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Optimization method of cooling lubrication process parameters in micro-lubrication cutting processing

A technology of process parameter optimization and cooling and lubrication, which is applied in the directions of multi-objective optimization, design optimization/simulation, electrical digital data processing, etc., can solve the problem of lack of systematic experimental research on MQL cutting technology and the lack of cooling and lubrication effect of MQL cutting Evaluation and other issues to achieve the effect of improving processing quality, improving cooling and lubrication effect, and improving cutting efficiency

Active Publication Date: 2018-07-13
BEIHANG UNIV
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Problems solved by technology

[0003] The existing research results show that the minimal quantity lubrication cutting technology has excellent effects in the cutting of some difficult-to-machine materials. However, there are still some key issues in the research of this technology that need to be further resolved, mainly including: (1) minimum quantity lubrication The cooling and lubrication effect of cutting on the cutting zone has an important impact on the cutting performance of the processed material, but there is still a lack of evaluation of the cooling and lubrication effect of MQL cutting; (2) There is still a lack of systematic experiments on MQL cutting technology Research, it is difficult to provide optimized working parameters and application process data for MQL cutting for different processed materials

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[0106] In order to verify the present invention, the cooling and lubricating process parameters are optimized and calculated by experiments when the minimum quantity lubrication cutting process is carried out, the experimental processing technology is turning, the machine tool is CA6140, and the sample material is Ti6A14V (TC4), diameter d=150mm, total length l=150mm, The specific experimental parameters and the selection of micro-lubrication parameters are shown in Table 1. The tool is a TiCN-coated WC-based carbide turning tool with a coating thickness of 3-4 μm. The geometric parameters are shown in Table 2. The tool has an internal passage. The liquid method, the gas medium is compressed air, and the lubricating liquid used is MIRCOL-UBE1000-20 type vegetable oil, an environmentally friendly lubricating oil from Anmolin Company. The nozzle is located on the rake face of the tool, and has an included angle of 45° with the direction of the machine tool spindle.

[0107] Table...

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Abstract

The invention discloses an optimization method of cooling lubrication process parameters in micro-lubrication cutting processing. The method mainly comprises the steps of establishing a cooling lubrication process parameter optimization objective function according to the characteristics of the micro-lubrication cutting processing, establishing optimization variables and constraint conditions in aparameter optimization model according to the optimization objective function, taking an optimization goal that a condition that cooling lubrication effect factors obtain optimized values is ensured,providing an optimal setting method of the cooling lubrication process parameters in the micro-lubrication cutting processing, and obtaining optimal parameter combination through an optimization algorithm; the method effectively improves the cooling lubrication effects, improves the cutting efficiency, reduces the cutting force of a knife, evenly reduces the temperature of a processing area, theknife and a workpiece, effectively suppresses the ware of the knife, improves the knife durability and improves the processing quality of a processed surface.

Description

technical field [0001] This patent relates to the field of new green numerical control cutting processing, in particular to a method for optimizing cooling and lubrication process parameters during cutting with minimal lubrication. Background technique [0002] Minimal Quantity Lubrication (MQL) technology is to mix and vaporize compressed gas and a very small amount of lubricating liquid and then spray it into the processing area to effectively lubricate the processing part between the tool and the workpiece, which can greatly reduce the tool-workpiece and tool-chip The friction between them plays a role in inhibiting temperature rise, reducing tool wear, preventing adhesion and improving the processing quality of workpieces. The lubricating liquid used is very small but the effect is very remarkable, which not only improves the work efficiency, but also does not cause pollution to the environment. The amount of lubricating fluid used in the micro-lubrication method is ver...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/20G06F2111/04G06F2111/06
Inventor 张以都宋和川吴琼
Owner BEIHANG UNIV
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