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Titanium alloy blisk side milling cutting parameter optimization method for multiple targets

A cutting parameter, integral blisk technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of low processing efficiency and large surface roughness, and achieve high processing efficiency and small workpiece surface roughness. , the effect of improving correctness and reliability

Inactive Publication Date: 2018-10-30
HARBIN UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of large cutting force and workpiece surface roughness and low processing efficiency in the side milling of titanium alloy blisks, and propose a multi-objective-oriented method for optimizing the cutting parameters of titanium alloy blisk side milling to realize Reasonable selection of cutting parameters

Method used

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  • Titanium alloy blisk side milling cutting parameter optimization method for multiple targets
  • Titanium alloy blisk side milling cutting parameter optimization method for multiple targets
  • Titanium alloy blisk side milling cutting parameter optimization method for multiple targets

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specific Embodiment approach 1

[0030] Specific implementation manner one: such as figure 2 As shown, this embodiment discloses a multi-objective optimizing method for cutting parameters of titanium alloy blisk side milling, and the method steps are as follows:

[0031] Step 1: Determine the reasonable range of cutting parameters;

[0032] The cutting parameter range satisfies the following relationship:

[0033]

[0034] Among them, the cutting parameters include cutting speed v c , Feed per tooth f z , Radial depth of cut a e , Axial depth of cut a p , The unit is m / min, mm / z, mm, mm;

[0035] Step 2: Complete the side milling orthogonal experiment and collect experimental data;

[0036] The specific cutting parameters of the side milling orthogonal experiment satisfy the following relationship:

[0037]

[0038] Step 3: Establish a multi-objective model for side milling cutting parameters optimization;

[0039] The cutting parameter optimization multi-objective model includes a cutting force model, a surface roughn...

specific Embodiment approach 2

[0050] Specific implementation manner two: such as figure 1 As shown, this embodiment is a further description of specific embodiment 1. In step 2, the specific method of the side milling orthogonal experiment is:

[0051] The machine tool 10 adopts a (VDL-1000E) vertical machining center, and the tool adopts a cemented carbide ball-end milling cutter 3 with a diameter of 8mm. The cemented carbide ball-end milling cutter 3 is installed on the tool holder 2, and then the The tool holder 2 is installed on the spindle 1 of the machine tool 10. The material of the workpiece 4 is TC4, the length of the workpiece 4 is 80×80×3mm, and the workpiece 4 is clamped on the (Kistler9257B) dynamometer 6 by the fixture 5 , And install and fix the dynamometer 6 on the machine tool 10, the cutting force test data F x , F y And F z It is amplified by the charge amplifier 7 and input to the computer 9 through the data acquisition system 8, and the surface roughness is measured by the (TR200) ​​rough...

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Abstract

The invention discloses a titanium alloy blisk side milling cutting parameter optimization method for multiple targets, and belongs to the technical field of machining. The method provided by the invention comprises the following steps of 1, determining a reasonable cutting parameter range; 2, completing a side milling orthogonal experiment, and collecting experimental data; 3, building a side milling cutting parameter optimization multi-target model; and 4, solving the multi-target model based on a gamultiobj function of an NSGA-II algorithm, and achieving the optimization of the cutting parameter. According to the method, the cutting parameter is optimized via a genetic algorithm, so that the cutting force and the surface roughness of the workpiece are relatively small, and the machiningefficiency is relatively high. The reasonable selection of the cutting parameter is achieved.

Description

Technical field [0001] The invention relates to a method for optimizing cutting parameters for side milling of titanium alloy integral blisks, and belongs to the technical field of mechanical processing. Background technique [0002] The integral blisk is a new type of structural part designed to meet the requirements of high-performance aero-engines. Compared with the traditional blade and wheel mortise form, the structural weight and the number of parts are reduced, the engine structure is simplified, and the aerodynamic efficiency and thrust-to-weight ratio are improved. The overall performance of the engine has been significantly improved. Although the blisk has many advantages, its manufacturing has brought great challenges to engineers and technicians. On the one hand, due to its poor channel openness, the blade profile is a free-form surface, and the structure is more complicated; on the other hand, its manufacturing materials mostly use high-performance and difficult-to-...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17
Inventor 程耀楠杨金龙秦超左殿阁
Owner HARBIN UNIV OF SCI & TECH
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