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- Feb 7, 2013
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- 2,502
Today I got started on the BS-10 to ER-40 adapter for the Gorton 9J. It's pretty straight forward.
I started with a piece of Stress Proof shafting and machined off about 5.5 inches to a diameter of
1.3 inches or so(cylindrical). Then it was flipped in the lathe chuck and work on the collet end began.
I drilled in 2 inches up to an inch and bored out till I reached the minimum diameter of the collet.
Then I set the compound to 8 degrees and continued boring until I had a reasonable fit for the collet.
Then I single pointed some 18tpi threads. This evening I will likely finish up and make a nut to
fit the threads, After that the narrow part of the shaft will be machined to fit the Brown and Sharpe taper
and a 5/8 x 11 thread added for the draw bar.
Here's a few photos of the progress:
View media item 96568View media item 96569View media item 96570View media item 96571View media item 96572View media item 96573
The order of operations is important and the last thing to do will be to machine the BS#10
taper, otherwise I would not be able to hold a tapered shaft and machine the ER-40 end.
So far it looks like forward progress.
I started with a piece of Stress Proof shafting and machined off about 5.5 inches to a diameter of
1.3 inches or so(cylindrical). Then it was flipped in the lathe chuck and work on the collet end began.
I drilled in 2 inches up to an inch and bored out till I reached the minimum diameter of the collet.
Then I set the compound to 8 degrees and continued boring until I had a reasonable fit for the collet.
Then I single pointed some 18tpi threads. This evening I will likely finish up and make a nut to
fit the threads, After that the narrow part of the shaft will be machined to fit the Brown and Sharpe taper
and a 5/8 x 11 thread added for the draw bar.
Here's a few photos of the progress:
View media item 96568View media item 96569View media item 96570View media item 96571View media item 96572View media item 96573
The order of operations is important and the last thing to do will be to machine the BS#10
taper, otherwise I would not be able to hold a tapered shaft and machine the ER-40 end.
So far it looks like forward progress.
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