... Abstract By introducing local depressions, as small reservoirs for lubricants and wear debris, on a flat surface, the surface texture has been proven to positively affect the friction and wear behavior of lubricated sliding surfaces. However, the effectiveness of the surface texture diminishes...

...-up-edge did not result in satisfactory results yet - largely because of mathematical, physical and metallurgical reasons. This paper bo; b1 width presents a new mathematical-physical model to describe the total process mechanics from volume conservation, to friction, to C45 carbon steel with 0.45% C...

.... But the real complex phenomena at the cutting edge can’t be explained with the help of simplified models. This paper presents a new mathematical-physical model describing the process mechanics leveraging two kinds of friction to explain the metal behavior to strain and stress with self-hardening or softening...

...Abstract Abstract Linear ball guideways are widely employed in machine tool drive systems. Friction fluctuation of linear ball guideways cause the fluctuation of feed rate which results in the contour error in synchronous motions using several feed drives. A model-based systematic methodology...

... play an important role in all metal cutting processes. Conditions are changing progressively not only to high velocities and deformation, but also to the interfacial friction between two different materials tool and workpiece, and inside the same material, as a result of material flow with high...

... with practical results To solve these problems, we have to uncover all previous simplification assumptions for the existing models. This leads in a first step to a new fundament in process mechanics, which is only based on mathematics, physics and material behavior with friction conditions, and resulting...

...THE REALITIES OF FRICTION IN METAL PLASTIC FLOW WITH CORRESPONDING RESULTS DURING METAL CUTTING Prof. Dr.- Ing. Wolfgang Lortz1 Radu Pavel, Ph.D. University of Applied Sciences Schneidershof D 54 293 Trier, Germany TechSolve, Inc. Cincinnati, Ohio, U.S.A. 1 Contact author womalortz@outlook.com...

... 1 Copyright © 2013 by ASME FEASIBILITY OF LASER SURFACE TEXTURING FOR FRICTION REDUCTION IN SURGICAL BLADES Tim Velasquez Department of Mechanical Engineering Northwestern University Evanston, Illinois, USA Peidong Han Department of Mechanical Engineering Northwestern University Evanston, Illinois...

... 19 09 2011 Micro/meso-scale forming is a promising technology for mass production of miniature metallic parts. However, fabrication of micro/meso-scale features leads to challenges due to the friction increase at the interface and tool wear from highly localized stress. In this study...

... of the challenges in THF is the nonlinear and varying friction conditions at the tube-tool interface, which make it difficult to establish accurate loading paths (pressure vs feed) for THF. A THF process control model that can compensate for the loading path deviation due to frictional errors in tube hydroforming...

... 22 09 2010 In the present investigation, tip test based on backward extrusion was utilized to characterize the effect of surface roughness of the billet and forming tools and type of lubricants on friction. For the test, cylindrical specimens made of aluminum alloys of 6061-O and 2024...

... application to the classic Merchant Force Diagram is then developed. Metal Cutting Orthogonal Metal Cutting Merchant Force Diagram Cutting Forces Friction 1 Copyright © 2009 by ASME Proceedings of the ASME 2009 International Manufacturing Science and Engineering Conference MSEC2009 October 4-7...

... 26 03 2009 Surface texturing has become a valuable technique for reducing friction and wear in contacting parts; laser surface texturing is one such method used to create micro-dimples on the interface surface. This work investigates the surface material property variation caused...