Cold Saw/V1 Design Rationale

Conceptual Parameters

• Baseplate

• 2 Fixed Blocks (mounted to baseplate by XXX, 2 shaft holes, 1 threaded rod hole)

• 1 Moving Nut Block (rides on 2 shafts, driven by a threaded rod that moves a nut welded to the block)

• 2 Shafts (radially held on the Fixed Blocks, axially held by 2 shaft couplings on the outsides of the Fixed Blocks)

• 1 Threaded Rod (radially held on the Fixed Blocks, axially held by 2 shaft couplings on the outsides of the Fixed Blocks, drives a nut welded to the Moving Block)

• 1 Clamp Handle (welded to the Threaded Rod)

Clamp Threaded Rod and Shafts Positioning

• The initial design branch split is whether the mount holes for the Shafts and Threaded Rod are propagated along a common centerline or not.

• Common centerline positioning provides the highest possible power transfer that can be attained through the 2 shaft 1 threaded rod system- because disjointed positioning can cause friction and bend-related force vectors not along the clamping axis of motion.

However, because the workpiece must be clamped above the centerline clamp system, bending can still occur.

• So the real design issue is which mounting style minimizes the bending forces. For the disjointed mounting style, because the shafts must not take up the clamping volume, they must always practically be below the workpiece like the Threaded Rod.