Method for calculating control residual stress processing parameters via parameter inversion

一种残余应力、加工参数的技术，应用在通过参数反演计算调控残余应力加工参数领域，达到改善残余应力分布、操作简便、计算时间短的效果

Active Publication Date: 2017-10-20
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a method for controlling the processing parameters of residual stress through parameter inversion calculation, and calculates the parameters affecting the residual stress through the inversion equation group, so that the residual stress after processing reaches Preset value, thus solving the technical problem of quantitative regulation of residual stress

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  • Method for calculating control residual stress processing parameters via parameter inversion
  • Method for calculating control residual stress processing parameters via parameter inversion
  • Method for calculating control residual stress processing parameters via parameter inversion

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[0035]In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] figure 1 It is a flow chart of a method for adjusting and controlling residual stress processing parameters through parameter inversion calculation constructed according to the preferred embodiment of the present invention, such as figure 1 As shown, the method will be described below with an example of residual stress in orthogonal cutting machining:

[0037] (a) Determine the characteristi...

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Abstract

The invention belongs to the field of processing residual stress, and discloses a method for calculating control residual stress processing parameters via parameter inversion. The method comprises the steps of: (a) acquiring a feature index expressing the residual stress distribution characteristic from a residual stress distribution curve; (b) respectively presetting initial values of the control residual stress processing parameters, calculating the initial value of the feature index, drawing a curve of the feature index along with the change of the processing parameters and obtaining a fitting curve; (c) respectively establishing a relation between respective feature increment of the processing parameters and the fitting curve; and (d) assigning the values and performing inversion calculation to obtain the required processing parameters. The method realizes quantitative control of the processing residual stress, is simple and convenient in operation, reduces the test number, reduces the production cost, improves the processing residual stress distribution of workpieces, and prolongs the anti-fatigue life of parts.

Description

technical field [0001] The invention belongs to the field of machining residual stress, and more particularly, relates to a method for adjusting and controlling residual stress machining parameters through parameter inversion calculation. Background technique [0002] The residual stress distribution of the machined surface layer of the workpiece has a significant impact on the corrosion resistance and fatigue life of the parts. The surface residual tensile stress easily induces the corrosion fatigue crack growth, thereby reducing the service life of the parts; while the surface residual compressive stress is conducive to slowing the corrosion fatigue crack growth. , thereby extending the service life of the parts. When the machining process is the last process, the residual stress distribution of the machined surface layer has a direct impact on the service life of the part, while the distribution of machining residual stress is affected by the machining parameters (includi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06N5/04
CPCG06N5/04G06F30/17G06F2119/18G01L5/0047Y02P90/02G06F2111/10
Inventor 杨文玉黄坤高益邱硕汪涛程广栋杨坤
Owner HUAZHONG UNIV OF SCI & TECH
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