A replaceable single cutting blade fine milling ball head cutter

Abstract

The invention discloses a finish-milling ball-end cutter with a replaceable single cutting blade. The finish-milling ball-end cutter comprises a cutter body, a ball head blade and a fastening screw, the ball head blade is provided with a ball head edge, a central mounting hole, an upper positioning end surface, a lower positioning end surface, a first convex arc positioning side surface and a second convex arc positioning side surface; the first and second convex arc positioning side surfaces are positioned at the rear end of the ball head edge, and the first and second convex arc positioningside surfaces are not concentric, the central mounting hole penetrates through the upper positioning end surface and the lower positioning end surface, and the cutter body is provided with a cutter groove and a fastening hole. The cutter groove is provided with an upper clamping surface, a lower clamping surface, the first concave arc positioning side surface and the second concave arc positioningside surface, the ball head blade is installed in the cutter groove, the upper clamping surface is attached to the upper positioning end surface, the lower positioning end surface is attached to thelower clamping surface, the first convex arc surface is attached to the first concave arc surface, the second convex arc surface is attached to the second concave arc surface, and the fastening screwpenetrates through the central mounting hole to be in threaded fit with the fastening hole. The finish-milling ball-end cutter with the replaceable single cutting blade has the advantages that the radial displacement and rotation of the blade are limited, and the radial positioning precision and the axial positioning precision are guaranteed.

Description

technical field [0001] The invention relates to cutting processing, in particular to a precision milling ball head cutter with replaceable single cutting blade. Background technique [0002] When machining a workpiece, it is necessary to select the best cutting tool according to the type of machining and the material of the workpiece. For example, when machining the arc-shaped surface of the blade, use a cutting blade whose cutting edge is arc-shaped. When machining a flat surface, a cutting insert with a straight cutting edge is used. The replaceable single-blade fine-milling ball-end cutter is widely used in the mold and automotive industry processing markets. With the development of materials and processes, the accuracy, stability and life of the replaceable single-cutting-blade fine-milling ball-end cutter have been raised. Higher requirements, while the previous replaceable single-blade finish milling ball nose cutter did not involve radial and axial positioning accura...

AI Technical Summary

Problems solved by technology

[0003] Most of the existing replaceable single-blade ball end milling cutters use V-shaped or straight-face positioning, and the positioning accuracy is not high. However, to achieve high positioning accuracy, it is necessary to grind the center hole of the blade and the outer surface of the screw, and increase the grinding of the blade. It is difficult to cut and increase the cost, and the V-shaped groove processing of the tool is also troublesome

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