Abstract: A workpiece protecting wire net composed of a spiral spring, and a netting; one end of the spring is formed as a spiral enclosing end, while the other end thereof a hollow openning end, milled workpieces are placed in the chamber of the spring through the opening end, the netting is then put on the spring to have each pitch and the openning end of the spring covered thereby; in a grinding fluid for three dimensional vibration milling in a tank, meshes of the net allow grinding medium and the fluid to penetrate freely so as to adequately transmit a vibration action, and to render the medium and the fluid to grind the surfaces of the workpieces, and to protect the workpieces in the net from collision or tangling with one another, and protection of the spring can be achievced here by the PE netting.

Abstract: The shield of this invention has a skirt that is tilted or slanted forward which, together with longer bristles, provides a substantial improvement in these type devices. Also provided in the shield of this invention is an adjustable, slanted clamp that can be adapted for connection to various size sanders. A baffle is also included within the shield to form a tunnel effect which enhances suctioning or vacuuming off of debris resulting from the sanding operation.

Abstract: A machine tool comprises a workpiece table that can rotate about a vertical axis. A first spray shielding panel is rigidly attached to the workpiece table substantially along one diameter thereof. It divides the workpiece table into a placement side and a machining side. A second spray shielding panel is stationary and is arranged above the first spray shielding panel, and runs substantially parallel thereto. An articulated third spray shielding panel connects the first and second spray shielding panel to one another. It is connected at its top in a hinged manner to the second spray shielding panel and is provided with a channel at its bottom that encloses an upper edge of the first spray shielding panel over a finite length.