Jerk During Programmed Rapid Traverse (G00) (Axis-Specific); General Information; Parameterization; Excessive Jerk For Block Transitions Without Constant Curvature (Axis-Specific) - Siemens SINUMERIK 840D Function Manual

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Jerk during programmed rapid traverse (G00) (axis-specific)

Frequently, the maximum jerk for the machine axes involved in the machining process must be

set lower than the machine's performance capability officially allows because of the

supplementary conditions associated with the specific process concerned.

For time-optimized traversing of the machine axes with programmed rapid traverse (part-

program instruction G00), a specific maximum value can be programmed for the axis-specific

JOG setup mode

This function does not affect jerk in respect of a rapid traverse override in JOG setup mode.

The maximum value for axis-specific jerk with programmed rapid traverse is parameterized

(G00) using the axis-specific machine data:

MD32434 $MA_G00_ACCEL_FACTOR

(scaling of the acceleration limitation with G00)

This is used to generate the maximum value for axis-specific jerk with programmed rapid

traverse (G00) that is taken into account by the path planning component during preprocessing:

Jerk[axis] =

MD32431 $MA_MAX_AX_JERK * MD32435 $MA_G00_JERK_FACTOR

General Information

In the case of block transitions without constant curvature (e.g. straight line > circle), the

programmable controller has to decelerate movement of the geometry axes significantly in

order to ensure compliance with the parameterized axis dynamics. For the purpose of reducing/

avoiding deceleration in connection with block transitions without constant curvature, a higher

level of axis-specific jerk can be enabled.

The excessive jerk is parameterized using a dedicated axis-specific maximum value.

Axes and spindles

Function Manual, 06/2019, A5E47437747B AA

B2: Acceleration and jerk

12.2 Functions

Sinumerik 840d sl