Abstract:
A nozzle through which a liquid coolant is discharged is provided with an outer tube, a projecting member and an inner tube disposed inside the outer tube, and an elastic body disposed between the inner tube and a discharge port of the outer tube. If foreign matter accumulates on a nozzle opening of the inner tube, the elastic body is compressed by the inner tube under the pressure of the coolant, so that the inner tube moves toward the discharge port. Consequently, the projecting member penetrates the nozzle opening, thereby automatically removing the foreign matter accumulated on the nozzle opening.
Abstract:
In a machine tool, a saddle is supported by a guide disposed on a bed. A cover protecting the guide is secured to the saddle and moves together with the saddle to enter or leave a space formed under a column. A chip intrusion stopper is attached to the column to prevent chips from entering the space when the cover and the saddle enter the space.