly for tensioning~~''' ~~to:~~ <br>		'''Usage as a [[ReChain force hydrant]]''' <br>
	~~– avoid application of high torques to the structure <br>~~		for tensioning a [[ReChain corechain]] in a [[ReCahin strut]]:
	~~– avoid the necessity to either transmit high forces or complex big gearing mechanisms at an end-effector <br>~~

	~~{{wikitodo\| add scan~~ of ~~paper sketch here …}~~		The idea in this specific context is to <br>
			avoid using the screw A directly for tensioning to: <br>
			– avoid application of high torques to the larger global structure <br>
			– avoid the necessity to transmit high forces to a frame assembling end-effector <br>
			– avoid the necessity of complex big gearing mechanisms at an frame assembling end-effector <br>

	'''~~This hall work as follows~~:''' <br>		'''Detailed description:''' <br>
	~~– a~~ second nut B ~~in a~~ tool/end-effector gets screwed onto the screw (~~pushing back~~ the lock-ring) ~~<br>~~		A specialized robotic end-effector pushes off the lock ring but
	– a nonlinear high leverage double hinge ~~mechanism pushes screw B and lock-ring (or better base~~) ~~apart <br>~~		before release of nut A into "freewheeling" (out of [[machine phase]])
	~~– … <br>~~		the end-effector locks nut A to it's own internal wrench ring A.
			A second nut B inside the tool/end-effector gets (with no present counter-force)
			screwed onto the still overtsanding part of the screw (via internal wrench ring B), then gets locked.
			This second nut B (as part of the (de)tensioning end-effector) will serve as a handle to
			pull on with high force and thereby remove all tension load that is present on nut, A making it easy to turn.
			Pulling on screw B (with a counter-push on the lock-ring or the hull segment surface of the frame system behind)
			can be accomplished by a a high mechanical advantage mechanism inside the specialized (de)tensioning end-effectior
			(e.g. a nonlinear high mechanical leverage double hinge)
			Alternating operation of the two nuts A and B allows for arbitrary long range tensioning.

	~~For details see: [[ReChain force hydrant]]~~		{{wikitodo\|This needs visualizations. Add scan of paper sketch here …}}

	== Clip on indexed nut locking mechanism ==		== Clip on indexed nut locking mechanism ==

Apm: /* Concrete designs */

2025-05-13T12:37:25Z

Concrete designs

← Older revision		Revision as of 14:37, 13 May 2025
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	For details see: [[ReChain force hydrant]]		For details see: [[ReChain force hydrant]]

			== Clip on indexed nut locking mechanism ==

			{{wikitodo\|Add image and description. Pros & cons.}}

	= Related =		= Related =