Abstract: A chip removing apparatus for a machine tool by which strong spiral air flows are produced in a dust collection cover to compulsorily move chips upwardly into a chip sucking passage to remove the chips efficiently. The chip sucking passage is defined between a housing of a working head and a motor accommodated in the housing, and a tool chuck is connected to a rotary shaft of the motor. The dust collection cover is mounted at a lower portion of an outer periphery of the housing and surrounds the tool chuck with a dust collection space left therebetween. The chip sucking passage in communication at a lower portion thereof with an upper portion of the dust collection space, and is connected at an upper portion thereof to a suction duct.

Abstract: An automatic polishing machine which can polish a curved skin of a large area fully automatically and efficiently along a three-dimensional plane of the skin. The machine comprises a fixed horizontal beam, a movable table movable in a horizontal direction perpendicular to the beam for receiving thereon a work to be polished, a carriage mounted for movement on the beam, a slider mounted for up and down movement on the carriage, a turning member mounted for forward and backward turning movement within a predetermined angular range on an arcuate rail which is located at a lower end portion of the slider and has an upwardly swollen arcuate configuration, a rocking member mounted for up and down rocking motion on the turning member, a spindle supported for rotation on the rocking member, and a buff removably mounted on the spindle.