商品簡介
The VPA-balanced design of high-productivity drills focuses on matching the geometry of the drill point to a particular work material so that the drill produces minimum axial force and drilling torque, chip flows from the different cutting edges with no interference, and efficient use of metal working fluid flow. Guidelines specify the best material choice for each manufacturing practice and desired property, comparing the advantages and limitations of high speed steels, cemented carbides, and polycrystalline diamond. Technical appendices review drilling force factors, tool materials, and tool geometry. Black and white photographs of drilling equipment and components are provided. Annotation c2014 Ringgold, Inc., Portland, OR (protoview.com)
