Research On The Effect Of Milling Cutter Cutting Edge Curvature On Tool Wear

As one of the main methods of surface forming of mechanical parts,cutting processing occupies an important position in actual production,in which cutting tools play an important role.In the cutting process,the tool gradually wears under high temperature and high pressure.After the tool wears,the cutting force increases,the cutting temperature rises,and the vibration occurs,which seriously affects the surface quality and machining accuracy of the workpiece.Therefore,it is very important to wear learning materials during the cutting process.During cutting,changing the curvature of the cutting edge of the tool,the maximum cutting width and the maximum milling area will change accordingly,and the resistance to overcome the cutting deformation of the planned material changes,and the cutting force changes accordingly.At a constant grinding speed,there is a linear relationship between the cutting force and the grinding force.Grinding performance affects the amount of heat produced;changing the curvature of the cutting edge of the tool,the maximum effective cutting arc length changes accordingly,and the heat dissipation conditions during cutting also occur Variety.The amount of heat generated and the heat dissipation conditions affect the milling temperature,which in turn affects the degree of tool wear.In this paper,a straight-edged drum milling cutter with a helix angle of 0° is used,And the resistance to overcoming the cutting deformation of the designed material,and the cutting force changes accordingly.With a constant grinding speed,there is a linear relationship between the cutting force and the grinding force.Erosion performance affects the amount of heat generated.Choose 5 sets of bus radius/cutting edge curvature radius,calculate the maximum cutting width,maximum effective cutting arc length and maximum milling area corresponding to the 5 sets of data;use Deform-3D software to perform 5 sets of bus radius/cutting edge curvature for drum milling cutter The resultant milling force F under the radius and the component forces Fx,Fy,Fz in each direction,as well as the milling temperature and tool rake face wear were simulated,and the milling test,Measure the grinding force and tool wear under the same conditions.The results showed that the resulting milling force F and the component forces Fx and Fy increased with the increase in the radius of curvature of the cutting edge.But the size of the increase will decrease.The grinding temperature increases with the increase in the radius of curvature of the cutting edge.but the rate of increase will decrease.Adhesion is visible and many holes appear on the rake surface.and most of the holes are found near the cutting edge at the maximum turning radius of the tool.Tool rake wear increases as the radius of curvature of the cutting edge increases.But the increase is down.