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| PeterE's version of a Saddle Stop |
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| PeterE:
Hi Bernd, Thank you! I have never seen one of these anywhere so it will be interesting to see how (well?) it works in the end. Anyway, it is all done now and these are the parts: At the top we see the main block with its nut and washer, below that to the left the little spring and the plunger, then the lock dog with screw. To the right we see the hub of the star wheel seen from back with the drillmarks for click stopping, its center and fastening screw, and finally to the far right the small stubs with lock nuts. As said earlier, the stubs have one, two or three rings to easily see which one is which. Screwing it all toghether it looks like this on the bench: Quite compact I think. Although I could have used M5 for the stubs/pegs instead, that would have given me a bit better clearances. Placing it on the lathe to check that all measurements was correct (and they were). I choose to use an ordinary nut for locking the thing on the lathe as I can get a little more clamping force using a wrench to secure it and know it does not move when graduating. The idea with the click stops work although they are a bit rough at the moment and really needs to be run in. A final check with both saddle stops shows that there is a little difference in terms of how far from the bedway the centerline of the two stops are. This is calcualted as the final item - the micrometer stop - is not made yet and it will be placed on the saddle so that it gives a stop face for both clamp-on stops. Fun little project this, and so useful at the end! BR /Peter |
| Stilldrillin:
Another handy piece of hardware! :thumbup: Well done Peter..... :clap: :clap: David D |
| DaveH:
Peter, Not only usefull, but very nice. :clap: :thumbup: Come to think ... I bit like me. :lol: :lol: :lol: :beer: DaveH |
| PeterE:
Thanks a lot for cheering me on guys! :nrocks: Makes it nice to show ones efforts! As said, the next item built will be the micrometer stop pad. BR /Peter |
| PeterE:
The last item is now nearly done! :D The pic below shows the two parts of the micrometer stop. The right part is the outer piece with 40 divisions to give 0.025 mm/div like the other dials on the lathe. Inside the dial is a piece of an ordinary M6 screw (currently curing after fasting with Loctite). The end sticking out to the left will be turned down to make a flat "buffer" surface. The right part has an M6 threaded hole in and will get a fiducial line when I know where the thing stops against the saddle. The M6 screw at the right end is thus for fastening to the saddle. Assembling the stop gives the following look: The pic shows whereabouts the micrometer is intended to be placed and it will be placed so that both stops can use it. I still have to stamp the numbers and to drill the fastening hole in the saddle, but that is going to be done when I make some upgrades to the apron and leadscrew and then have to take the saddle off the bed. When graduating the dial I used my newly made tristar stop and it worked as intended. I have set the three pegs to give 1.5 mm difference in relation to each other. The micrometer stop have a 15 mm-ish setting range and as said 0.025 mm/div. This was my first attmept to graduate a dial and I regard it as a success! :D :D :D BR /Peter |
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