Cutter for machining impeller of aero-engine

Abstract

The cutter for machining the aero-engine impeller comprises a cutter bar, a rough cutter part is arranged at the bottom of the cutter bar, positioning grooves are formed in the two sides of the top end of the cutter bar, a conical cutter part is arranged on the rough cutter part, and a spherical part is arranged at the bottom of the conical cutter part. The conical cutter part comprises a conical milling cutter body, a plurality of second threaded grooves, a plurality of flat cutting angles, a V-shaped groove and a connecting rod, a limiting mechanism is arranged above the connecting rod, the spherical part comprises a sphere, two connecting grooves and four reinforcing ribs, and the limiting mechanism comprises a sliding groove, four pressing grooves, four pressing blocks, a limiting groove, an elastic piece and a fixing nail. By means of the arrangement mode that the cutter bar, the rough cutter part, the conical cutter part and the spherical part are matched, different parts of the impeller can be precisely machined through a numerical control milling machining lathe under the condition that the cutter does not need to be replaced, the machining efficiency and precision of the aero-engine impeller are improved, and the machining efficiency of the aero-engine impeller is improved through the limiting mechanism. And the use and storage of the conical cutter part are more stable.

Description

technical field [0001] The invention relates to the field of impeller processing, in particular to a cutter for processing an aeroengine impeller. Background technique [0002] The turbine impeller is a rotary power machine that converts the energy of the flowing working medium into mechanical work. It is one of the main components of aero-engines, gas turbines and steam turbines, automobiles, and ship turbochargers. The overall structure of the aero-engine impeller Complex, the blade surface is a complex free-form surface, the twist is large, the requirements for machining accuracy are high, the channel between adjacent blades is deep and narrow, and the overall impeller is mostly made of difficult-to-machine materials such as titanium alloys and high-temperature alloys, and its blades are thin and The complexity of the blade shape makes it difficult to process the overall impeller. However, the existing five-axis linkage CNC milling process has the advantages of fast respo...

AI Technical Summary

Problems solved by technology

[0003]Because the existing aero-engine impellers are generally processed by ball-end milling cutters, and the existing ball-end milling cutters have a simple structure and cannot simultaneously The textured surface and the three-dimensional surface are relatively flat and large-scale surface processing, resulting in the need to replace the tool according to the different surfaces of the impeller when processing in the five-axis linkage CNC milling lathe, which affects the overall processing efficiency and accuracy

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