Application of computer power monitor in machine tool products

In the cutting process, due to mechanical friction and thermal effects, the cutting tool will wear, the less wear the tool geometry subjected to change, large, the tool edge burn out, or even collapse. When the wear to a certain extent, it must be re grinding, otherwise it will affect the size and surface roughness of the workpiece, reduce product quality, and even scrap. And for still capable of cutting tool, if the knife too frequently, and the productivity of machine tools is reduced, and the increased consumption of tool materials, labor productivity decline, increase the cost of production. To this end, the machine operator workers must in the cutting process, constantly on the tool wear monitor, timely change the knife, the knife, in order to overcome the disadvantages. This is for one person to take care of many automated machine tool operation of workers, the requirements are very harsh.
At present, rely on artificial monitoring tool wear has far can not adapt to the requirements of automated machine tools and automation degree is increasing day by day, to achieve automatic monitoring of tool wear is to improve the machine automation, unmanned essential part. A lot of experiments have been carried out in this country, and the automatic monitoring technology of tool wear in Japan, Germany, the United States, Britain, Holland and so on has been applied to the actual production. It is reported that in the processing of direct and indirect detection tool wear up to dozens of. At present, a new type of power monitoring and protection device, which is widely used in computer power monitor.
The power monitoring device is based on the principle of the power detection method of the motor. That is, when the machine tool cutting, with the tool wear, machine tool spindle motor load and its current, voltage and current phase between the angle will change, resulting in changes in power. By using this change rule, the automatic monitoring of tool wear and fracture can be realized by microcomputer. When the power is changed to a certain value (tool wear to should be re grinding degree), automatic monitoring device to send out alarm signals, tool automatically exit the machine automatically stops running, operating workers can timely change the knife, grinding and troubleshooting.