Milling multi-objective optimization decision-making method introducing three-dimensional stability constraint

A multi-objective optimization and milling processing technology, applied in the field of mechanical processing technology, can solve problems such as cumbersome operations, large limitations, and inaccurate predictions

Active Publication Date: 2019-08-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0007] Purpose of the invention: In order to solve the problems in the above-mentioned prior art, such as insufficient consideration of constraint conditions, large limitations, inaccurate prediction, cumbersome operation, etc., the present invention provides a multi-objective optimization decision-making method for milling processing that introduces three-dimensional stability constraints

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  • Milling multi-objective optimization decision-making method introducing three-dimensional stability constraint
  • Milling multi-objective optimization decision-making method introducing three-dimensional stability constraint
  • Milling multi-objective optimization decision-making method introducing three-dimensional stability constraint

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[0117] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0118] This embodiment provides a milling multi-objective optimization decision-making method that introduces three-dimensional stability constraints, including the following steps

[0119] Step 1: Identify and acquire the modal parameters of the milling system through the hammer excitation method;

[0120] Step 2: and use the modal parameters and the second-order full discrete method to construct a milling three-dimensional stability model about the spindle speed Ω, the axial depth of cut d and the radial depth of cut a;

[0121] Step 3: According to the milling process of the CNC machine tool, the objective function of the milling process parameter optimizat...

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Abstract

The invention discloses a milling multi-objective optimization decision-making method introducing three-dimensional stability constraint. The method comprises the following steps: constructing a three-dimensional stability model about the rotating speed, the axial cutting depth and the radial cutting depth of a milling main shaft; establishing a milling parameter optimization model which takes high efficiency, low cost and high profit as objective functions and takes machine tool performance, cutter performance, workpiece performance, stability requirements and machining requirements as constraint conditions; and solving the milling parameter optimization model by using a multi-objective firefly optimization algorithm based on a clustering principle to obtain a plurality of groups of optimal process parameters. The invention provides a more reasonable optimization decision-making method for multi-objective optimization of the milling process parameters, and provides an effective and practical technology for optimization selection of the multi-feed high-speed milling process parameters.

Description

technical field [0001] The invention belongs to the field of mechanical processing technology, and in particular relates to a multi-objective optimization decision-making method for milling processing which introduces three-dimensional stability constraints. Background technique [0002] Numerical control technology is the core technology in the modern advanced manufacturing equipment industry. The reasonable selection of its cutting parameters has greatly affected the processing efficiency, processing quality and processing cost. Therefore, scholars at home and abroad have conducted a lot of research on the optimization of milling process parameters. [0003] Domestically, the invention patent with the publication number CN201410487219.9 discloses a cutting parameter optimization method for machining energy efficiency. This method does not optimize the radial depth of cut, and does not consider the influence of milling chatter stability constraints. Therefore, the method use...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06N3/00
CPCG06N3/006G06F30/20G06F30/17
Inventor 杨文安蔡旭林黄超郭栋琨杨博郭宇廖文和
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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