Siemens Sinumerik 840D Operating Turning page 53

Hide thumbs Also See for Sinumerik 840D:

Programming planes

Continuous path control units can control slides and tool carriers simulta-

neously along 2 or more axes at a programmed feed rate. For this the

speed of the individual drives must be matched to one another. This job is

taken over by the interpolator of the CNC-control unit. This is a software

program for the evaluation of intermediate positions and speed conditions

of the individual axes such that the slides can follow the programmed path.

As from the 2 ½-D-Continuous path control unit the interpolation can be

switched between the three different planes.

The selection of the plane is effected by means of suitably programmed

instructions.

XY-Plane - programming command G17

XZ-Plane - programming command G18

YZ-Plane - programming command G19

The standard plane being used for working with CNC-Turning machines is

G18. With CNC-Milling machines the plane G17 is normally taken to be the

usual programming plane.

The defining of the working plane should either be at the beginning of a nc

program, or the working plane should be pre-selected before executing the

840D/828D SINUMERIK Operate

Sinumerik 828d