Abstract: The present invention provides an axial machining device comprising a tool-carrier spindle rotatable in a housing, the housing housing a transmission system causing the spindle to advance automatically relative to the housing under the effect of the tool-carrier spindle being driven in rotation, the transmission system including an advance gearwheel screwed onto the spindle, the device including a resilient return member urging the advance gearwheel in a first axial direction opposite to the advance direction of the spindle, and also including a first rolling bearing having rolling members rolling on an undulating raceway having an axial component, thereby periodically urging the advance gearwheel to move in a second direction opposite to the first, such that rotation of the spindle is accompanied by axial vibratory motion.

Abstract: A rolling bearing includes at least a first ring with an undulating rolling surface and a second ring, the rings being coaxial and given a relative rotational and reciprocating axial movement, and at least one row of rolling bodies mounted in rolling contact between the respective rolling surfaces on the rings. The rolling bearing further includes at least a third ring with an undulating rolling surface that collaborates with either the first row of rolling bodies or with a second row of rolling bodies, the second row of rolling bodies being inserted between the rolling surface of the third ring and a rolling surface of a fourth ring. At least one of the third or fourth rings is mounted to rotate as one with the first or second ring respectively, and the rings which rotate as one are mounted such that they can move axially one relative to the other.

Abstract: The present invention provides an axial machining device comprising a tool-carrier spindle rotatable in a housing, the housing housing a transmission system causing the spindle to advance automatically relative to the housing under the effect of the tool-carrier spindle being driven in rotation, the transmission system including an advance gearwheel screwed onto the spindle, the device including a resilient return member urging the advance gearwheel in a first axial direction opposite to the advance direction of the spindle, and also including a first rolling bearing having rolling members rolling on an undulating raceway having an axial component, thereby periodically urging the advance gearwheel to move in a second direction opposite to the first, such that rotation of the spindle is accompanied by axial vibratory motion.

Abstract: The invention relates to a rolling bearing (1) comprising at least a first ring with an undulating rolling surface (21) and a second ring (2, 4), the rings being coaxial and given a relative rotational and reciprocating axial movement, and at least one row of rolling bodies (7) mounted in rolling contact between the respective rolling surfaces provided on the said rings.