PNEUMATIC MILLING-POLISHING MACHINE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: system of switching on and controlling the air supply and the pneumatic engine are disposed in the housing of the pneumatic machine. The reduction mechanism carrying the tool is placed on the output shaft of the pneumatic engine. Fingers are mounted and raceways are made in the housing. Balls are placed in the raceways. The output shaft of the engine is made as a crankshaft. The reduction mechanism is made in the form of a planetary mechanism with inner engagement provided the gear ratio 25≅ U≅ 60. is ensured. The drive wheel of the planetary mechanism is made with holes designed to place fingers in then. The drive wheel is mounted on the crankshaft for rolling out around the fingers. The raceways are made on the face end of the driven wheel on condition of conjunction with the balls. EFFECT: enhanced efficiency of processing with the method of the face milling or polishing of the exterior, interior spherical or flat surfaces made of a number of kinds of plastic including the special one incrusted into the harder base. 4 dwg