Monitoring tool wear and tool load
Application
With Adaptive Feed Control (AFC), you can monitor the tool for wear or breakage. To do this, use columns AFC-OVLD1 or AFC-OVLD2 in the tool management.
Related topics
- AFC-OVLD1 and AFC-OVLD2 columns in the tool management
Description of function
If the AFC.TAB columns FMIN and FMAX each have a value of 100%, Adaptive Feed Control is deactivated, but cut-related tool wear monitoring and tool load monitoring remain active.
Tool wear and tool breakage cannot be monitored at the same time. If the AFC_OVLD2 column contains a value, the control will ignore the AFC_OVLD1 column.
Tool wear monitoring
Activate cut-related tool wear monitoring by entering a value not equal to 0 in the AFC-OVLD1 column in the tool table.
The overload response depends on the AFC.TAB column OVLD.
In conjunction with cut-related tool wear monitoring, the control only evaluates the options M, E, and L in the OVLD column. The following responses are possible:
- Pop-up window
- Lock current tool
- Insert replacement tool
Tool load monitoring
Activate cut-related tool load monitoring (tool breakage control) by entering a value not equal to 0 in the AFC-OVLD2 column in the tool table.
As overload response, the control always executes a machining stop and locks the momentary tool.
Example
The entries in columns AFC-OVLD1 and AFC-OVLD2 are added to the feedback-control reference power AFC-LOAD.
Example input for tool wear and tool load monitoring:
Column | Input |
---|---|
AFC-LOAD | 30% |
AFC-OVLD1 | 5% |
AFC-OVLD2 | 10% |
In this example, the control adds the 5% and 10% to the 30% in each case.
As soon as a value is defined in column AFC-OVLD1, the tool will monitor tool wear. When the control used in the example reaches a spindle power of 35% in total, it executes the defined reaction.