Cold Saw/V1 Design Rationale/Hold System - Revision history

YK at 19:37, 11 June 2012

2012-06-11T19:37:37Z

← Older revision		Revision as of 19:37, 11 June 2012
Line 12:		Line 12:

	[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Hold_System/Base Base]		[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Hold_System/Base Base]

	~~=Auto-Centering Vise=~~

	~~Improves cut quality and fits more workpiece sizes and shapes'''~~

	~~[[Image: ColdSawV1Clamp.png]]~~

	Auto-centering occurs because the 2 moving blocks move towards and away from the center when the handle is rotated one way or the other. The handle is welded at its center to a threaded rod; when the threaded rod rotates, the left-handed nut and right-handed nut move relative to the threaded rod. The threaded rod is held in place relative to the fixed block by shaft collars. Because the threaded rod does not move relative to the fixed block, the nuts must move relative to the fixed block. The nuts are welded to the outside faces of the moving blocks such that when the threaded rod rotates, the nuts, and hence the moving blocks, move relative to the fixed block.

	~~The shaft collars prevent the shafts and threaded rod from moving under friction and handle rotation, respectively.~~

	~~The thrust washers minimize friction caused by the rotation of the threaded rod's shaft collars under clamping tension.~~

	Cut Location Notes: If the cut occurs at the center of the clamping volume, we achieve maximum clamping rigidity and optimal vise dimensions to facilitate angled cuts (because the vise needs a wide mouth for angled cuts, better to go wide from the center than anywhere else for maximum rigidity and dimensional uniformity).

	~~Cut Depth Notes: At all possible cut angles, the blade must not contact the vise.~~

	~~Vise Dimensional Notes: The vise achieves maximum rigidity and minimum material usage when its clamping volume is as close to its mounting surface as possible.~~

	~~=Feature: Adjustable and Removable Vise Jaws=~~

	*'''Adjustable and Removable Vise Jaws''' (to accommodate variety of workpiece shapes and dimensions)

	~~[[Image: ColdSawV1ViseJaws.png]]~~

YK at 19:37, 11 June 2012

2012-06-11T19:37:17Z

← Older revision		Revision as of 19:37, 11 June 2012
Line 2:		Line 2:

	*The hold system should be rigid relative to the mounting surface of the Cold Saw such that modularity exists for automatic linear feed from the side. If the hold system was loose or meant to turn, the linear feed system would have to rotate precisely as well- given the high weight and low mechanical advantage associated with such an operation, a moving hold system is suboptimal relative to a moving blade rotation system.		*The hold system should be rigid relative to the mounting surface of the Cold Saw such that modularity exists for automatic linear feed from the side. If the hold system was loose or meant to turn, the linear feed system would have to rotate precisely as well- given the high weight and low mechanical advantage associated with such an operation, a moving hold system is suboptimal relative to a moving blade rotation system.

			*If a part of the Cold Saw has high rigidity with contact on the mounting surface, then superior mounting rigidity is achieved. In addition, the swivel system will require a surface to slide on and a surface to clamp onto, hence a rigid base (a plate would be effective) is ideal for the Cold Saw as opposed to mounting the hold system directly to the Cold Saw's mounting surface.

			*The remaining aspect of the hold system, the mechanism to clamp the workpiece, can be called the vise.

			=Concepts=

			[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Hold_System/Vise Vise]

			[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Hold_System/Base Base]

	=Auto-Centering Vise=		=Auto-Centering Vise=

YK at 16:43, 11 June 2012

2012-06-11T16:43:12Z

← Older revision		Revision as of 16:43, 11 June 2012
Line 1:		Line 1:
	*~~'''~~Auto-Centering Vise~~: improves~~ cut quality and fits more workpiece sizes and shapes'''		=Hold System Notes=

			*The hold system should be rigid relative to the mounting surface of the Cold Saw such that modularity exists for automatic linear feed from the side. If the hold system was loose or meant to turn, the linear feed system would have to rotate precisely as well- given the high weight and low mechanical advantage associated with such an operation, a moving hold system is suboptimal relative to a moving blade rotation system.

			=Auto-Centering Vise=

			Improves cut quality and fits more workpiece sizes and shapes'''

	[[Image: ColdSawV1Clamp.png]]		[[Image: ColdSawV1Clamp.png]]

YK at 18:34, 8 June 2012

2012-06-08T18:34:15Z

← Older revision		Revision as of 18:34, 8 June 2012
Line 14:		Line 14:

	Vise Dimensional Notes: The vise achieves maximum rigidity and minimum material usage when its clamping volume is as close to its mounting surface as possible.		Vise Dimensional Notes: The vise achieves maximum rigidity and minimum material usage when its clamping volume is as close to its mounting surface as possible.

