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Preparation method of super-hydrophobic bionic numerical control machining tool

A processing tool and super-hydrophobic technology, which is applied in the field of super-hydrophobic bionic CNC machining tool preparation, can solve the problems of time-consuming and labor-intensive tool replacement, reduced tool life, and reduced surface quality of workpieces, etc., to achieve high life and small friction coefficient.

Active Publication Date: 2019-10-22
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This severe friction not only leads to reduced tool life, time-consuming and labor-intensive tool replacement, but also reduces the quality of the machined surface of the workpiece

Method used

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  • Preparation method of super-hydrophobic bionic numerical control machining tool
  • Preparation method of super-hydrophobic bionic numerical control machining tool
  • Preparation method of super-hydrophobic bionic numerical control machining tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: The cutting tool material is SG4 ceramic turning tool (composition is 45% aluminum oxide+55% TiC by weight percentage). First, a two-stage superhydrophobic micromorphology composed of micro-protrusions and micro-grooves is processed at a distance of 150 µm from the main and secondary cutting edges on the rake face and flank face of the tool by nanosecond laser; the processing parameters are: pump voltage 19V, scanning speed 5mm / s, repetition frequency 6Hz, scan 1 time; the corresponding micro-textured protrusion spacing is 40-60µm, and the height is about 40-50µm. Then, the femtosecond laser is used to process the serrated nanotexture at the radius of the tool tip; the processing parameters are: single pulse energy 1.75µJ, scanning speed 500µm / s, scanning once; the corresponding nanotexture spacing is about 300-400nm , the depth is about 100-150nm. Finally, supersonic flame spraying technology is used to prepare the mass percentage of 99% alumina + 1% gra...

Embodiment 2

[0017] Embodiment two: cutter material is hard alloy class cutting tool, as YT15 hard alloy car, milling cutter (composition is weight percent 79%WC+15%TiC+6%Co), YG6 hard alloy car, milling cutter (composition For weight percentage 94%WC +6%Co ) and so on. First, micron-scale pits and arches were prepared on the surface of H13 die steel (4Cr5MoSiV) with a picosecond laser to obtain a 10mm×10mm reverse lotus leaf shape, and this structure was used as a two-stage superhydrophobic micro-morphological processing template; the processing parameters are: Energy density 2.1J / cm 2 , repetition frequency 100kHz, single exposure time 0.5ms, 0.6ms, 0.7ms, repetition times 6-10. Then, using the electrolytic machining method, the reverse lotus leaf structure on the die steel was completely copied on the rake face and flank face of the cemented carbide tool to obtain two 10 mm × 10 mm distances from the main and auxiliary cutting edges of 150-200 µm. Segmented super-hydrophobic microscop...

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Abstract

The invention relates to a preparation method of a super-hydrophobic bionic numerical control machining tool. The preparation method is characterized in that two-section type microstructures formed bymicro-protrusions and micro-grooves are arranged on the front tool surface and the rear tool surface of the tool, a sawtooth-shaped nanostructure is arranged at the position of the corner radius, hard particles are subjected to hypersonic flame spraying, and solid lubricant coatings are coated with the hard particles; the two-section type microstructures formed by the micro-protrusions and the micro-grooves are prepared on the front tool surface and the rear tool surface of the tool through the nanosecond laser machining technology, the contact area between the tool and cuttings is reduced, friction between the tool and the cuttings is relieved, and the hard abrasive particles are stored; meanwhile, in order to enable a tool nose to cut in a workpiece more gently without resistance, the sawtooth-shaped nanostructure with the intervals about 300-400 nm and the depths about 100-150 nm is machined at the position of the corner radius through the femtosecond laser machining technology; and then solid lubricant powder is coated with the hard particles through the hypersonic flame spraying technology, suspension liquid is prepared, the microstructure surface of the tool is coated with the suspension liquid, and the dual effects of superhydrophobicity and friction reduction are achieved.

Description

technical field [0001] The invention belongs to the technical field of mechanical cutting tool manufacturing, and in particular relates to a method for preparing a superhydrophobic bionic numerical control machining tool. Background technique [0002] Metal cutting processing is a key part of the machinery manufacturing industry, and its general trend of development is high-speed, high-efficiency, high-precision, high-flexibility, intelligence and green. The use of cutting fluid in cutting processing plays an important role in improving processing efficiency and improving the surface quality of the workpiece, but the production, use, treatment and discharge of cutting fluid have certain negative effects on the environment and operators; the birth of high-speed dry cutting technology is undoubtedly at the source On the one hand, the problem of negative impact of cutting fluid is solved, and tool performance has a decisive influence on cutting efficiency, precision and surface...

Claims

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Application Information

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IPC IPC(8): B23P15/28
CPCB23P15/28
Inventor 刘长霞孙军龙
Owner LUDONG UNIVERSITY
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