Machining center for valve rod machining

The invention discloses a machining center for valve rod machining. A collecting box is arranged on the lower side in a machine tool; two screen frames are inserted into the upper side of the front end of the collecting box; an upper filter screen and a lower filter screen are installed in the upper screen frame and the lower screen frame respectively; a liquid containing box is inserted into the lower side of the front end of the collecting box. When a valve rod is machined, a mixture of waste chips and cooling liquid falls into the collecting box, the effect of filtering the waste chips can be achieved through the upper filter screen and the lower filter screen in the collecting box, the cooling liquid falls into the liquid containing box through the upper filter screen and the lower filter screen, and therefore the mixture of the waste chips and the cooling liquid can be conveniently separated; and when the upper filter screen and the lower filter screen need to be cleaned, the screen frame can be inserted