13results about "Burnishing machines" patented technology

This invention relates to machining tools and surface finishing methods using the DL (deep-drilling) method, the tools comprising ceramic-metal composites with uniformly polished surfaces. In some embodiments, the machining tool exhibits compressive stress less than -500 MPa after polishing, or equal to or greater than 40% of the compressive stress generated during the grinding process. In some embodiments of the invention, the machining tool has a uniformly polished surface along the cutting edge, i.e., perfect flatness between the metal and ceramic components of the tool, such that the roughness of the cutting edge is in the sub-micron range. In some cases, the machining tool has a roughness variation along the cutting edge and adjacent surfaces along the tool's uniform or regular cutting edge.

A linear reluctance actor is provided comprising a stator supporting at least one coil and a rotor. The coil is designed as a bifilar winding and the linear actor includes at least one resetting element allowing the rotor to be brought into a predefined initial position after a stroke movement.

Provided is a reduction gear that is thinner than a conventional one without impairing performance and characteristics. The present invention is a reduction gear (1) comprising: an eccentric shaft (4) in which eccentric portions (41, 42) perform an eccentric motion by rotation of a shaft; planetary gears (51, 52) which perform an eccentric motion by the eccentric motion of the eccentric portions (41, 42); a case (9) which functions as internal teeth for the planetary gears (51, 52); and a carrier (7) which is connected to the planetary gears (51, 52) and which outputs rotation of the planetary gears (51, 52), wherein each component of the planetary gears (51, 52) and the carrier (7) is produced to have a thickness less than that of a conventional component by a proportion corresponding to the increase in torsional rigidity of each component due to shot peening when a material is processed, and thereafter shot peening is performed on a surface of the component so that the torsional rigidity is increased.

The present disclosure discloses a system for peening an inner surface of a hollow spiral extension member (E), the system including a configuration that supplies an ultrasonic transmission medium (M) for ultrasonic cavitation to a peening target region of a target. The system for peening an inner surface includes a medium tank (110) configured to accommodate an ultrasonic transmission medium (M), a connection pipe (120) respectively connected to a hollow spiral extension member (E) and the medium tank (110), the connection pipe (120) being configured to form a movement flow path for the ultrasonic transmission medium (M) from the medium tank (110) into the hollow spiral extension member (E), a pressure adjuster (130) connected to the medium tank (110) and configured to control a flow of the ultrasonic transmission medium (M) by adjusting pressure in the medium tank (110), and an ultrasonic generator (140) installed in the connection pipe (120) and configured to generate ultrasonic waves toward the inside of the hollow spiral extension member (E) in the connection pipe (120) so that ultrasonic cavitation peening is performed on an inner surface of the hollow spiral extension member (E) in a state in which the inside of the hollow spiral extension member (E) is filled with the ultrasonic transmission medium (M).

To provide a method for manufacturing a bearing component capable of efficiently eliminating gaps existing around a non-metallic inclusion.SOLUTION: In a method for manufacturing a bearing component, in order to reduce gaps between a non-metallic inclusion and a matrix in a region of a surface of a workpiece on which a load is applied when used as a bearing component, a rolling element is rolled in a contact manner and pressed to plastically deform the workpiece. Then, the workpiece after the plastic deformation is subjected to heat treatment to give it a Rockwell hardness of 58 HRC or more. As the rolling element, a sphere or roller can be used. Also, the rolling element can be pressed against the workpiece with a working surface pressure within a range of 3.5 GPa or more and 5.5 GPa or less.SELECTED DRAWING: Figure 1

The invention relates to a device (1) for processing, in particular deep rolling, shafts (4) and other components, comprising two live centres (2A, 2B) for receiving a shaft (4) to be processed on both sides, at least one drive (6A, 6B) for rotating the shaft (4) to be processed, at least one pair of rolling tools (8A, 8A', 8B, 8B', 8C, 8C') for processing, in particular deep rolling, the shaft (4) to be processed, wherein the two live centres (2A, 2B) are arranged on a central axis (3), wherein at least one live centre (2B) can be moved along the central axis (3), wherein at least one pair of rolling tools (8A, 8A', 8B, 8B', 8C, 8C') is arranged on a moving axial carriage (10A, 10B, 10C), which can be moved along the central axis (3), and wherein the rolling tools (8A, 8A', 8B, 8B', 8C, 8C') can be moved in a radial direction relative to the central axis (3). In order to achieve an efficient processing of components with a different geometry, at least one change-over device (11A, 11A', 11B, 11B') is provided for exchanging the rolling tools (8A, 8A', 8B, 8B'). The invention also relates to the use of a device of this type for deep rolling shafts (4), in particular wheel set axles of wheels sets for rail vehicles.

