FLAT END-MILL TOOL HAVING NEGATIVE RAKE ANGLE AND NEGATIVE GASH RADIAL ANGLE FOR ENHANCED EDGE OF CUTTING TOOL

摘要

The present invention relates to a flat end mill tool. Flat end mill tool of the present invention, form an angle of inclination of the end milnal (flute) to -14 ° ~ -16 °, and to form a gesing wonjugak of mitnal to -9.5 ° ~ -10.5 °. And to be singmyeon the molding and improve tool rigidity to prevent the sharp edges and improve the tool life by preventing a corner of the chipping phenomenon of the cutting edge of the chamfer shape of about 20 ° × 3mm in the cutting blade to come into contact with the cutting blade It can constitute so.