
12.TOOL FUNCTIONS B-63943EN-1/02
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- Tool life management and tool change
The CNC performs tool life management, regarding tools having the
same tool type number as a group. When a tool type number (T
code) is specified by an NC program, the tool management data
registered in the CNC is searched to find a tool having the shortest life
among the tools with the same tool type number.
The cartridge number and pot number corresponding to the searched
tool are output as a T code signal to the PMC. Based on the output
cartridge number and pot number, the PMC performs preparation for a
tool change (to the next tool). A different tool can also be selected
on the PMC side.
The CNC performs tool life counting for each tool that is at a spindle
position in the spindle management table.
When the lives of all tools having the tool type number specified by
the T code have expired, alarm PS5317 is issued. If there is a tool in
the spindle position or standby position, that tool is selected to
continue machining.
As the T code signal, a specified tool type number instead of the
cartridge number and pot number can also be output directly by
parameter setting.
There are two types of tool life management counting methods:
counting the number of use times and counting cutting time. One of
the counting methods is set in tool information of tool management
data.
Other major specifications related to tool life management are as
follows:
Tool type number (T code): Up to 8 digits (1 to 99,999,999)
Maximum tool life value: 99,999,999 times when the number of use
times is specified
: 999 hours 59 minutes 59
seconds when time is specified
Life count interval when time is specified: 1 second
Tool life management count restart M code: Enabled
Tool life count override: Enabled
- Examples of performing tool life management
Operation examples of tool life management are given below, in
which the tool management data and cartridge management table are
set as follows:
Tool management data
Data No. Tool type
No. (T)
Tool life
counter
Maximum
tool life
value
Tool life
status
Tool
information
Tool length
compensa-
tion No. (H)
Cutter
compensa-
tion No. (D)
1 11111111 985 1000 Not expired UNCR 1 1
2 11111111 0 1000 Not expired UNCR 2 2
3 11111111 0 1000 Not expired UNCR 3 3
4 22222222 0 2000 Not expired UBCR 31 41