Jerk within the polynomial

The curvature of the polynomial results in a jerk for the axes running across the path trajectory. This jerk is normally checked with the maximum dynamic parameters of the axes (P-AXIS-00199). If the jerk is too strong, path velocity is reduced accordingly. In some user-specific applications, this reduction in velocity is undesirable because of the maximum jerk. This can be defined specifically by control commands in the NC command #CONTOUR MODE. The control commands overwrite the pre-definition in the channel parameter list P-CHAN-00110 and are valid modal up to program end.

In the example below, the block transition from N6 to N7 is contoured by polynomials and this is considered by the jerk. The transition from N7 to N8 is also contoured but with no consideration for jerk on the path contour.

Programming Example

Jerk within the polynomial