Method for reinforcing cutting edge of micro-cutting tool based on critical cutting thickness

Abstract

The invention relates to a method for reinforcing a cutting edge of a micro-cutting tool based on critical cutting thickness. The method comprises the following steps of dividing a cutting edge area of the micro-cutting tool into a main edge outer edge area, an intermediate transitional area and a near transverse edge area, respectively determining and trimming the respective cutting-edge radii of the main edge outer edge area, the intermediate transitional area and the near transverse edge area according to the critical cutting thicknesses of different processed materials so as to reinforce the strength of the cutting edge and optimize the cutting performance. The method comprises the following steps: (1) determining the critical cutting thickness of a processed material through orthogonal cutting experiment or cutting finite element simulation; (2) dividing the cutting edge area of the micro-cutting tool into the main edge outer edge area, the intermediate transitional area and the near transverse edge area; (3) respectively determining respective cutting edge radii of the three areas according to the critical cutting thickness of the processed material; (4) trimming the cutting edges of the main edge outer edge area, the intermediate transitional area and the near transverse edge area in a micro-scale manner by utilizing a focus ion beam, and gradually trimming the cutting edge to the determined cutting edge radius. The method is feasible, the strength of the cutting edge is improved, the cutting state is improved, the service life of the cutting tool is prolonged, and the method is applicable to all micro-cutting tools.

Description

technical field [0001] The invention relates to a micro-tool for micro-machining, in particular to a micro-tool edge strengthening method based on a critical cutting thickness, and belongs to the technical field of micro-machining. Background technique [0002] Micro-miniature systems are a type of highly integrated optical, mechanical, electrical, hydraulic, magnetic, etc. systems within the micro-scale range. Micro-miniature structural parts are pure mechanical or electromechanical components that connect and support functional components, bear loads, perform motion or output power. One piece parts. Micro-scale structural parts have the following characteristics in terms of object scale, component materials and structural forms: (1) specifically refer to parts and structures whose overall scale is at the millimeter level and the characteristic scale is at the micron level; (2) are mainly composed of metals, alloys, metal-based Made of non-silicon materials such as composi...

AI Technical Summary

Problems solved by technology

In the past, the control of cutting edge radius mainly relied on precision grinding, and segmental grinding could not be realized. In recent years, with the advancement of technology, the method of controlling the cutting edge blunt circle radius has become increasingly mature.

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