Swingup external threading tool

Gallery, Projects and General > Project Logs

<< < (14/29) > >>

bogstandard:

--- Quote ---What about stopping a tipped tool in the cut without the help of a run off groove ? That part sounds like the recipe for a chipped tool.
--- End quote ---

I just knew John would pick up on something I had done. But I did have an excuse, I rushed all these threads thru with the bare minimum of preparation, otherwise you wouldn't have got any results at all.

I have Stew calling round later today, so I suppose I will have to prepare a part for giving him a demo, and I promise to have the correct depth runout slot.

John

andyf:
It's starting to look pretty effective, Bogs - great! As to 1/8" stock, I doubt that the weight of the tool and its holder would cause any problems when reversing. To my mind, the force exerted on the stock involved must be much less than when actually cutting a thread into the same size stock. But I suppose that a practical test will reveal whether it works as well on slender stuff, and in cutting small pitches.

--- Quote ---I have now to make a camera mount to video the process
--- End quote ---

--- Quote ---I have Stew calling round later today, so I suppose I will have to prepare a part for giving him a demo
--- End quote ---
Maybe Stew could be prevailed upon to act as a camera tripod bipod :)

Andy

bogstandard:
Andy,

We tried that, but Stew seemed to be a bit of a jinx and we could only get a 14 second clip each time we tried.

So one piccy and a 14 second clip is all you are getting this time.

I managed to find a lump of 2.5" brass that I could cut a thread on. So away I went and cut a 5mm pitch on it, which is near enough to a 5 tpi thread for comparison. The holder I have made caused a problem in that the top overhang wouldn't allow the tool to come up high enough for really large threads, but that is a problem that can easily be overcome. But with a little coaxing we got it done. Other than that, the cutting action couldn't be faulted, it just went ahead and did it, just as planned.

And for all you video nuts, this is as much as it would record each time, so this will have to do you until I can work out what is wrong with the camera settings. But at least it shows the full cutting and retraction action, just.

Stew can be my independant witness that the tool really does work (otherwise he doesn't get the free beer at Christmas).

Bogs

NickG:
Nice video Bogs, it did exactly what I thought :clap: :beer:

sbwhart:
Stew the bipod reporting in.

All worked perfectly, that course thread was a real tester with a little bit of tunning John had it working real nice.

The worst problem was from my driving ability of the camera "but i only pressed the button once John" "it should record more than that lets have another go" "honestly John I only pessed it once" "somthings wrong lets have another go" :-------------------------

And then John spilt blood when he slipped and craked his shin on his machine stand

OUCH

:( :( :(

I learnt a few new RAF words

:D :D :D

Stew

Navigation

 Message Index

Go to full version