文档介绍：A 22 B C D E F G A H A 23 A 32 A 39 A 42 A 48 Parting and grooving Threading Milling Drilling Boring Tool holding Turning Machinability Other inf ormation Choice of inserts ? Basic factors ? Insert geometries ? Insert grades ? Insert shape, size, nose radius ? Cutting data effect on tool life Choice of inserts A 23 B C D E F G A H Parting and grooving Threading Milling Drilling Boring Tool holding Turning Machinability Other inf ormation plex world of metal cutting The machining starts at the cutting edge Getting metal cutting processes right means knowing the workpiece material, then choosing the correct insert geometry and grade to suit the specific application. ? The interaction between an optimized insert geometry and grade for a certain workpiece mate- rial is the key to ess- ful machining. ? These three main basic factors must be carefully considered and adapted for the machining opera- tion in question. ? The knowledge and un - derstanding how to play with these factors is of vital importance. Typical chip breaking sequences with high speed imaging. Choice of inserts – basic factors Workpiece material Grade Geometry A 24 B C D E F G A H M P ? Parting and grooving Threading Milling Drilling Boring Tool holding Turning Machinability Other inf ormation Six material groups In the metal cutting industry there is a numeros amount ponent designs made from different materials. Each mate- rial has its own unique characteristics influenced by the alloying elements, heat treatment, hardness etc. This strongly influence the choice of cutting tool geometry, grade and cutting data. Therefore workpiece materials have been divided into 6 major groups in accordance with the ISO-standard, where each group has unique properties regard- ing machinability. ? ISO P – Steel is the largest material group in the metal cutting area, ranging from unalloyed to high-alloyed mate- rial including steel castings and ferritic and martensitic stainle