Research On The Surface Quality Of Titanium Alloy With Micro-Textured Ball-End Milling Cutter

Titanium alloys due to low thermal conductivity and high chemical activity lead to serious tool wear and low cutting efficiency which is the main factor restricting its development. In recent years, micro-texture as a new type and effective method for controlling friction, which improve the contact friction between tool and chip effectively. Therefore, on the characteristics of the tool wear easily, it is essential to know the micro-textured applied on the cutting can reduce the friction and wear. At the same time to ensure and improve the surface quality of the workpiece. Based on the micro-texture ball-end milling cutter as the research object, the effect of anti-friction and anti-wear by different texture types are researched. Finally, the optimal location and arrangement of microtexture is determinedFirstly, considering the influence of the texture characteristics on friction and wear characteristics, elastic-plastic finite element model is established. Finite element analysis method is used to calculate stress distribution of specimens in the friction and wear process. With micro-texture friction and wear test, wear morphology of different micro-texture parameters specimen are analyzed. Combined with the results of stress field distribution, wear mechanism of plate and ball specimens are got.Secondly, based on the finite element simulation software ABAQUS, texture type, the cutting edge distance and offset angle as variables, the process of micro-textured ball-end milling machining cant is simulated, the stress distribution and its equivalent plastic deformation of the workpiece are obtained.Thirdly, the micro-textured ball-end milling force experiment are set up to explore the influence of cutting edge distance, angle and the texture types on cutting force. At the same time, test cutting force data and simulation data are contrasted to prove the reliability of simulation results.Finally, surface roughness, surface morphology, surface hardening and metamorphic layer texting data are obtained by the micro-textured ball-end milling surface quality experiment. Combined with stress field distribution, the influence of texture morphology and none milling cutter on the relevant parameters of surface quality are analyzed. At the same time, the influence of surface quality on micro-textured ball-end milling different distances is studied in order to obtained effective cutting distance. Based on the comparison of the above analysis and experimental data in order to provide a theoretical basis for texture parameters optimization.