Machine tool and lubricant jetting state detector for machine tool

Abstract

A machine tool capable of jetting atomized lubricant (h) forward from the tip of a cutter (), characterized by comprising a lubricant jetting state detector for detecting the jetting state of the atomized lubricant from the tip of the cutter, the lubricant jetting state detector further comprising a guide member () having a straight inner hole (), wherein a light detection device for detecting the degree of transmission or reflection of the detection light due to injecting the direction light (c) to a specified position (b) inside the inner hole through a transparent member installed on the peripheral wall portion of the guide member or through the transparent peripheral wall portion of the guide member, and a fluid feed device () for feeding clean fluid of rather thin layer flowing in a specified direction along the longitudinal direction of the inner hole is installed near the inner surface of the transparent member or so as to cover the transparent peripheral wall portion, whereby a defective part due to the work machining with insufficient lubricant can be surely prevented from being produced.