Hi, I’m fairly sure that on a CNC machine the z-axis is the axis parallel to the spindle. On a CNC surface grinder, the Z axis is what you would expect to be the Y axis.
But in reality you can name them however you like. 😀 Cheers Peter Homann - (from my mobile) http://www.homanndesigns.com > On 7 Feb 2024, at 5:29 am, Chris Albertson <albertson.ch...@gmail.com> wrote: > > It is pretty easy to see WHY the z-axis is set up the way it is on a lath > and a mill and why it is different. You need a well defined “zero”. On a > mill, the machine's “zero" is the table and one a mill it is the chuck. A > lathe has not other well define place on the machine, the tailstock moves. > > The after defining the zero point you use the “natural” convention the number > get bigger if you go to the right or up. > > This is the normal way engineers thing about corodrnttes. you ask thee > questions IN ORDER > 1) where is the origin? > 2) which way does “Z” point > 3) then apply the right hand rules for X and Y > > It’s not just machine tools that do this but everyone from physic research to > aircraft manufacturing. And you do have to answer those question in order. > > #2 is really arbitrary but from 8th grade algebra on, we are used to drawing > graphs with the numbers getting bigger as you go up or right and with the > zero point inthe lower left > > > >> On Feb 6, 2024, at 6:06 AM, gene heskett <ghesk...@shentel.net> wrote: >> >>> On 2/6/24 07:54, Stuart Stevenson wrote: >>> Ray Henry's story is a Murphy's Law occurrence. I once had a car with a >>> starter problem. I changed the starter three or four times in quick >>> succession. I could not figure out why so I purchased two, put one in the >>> trunk along with tools. I never had to use it. >> Chuckle. BTDT...Still do at times. Works better than average. But the way >> Ray worded it caught me off guard and I literally shook myself laughing for >> quite a spell. I spent some time in Iron Mountain MI, about a long hour from >> Ray's place, so I visited a couple times while modifying the tv station >> there for digital. >> >> If you ever come across any more of those teeny ball screws like you sold me >> around 20 years back I've got a place to put them. >> >> Take care & stay well, Stuart. >> >> Cheers, Gene Heskett, CET. >> -- >> "There are four boxes to be used in defense of liberty: >> soap, ballot, jury, and ammo. Please use in that order." >> -Ed Howdershelt (Author, 1940) >> If we desire respect for the law, we must first make the law respectable. >> - Louis D. Brandeis >> >> >> >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
