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Ceramic cutting tool cutting parameter optimization method on interrupted cutting conditions

A technology of cutting parameters and ceramic tools, which is applied in the direction of electric digital data processing, special data processing applications, instruments, etc., can solve problems such as difficulty in ensuring high cutting parameter optimization accuracy, achieve high optimization accuracy, improve tool life, and reduce optimization. cost effect

Inactive Publication Date: 2014-09-17
HENAN POLYTECHNIC UNIV
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Problems solved by technology

The existing methods do not consider the microscopic damage state inside the ceramic tool material, and it is difficult to ensure high cutting parameter optimization accuracy

Method used

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  • Ceramic cutting tool cutting parameter optimization method on interrupted cutting conditions
  • Ceramic cutting tool cutting parameter optimization method on interrupted cutting conditions
  • Ceramic cutting tool cutting parameter optimization method on interrupted cutting conditions

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Embodiment Construction

[0033] A method for optimizing cutting parameters of a ceramic tool under interrupted cutting conditions of the present invention comprises the following steps:

[0034] (1), first determine the macroscopic physical performance parameters and microstructural parameters of ceramic cutting tools;

[0035] (2) Determine the initial state value and critical state value of the microscopic damage of ceramic tools through theoretical calculation methods;

[0036] (3) Determine the physical performance parameters of the workpiece material and the parameters of the Johnson-Cook constitutive model;

[0037] (4) Set the geometry of the tool and the workpiece in the finite element simulation software, and import the relevant parameters of the tool material and workpiece material;

[0038] (5) According to the actual processing conditions, the combination of cutting parameters used in the finite element simulation process is determined by the orthogonal experimental design method, and the...

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Abstract

The invention discloses a ceramic cutting tool cutting parameter optimization method on interrupted cutting conditions. The method comprises the steps that parameters of a ceramic cutting tool are determined; the initial state value and the critical state value of microscopic damage to the ceramic cutting tool are determined; parameters of workpiece materials are determined; geometrical shapes of the cutting tool and workpieces are set in finite element simulation software, and all the relevant parameters of cutting tool materials and the workpiece materials are imported; cutting parameter combinations adopted in the finite element simulation process are determined through an orthogonal experimental design method; the maximum damage equivalent stress value is calculated; the cutting parameter combination with the minimum value is selected. According to the ceramic cutting tool cutting parameter optimization method, the influences of the cutting tool microscopic damage state and external loads on invalidation of the cutting tool are considered, and meanwhile the orthogonal experimental design method is adopted, so that the optimization precision of the cutting parameter combinations is higher; the cutting parameter combinations are optimized, and the cutting parameter optimization cost is greatly reduced; the ceramic cutting tool cutting parameter optimization method can be widely applied to optimization of the cutting parameter combinations on the various interrupted cutting conditions, and the purpose of prolonging the service life of the cutting tool is achieved finally.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a method for optimizing cutting parameters of a ceramic tool under interrupted cutting conditions. Background technique [0002] Machining technology has been widely used in metal forming in machinery manufacturing. Interrupted cutting technology such as interrupted turning and face milling is an important branch of cutting technology. Ceramic cutting tools have the characteristics of high hardness, wear resistance, and excellent high-temperature mechanical properties, and have been widely used in interrupted cutting processing technology. Due to the brittleness of ceramic materials, under intermittent cutting conditions, high cutting temperature and strong thermal and mechanical shocks make the tool prone to fracture and even failure, and have adverse effects on the quality of the machined surface. Therefore, in order to improve the life of existin...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 崔晓斌郭景霞闫艳燕郭强
Owner HENAN POLYTECHNIC UNIV
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