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| Swingup external threading tool |
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| andyf:
Wow, it really is good, isn't it? Just as a closing note, thanks to Bogs for taking us through everything, and many thanks to Mike Cox. As already mentioned, he floated the idea and showed his prototype on another machining group. I'll invite him to take a look at this thread. Andy |
| chuck foster:
nice video and better yet, nice threading :thumbup: :clap: that tool holder is very simple and it looks like it works very well.............now i will add that to my list of things to make. thanks for taking us along for the ride john. chuck :wave: |
| Bernd:
--- Quote from: bogstandard on December 11, 2009, 05:46:00 PM ---Bernd, I have a shoe brake system on my machine, complete with a drum, just like a car, it is very efficient. I thought this was a lot of backlash on my machine since I had set it up, so just how bad is yours? Bogs --- End quote --- John, The old Logan I've got doesn't have a brake on it so I'd need to run it real slow for one thing. Second, when I reverse the machine the chuck will start to turn and at about a 1/4 of a turn of the chuck the lead screw will finally start to turn. Then after the chuck has made almost a full revolution backwards the carriage will finally start to move. Have I made this clear enough to understand? That is one reason I think this tooling will not work in "my" machine. I'm sure that the gears on the headstock probably have more backlash than they need. As far a the lead screw is concerned, I'll have to take a closer look. In the mean time I guess I'll just have to resort to turning the cross slide out of the way. BTW, I'm amazed at how nice that tool follows the thread groove backwards. Great job. Bernd |
| websterz:
:bow: John, that works a bloody treat! (Did I say that right? :lol:) The camera mount is icing on the cake...I gotta' build one of those! :proj: |
| bogstandard:
Thanks gents, and spot on Webs. Just to prove I am not all hot air, and that I do use the bits I make, I had a chance to try this out today. Here is the job ready prepared for threading Thread cut Chuck tried and fitted perfectly The last bit for my interchangeable tooling, a 5c to Myford adapter to fit the spindexer. I can honestly say that it was the easiest bit of single point threading I have ever done. Bogs |
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