- Joined
- Sep 29, 2014
- Messages
- 2,102
For those that like ball turning, 1 1/2" diameter ball seat through a 1 1/16" hole.
2 aluminum parts bolted together with a 3/4" hole produced with a reamer in a mill.
Indicated the hole in a 4-jaw chuck using stepped soft jaws after having milled the steps in a Bridgeport knee mill, this is by far the fastest way to put thin parts in a 4-jaw.
Used a 1/8" wide full radius internal groove tool for the inside work, chips were a problem as they could not get out. Used .002 feed and a 20% percent step over in order to make the chips as thin as possible, took less then 15 Min. for each part and the finish was excellent.
I made the male parts last week. 1/4" round insert tool, 750 RPM's, .030 DOC, .010 feed for roughing and ,004 DOC and .005 feed for finishing
2 aluminum parts bolted together with a 3/4" hole produced with a reamer in a mill.
Indicated the hole in a 4-jaw chuck using stepped soft jaws after having milled the steps in a Bridgeport knee mill, this is by far the fastest way to put thin parts in a 4-jaw.
Used a 1/8" wide full radius internal groove tool for the inside work, chips were a problem as they could not get out. Used .002 feed and a 20% percent step over in order to make the chips as thin as possible, took less then 15 Min. for each part and the finish was excellent.
I made the male parts last week. 1/4" round insert tool, 750 RPM's, .030 DOC, .010 feed for roughing and ,004 DOC and .005 feed for finishing