Abstract
Aviation bearing bracket is an important part of aircraft and other aviation products. In this paper, based on additive and subtractive hybrid manufacturing technology with high manufacturing flexibility and high machining accuracy, a machining scheme of aviation bearing bracket is designed. First, milling simulation was carried out to obtain the influence law of different cutting parameters on machining deformation, so as to guide the selection of reasonable finish machining parameters in the subsequent process planning. Then, the temperature field distribution of workpiece in the additive manufacturing was simulated, and the influence of different additive manufacturing parameters on the results was analyzed to determine the parameter selection range. Finally, considering the material utilization rate, machining accuracy, machining efficiency and machinability in the machining process of aviation bearing bracket, and proceeding from additive, subtractive and alternating manufacturing methods, the manufacturing process arrangement and process planning for aviation bearing bracket were designed.
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Abbreviations
- ε:
-
Reference strain rate
- T r :
-
Reference temperature
- T m :
-
Material melting point
- A,B,n :
-
Coefficient of material strain strengthening term
- c :
-
Coefficient of material strain rate strengthening term
- m :
-
Coefficient of material thermal softening
- ω :
-
Failure parameter
- \(\overline \varepsilon _0^{pl}\) :
-
Initial value of equivalent plastic strain
- \({\rm{\Delta }}{\overline \varepsilon ^{pl}}\) :
-
Equivalent plastic strain increment
- \(\overline \varepsilon _f^{pl}\) :
-
Failure strain
- T c :
-
Sliding shear stress on contact surface
- µ :
-
Friction coefficient
- σ n :
-
Pressure on the contact surface
- T s :
-
Critical yield pressure of material
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Zhongqi Sheng is an Associated Professor in the College of Mechanical Engineering and Automation at Northeastern University, in China. He completed his Ph.D., Master’s and undergraduate studies at Northeastern University. He mainly works on the hybrid manufacturing, structural optimization and digital transformation.
Yunpeng **e received his B.S. in Mechanical Engineering from Dalian Jiaotong University, Dalian, China. He is currently a Master’s candidate of the College of Mechanical Engineering and Automation at Northeastern University, in Shenyang, China. His research interests include hybrid manufacturing and topology optimization.
Jianbin Tong received his B.S. in Mechanical Engineering from North University of China. He is currently a Master’s candidate in the College of Mechanical Engineering and Automation at Northeastern University, in Shenyang, China. His research interests include additive manufacturing, structural optimization, and specializing in topology optimization.
Yuqiang Fu received his B.S. in Mechanical Engineering from Northeastern University, Shenyang, China. He is currently a Master’s candidate in the College of Mechanical Engineering and Automation at Northeastern University. His research interests include hybrid manufacturing and topology optimization.
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**e, Y., Tong, J., Fu, Y. et al. Machining scheme of aviation bearing bracket based on additive and subtractive hybrid manufacturing. J Mech Sci Technol 34, 3775–3790 (2020). https://doi.org/10.1007/s12206-020-0829-5
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DOI: https://doi.org/10.1007/s12206-020-0829-5