Indexable milling cutter blade and milling cutter

Abstract

The invention discloses an indexable milling cutter blade and a milling cutter. A cutter blade body is in the shape of a cone and comprises an upper surface, a lower surface and a side surface connecting the upper surface with the lower surface. The geometric center of the cutter blade body is provided with a cutter blade positioning hole. The side surface comprises a rear cutter surface near the upper surface, and a positioning surface near the lower surface; a groove is arranged between the positioning surface and the rear cutter surface; the positioning surface is provided with a plurality of positioning tables which are distributed uniformly; each positioning table comprises a positioning plane protruding outwards from the side surface, and a transition surface for connecting the groove with the positioning plane; each positioning plane extends to the lower surface from the transition surface; and the lower surface 2 is a cutter blade installation reference plane. Each protruding positioning plane clings to a positioning side surface of a cutter groove to restrict the radial rotation of the blade, then the rear cutter surface of the blade clings to the positioning side surface of the cutter groove, therefore the blade is positioned correctly and prevented from rotating and sliding under the actions of cutting force and friction force in processing.

Description

technical field [0001] The invention relates to a metal cutting blade and a cutting tool, in particular to an indexable circular milling blade and a milling tool capable of realizing accurate positioning. Background technique [0002] Indexable circular milling inserts and milling tools are commonly used metal cutting tools. During the processing and use of circular milling inserts, only a part of the cutting edge of the cutting insert participates in cutting. In this process, the cutting edge of the cutting workpiece The length will vary with the depth of cut. When the cutting edge involved in cutting wears to a predetermined level, a new cutting edge needs to be rotated to the processing position. Therefore, the rotation positioning of the indexable circular milling insert is required to be fast and simple. The positioning structure of the circular milling blade in the prior art is generally to lock the circular milling blade in the groove by passing the screw through the...

AI Technical Summary

Problems solved by technology

Chinese patent CN1018111203A discloses a circular milling insert. The circular milling insert disclosed in the above-mentioned patent is for effective positioning. In addition to the positioning surface obtained by cutting the lower section of the conical surface, the upper surface is also provided with a number and The grooves equal to the cutting unit are used for the turning and positioning of the blades to ensure the positioning effect. In actual processing, the pressing device needs to cooperate with the grooves, which will lead to insufficient chip space in semi-finishing and rough machining, affecting Cutting performance, and complex structure, high manufacturing cost

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