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Acceleration monitoring based roughness prediction method for side milling surface of thin-walled workpiece

A technology for surface roughness and thin-walled parts processing, which is applied in the field of surface roughness prediction for side milling of thin-walled parts based on monitoring acceleration, can solve problems such as poor practicability, and achieve low cost, simple method, small quality and volume Effect

Active Publication Date: 2019-12-20
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the shortcomings of the poor practicability of the existing methods for predicting the surface roughness of side milling of thin-walled parts, the present invention provides a method for predicting the surface roughness of side milling of thin-walled parts based on monitoring acceleration

Method used

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  • Acceleration monitoring based roughness prediction method for side milling surface of thin-walled workpiece
  • Acceleration monitoring based roughness prediction method for side milling surface of thin-walled workpiece
  • Acceleration monitoring based roughness prediction method for side milling surface of thin-walled workpiece

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Embodiment Construction

[0037] refer to Figure 1-4 . The specific steps of the surface roughness prediction method for side milling of thin-walled parts based on the monitoring acceleration of the present invention are as follows:

[0038] Step 1. Determine whether the processing method of the thin-walled part is side milling. If it is side milling, proceed to the second step; otherwise, this method is not applicable. This experiment uses side milling, so the second step can be performed.

[0039] Step 2. Install the thin-walled part 6 on the fixture 7 of the machine tool table 5. The thin-walled part 6 used in this experiment is a titanium alloy with a size of 100mm×100mm×8mm and an aspect ratio of 12.5, which meets the requirement of the aspect ratio.

[0040] Step 3, the installation of the acceleration sensor 2 and the debugging of the acquisition equipment.

[0041]The acceleration sensor 2 is installed on the other side of the thin-walled part 6 to be processed in an axisymmetric position, ...

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Abstract

The invention discloses an acceleration monitoring based roughness prediction method for the side milling surface of a thin-walled workpiece, and aims at solving the technical problem of low practicability of an existing roughness prediction method. According to the technical scheme, an acceleration sensor is used during side milling; an acceleration signal during milling of the thin-walled workpiece is obtained through monitoring; a correction coefficients is adopted to calculated the vibration acceleration in the whole side milling process, a the surface contour height change curve of a processed area of the thin-walled workpiece is measured offline, the surface roughness Ra value of the machined area is obtained by calculation, a surface roughness and acceleration coupling prediction model is established, and the surface roughness in the machining process is predicted. According to the method, influence of vibration under the same group of machining parameters on the surface appearance is considered, the method is simple, the data size is small, the prediction accuracy is high, and therefore the practicability is good.

Description

technical field [0001] The invention relates to a method for predicting surface roughness of side milling of thin-walled parts, in particular to a method for predicting surface roughness of side milling of thin-walled parts based on monitoring acceleration. Background technique [0002] With the development of the machinery industry, people put forward higher and higher requirements for the performance of the machine, which makes the parts need to have higher quality in the process of processing, and more importantly, the quality of the processed surface is good Bad, which directly affects the service life of the parts. For example, in some high-temperature, high-pressure and high-frequency alternating load environments, the quality of the processed surface directly determines the service life of the part. Good processing quality can not only improve the service life and processing efficiency of the machine, but also play a decisive role in the forming accuracy of parts. T...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 张定华姚泽全罗明梅嘉炜樊畅郑志阳
Owner NORTHWESTERN POLYTECHNICAL UNIV
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