Processing method for improving flow precision of oil injecting ring

Abstract

The present invention discloses a processing method for improving the flow precision of an oil injecting ring. Drilling and reaming processes are adopted for forming oil injecting holes and oil feeding holes of an oil path, a single-oil-path flow process test is performed, and the diameter phi 1 of one oil feeding hole and the diameters phi 2 and phi 3 of two oil injecting holes, which meet the median flow requirements under the processing precision level of the reaming process are determined; then the oil feeding holes and the oil injecting holes are formed according to the drilling and reaming processes, after all the oil feeding holes and oil injecting holes are formed, the oil path test is performed, a reamer is adopted for polishing the oil injecting holes when the flow test is not qualified, the smaller feeding amount is adopted in polishing, and the whole oil path of the oil injecting holes is completely polished, so that polishing of only the oil path near oil discharging holesof the oil injecting holes is avoided; the better inner hole surface roughness and the smaller geometric tolerance in the oil path are improved, the flow test frequency is greatly reduced, and the problem of part scrapping caused by flow out-of-tolerance is eliminated; and on-time on-demand delivery of the oil injecting ring is ensured.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a processing method for improving the flow precision of an oil injection ring. Background technique [0002] The bearings of gas turbines and aero-engines work at high speeds, and good lubrication is required to ensure the normal operation of gas turbines and aero-engines. The oil injection ring is the part that provides lubricating oil for the bearings when they rotate at high speed. The oil flow accuracy of the oil injection ring directly affects the normal operation of gas turbines and aero-engines. [0003] The fuel injection ring designed for a gas turbine is composed of 3 groups of parallel oil circuits, and each group of oil circuits is composed of three holes, one of which is the oil inlet (diameter Φ4), and the other two holes are fuel injection ports (fuel injection The ports are connected in parallel, and the apertures are Φ2 and Φ0.8 respect...

AI Technical Summary

Problems solved by technology

For fear that the amount of single hole grinding is too large and the flow rate exceeds the limit, the operator can only reduce the amount of single hole grinding, increase the number of hole grinding and flow test to meet the design requirements

This processing method is not only heavy in workload, long in cycle, and high in risk, but also scrapped parts due to unqualified flow rate.

Because the fitter grinding method is used for grinding the fuel injection hole, a little carelessness will cause the change of the fuel injection angle, which cannot meet the design requirements

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