Judging of machining feasibility and calculation of midsection for the five-axis milling of shrouded centrifugal impeller

ABSTRACT

Cavities with various geometries are widely used in the aircraft industry, spacecraft industry, ships, petrochemical engineering, and so on. As a typical example of the representative and difficult cavities, shrouded centrifugal impeller has been studied to meet the higher requirements for the high-grade advanced products. For the five-axis milling, geometric modeling parameterized by the double three-cubed Non-Uniform Rational B-Splines form of the shrouded centrifugal impeller was set up as the base of this study. The target machining cavity of the shrouded centrifugal impeller channel was calculated. The methods to judge any point in the midsection exhibiting the projection point on the inlet surface and every point in the midsection showing the projection point on the inlet surface were obtained. Moreover, the method to calculate the final midsection was proposed. For verifying these methods, the simulation of machining of a shrouded centrifugal impeller was finally proposed.

KEYWORDS:

• Cavity
• shrouded centrifugal impeller
• midsection
• milling regionfive-axis milling

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The authors greatly acknowledge the financial support from the Shaanxi Province Natural Science Foundation of China [Grant no. 2019JM-402] and National Key R&D Program of China [Grant no. 2019YFB1504601]

Notes on contributors

Hong-Zhou Fan

Hong-Zhou Fan is a senior engineer in the School of Energy and Power Engineering at Xi’an Jiaotong University. He received his M.S. degrees in School of Electronic and Information Engineering from the Xi’an Jiaotong University, and the Ph.D. degrees in School of Energy and Power Engineering from the Xi’an Jiaotong University. His research activities include Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) in fluid machinery field.

Yan-Long Cao

Yan-Long Cao is a professor in the School of Mechanical Engineering at Zhejiang University. He received his Ph.D. degrees in School of Mechanical Engineering from Zhejiang University. His present research interests include detection & controlling, quality engineering and smart manufacturing.

Guang Xi

Guang Xi is a professor in the School of Energy and Power Engineering at Xi’an Jiaotong University. He received his M.S. degrees and Ph.D. degrees in School of Energy and Power Engineering from the Xi’an Jiaotong Univeristy. His research activities include computational fluid dynamics (CFD), smart optimal design theory, CAD/CAE integrated design and the development of complex software systems in fluid machinery field.