Rotary turning blade

Abstract

The invention discloses a rotary turning blade; the upper surface of the blade at a guiding surface formed on a cutting edge is a front blade surface; two adjacent sidewalls transit through the connection of a cylindrical surface; the upper surface, the sidewalls and the cylindrical surface intersect to form the point of a knife; the front blade surface corresponding to a blade tip edge and two side edges are divided into the front blade surface of the blade tip edge and the front blade surfaces of two side edges; the front blade surfaces of two side edges transit toward the front blade surface of the blade tip edge, and the included angle between the front blade surfaces of two side edges and the front blade surface of the blade tip edge grows big gradually, and the width of the edges grows small gradually; a chip breaker groove is set at the center of the top of the blade tip; the chip breaker groove comprises an oval large protruding ball, two oval small protruding balls and a T-shaped boss; the oval large protruding ball and the two oval small protruding balls distribute in a radiation way; the boss is set at one side of the oval small protruding balls far from the blade tip; and the bottom of the chip breaker groove transits in a smooth way. The blade has the blade tip and has the advantages of sharpness and intensity, controllable chip flow and shape. The blade is suitable for fine finishing and semi-finishing etc.

Description

technical field [0001] The invention relates to the field of metal cutting, in particular to an indexable turning insert. Background technique [0002] In the process of metal turning, the same insert is usually not suitable for semi-finishing and finishing at the same time, that is, when it is used for semi-finishing, the chip control is good, but when it is used for finishing, the chips are not controllable. Specifically, the same Turning inserts have good cutting comprehensive performance in semi-finishing, but in finishing, especially in small depth of cut and small feed, the chips are difficult to break and control, and then wrap around the workpiece, tool, and fixture. As the process continues, the accumulated chips will inevitably scratch the processed surface, thereby affecting the surface quality of the workpiece, and even extruding on the tip of the tool or hitting the blade to cause abnormal failure of the blade, especially when processing soft materials, stainles...

AI Technical Summary

Problems solved by technology

[0002] In the process of metal turning, the same insert is usually not suitable for semi-finishing and finishing at the same time, that is, when it is used for semi-finishing, the chip control is good, but when it is used for finishing, the chips are not controllable. Specifically, the same Turning inserts have good cutting comprehensive performance in semi-finishing, but in finishing, especially in small depth of cut and small feed, the chips are difficult to break and control, and then wrap around the workpiece, tool, and fixture. As the process continues, the accumulated chips will inevitably scratch the processed surface, thereby affecting the surface quality of the workpiece, and even extruding on the tip of the tool or hitting the blade to cause abnormal failure of the blade, especially when processing soft materials, stainless steel and other plastic and The above phenomenon is more serious when using materials with better viscosity

Therefore, the versatility of turning inserts has always been a major problem in metal turning.

[0005] Chinese patent document CN103008697A discloses a turning insert, by setting a small bump and a large chip breaker in the shape of a cam that is closely connected to the small bump in the edge angle plane of the blade to meet the requirements of different cutting depths and feed conditions. Chip control, but this structural design still has some shortcomings in processing the outer circle and end face processing to guide the chip

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