Abstract
AbstractModern industry demands low cost, high productivity and ability to create complex geometries with good product quality. Even though 3D printing or additive manufacturing is getting popular in manufacturing sector, it is still quite difficult to replace traditional machining processes. Heat generation at the tool chip interface due to friction is the major concern with conventional machining processes. Cooling techniques like minimum quantity lubrication (MQL) and nanofluid-based minimum quantity lubrication (NMQL) have replaced flood cooling technique based on mineral oils which are hazardous to operators as well as to the environment. Coated carbide inserts like AlTiN, TiAlN are preferred to machine difficult-to-machine materials like titanium- and nickel-based alloys. Cryogenic cooling techniques using fluids like liquid nitrogen are also employed. This article presents recent advances in design of textured cutting inserts employed under dry, solid lubricant, MQL, NMQL cutting environment. Creation of textures like dimples, linear grooves parallel and perpendicular to chip flow, linear grooves inclined to cutting edge, combination of dimples and linear grooves on the rake and/or flank face will reduce the chip–tool contact area. They also act as reservoir for the supply of cutting fluid. With the use of textured cutting inserts, there is a significant improvement in machining characteristics which include better surface finish, reduction in cutting forces and cutting zone temperature and increase in tool life. KeywordsDimple textureDry machiningMinimum quantity lubricationGraphene
Published Version
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