View Single Post
  #13  
Old 04-22-2011, 12:41 PM
Don Robinson's Avatar
Don Robinson Don Robinson is offline
Hall of Famer
 
Join Date: Jan 2003
Location: Brownsville, Texas
Posts: 4,873
Making the setup for milling the flats.

I've calculated that I need to remove 0.033" per side from the blade in order to leave a cutting edge 0.030" thick.

The tilting table is set at approx. 5 degrees with the highest part toward me. I'll make a trial cut 1/2 of the amount I want to remove and see if it cuts 1/2 the distance to the desired runout toward the spine.

I had to readjust the tilt twice in order to get the trial cut 1/2 the distance toward the spine I want.

Now I just mill the flat, adjust the table upward the total amount I want, and make a finish cut.

This end mill has approx. .030" radii on the 4 corners, so it leaves a nice radius at the plunge shoulder. We don't want any sharp corners on the blades during heat treat to avoid stress cracks.
Attached Images
File Type: jpg DSC02877.jpg (180.9 KB, 365 views)

Last edited by Don Robinson; 04-22-2011 at 12:51 PM.