A telescopic cover comprising several telescopic members for a machine tool. The telescopic members can move back and forth with respect to each other and are arranged so that they can be guided with respect to the direction of movement in an overplapping manner, can extend in two directions of movement and in guide rails that are arranged in parallel and at a distance from each other. In order to provide a telescopic cover that is constructive and easy to produce and light to move, the telescopic members respectively comprise a section with which they bridge over guide rails arranged at a distance therefrom forming a continuous arc-shaped cross-section in a first cross-section perpendicular to the direction of movement.

The present invention includes a plurality of protective bodies (13, 14, 15) sequentially connected in a moving direction of a moving body and separating a movement path of the moving body from the outside. The protective body (15) at a first end is connected to a predetermined end (12a) of an area to be protected, and the protective body (13) at a second end is connected to the moving body. The plurality of protective bodies (13, 14, 15) are configured to be expanded and contracted as a whole by movement of the moving body. A structural body (35) having a groove (35a) having a top opening and forming a flow path is provided. The structural body (35) is arranged along the protective bodies (13, 14, 15) below the protective bodies (13, 14, 15) or arranged along the protective bodies (13, 14, 15) such that the lower ends of the protective bodies (13, 14, 15) are inserted in the groove (35a) through the top opening of the groove (35a). The groove body (35) is provided with a nozzle (38) ejecting a liquid into the groove (35a), and a pressurized liquid is supplied to the nozzle (38) from a liquid supply source (40).

First and second V-shaped link structures are arranged in an overlapping manner such that a first fixed pin and a second fixed pin of the first V-shaped link structure are positioned relative to a movable pin to one side with respect to the direction parallel to the longitudinal direction of a guide rail while a first fixed pin and a second fixed pin of the second V-shaped link structure are positioned relative to a movable pin to the side opposite to that in the first V-shaped link structure.

A liquid drainage mechanism drains oil (liquid) from a Y-axis slider that moves along a predetermined path. The liquid drainage mechanism includes an outflow hole and a nozzle flow passage that are provided in a C-axis rotary mechanism and configured to flow the oil in a stator, a nozzle configured to move integrally with the Y-axis slider and discharge the oil, and a Y-axis guide member configured to guide the Y-axis slider. The nozzle is disposed at a position that is close to but not in contact with the Y-axis guide member, and the nozzle discharges the oil so that the oil reaches the Y-axis guide member.

First and second V-shaped link structures are arranged in an overlapping manner such that a first fixed pin and a second fixed pin of the first V-shaped link structure are positioned relative to a movable pin to one side with respect to the direction parallel to the longitudinal direction of a guide rail while a first fixed pin and a second fixed pin of the second V-shaped link structure are positioned relative to a movable pin to the side opposite to that in the first V-shaped link structure.

The invention relates to a protective cover comprising a plurality of protective cover segments (1), which can be moved telescopically against one another and which have a covering leg (2) and a supporting leg (3), and comprising a connecting element or bellows (4). When the protective cover is telescopically extended, an elastic restoring element produces a torque (M) and transfers said torque to the supporting leg (3). The invention is characterized in that the elastic restoring element is an integral component of the connecting element (4) in that the connecting element (4) has flexural rigidity and is connected to the supporting leg (3) in a planar manner along a height portion (h) of the supporting leg (3). Owing to the invention, an additional elastic restoring element and the attachment thereof to the supporting leg are no longer necessary. Thus, the compressed size, the weight and the production complexity of the protective cover can be reduced, and the leak tightness and reliability of operation are improved.

A liquid drainage mechanism drains oil (liquid) from a Y-axis slider that moves along a predetermined path. The liquid drainage mechanism includes an outflow hole and a nozzle flow passage that are provided in a C-axis rotary mechanism and configured to flow the oil in a stator, a nozzle configured to move integrally with the Y-axis slider and discharge the oil, and a Y-axis guide member configured to guide the Y-axis slider. The nozzle is disposed at a position that is close to but not in contact with the Y-axis guide member, and the nozzle discharges the oil so that the oil reaches the Y-axis guide member.

A telescopic cover comprising several telescopic members for a machine tool. The telescopic members can move back and forth with respect to each other and are arranged so that they can be guided with respect to the direction of movement in an overplapping manner, can extend in two directions of movement and in guide rails that are arranged in parallel and at a distance from each other. In order to provide a telescopic cover that is constructive and easy to produce and light to move, the telescopic members respectively comprise a section with which they bridge over guide rails arranged at a distance therefrom forming a continuous arc-shaped cross-section in a first cross-section perpendicular to the direction of movement.