The cheap and dirty way would be to add add in the TRAJ sectio/n ARC_BLEND_ENABLE = 0
/This puts the trajectoy planner into pre 2.7 mode (pre circular arc blend - 1 segment look ahead) You obviously lose x segment look ahead. During testing exact stop mode happened between G0 and contouring moves - but that changed the behavior of linuxcnc so I think it was taken out. (now it blends between all segments types.) Currently the fix is adding G64Px.xxx at the beginning of all programs. sam // On 3/29/2017 9:37 AM, Stuart Stevenson wrote: > Gentlemen, > This is connected to the G64 question I asked on the developers list > yesterday. > > G64 P0 does not change the positioning problem on the machine. > > Problem description: > desired machine motion > position XY with Z above the material/work level > move Z to material/work level > face mill top of material > > encountered machine motion > position XY with Z above the material/work level > result as expected > move Z to material/work level > result not as expected - as the tool approaches the final Z > position > the tool moves an amount > toward the final XY position > and cuts into the > material/stock > face mill top of material > result as expected > > The work around has been to add an intermediate point after the z move that > will cause the rounding to fall short of the material/stock > The BIG problem is the customer has many proven/certified programs making > parts on this machine. The quality manual requires a full first article > inspection procedure to be performed on the resultant machined part after > ANY change in the process. This is not acceptable to the customer. > Customer wants the machine to just perform like it did with the previous > (old) linuxcnc version. > Customer is asking for revision to old version if fix is not able to be > accomplished rather quickly. > > thanks > Stuart > ------------------------------------------------------------------------------ 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
