Study on Influence of Cutting Parameters on Surface Morphology of TC4 at Different Tool Angles
In order to solve the problem that the surface morphology of TC4 titanium alloy curved surface parts is un-stable due to the variation of tool angle during finishing,the effects of cutting speed and feed per tooth on surface roughness and surface morphology under different tool angle are studied and analyzed through cutting experiments with four different tilt angles.The results show that when the tool angle is between 20° and 50° and the cutting speed is 55m/min,the surface roughness is less affected by the tool angle and stable and good surface quality can be obtained at this cutting speed.When the tool angle is 30°,the surface of all part is smooth.In the other group,vibration ripples perpendicular to the tool marks appear under individual combination of cutting parameters.When the cutting speed or the feed per tooth is large,it is easi-er to produce surface vibration ripples,and the larger the cutting speed,the higher the surface vibration ripple frequency.When the tool angle is in the range of 20° to 50°,the surface roughness has a decreasing trend with the increase of cut-ting speed,but the decreasing degree is different under different tool angle.However,when the tool angle is larger,the surface quality is deteriorated due to intensified tool vibration,and the surface roughness values is increased with the cut-ting speed.
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