Boring cutter and design method

Abstract

The invention provides a boring cutter and a design method. The boring cutter comprises a damping alloy sleeve, a cutter bar and a sleeve head assembly, wherein force transmission is realized betweenthe damping alloy sleeve and the cutter bar by adopting an interference fit mounting mode, the damping alloy sleeve is mounted on the outermost layer of the cutter bar, and the deformation of the damping alloy sleeve and the cutter bar gradually decreases from the outer side to the central position until zero. The design method of the boring cutter comprises the following steps: acquiring an original three-dimensional design model of the boring cutter, designing the damping alloy sleeve 1, establishing key design parameters including wall thickness T and length L, and determining variable intervals of each parameter; through finite element analysis, with the wall thickness T and the length L as variables, obtaining a bending stiffness matrix [kb] of the boring cutter under the combined variables and a structural damping ratio matrix [zeta] under each stiffness value; and introducing a vibration resistance value parameter theta and determining the optimal design scheme of the boring cutter. The problem that an existing boring cutter is prone to violent vibration in the boring process and consequently a boring machine system is prone to being seriously damaged is solved.

Description

technical field [0001] The invention relates to the technical field of machine tool processing, in particular to a boring tool with a high multiple diameter and a design method thereof. Background technique [0002] Boring cutters are widely used in machine tool processing. They are mainly used to cut the inner circle of the workpiece. The structure mainly includes arbor and cutter head. During the boring process, due to the existence of cutting force, the cutting force acts on the workpiece while , also reacts on the boring tool, which causes the boring tool and the workpiece to vibrate during the boring process, and the more serious situation is that the tool chatters, which will directly cause the boring machine system to produce severe vibration and strong noise, which will affect both the workpiece and the boring tool have a more serious impact. [0003] In order to solve such problems, there are two types of solutions. The first type of solution is to add a dynamic sh...

AI Technical Summary

Problems solved by technology

[0004] The boring tool and design method provided by the present invention solve the problem that the boring tool is prone to severe vibration during the boring process and easily cause serious damage to the boring machine system, significantly reduces the vibration of the boring tool during the boring process, and improves Processing quality

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