Grandmother

Grandma - Common name of the site of some metal-cutting or woodworking machines. The headstock (headstock, headstock) is equipped with a spindle, informing the rotational movement of the workpiece or tool, mounted in the fixture (chuck clamp, collet, centers). B. back, or thrust, has a tapered hole to set the center supporting the workpiece or to fasten the tool (drill, etc.). B. Grinding - a unit of circular and flat grinding machines, carrying a spindle with a grinding wheel and informing them of rotational motion.