The operations are:
* 16mm face machining leaving 4mm thick 8mm wide sections to fit into table - 10 mins
* 6mm slot drill - 15 mins
* 6mm ball nosed - 30 mins
* 6mm slot drill - 15 mins
* 6mm ball nosed - 30 mins
* 3mm slot drill - 0.3 mins
The rest of the time is tool changing and preparation. I think I might be able to make 4 in one day.
2 comments:
this kind of airfoil has curvature essentially only in one direction. That means the finish operation should be doable with a bull-nose/filleted endmill. The 6mm ballnose has R=3, but I think you could go with a D=10 and R=2 or similar bull-nose cutter and get a faster finish pass by using a larger step-over while retaining the same surface finish.
One of the long-tern goals of my cutting-simulation would be to explore what step-over/scallop parameters are required for a certain surface finish given a cutter (or vice versa).
Have you considered machining an airfoil with turbulators...
http://www.mechanicalengineeringblog.com/tag/whale-power/
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