| 摘要 |
PCT No. PCT/FR96/01996 Sec. 371 Date Jun. 18, 1998 Sec. 102(e) Date Jun. 18, 1998 PCT Filed Dec. 13, 1996 PCT Pub. No. WO97/22832 PCT Pub. Date Jun. 26, 1997A telescoping protective cowling for removing part of a machine tool. The device includes at least three elements consisting of panels and one of which is stationary or relative to the frame and provided with a window with inside edges restricting the freedom of movement of a moving part. The second panel is slidable relative to the first panel along two axes, is longer than the window of the first panel and is provided with a window within which the moving part is free to move. The third panel is movable and substantially larger than the window in the first panel and receives the moving part in its central portion. As a result, the movements of the moving part in the plane of the two axes in the window in the first panel means that the second panel has a proportional mobility and is thus able to fill the opening of the window in the first panel after it has been left clear by the third panel following the movements of the moving part. |
