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Automatic Tool Changer
•An Automatic
tool changer or ATC is
used in CNC
machine to
improve the productivity
and
tool carrying capacity of the machine.
•ATC
changes the tool very quickly, reducing the non-productive time.
•Generally, it
is used to improve the capacity of the machine to work with a number of tools.
•The
code used to change the tool is M06.
•N01
T08 M06;(Program/Block
format)
Set of instruction carried out during command of tool change(M06)
•The
call tool
arrive to
waiting pot position.
•All axis goes back to its reference point/position.
•Spindle
orientation takes place.
•Tool unclamp command generated, simultaneously ATC arm hold the spindle
tool and other side the waiting tool.
•ATC
arm get rotated by motorized cam follower mechanism and spindle tool switched
by pot tool and vice versa.
•Tool clamp command generate and ATC arm returns to home position.
Advantages of ATC
- Increase in operator safety by changing tools automatically
- Changes the tools in seconds which reduces machine idle time
- Increases flexibility
- Heavy and large multi-tools can easily be handled
- Decreases total production time
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