This enables the creation of a thinner gearbox than conventional gearboxes without compromising performance or characteristics. [Solution] In a reduction gear 1 comprising an eccentric shaft 4 in which eccentric parts 41 and 42 perform eccentric motion due to the rotation of the shaft, planetary gears 51 and 52 rotatably supported by the eccentric parts 41 and 42 and performing eccentric motion in synchronization with the eccentric motion of the eccentric shaft 4, a case 9 to which a plurality of outer peripheral pins 6 that function as internal teeth for the planetary gears 51 and 52 are rotatably attached, and a carrier 7 which is rotatably supported by the eccentric shaft 4 and consists of covers 71 and 72 that clamp the planetary gears 51 and 52 and outputs the rotation of the planetary gears 51 and 52, the planetary gears 51 and 52 and the covers 71 and 72 are manufactured by reducing their size by the amount by which the torsional rigidity of each part is increased by shot peening when processing the material, and shot peening is applied to the surface of the parts.

A method for coating and deep rolling brake discs (B) is illustrated and described, comprising the following steps: b) providing a device (V5) for coating brake discs (B), d) providing a device (V7) for deep rolling the coated brake discs (B), e) providing a device (1) for transporting brake discs (B), i) coating the first side of the brake disc (B), j) coating the second side of the brake disc (B), and k) deep rolling both sides of the coated brake disc (B), wherein the brake discs (B) are transported by the transport device (1) at least between the device (V5) for coating brake discs (B) and the device (V7) for deep rolling the coated brake discs (B). In order to solve the problem, it is proposed that steps i) and j) are carried out successively on the same device (V5) for coating brake discs (B).

The invention relates to a method for smoothing and / or hardening a surface (2) of a joint ball (3) of a joint inner part (4), wherein at least one smoothing roller (5, 6, 6') is pressed against the joint ball (3) and the rotational movements of the smoothing roller (5, 6, 6') and the joint inner part (4) are coordinated so that sliding and / or slippage occurs between the joint ball (4) and the at least one smoothing roller (5, 6, 6') by means of - an active acceleration or deceleration of the rotational movement of the inner joint part (4) about the central longitudinal axis (9) is generated, and / or - is produced by the use of two smoothing rollers (5, 6), wherein the two smoothing rollers (5, 6) have different diameters, and / or - is generated by the use of two smoothing rollers (5, 6, 6'), wherein the two smoothing rollers (5, 6, 6') are operated at different rotational speeds with respect to the rotational movement about the axis of rotation (7, 8) of the respective smoothing roller (5, 6, 6').

Methods and devices are provided for performing ultrasonic shot peening (USP) on a component of an engine. A USP head unit (300) is configured for performing USP. The USP head unit (300) includes a treatment enclosure (302) containing peening media. USP is performed on the component using the USP head unit (300). The USP head unit (300) also includes a peening block (1202) coupled to the treatment enclosure (302), and a guide window (902) extending from within the treatment enclosure (302), through the peening block (1202) and to the component. Performing USP includes vibrating the peening media within the treatment enclosure (302) and the guide window (902) at an ultrasonic frequency such that the peening media impacts against the component from within the guide window (902).

The invention relates to a method for roller burnishing workpiece surfaces (10f, 10g, 10h, 18h, 18g, 18i), having the following steps: a) providing a workpiece (7f, 7g, 7h, 7i), b) providing a first roller burnishing tool (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h), said first roller burnishing tool (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h) comprising a first roller burnishing surface (2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h) for roller burnishing workpieces (7f, 7g, 7h, 7i), and c) roller burnishing the workpiece (7f, 7g, 7h, 7i) using the first roller burnishing tool (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h), wherein the first roller burnishing surface (2, 2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h) contacts and roller burnishes the workpiece surface (10f, 10g, 10h, 18h, 18g, 18i) of the workpiece (7f, 7g, 7h, 7i) during the process of roller burnishing the workpiece (7f, 7g, 7h, 7i) using the first roller burnishing tool (1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h).