Just place the jaws on the bottom of the scroll. The spiral will intersect of the material in the jaw. Then use "combine" with the operation as "cut" and the material will be removed from the jaws leaving you with mating threads. You will have to place all the jaws *exactly* where they need to be in 3d space.
I assume when you do this you place them about midway into the scroll so the three have average curvature. Then you must somehow? modify the threads on the jaws so they work anyplace on the scroll. I don't know enough about chucks to know how they do this. Maybe they are lapped after manufacture? On Tue, Aug 7, 2018 at 12:22 PM Bengt Sjölund <[email protected]> wrote: > OK, managed to get me a spiral with 6mm pitch 3mm wide. > So now I have to try tracing out sutable parts from scroll and copy over > the other, each trace from start and end of scroll. > Then make a 3D print to verify my doings. > > Hints on tracing? > > > Den 2018-08-07 kl. 20:46, skrev Bengt Sjölund: > > No go = FRUSTRATION 360 just shuts down, have been doing this for few > > days now. > > Got an update today ut still behaving badly! > > > > Will retry and report back if I succeed > > > > > > Den 2018-08-07 kl. 20:22, skrev Chris Albertson: > >> try this > >> > >> Create --> Coil. > >> > >> The choose a flat coil with zero height. In this case you want to > >> use a > >> square cross section and then apply a 2-sided chamfer to the square > >> to make > >> a taper. But maybe you like square? maybe some small fillets. to > >> take > >> the sharp edges off. > >> > >> But the "trick" is the relish you can make a coil with zero > >> elevation gain > >> per turn, kind of like the main spring in an old clock. > >> > >> I just tested this out, take about 2 minutes after you think to try > >> using > >> "coil" > >> > >> > >> > >> On Tue, Aug 7, 2018 at 11:04 AM Bengt Sjölund <[email protected]> wrote: > >> > >>> Well Chris, I can not find a way to this in Frustration 360 ;) > >>> Give me a hint what commands to use, and yes my mill is sturdy > >>> enough to > >>> do the job. > >>> > >>> /Bengt > >>> > >>> > >>> Den 2018-08-07 kl. 19:33, skrev Chris Albertson: > >>>> Why not model it in Fusion 360? The scroll is a constant spiral > >>>> and most > >>>> 3D modelers can do that. I don't see any reason why I couldn't make a > >>>> chuck in Fusion. Then once you have the model you can use some of > >>>> Fusion'stoolpath generators to create the g-code. The software is > >>>> free > >>> but > >>>> the skill needed to use it take time. > >>>> > >>>> On Tue, Aug 7, 2018 at 3:41 AM Bengt Sjölund <[email protected]> > wrote: > >>>> > >>>>> Hi, > >>>>> Looking for a g code generator for scroll jaws. > >>>>> I have a Ø125mm 3-jaw chuck with 6mm scroll pitch and would like > >>>>> to be > >>>>> able to mill my own soft jaws. > >>>>> Have bee searching the web but I can not find anything. Any help > >>>>> pointing me in right direction would be appreciated. > >>>>> > >>>>> Cheers Bengt > >>>>> > >>>>> > >>>>> > >>>>> > >>> > ------------------------------------------------------------------------------ > > >>> > >>>>> Check out the vibrant tech community on one of the world's most > >>>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >>>>> _______________________________________________ > >>>>> Emc-users mailing list > >>>>> [email protected] > >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>>>> > >>> > >>> > >>> > ------------------------------------------------------------------------------ > > >>> > >>> Check out the vibrant tech community on one of the world's most > >>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot > >>> _______________________________________________ > >>> Emc-users mailing list > >>> [email protected] > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>> > >> > > > > > > > ------------------------------------------------------------------------------ > > > > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
