Rotary abrasive flow polishing device for integral impeller type parts

Abstract

A rotary abrasive flow polishing device for integral impeller type parts comprises a feeding system, a spindle system, a device body, a clamp cover, a guide structure and a cleaning system, wherein the feeding system is used for regular bidirectional feeding and controlling abrasive flow, the spindle system is capable of rotating positively and reversely and adjustable in rotation speed, the clamp cover clamps an impeller to form a closed cavity and protects non-polishing sides and upper and lower edges, the guide structure is used for guiding abrasives, and the cleaning system is used for realizing cleanness in ingoing and outgoing. The rotary abrasive flow polishing device solves the problems of easiness in interference, over-polishing of blades, chamfering, dead angles and nonuniform polishing in polishing of integral impeller type parts, the abrasives can bidirectioally cyclically flow to be recovered easily, machining efficiency is improved, and cleanness in ingoing and outgoing during machining can be realized by means of the cleaning system used after polishing is completed.

Description

technical field [0001] The invention relates to a rotary abrasive flow polishing device for integral impeller parts. Background technique [0002] Rotary parts such as integral impellers and blisks in mechanical products such as aero-engines and compressors need to be polished to achieve the low-roughness and smooth surface processing requirements of the blade (cascade) surface after milling or electrolytic machining. At present, enterprises mainly use manual polishing process, which takes a long time to polish a part, and the polishing texture is chaotic and irregular, which results in high labor intensity and serious environmental pollution. The main difficulties in the processing of such parts are: (1) the parts to be processed are mostly complex curved surface structures; (2) the materials to be processed are mostly high-temperature alloys, titanium alloys, stainless steel and other difficult-to-machine materials; (3) the surface roughness of the processing The requirem...

AI Technical Summary

Problems solved by technology

At present, enterprises mainly use manual polishing process. It takes a long time to polish a part, and the polishing texture is chaotic and irregular, which leads to high labor intensity and serious environmental pollution.

The main difficulties in the processing of such parts are: (1) the parts to be processed are mostly complex curved surface structures; (2) the materials to be processed are mostly high-temperature alloys, titanium alloys, stainless steel and other difficult-to-machine materials; (3) the surface roughness of the processing The requirements are high, and the surface roughness after polishing should be below Ra 0.8

[0003] The use of abrasive flow technology to polish the surface of special-shaped inner cavity parts such as pipes is a good process method. However, the current abrasive flow technology mainly uses single-pass polishing for complex parts such as integral impellers, blisks and other rotary parts. Single-out one-way abrasive flow processing method; for the polishing of simple parts, such as pipes, bearing rings, cylinders and other smooth inner wall surfaces, repeated polishing can be achieved, mainly because the parts are simple, the fluid control is convenient, and The fluid can flow through the inner wall surface evenly, but for parts with complex surfaces, the pressure field in the polishing area is not uniform due to the difficulty of controlling the fluid abrasive and the inhomogeneity of the abrasive flow into the flow channel of each blade (cascade). , which in turn leads to uneven processing quality or local over-polishing. For the one-way abrasive flow processing method with one-in and one-out, the abrasive is not easy to recycle, the processing efficiency is low, and the surface of the part after polishing needs to be cleaned.

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