The Craftmans Shop > New from Old
Toolset 140 Tool Setter Re-purposed
awemawson:
It turns out its a "Toolset 140" or maybe a "Toolset 40" not a Toolset 350 as I had thought from the documentation that does relate to the 350 version.
The silk screen printing on the granite base of mine is rather worn and although it says '40' there is an obvious gap where the '1' of 140 probably was !
I hope that Pete and Pekka don't mind, but I've edited the titles of the posts in this thread to reflect this numeric error.
hanermo:
What are the resolutions and repeatability you get ?
awemawson:
Yet to measure anything properly as I need to sort that top surface of the holder.
awemawson:
I escaped this evening to the workshop to have a go at the turning down of the holder nose that is bruised.
Choosing a random carbide tipped lathe tool from my box of bits I clamped it very firmly upright in my Kurt vice, with a parallel below to ensure that it didn't try to retreat in the face of the enemy. Then, remembering to put a pull stud in the holder I set it in the spindle, speed to 700 rpm and manual (hand wheel) feed.
Taking very small cuts it was producing wire-wool like swarf - this is a VERY hard tool holder - and not a few sparks. Inspection with a mirror showed a fair if not perfect finish, so I knocked the set up down and put the holder back in the Toolset 140 to see if I had reduced the excursions on rotation that previously had been marginally more than 1.5 thou.
Sure enough, things are now much better with the needle barely flickering, and I suspect that where it flickers it's a bit of muck in the bearing, as it can be eliminated with firm downward pressure on the disk used to rotate it.
Close examination shows a bit of micro-chatter on the surface finish that probably is totally irrelevant to my application, - I'll try and find a bit of time tomorrow to do a few more experimental measurements.
PekkaNF:
Looking good!
Do you know what sort of mechanism translates X/Y movement into dial indicator movement? Or the stylys moves just moves diagonally and indicator is calibrated to offset the cosine error....aargh...wonder if I formulated this right.
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