| 摘要 |
FIELD: process engineering. ^ SUBSTANCE: proposed reamer comprises even number of cutter blades, equal to four or more. Note here that said cutter blades are arranged on peripheral part of reamer head and spaced regularly. Note here that cutter blades facing each other are made from different materials. One of blades in pair can be made from hard alloy, while the other cutter blade in pair can be made from one material selected from the group of sintered ceramic material, cermet and microcrystalline diamond sintered material. Besides one cutter blade can be made from cermet while the other one can be made from material selected from the group of sintered ceramic material, and microcrystalline diamond sintered material. ^ EFFECT: higher quality of machining and longer life. ^ 3 cl, 2 dwg, 1 tbl |
