Abstract: The machine for abrasive treatment comprises an abrasive tool (1) and a device for establishing the holding-down force within the machining zone, said device having a housing (3) provided with guideways, wherein poppet sleeves (4) carrying spindles (5) are free to reciprocate so as to translate the holding-down force to the abrasive tool (1), and a feed mechanism (14) located on the housing (3). According to the invention, in the device for establishing the holding-down force the poppet sleeves (4) are interlinked through an elastic member which is regidly coupled to the feed mechanism (14), while the latter mechanism is adapted to damp the travel of the elastic member in the forward and reverse directions of feed.

Abstract: An apparatus for abrasive machining has an annular support (1) and a faceplate (5) which is operatively connected to a drive and is mounted on a thrust bearing (2) for rotation in a radial bearing (8). According to the invention, the faceplate (5) has a coaxial bushing (7) journalled in the radial bearing (8), and the faceplate (5) and the annular support (1) are elastically coupled to each other by means of an axle (9) extending through the bushing (7) and biased by a spring in the direction of preload in the thrust bearing (2), the faceplate (5) being connected to the axle (9) for rotation relative thereto by an auxiliary thrust bearing (12) and having on the outer cylindrical periphery thereof a driven member of the drive, a plane (17) drawn through the middle of width of the driven member (16) of the drive extending through a plane (18) drawn substantially through the middle of width of the radial bearing (8 ).

Abstract: In a machine tool for abrasive machining of planar surfaces having a bed (1) supporting a workhead (28), a faceplate (9) carrying an abrasive tool (11), which is mounted for rotation by means of a thrust bearing (13) on an annular support (12) attached to the bed (1) and which is rotated by a coaxial drive shaft (3) journalled in antifriction bearings (16), and an adjustable means for pressing the faceplate (9) against the annular support (12), comprising an air-powered diaphragm (21) having a hollow rod (15) through which extends the drive shaft (3), according to the invention, the annular support (12) has a coaxial bushing (14) in which the hollow rod (15) is mounted for axial movement and to which a casing (22) of the air-powered diaphragm (21) is attached, the antifriction bearings (16) of the drive shaft (3) being mounted in the hollow rod (15) and the drive shaft (3) being coupled to the faceplate (9) by means of an elastic member (8).

Abstract: A method of machining outer surface of bodies of revolution by way of cutting, wherein a blank and a cutting tool are rotated about their axes, arranged out of line in mutually perpendicular planes, and are moved relative to each other at the beginning of a pass in the direction perpendicular to the blank surface being machined for cutting-in through the cutting depth, while the length of the cutting edge of the cutting tool is selected such that it spans the width of the blank cutting surface and, in the course of the cutting tool rotation, successively passes the blank cutting surface over the entire length thereof.The cutting machine for accomplishing the above process, has bed stocks which are mounted for positioning and rotating the blank being machined, and a rest arranged in guides provided in the bed.