Research on machining technology of high speed and ultra-thin wall parts
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DOI 10.1007/s12206-020-1020-8
Journal of Mechanical Science and Technology 34 (11) 2020 Original Article DOI 10.1007/s12206-020-1020-8 Keywords: · Thin-walled parts · Processing technology · Melting point aluminum alloy · Rigidity · Roughness
Correspondence to: Yaolong Chen [email protected]
Citation: Hu, L., Li, Y., Chen, Y. (2020). Research on machining technology of high speed and ultra-thin wall parts. Journal of Mechanical Science and Technology 34 (11) (2020) 4621~4629. http://doi.org/10.1007/s12206-020-1020-8
Received April 24th, 2020 Revised
Research on machining technology of high speed and ultra-thin wall parts Lai Hu, Yipeng Li and Yaolong Chen School of Mechanical Engineering, Xi’an Jiaotong University, 28 Xianning Road, Xi’an, Shaanxi 710049, China
Abstract
This paper mainly analyzes and experiments the processing technology of high speed (12000 r/min) and large proportion thin-wall parts (thickness/width = 1:80 and thickness/height = 1:120), so as to guide the machining of closed centrifugal impellers in aerospace. In this process, low melting point alloy is selected as the filling material to increase the rigidity of thin-walled parts and improve the indicated roughness of parts. Different low melting point alloy filling structures are carried out on large proportion of thin-wall sample parts. In addition, an auxiliary angle R is added at the stress concentration of the part itself to reduce the vibration caused by the machining path. For the results of simulation and test, the parts without filling low melting point alloy can not be processed and used at all, while the "tower" filling structure has fine cracks at the top of the thin-walled parts. The "column" filling structure increases the rigidity by about 19.97 % and the roughness by about 50 %.
July 28th, 2020
Accepted August 27th, 2020 † Recommended by Editor Chongdu Cho
© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2020
1. Introduction With the upgrading of important parts in aerospace, thin-walled or even ultra-thin wall parts are needed in many occasions to meeting the requirements [1]. As we all know, the processing of thin-walled parts has always been one of the difficulties in the processing industry. What's more, many large proportion of thin-walled parts have become a greater challenge [2]. This challenge lies in the analysis of processing technology for ultra-thin wall parts. Many authors had studied the processing of thin-walled parts and other related aspects. Typically, Jiang et al. [3] proposed a five-axis numerical control tool path optimization based on Mastercam numerical control programming software. The control variable method is used to optimize the processing parameters. The optimal cutting force and thickness are determined on the premise of ensuring the machining quality, so that the machining efficiency and quality are improved. Shan et al. [4] studied the influence of cutter inclination angle on the elastic deformation of thin-walled parts in mul
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