Stuart, thanks. Great explanation. I already set up a little tool table. One more question, is, once I set up the tool table, how to set the initial offset so that the first tool chosen in the program, would be properly adjusted for height. Should I select my first tool in MDI (say M6T2), and then set G54 coordinate, and then run the program where M6T2 is stated again?
- Igor On Wed, Sep 8, 2010 at 8:05 AM, Stuart Stevenson <stus...@gmail.com> wrote: > Igor, > The whole point of tool length offsets is to run the program as if all > tools are the same length. Early NC machines had the tool length > incorporated in the program and the operator had to match each tool length > to the programmed tool length for each tool. There were elaborate tool > holders to be able to adjust the tool length. How you get there is not > important. Repeating yourself is important. > I like positive values in tool length compensation as this makes 3 axis, 4 > axis and 5 axis machines appear (and setup and adjust) the same to > operators. Many people prefer negative tool length offsets as this causes > the tool to move Z positive when the tool length offset is canceled. If you > have only 3 axis machines then negative offsets are usually safer and > easier. > You can use tool length offsets in several ways. The best way to determine > your preferred method is to experiment with tool length offsets and work > coordinate settings (g54 - g59). This can give you a very comfortable, fast > method to set up your machine. There is no ONE best way for everyone. > I prefer using a repeatable spot on the table and a known tool set device. > I have a 1/2 dowel in my pocket (have had for many years). This is my tool > set device. I roll it under the tool while moving the tool up incrementally. > When it slips through you know you are within the increment setting of the > surface you are setting zero from. > I like to use the same spot on the table for all tools and setups. I use > g54 offsets to then move the Z zero point from the top of the setting > surface to whatever zero setting the program requires. > have fun > Stuart > > -- > dos centavos > ------------------------------------------------------------------------------ > This SF.net Dev2Dev email is sponsored by: > > Show off your parallel programming skills. > Enter the Intel(R) Threading Challenge 2010. > http://p.sf.net/sfu/intel-thread-sfd > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