			=Feature: Adjustable and Removable Vise Jaws=

			*'''Adjustable and Removable Vise Jaws''' (to accommodate variety of workpiece shapes and dimensions)

			[[Image: ColdSawV1ViseJaws.png]]

YK at 18:32, 8 June 2012

2012-06-08T18:32:13Z

← Older revision		Revision as of 18:32, 8 June 2012
Line 1:		Line 1:
	*'''Auto-Centering Vise: improves cut quality and ~~to fit~~ more workpiece sizes and shapes'''		*'''Auto-Centering Vise: improves cut quality and fits more workpiece sizes and shapes'''

	[[Image: ColdSawV1Clamp.png]]		[[Image: ColdSawV1Clamp.png]]

	~~Shaft Collar~~ and ~~Thrust Washer Notes:~~ The shaft collars prevent the shafts and threaded rod from moving under friction and handle rotation, respectively. The thrust washers minimize friction caused by the rotation of the threaded rod's shaft collars under clamping tension.		Auto-centering occurs because the 2 moving blocks move towards and away from the center when the handle is rotated one way or the other. The handle is welded at its center to a threaded rod; when the threaded rod rotates, the left-handed nut and right-handed nut move relative to the threaded rod. The threaded rod is held in place relative to the fixed block by shaft collars. Because the threaded rod does not move relative to the fixed block, the nuts must move relative to the fixed block. The nuts are welded to the outside faces of the moving blocks such that when the threaded rod rotates, the nuts, and hence the moving blocks, move relative to the fixed block.

			The shaft collars prevent the shafts and threaded rod from moving under friction and handle rotation, respectively.

			The thrust washers minimize friction caused by the rotation of the threaded rod's shaft collars under clamping tension.

	Cut Location Notes: If the cut occurs at the center of the clamping volume, we achieve maximum clamping rigidity and optimal vise dimensions to facilitate angled cuts (because the vise needs a wide mouth for angled cuts, better to go wide from the center than anywhere else for maximum rigidity and dimensional uniformity).		Cut Location Notes: If the cut occurs at the center of the clamping volume, we achieve maximum clamping rigidity and optimal vise dimensions to facilitate angled cuts (because the vise needs a wide mouth for angled cuts, better to go wide from the center than anywhere else for maximum rigidity and dimensional uniformity).

YK at 18:24, 8 June 2012

2012-06-08T18:24:02Z

← Older revision		Revision as of 18:24, 8 June 2012
Line 1:		Line 1:
	~~=Feature: Auto-Centering Vise=~~		*'''Auto-Centering Vise: improves cut quality and to fit more workpiece sizes and shapes'''

	*'''Auto-Centering Vise~~''' (to improve~~ cut quality and to fit more workpiece sizes and shapes)

	[[Image: ColdSawV1Clamp.png]]		[[Image: ColdSawV1Clamp.png]]

YK: Created page with "=Feature: Auto-Centering Vise= *'''Auto-Centering Vise''' (to improve cut quality and to fit more workpiece sizes and shapes) Image: ColdSawV1Clamp.png Shaft Collar and Th..."

2012-06-08T18:23:01Z

Created page with "=Feature: Auto-Centering Vise= *'''Auto-Centering Vise''' (to improve cut quality and to fit more workpiece sizes and shapes) Image: ColdSawV1Clamp.png Shaft Collar and Th..."

New page

=Feature: Auto-Centering Vise=

*'''Auto-Centering Vise''' (to improve cut quality and to fit more workpiece sizes and shapes)

[[Image: ColdSawV1Clamp.png]]

Shaft Collar and Thrust Washer Notes: The shaft collars prevent the shafts and threaded rod from moving under friction and handle rotation, respectively. The thrust washers minimize friction caused by the rotation of the threaded rod's shaft collars under clamping tension.

Cut Location Notes: If the cut occurs at the center of the clamping volume, we achieve maximum clamping rigidity and optimal vise dimensions to facilitate angled cuts (because the vise needs a wide mouth for angled cuts, better to go wide from the center than anywhere else for maximum rigidity and dimensional uniformity).

Cut Depth Notes: At all possible cut angles, the blade must not contact the vise.

Vise Dimensional Notes: The vise achieves maximum rigidity and minimum material usage when its clamping volume is as close to its mounting surface as possible.