How would you reproduce this part on a South Bend 9 with no taper adjustment? I need to make a few of them so I’m not sure how to do this consistently with out just hacking into it
I’m picturing using the compound slide, but with the lantern style tool holder how do I know the angle of the tool?
Material is 2” Delrin.
Any tips appreciated!
How would you make these adjacent tapers on lathe
- Bill Shields
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Re: How would you make these adjacent tapers on lathe
using a neutral tool - maybe a 30 degree diamond, and cut it out with a CNC lathe, as there appear to have been done.
otherwise, hog out the center, then set the compound at the correct angle and finish the taper
otherwise, hog out the center, then set the compound at the correct angle and finish the taper
Too many things going on to bother listing them.
Re: How would you make these adjacent tapers on lathe
I don't have a good answer but welcome to the forum.
Pete
Pete
Re: How would you make these adjacent tapers on lathe
This looks like a perfect job for soft jaws. Set your compound for the degree taper you want; cut one side then reverse the piece in the chuck and turn the other taper. This way you only have to set the tool post once. You will have to "hog out the center portion before doing the tapers. I think I have it right, but others may want to correct me if I am wrong.
Mr.Ron from South Mississippi
- tornitore45
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Re: How would you make these adjacent tapers on lathe
The angle of the taper is set by the compound slide orientationbut with the lantern style tool holder how do I know the angle of the tool?
The angle of the tool is set by eye to be roughly perpendicular to the taper if possible an not foul other features of the part.
Lantern tool holder has no special distinction in this case, any tool holder need set up the same.
In the end it may be found that to finish the part it need be setting up on a mandrel which can be a threaded rod and a couple of bushings.
Mauro Gaetano
in Austin TX
in Austin TX
Re: How would you make these adjacent tapers on lathe
Think I got it. I have to grind a better tool though that will let me get at to the inside corners better.
Thanks!
Thanks!
Re: How would you make these adjacent tapers on lathe
I agree. Only have to set the compound once and both tapers will match.Mr Ron wrote: ↑Sun Feb 03, 2019 12:49 pm This looks like a perfect job for soft jaws. Set your compound for the degree taper you want; cut one side then reverse the piece in the chuck and turn the other taper. This way you only have to set the tool post once. You will have to "hog out the center portion before doing the tapers. I think I have it right, but others may want to correct me if I am wrong.
Use a live center to support the other end, otherwise it might walk out of the chuck - there's a limit to how tight you will be able to hold it as compared to metal.
Steve
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Re: How would you make these adjacent tapers on lathe
Fortunately it's Delrin, as you'll have to have the tool hanging out a ways.
Conrad
1947 Logan 211 Lathe, Grizzly G1006 mill/drill, Clausing DP,
Boyar-Schultz 612H surface grinder, Sunnen hone, import
bandsaw, lots of measurement stuff, cutters, clutter & stuff.
"May the root sum of the squares of the Forces be with you."
1947 Logan 211 Lathe, Grizzly G1006 mill/drill, Clausing DP,
Boyar-Schultz 612H surface grinder, Sunnen hone, import
bandsaw, lots of measurement stuff, cutters, clutter & stuff.
"May the root sum of the squares of the Forces be with you."