Saddle-shaped nozzle groove with large thickness and large drop is with complex spatial curved surface,due to its large size,the nozzle hole can only be processed by applying programmed boring machine,but the dimensional accuracy cannot be guaranteed after such processing,the roughness can not be guaranteed because of the large R-angle residue at the root,and processing efficiency is low.According to the above situation,this paper proposes a method for processing large thickness,large drop saddle-shaped nozzle groove,in order to solve the machining problem of large diameter saddle-shaped nozzle groove.
维普
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