Jerk within the polynomic

The curvature of the polynomic results in a jerk for the axes across to the trajectory. This jerk is checked with the maximum dynamic parameters of the axes [2]-16. If the jerk is too strong, the path velocity is reduced. But for some user specific cases this reduction of velocity because of the maximum jerk is not desired. For this some specific control commands in the NC command #CONTOUR MODE are available. These control commands overwrite the pre-definitions of the channel parameter list [1]-41 and are valid modal until program end.

In the following example the block transition from N6 to N7 is contoured by polynomic considering the jerk. The transition from N7 to N8 is also contoured, but without consideration of the jerk on the path contour.

Programming example

%poly_jerk.nc 
( Default setting in channel list : check_jerk_on_poly_path 
#SET SLOPE PROFIL[1] 
#CONTOUR MODE [ DEV, PATH_DEV 4, RELEVANT_PATH 51] 
N0003 G1 X0 Y100 Z0 F4 
N0004 G261 
N0005 G1 G91 X100 
N0006 Y-50 
N0007 #CONTOUR MODE [CHECK_JERK=1] 
N0008 X100 
N0009 #CONTOUR MODE [CHECK_JERK=0] 
N0010 Y-50 
N0009 G260 
N0055 M30