Tool holder for grooving cutting blade

Abstract

The invention discloses a tool holder for grooving a cutting blade. The tool holder comprises a tool holder body and a fastener, a clamping portion of the tool holder body consists of an upper clamping portion and a lower supporting portion, an upper positioning surface of the upper clamping portion and a lower positioning surface of the lower supporting portion enclose a blade clamping groove, a rear supporting surface and an elastic extending section are arranged at the rear end of the blade clamping groove, the elastic extending section extends backwards to the neck of the tool holder body, the fastener penetrates through the upper portion and the lower portion of the elastic extending section, M discontinuous upper positioning tables are arranged on the upper positioning surface, and N discontinuous lower positioning tables are arranged on the lower positioning surface, wherein 2<=M<=6, and 2<=N<=6. The tool holder for grooving the cutting blade has the advantages that positioning positions and angles can be automatically adjusted, plastic deformation of the tool body can be effectively suppressed, and the tool holder is stable in structure and long in service life.

Description

technical field [0001] The invention relates to the field of metal cutting, in particular to a tool holder for cutting inserts for groove processing. Background technique [0002] The positioning of the tool holder for cutting inserts for grooving in the up and down direction of the cutter body is realized through the upper and lower positioning surfaces of the cutter body. According to the shape of the positioning surface of the blade, the upper and lower positioning surfaces of the cutter body are generally concave or convex. The cutter body is easy to manufacture and easy to use; at the same time, the upper and lower positioning surfaces are concave, which increases the effective contact area of ​​the cutter body positioning surface, strengthens the ability of the cutter body to bear loads on the side and end faces, and ensures the service life of the cutter body; in addition, the cutter body positioning The large-area contact of the cutting tool can make the positioning ...

AI Technical Summary

Problems solved by technology

The line contact position between the cutter body and the blade is at the middle position and the edge position of the upper and lower concave surfaces. When the line contact is at the middle side of the cutter body, the cutter body will lose the positioning effect of the side direction. When the cutting tool is cutting sideways, the cutter body Unstable clamping will cause rapid wear or fatigue damage of the cutter body; when the line contact is at the edge of the side plane of the cutter body, the edge load on the upper and lower concave surfaces of the cutter body is too large, because the wall thickness between the upper and lower concave surfaces of the cutter body and the side is too small, The shear stress on the upper and lower concave surfaces of the cutter body is too large, which can easily cause plastic deformation of the upper and lower concave surfaces of the blade

When the upper and lower concave surfaces of the cutter body and the protruding parts of the blade play a positioning role, the clamping of the cutter body is unstable, the blade is separated from the cutter body during cutting, and the cutter body replaces the blade to participate in cutting, causing damage to the cutter body and reducing the service life of the tool

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