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

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*'''The movement system requires the blade to move closer to the workpiece. This is the operation movement.'''
The movement system requires the blade to move closer to the workpiece. This is the operation movement.


[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Movement_System/Operation Operation]
[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Movement_System/Operation Operation]


*'''The movement system can allow the blade's plane of descent be at different angles to the workpiece. This is the angle movement.'''
The movement system can allow the blade's plane of descent be at different angles to the workpiece. This is the angle movement.


[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Movement_System/Angle Angle]
[http://opensourceecology.org/wiki/Cold_Saw/V1_Design_Rationale/Movement_System/Angle Angle]
*'''Rotary Shaft and Support''' allows the blade to descend in an arc on the workpiece.
The rotary shaft should be supported by 2 blocks for rigidity while retaining efficient material use.
The 2 blocks should be held to the swivel plate by welds for superior rigidity and ease of manufacturing. There are no precision concerns along the horizontal plane regarding welding the shaft blocks onto the swivel plate as opposed to fastening them because the swivel plate is able to rotate.
The support frame up to the drive assembly should be connected to the rotary shaft at 2 points for rigidity.
The support frame should be easily detachable from the drive assembly for ease of assembly, disassembly, and maintenance. The attaching mechanism can be 4 fasteners positioned in a rectangle.
The support frame should be comprised of thick flat bar for rigidity while retaining ease of fabrication and accessibility.
The operation handle should be attached close to the tip of the rotating support, and long in length for mechanical advantage- which facilitates use ergonomics.
What mounts onto the rotary shaft must be as close as possible to the shaft blocks such that failure due to fatigue is minimized.
*'''Swivel Mechanism''' allows angled cuts.
The swiveling frame should swivel about the centre of the vise such that the blade descent always bottoms out at the vise.
The swiveling frame should be attached to a rod at the swivel centre such that the design leaves modularity for automatic encoded swivel in the future.
For manual versions, the rod of the swiveling frame can be threaded so as to fasten with a nut.
[[Image: ColdSawV1SwvHead.png]]
Notes: The swivel clamp fastener should be mounted such that the swivel plate is horizontally clamped to the base disc. If the fastener is vertically mounted, then clamping the swivel head can cause bending that reduces the precision of the Cold Saw.
=Forward and Backward Drive Stops=
*'''Forward and Backward Drive Stops''' (to prevent cutting into vise and to hold blade in mid-air while mounting the workpiece)
[[Image: ColdSawV1Stops.png]]
=Swivel Angle Lock=
*'''Being able to lock the swivel mechanism at certain angles provides precision cutting ability.
*

Latest revision as of 00:29, 20 June 2012

The movement system requires the blade to move closer to the workpiece. This is the operation movement.

Operation

The movement system can allow the blade's plane of descent be at different angles to the workpiece. This is the angle movement.

Angle

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