Acceleration Behavior Of The Axis For G33, G34 And G35 - Siemens SINUMERIK 840D Function Manual

Mc axes and spindles

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Table of Contents

V1: Feedrates

5.2 Path feedrate F

Program code

N1614 G0 Z40

Monitoring during the block preparation

Any pitch changes that would overload the thread axis when G34 is active or would result in an

axis standstill when G35 is active, are detected in advance during block preparation. Alarm

10604 "Thread pitch increase too high" or 10605 "Thread pitch decrease too high" is signaled.

During thread cutting, certain practical applications require a correction of the spindle speed. In

this case, the operator will base his correction on the permissible velocity of the thread axis.

To do this, it is possible to suppress the output of alarms 10604 and 10605 as follows:

MD11410 $MN_SUPPRESS_ALARM_MASK bit 10 = 1

Block preparation is then continued normally.

Monitoring during the execution

The following situations are monitored cyclically when the thread is machined (interpolation):

● Exceeding of maximum velocity of thread axis

● Reaching of axis standstill with G35

The following alarm is signaled when the monitoring function responds:

● Alarm 22269 "Maximum velocity of thread axis reached" or

● Alarm 22275 "Zero velocity of thread axis reached"

Acceleration behavior of the axis for G33, G34 and G35

The acceleration behavior of the feed axis when thread cutting/tapping with G33, G34 or G35

can be set via the channel-specific setting data:

Function Manual, 06/2019, A5E47437747B AA

Axes and spindles

Sinumerik 840d sl