Ball Screw Rack w/ Nylon Parts Milling Aluminum
Рет қаралды 368
2 жыл бұрынIf you're not sure about parts of the Ball Screw Rack in nylon being able to deliver rigidity under loads like milling aluminum, here's your data.
Commanded diameter: 0.480" Actual: 0.481"
This driver compound is made from 50% infill printed nylon. Cut at 100ipm /13krpm with just a roughing pass, helical path at 0.010" depth per pass with a 3 flute 1/4" TiAlN Carbide cutter.
The limiting factor will likely be the gantry rigidity and other parts, rather than the nylon compound part. It has a 70mm or so face and the load is distributed across that, so deflection should be very minimal here.
@jamieclarke321 2 жыл бұрын
What’s the speeds, feeds and depth of cut on this?
@calphis 2 жыл бұрын
100ipm, 0.010" depth helical cut. Total diameter 0.48" so its just not quite full slotting width for the 0.25" tool
@calphis 2 жыл бұрын
and 13k rpm. 3 flute cutter carbide with TiAlN coating
@jamieclarke321 2 жыл бұрын
@@calphis that’s roughly 2500mm/min and 0.25mm depth of cut so very respectable 👍
@calphis 2 жыл бұрын
@@jamieclarke321 I think the machine would handle much more in terms of rigidity. The limiting factor on those cuts are the 3 flute cutter and chip clearance, needing to avoid welding, etc. I could probably safely have 2x the MRR with a 2 flute cutter, and as some have pointed, a single flute cutter is ideal for this. but just what I had on hand in order to demonstrate the ballnut system nylon parts are not going to ruin your day in terms of losing capabilities.
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