A self-adaptive auxiliary fixture for deformation control in blade machining

The aero-engine blades are mostly thin-walled with complex structures, which are prone to flutter, deformation during processing. All these characteristics make it difficult to machine the blade qualified. In order to improve the precision and efficiency of blades machining, a self-adaptive clamp machining process method is proposed in this paper. Then a self-adaptive auxiliary fixture of low-melting-point alloy which have simple structures is firstly designed based on the self-adaptive clamp method. The blade machining experiments of the low-melting-point alloy auxiliary fixture are carried out. And the experimental results show that the self-adaptive clamp method can improve both precision and efficiency in blade machining. But the low-melting-point alloy auxiliary fixture is still cumbersome and danger to the operators. Therefore, through analyzing the deformation in blade machining, an improved self-adaptive auxiliary fixture which is safe, efficient, and easy operated is re-designed.