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By licencing the app TS-Wear a ToolScope can be extended for recognotion of tool wear at machine tols.

This is especially useful for the monitoring of production of big lot sizes. There one receives

  • savings of tool costs
  • increases of the machine avaibility

The monitoring issues an alarm when the average value of a signal has reached a previously defined limit. As tool wear is almost inevitably associated with higher process forces, it is reliably detected.

General description

The app TS-Wear is technically represented by the monitoring method "Average".

It is possible to configure at which average value of a process an alarm should be issued. The device makes a meaningful suggestion following one-time learning.

To use this function, you must select "Average" in the "Monitoring" selection field for a monitoring channel in the configuration settings.

Operation

As shown in the bottom window in Figure 37, the monitoring shows in red the average value of the monitored sensor signal after completion of a process (in this case the torque of a spindle). The upper limit is shown in yellow and the lower limit is shown in green. If the signal exceeds the yellow limit, a wear alarm is triggered. If it falls below the green limit, a missing alarm is triggered.

Display for the average value / wear monitoring

 

Press "Configuration" to configure the monitoring as shown in the figure below.

 

 

Configuring the average monitoring procedure

 

The average monitoring procedure differs from the other monitoring procedures primarily because a running process cannot be seen but, at the end of the process, the average is entered as a point in the graphic. You can therefore see the course of a number of processes instead of the course of one process over time/position.

Configurable parameters

Function name

Description

Wear limit

You can set the upper limit of the monitoring process using this parameter. As soon as it is exceeded, the ToolScope triggers an alarm. The unit corresponds to the unit of the Y axis.

Missing limit

You can set the lower limit of the monitoring process using this parameter. As soon as it is undershot, the ToolScope triggers an alarm. The unit corresponds to the unit of the Y axis.

Measuring Interval, Start / Measuring Interval, End [Unit of the measuring axis]

The "Messintervall, Start" and "Messintervall, Ende" parameters can only be selected if the checkmark next to "Extend monitoring by possibility of watching a measuring interval" is set under "Service / Settings / Monitoring / Channel X". Here, you can manually specify a measuring point for the desired start and end of recording for the average value. If no "measuring axis" is specified as monitoring input, then the measuring points relate to the time axis. If a measuring axis is specified (typically a position axis), then the information relates to the values of the position axis.

Automatic offset compensation

The "Activate offset compensation" parameter can only be selected if the checkmark next to "Compensate signal offset" is set under
"Service / Settings / Monitoring / Channel 1". If this function is activated, the respective signal is set to zero at the start of measuring, as the signal minimum is deducted from the signal curve before calculation of the mean value. "Downward deviations" are not evaluated. This is helpful when there is a fluctuating base load, as false alarms are avoided.

Manual offset compensation

This function makes it possible to define the start and end of the respective signal manually. If no "measuring axis" is specified, then the measuring points relate to the time axis. If a measuring axis is specified (typically a position axis), then the information relates to the values of the position axis.

Relearn; number of processes

As soon as the checkmark is set next to "Relearn; number of processes" and the process is observed the next time, the monitoring forgets the previous data and relearns the newly entered number of processes.