Cold Saw/V1 Design Rationale/Hold System: Difference between revisions

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=Feature: Auto-Centering Vise=
=Hold System Notes=


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


[[Image: ColdSawV1Clamp.png]]
*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.


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


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).
=Concepts=


Cut Depth Notes: At all possible cut angles, the blade must not contact the vise.
[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Hold_System/Vise 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.
[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Hold_System/Base Base]

Latest revision as of 19:37, 11 June 2012

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.
  • 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

Vise

Base

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