Impeller double-row slotting plunge milling complementary machining method

Abstract

The invention provides an impeller double-row slotting plunge milling complementary machining method, and belongs to the field of machining and tools. The method comprises the following steps: constructing a semi-open type integral impeller model; rough machining is conducted on the impeller runner; a material residual geometric model between two tool paths after double-row slotting plunge milling is established, and a plunge milling complementary machining tool is selected; planning the path of a plunge milling supplementary machining tool, and carrying out plunge milling supplementary machining to remove residual materials after double-row slotting plunge milling machining; according to the material residue condition between tool paths after double-row slotting plunge milling supplementary machining, whether second plunge milling supplementary machining is carried out or not is judged; and tool path information is converted into a machining program, and a machine tool is driven to complete impeller passage double-row slotting plunge milling complementary machining. According to the double-row slotting plunge milling method, an existing double-row slotting plunge milling technology is supplemented and improved, and the machining efficiency can be further improved by about 20%; the method is easy to implement, application of the plunge milling technology in impeller machining is promoted, and remarkable social and economic benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of mechanical processing and tools, in particular, to a method for inserting and milling supplementary double-row slotting of an impeller. Background technique [0002] Centrifugal compressors are widely used in aerospace, petrochemical, natural gas, automobile and other industries, and are a typical core equipment of basic industries. The semi-open impeller is the core component of the centrifugal compressor, and its processing technology will directly affect the processing efficiency and production cost. It has always been a research hotspot and a competitive weapon for scientific research institutes and enterprises. [0003] With the increasing diversification of impeller applications, the requirements for the service life and working efficiency of the impeller are getting higher and higher. Through an original blank, machining represented by CNC machine tools is currently the mainstream method for high-...

AI Technical Summary

Problems solved by technology

The double-row slotting and milling process of the impeller is still in the actual verification stage, and the application effect is better for the impeller flow channel with a large blade curvature. For the impeller flow channel with a small blade curvature, in order to ensure the uniformity of the rough machining allowance of the blade , the tool axis vector changes drastically, and there are too many material residues between the two-row plunging milling tool paths, and the geometric features are complex, which brings great difficulties to the subsequent semi-finishing and seriously restricts the double-row slotting and plunging milling. Processing efficiency advantage

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