A Cubic Boron Nitride Tool with Ceramic Binder Suitable for Machining Superalloys

Abstract

The invention relates to a ceramic binder cubic boron nitride cutter suitable for processing high temperature alloy. The ceramic binder cubic boron nitride cutter comprises a knife bar, a knife matrix, a cubic boron nitride knife head, an upper pressing plate and a lower pressing plate, wherein a mounting area is arranged on one side of the left end of the knife bar; a fixing groove is formed in the center of the bottom surface of the mounting area in the longitudinal direction; the upper pressing plate is detachably connected with the right side above the mounting area; a bulge matched with the fixing groove is arranged in the center of the lower surface of the knife matrix in the longitudinal direction; a T-shaped groove is formed in the middle of the outer end face of the cutter matrix;the depth of the horizontal section of the T-shaped groove is greater than that of the vertical section; the vertical section of the T-shaped groove penetrates through the lower part of the knife matrix; the lower pressing plate is arranged in the T-shaped groove and is matched with the T-shaped groove; a threaded column is arranged below the lower pressing plate; and the threaded column penetrates through the knife bar to fix the knife matrix and the knife bar. The ceramic binder cubic boron nitride cutter has stable performance under the cutting high temperature state, and is excellent in high temperature red hardness and suitable for cutting difficult-to-machine material including high temperature alloy.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a ceramic binder cubic boron nitride cutting tool suitable for processing high-temperature alloys. Background technique [0002] At present, wear-resistant materials, composite materials and difficult-to-machine alloys are widely used, and the processing characteristics of these materials make ordinary knives difficult to do. Ceramic knives are currently recognized as the best performing knives. Modern ceramic knives can be divided into three categories, namely : ① oxide ceramics, ② mixed ceramics, ③ non-oxide ceramics. Among the three types of tools, the best performance is cubic boron nitride ceramics in non-oxide ceramics. The traditional cubic boron nitride tool polycrystalline binder is currently mostly a metal binder based on aluminum and cobalt, which has more than enough toughness. However, the high temperature resistance is insufficient. Due to the poor cutting performance...

AI Technical Summary

Problems solved by technology

Some of the existing grooving knives are fixed by changing the upper surface structure of the knife base and using a pressure plate, some are fixed by bolts and screws, and some are fixed by the grooving tool holder. When the alloy is used for grooving, it is still prone to cutting vibration, causing wear and deformation of the tool

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