| 摘要 |
Machine tool, comprising a base (1) with a bottom (10) and a peripheral wall (11) of predetermined height to delimit an internal volume of predetermined capacity and open at the top, in which on the upper edge of said wall (11) is placed, removably, a pierced cover (2), or a work-piece carrier surface provided with through holes (20) through which a refrigerant liquid is free to fall, and wherein an electric motor (4), on which is engaged a tool holder (7), is placed in said inner volume, and wherein said electric motor (4) is inserted in a protection chamber (5) which protects it from the refrigerant liquid passing through said holes (20). The electric motor (4) is connected to corresponding lowering and lifting means, by means of which the tool holder (7) is lowered and raised accordingly, so producing the lifting and lowering of a respective tool (3) through the cover (2). |
