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RISS 인기검색어
- 검색키워드
- 저자 : Wenbo Huai (검색결과 2 건)
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Wenbo Huai,Yaoyao Shi,Hong Tang,Xiaojun Lin 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.7
As for blisk blade profile polishing, the “five-axis numerical control + flexible grinding head + elastic grinding tool” polishing process equipment has advantages of high precision, little interference, good adaptivity, etc.; in order that the elastic grinding tool (abrasive cloth wheel) can effectively fit in with the blade profile in the polishing process and polishing quality and efficiency can be improved, a polishing path programming method of the elastic grinding tool was studied, feed mode of the elastic grinding tool and parametric method of the blade profile were proposed, and calculation methods of offset surface, polishing spacing, polishing step size and cutter-axis vector were given; this polishing path programming method makes it possible for the flexible spindle mechanism keeps a reasonable pose during the polishing process so that the elastic grinding tool can not only effectively fit in with the blade profile but also the polishing force direction of the elastic grinding tool is basically identical with normal vector direction of the polishing point; the polishing test results indicate that: After polishing, blade surface roughness is smaller than 0.4 µm and blade profile tolerance is within the tolerance zone, thus satisfying technical requirements and indicating that the technology proposed in this paper can satisfy blisk blade profile polishing requirements.
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Wenbo Huai,Yaoyao Shi,Hong Tang,Xiaojun Lin 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.2
High-speed rotating abrasive cloth wheel is a highly flexible material that can be used to polish aviation engine blades. In this study, sensitivity and relative sensitivity to processing parameters were described on the basis of an empirical model of surface roughness to control the polishing of rough surfaces with abrasive cloth wheels. A mathematical model of the sensitivity and relative sensitivity of surface roughness to processing parameters was also established on the basis of an orthogonal test of polishing TC4 blade workpieces by utilizing abrasive cloth wheels. The sensitivity of the analytical method for processing parameter interval was examined, and the division principle and approach for the stable and unstable ranges of processing parameters were proposed. The influence curve of polishing parameters on surface roughness was obtained by combining the analyzed ranges in the orthogonal test. The optimization of processing parameter interval was also presented to identify the optimal intervals of surface-roughness-oriented polishing parameters of abrasive cloth wheels. The polishing test based on an aviation engine blade confirmed that the optimal intervals of the parameters were reliable. This research provides a basis for theoretical studies and tests to evaluate blade polishing technique with abrasive cloth wheels and surface roughness control.
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