Microstructure keyway broach for surfaces of bionic dung beetle elytra, and preparation method thereof

Abstract

The invention discloses a microstructure keyway broach for the surfaces of bionic dung beetle elytra, and a preparation method thereof. Serious extrusion, friction and wear exist in rake faces and chips in a broaching process of an existing broach. According to the microstructure keyway broach for the surfaces of the bionic dung beetle elytra, and the preparation method thereof, microstructures onthe surfaces of the dung beetle elytra are obtained through scanning, then a single-point diamond tool is produced, and m rows*n columns of bionic microstructures are formed on the rake face of eachbroach tooth in a rough broaching area and a semi-finish broaching area of the broach separately, each bionic microstructure is composed of a central inverted-cone-frustum concave pit and a pluralityof boundary inverted-cone-frustum concave pits which are uniformly distributed in the circumferential direction of the central inverted-cone-frustum concave pit, and the sidewalls of all the boundaryinverted-cone-frustum concave pits communicate with the sidewall of the central inverted-cone-frustum concave pit; and the centers of the top surfaces of all the boundary inverted-cone-frustum concavepits are located in the circumference where the edge of the top surface of the central inverted-cone-frustum concave pit is located. According to the microstructure keyway broach for the surfaces ofthe bionic dung beetle elytra, and the preparation method thereof, the bionic microstructures are formed on the rake faces of the broach, so that the cutting performance of the broach can be optimized, the cutting load is reduced, and the purposes of protecting the broach, reducing the wear of the broach, and prolonging the service life of the broach are achieved.

Description

technical field [0001] The invention belongs to the technical field of tool surfaces, in particular to a bionic microstructure keyway broach imitating the surface of a dung beetle elytra and a preparation method thereof. Background technique [0002] Broaching is a form of machining operations, and broaching is a key component of broaching. During broaching, the broaching makes the surface to be machined in one cut. The broaching machine has only the main motion, and no feed motion. Broaching is widely used in the machining of key parts such as automobiles and aerospace because of its smooth cutting motion and high machining accuracy. However, at this stage, when the broach is used for broaching, there are generally problems such as large broaching load, the cutter teeth are easily bumped or even crushed by the workpiece and chips, and the tool tip is prone to build-up edge, which affects the machining accuracy. How to solve the above problems has become the key to promoti...

AI Technical Summary

Problems solved by technology

However, in this invention, the microstructure is placed on the flank of the broach, and the part that affects the broaching load most seriously in the broaching process appears on the rake face of the broach. Therefore, it is not optimal to set up the microstructure on the back of the broach effect, unable to play the best beneficial effect of microstructure on broaching performance

And the bionic effects of other organisms need to be further developed

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