| 摘要 |
A tangential grinding machine slidable on the rails to be ground comprises a base structure (2) mounted on wheels (4) slidable on the rails (6) to be ground, at least one grinding unit (8) freely slidable along the cross-members (12) of the base structure (2), said grinding unit (8) comprising a frame (14) rigidly movable vertically relative to said base structure (2) towards and away from the rail (6), said frame (14) being rigidly supportably at least two longitudinally aligned plates (30) supporting a grinding wheel (36) with a rotatable axis transverse to the rail (6) longitudinal axis and a bar (54) hinged at its ends to the base structure (2) and to the grinding unit (8) respectively, there being connected to the frame (14) supporting the plates (30), a gearmotor (48) provided with a vertical axis worm (50), the end of which rests on the grinding unit (8), a control unit being associated with said gearmotor (48) to control the frame (14) descent following wear of the grinding wheel (36). |
