01-05-2013, 10:59 AM
The pics are coming from PDF files - "books" on shapers & planers. Here's one for a geared type, more of a proper design like the rifling machine. The helix angle is determined by the diameter of the gear, which is driving a worm to rotate the work. It would be quite a bit more complex to build, but I suppose could even be used to do some threading.
This "book" goes into better detail than most, better images and some setup formulas. I don't have a direct link handy, but the title is "Planing and Milling" by Franklin D. Jones, 1915 and found at books.google.com, 7.2 megs.
This "book" goes into better detail than most, better images and some setup formulas. I don't have a direct link handy, but the title is "Planing and Milling" by Franklin D. Jones, 1915 and found at books.google.com, 7.2 megs.