Roller burnishing

About: Roller burnishing is a research topic. Over the lifetime, 395 publications have been published within this topic receiving 3322 citations.

Modelling of crankshaft roller burnishing

Abstract: Roller burnishing is a surface treatment inducing compressive residual stresses with a view to enhancing endurance. A cyclic elastoplastic contact problem is thus raised, for which a model based on Simplified Analysis of Inelastic Structures is proposed, enabling fast determination of the residual stresses induced at minimum cost. Model results are compared with experimental data and results obtained by another numerical method. A parametric study has been undertaken to determine the incidence of certain of the parameters involved in the process.

Method for roller burnishing a cylindrical component part surface

Abstract: A method for roller burnishing a cylindrical component part surface of a workpiece includes using a roller burnishing tool including at least one rolling element. The at least one rolling element is pressed by hydrostatic pressurization radially outwardly against the component part surface and is left to roll down on the component part surface by rotating the roller burnishing tool or the workpiece. The torque arising as a result of the friction between the at least one rolling element and the component part surface is detected and sent for evaluation.

Roller burnishing tool

Abstract: The present invention reduces the number of components and achieves compactness by simplifying a structure, and improves maintenance. The present invention relates to a roller burnishing tool (1) having: a shank (2) mounted on a machine tool; a housing (3) which is connected to the shank, a connected position of the housing relative to the shank being adjustable; a roller support member (5) which has a cyclic cross section to follow a movement of the housing while being supported to be capable of rotating relative to the housing (3); a tapered roller (51) supported by the roller support member; and a mandrel (6) having a tapered part matched with the tapered roller. The roller burnishing tool comprises a tool diameter following device (8) connecting the shank (2) and the mandrel (6). And the tool diameter following device (8) comprises: a lead groove (24) which is prepared in a spiral shape on a cylindrical shape part formed at an end of the shank (2); a pin member (81) which is installed to be freely movable in a spiral shape along the lead groove (24); a pin member insertion hole (62b) which is formed in the mandrel (6) and is inserted with a pin member (81); and a biasing unit (82) which is mounted at the shank (2) and applies force to the mandrel (6) forward.

On the Effects of Burnishing Process on Tribological Surface Resistance of Additively Manufactured Steel

Abstract: Burnishing is a Severe Plastic Deformation process having the potential to replace expensive finishing post processes. It is considered a super finishing process due to its results in terms of drastic roughness reduction. Also, additional advantages include the surface integrity improvement functionalized to the specific application. Even though burnishing is widely applied for surface improvement of conventional materials, knowledge about its effect on additively manufactured metals is still limited. This paper aims to fill this gap presenting experiments on roller burnishing on additively manufactured stainless steel in order to improve its tribological performance. The experimental campaign was carried out to find suitable process parameters able to drastically improve the tribological behavior of the final product. In particular, the influence of the burnishing forces on the whole surface quality has been addressed. The overall results demonstrate that the selected burnishing configuration is able to successfully modify the surface characteristics of the steel, making it appropriate for critical applications. Furthermore, the experimental findings allow to conclude that burnishing process can replace a series of post processes needed after additive manufacturing, drastically reducing the time and costs associated to the manufacturing process and meeting Industry 4.0 requirements.