Briefly, and in accordance with the invention, an abnormal condition occurring during {HEAD ~ the operation} of {TAIL ~ the machine tool} is immediately detected, and upon detection of the abnormal condition the operation of the machine tool is halted and an alarm device is actuated to warn of the abnormal condition of the machine tool 
of
Briefly , and in accordance with the invention , an abnormal condition occurring during { HEAD ~ the operation } of { TAIL ~ the machine tool } is immediately detected , and upon detection of the abnormal condition the operation of the machine tool is halted and an alarm device is actuated to warn of the abnormal condition of the machine tool
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH