Milling cutter

Abstract

The present invention discloses a milling cutter, which comprises a disk-like cutter body, cutting blades and cutter grooves arranged on the outer edge of the disk-like cutter body, wherein the cutter groove comprises a cutting blade clamping groove and a pressing block installation groove, the bottom surface and the top surface of the cutting blade respectively bear against the first clamping surface and the second clamping surface of the cutting blade clamping groove, the radially-extending surfaces of the bottom surface and the top surface toward the external of the disk-like cutter body intersect so as to form an included angle alpha, the radially-extending surfaces of the first clamping surface and the second clamping surface toward the external of the disk-like cutter body intersect so as to form an included angle alpha', the alpha' is more than or equal to the alpha, and pressing blocks for radially and tightly pressing the cutting blades are arranged inside the pressing block installation grooves. The milling cutter has advantages of safety, reliability, accurate assembly positioning, high cutting efficiency and the like.

Description

technical field [0001] The present invention relates to cutting tools, in particular to a milling tool. Background technique [0002] The rotary slot milling cutter is equipped with an indexable insert, which must be fixed on the disc body of the milling cutter during use. In the prior art, the insert is usually radially pressed inward from the periphery of the cutter body by a self-compressing method. , the blade is axially loaded into the opening of the disc body or taken out. The radial component force direction of the cutter body’s pressing force on the blade is consistent with the centrifugal force direction when the cutter rotates. When the resultant force of the radial component force and centrifugal force is greater than the blade’s When there is too much friction, the blade will be thrown out, causing safety and quality accidents, thus limiting the speed and cutting efficiency of the tool. At the same time, the assembly and positioning of the blade when it is loaded...

AI Technical Summary

Problems solved by technology

[0002] The rotary slot milling cutter is equipped with an indexable insert, which must be fixed on the disc body of the milling cutter during use. In the prior art, the insert is usually radially pressed inward from the periphery of the cutter body by a self-compressing method. , the blade is axially loaded into the opening of the disc body or taken out. The radial component force direction of the cutter body’s pressing force on the blade is consistent with the centrifugal force direction when the cutter rotates. When the resultant force of the radial component force and centrifugal force is greater than the blade’s When the friction force is high, the blade will be thrown out, causing safety and quality accidents, thus limiting the speed and cutting efficiency of the tool. At the same time, the assembly and positioning of the blade when it is loaded into the disc body is not accurate, which affects the accuracy of the tool.

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