helical milling an aluminium lap

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Published 2021-06-06

Cutting a helical groove into a piece of aluminium tubing which will be used as an ID lap.
The work is done on my trusty Thiel Duplex 158 milling machine with a Walter UTA 200 dividing head. The x-axis of the table is connected to the dividing head by means of a gear train which determines the pitch of the helix.

This was my first attempt doing this. At first I miscalculated the gear ratio and got an incorrect pitch as you can see in the video.

All Comments (5)

@TrPrecisionMachining 3 years ago

very good job
@peteswildlife 2 years ago

Lieben Dank für das Teilen Deines interessanten Videos. Gern abonniere ich Deinen Kanal. Herzliche Grüße und bleib gesund, Petes
@WilliamChitham 3 years ago

Beautiful process, I'd love to have that facility. Very expensive to go out and buy the bits to do it mechanically though so I will probably go down the electro mechanical route but I do love gear trains...
@stephensmith799 3 years ago

Oh my goodness…. Please Please Please do not wipe away swarf next to a rotating Chuck and milling tool!!!!