Method and device for producing a friction bearing or a part thereof, and friction bearing or part thereof
AssigneeFederal-Mogul Wiesbaden GmbH
InventorPhilippe Damour
Life of this patent
Estimating the term…
Abstract
According to a method for producing a friction bearing or a part, particularly half thereof, while machining the entire width of an inner surface both the radial extension and also the advance in the axial direction of at least one tool are changed during machining. A device for machining friction bearings or parts, particularly halves thereof, has a spindle and at least one cutting tool (14), the radial extension and advance of which can be changed during machining. In a friction bearing or part, particularly half thereof, slots or grooves are formed running in the peripheral direction, the depth and centre distance of which are designed to be larger in at least one axial edge area than in an axial central area.
Claims17
A method for producing a friction bearing or a part thereof, in particular a half thereof, in which, while machining the entire width of an inner surface, both the radial extension and the feed rate in the axial direction of at least one tool are changed during machining.
A device for machining friction bearings or parts, in particular halves thereof, with a spindle and at least one cutting tool, the radial extension and feed rate of which can be changed during machining.
A friction bearing or part, in particular halves thereof, in which slots or grooves extending in the circumferential direction are formed, the depth and center distance of which is formed larger at least in an axial edge area than in an axial central area, and in which the slots or grooves have a width or a center distance of approximately 0.27 mm to 0.31 mm in an axial central area and/or of 0.49 mm to 0.53 mm in at least an axial edge area.
A friction bearing or part, in particular halves thereof, in which said slots or grooves extending in the circumferential direction have a depth of approximately 1.7 μm to 2.1 μm and in particular approximately 1.9 μm in an axial central area, and/or have a depth of approximately 5.6 μm to 6.0 μm and in particular approximately 5.8 μm in an axial edge area.
A friction bearing or part, in particular halves thereof, in which said slots or grooves extending in the circumferential direction have a width or a center distance of approximately 0.29 mm in an axial central area and/or of approximately 0.51 mm in at least one axial edge area.
A friction bearing or part, in particular halves thereof, in which said slots or grooves extending in the circumferential direction have a radius of approximately 5.4 mm to 5.8 mm and in particular approximately 5.6 mm in a plane containing the rotation axis.
Dependencies are inferred from the claim text.