Interference analysis and simulation of abrasive belt grinding and polishing of blisk

Lei Zhang,Chen Ding,Cheng Fan,Qian Wang,Qiang Yuan,Kejun Wang

doi:10.1177/1687814020984394

Lei Zhang, Chen Ding + Show 4 more

Open Access

https://doi.org/10.1177/1687814020984394

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Abstract

Blisk is a difficult processing part with complex structure. The polishing quality and accuracy of the blade surface will significantly affect its performance and life. A new abrasive belt system is developed to grind and polish the blade on the blisk. In view of the problem that the abrasive belt is easy to interfere with the adjacent blades in the grinding and polishing process, an algorithm for judging the critical interference state is proposed based on the structural characteristics of the abrasive belt tool system and the actual grinding and polishing process of the blades. On the basis of above, a new algorithm is developed to calculate the range of interference-free wrap angle of the abrasive belt tool system. This paper established a simulation model based on VERICUT software and simulated the process of the blisk polishing. The simulation and experiment results verifies the effectiveness of the algorithm.

Highlights

As the core part of the aircraft and the source power to promote the development of aerospace industry, the aerospace engine has a direct impact on the performance of the aircraft
The blisk is composed of the blade and the wheel disc, which reduces the weight by about 50% and avoids the loss of airflow in the gap of the connecting parts
A new abrasive belt tool and a new type of seven-five axis CNC machine tool is developed for the grinding and polishing of the blisk

Summary

Introduction

As the core part of the aircraft and the source power to promote the development of aerospace industry, the aerospace engine has a direct impact on the performance of the aircraft. This paper proposed a new algorithm to calculated the range of the interference-free angle of the abrasive belt in the contact wheel. Due to the close distance between adjacent blades, the abrasive belt may interfere with blades during polishing process, it is necessary to determine the range of the interference-free wrap angle for two contact wheels.

Results

Conclusion