The present invention relates to a method for smoothing a surface of a component, in which a component is placed in a liquid-solids mixture; a relative movement is produced between the liquid-solids mixture and the component; thus there is a flow of the liquid-solids mixture along the surface; wherein there is provided in the liquid-solids mixture a guide surface, along which the liquid-solids mixture flows, wherein a directional component toward the surface is imposed on the flow.

A method for abrasive flow machining includes moving an abrasive media through a high-aspect passage of a workpiece. Local pressure of the abrasive media is increased at target abrasion surfaces of the high-aspect passage using a passage geometry that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into.

A method of altering an additively manufactured part can include orienting a surface of the additively manufactured part toward a rotational center that may be independent of a rotational axis defined by the additively manufactured part, flowing an abrasive media past the surface, rotating the additively manufacturing part about the rotational center; urging abrasive particles in the abrasive media past the surface abrasive media to impinge the surface with centrifugal force generated by the rotating, and improving surface finish of the surface.

A method for smoothing and polishing metals via ion transport by free solid bodies comprises connecting a part to be treated to a positive pole (anode) of a current generator and subjecting the part to friction with a set of particles comprising electrically conductive free solid bodies charged with negative electrical charge in a gaseous environment.

A method for abrasive flow machining includes moving an abrasive media through a high-aspect passage of a workpiece. Local pressure of the abrasive media is increased at target abrasion surfaces of the high-aspect passage using a passage geometry that is configured to direct flow of the abrasive media into the target abrasion surfaces such that the target abrasion surfaces are preferentially polished by the abrasive media over other, non-targeted surfaces of the high-aspect passage at which the flow of the abrasive media is not directed into.

Various examples are provided for hybrid tools including fixed-abrasive and loose-abrasive phases. In one example, a hybrid tool for finishing an internal surface of a workpiece includes a metallic rod and magnetic abrasive bonded to one or more defined portions of the metallic rod by an adhesive that dissolves when n contact with a lubricant used to finish the internal surface of the workpiece. In another example, a method for finishing an internal surface of a workpiece includes mounting the workpiece in a chuck of a lathe; positioning a hybrid tool inside an internal cavity of the workpiece using one or more pole-tips; providing an amount of the lubricant to the internal cavity; and rotating the workpiece with the lathe while controlling positioning of the hybrid tool inside the internal cavity using the one or more pole-types.

A wheel shape follow-up burr brushing device can brush burrs from a front, a back cavity and a spoke root groove of the wheel. The heights of brushes are adjusted, so that the brushes follow up the shape of the front, the back cavity and the spoke root groove of the wheel. The wheel is put onto a positioning roller bed by a manipulator, a positioning clamping cylinder drives four clamping wheels to clamp the wheel, four clamping wheel drive motors drive the wheel to be in a low-speed rotating state; two second cylinders drive a second rotating table to be fed downwards, two first cylinders drive a first rotating table to be fed upwards, and the rotating wheel is matched with the rotating brushes to brush burrs from the front, the back cavity and the spoke root groove of the wheel.

A hollow spring includes a steel tube in which the average of surface roughness is smaller than 10 m across the entire inner surface of the steel tube and/or compressive residual stress is given to the entire inner surface of the steel tube. The hollow spring may be manufactured by a step of polishing the inner surface of the steel tube by flowing a viscoelastic abrasive medium (200) within the tubular member (10), between a first opening (11) and a second opening (12) of the tubular member (10). The abrasive medium (200) may include a viscoelastic base material and a granular abrasive. The inner surface of the steel tube is polished evenly to reduce the surface roughness and/or is given compressive residual stress to increase the fatigue life of the hollow spring.

A method includes providing a metal ring and pastelessly slide-grinding at least one surface of the metal ring with grinding bodies, preferably until a predefined surface topography of the metal ring is achieved, which surface topography preferably has an Rsk value that is greater than or equal to 0.25 and/or an Rk value between 0.3 and 1.35 and/or Rpk value between 0.05 and 0.4 and/or an Rvk value between 0.2 and 1.2 and/or an Ra value between 0.1 and 0.4.

A magnetic polishing machine includes a container which accommodates a polishing target and a plurality of polishing pieces, a plurality of rotation plates which are rotatably disposed below the container while a magnet is attached to the rotation plate, and a first rotation mechanism which rotates each rotation plate about a rotation axis of the rotation plate. The adjacent rotation plates are disposed at a position in which rotation areas thereof partially overlap each other.