Turning technique for long spoke portion of integral impeller

Abstract

The invention provides a turning technique for a long spoke portion of an integral impeller and belongs to the technical field of machine manufacturing. The turning technique comprises the following steps that firstly, a novel clamp is used for clamping a part; secondly, a rhombus cutter is used for conducting turning from inside to outside, and turning is conducted according to the processes of rough turning, primary semi-fine turning, secondary semi-fine turning and fine turning. The novel clamp used in the first step comprises a machine frame. A reversely hooking compressing block and an auxiliary supporting block are arranged on the machine frame, wherein the reversely hooking compressing block can be matched with the outer edge of the long spoke portion of the integral impeller, and the auxiliary supporting block can be matched with the spoke navel portion of the long spoke portion of the integral impeller. By the adoption of the turning technique for the long spoke portion of the integral impeller, the machined long spoke portion of the integral impeller is high in machining quality and accurate in machining size.

Description

Technical field: [0001] The invention belongs to the technical field of mechanical manufacturing, and in particular relates to a process method for turning the long-radius plate part of an integral impeller. Background technique: [0002] With the improvement of thrust-to-weight ratio requirements of aero-engines, the application of integral impellers is becoming more and more extensive. The processing quality of rotors not only directly affects the life of the entire engine, but also has a great impact on its safety and reliability. The traditional processing method of long-spoke plate parts usually adopts the processing method of rough turning + semi-finish turning + finish turning. The thickness is thinner, the processing accuracy is higher, and the nickel-based superalloy is generally used, and the machinability is poor, so the processing difficulty is relatively high. In the original processing technology, the processing resistance is large, the thermal conductivity is...

AI Technical Summary

Problems solved by technology

The traditional processing method of long-spoke plate parts usually adopts the processing method of rough turning + semi-finish turning + finish turning. The thickness is thinner, the processing accuracy is higher, and the nickel-based superalloy is generally used, and the machinability is poor, so the processing difficulty is relatively high.

In the original processing technology, the processing resistance is large, the thermal conductivity is poor during cutting, it is easy to stick to the knife, and severe work hardening occurs, which often causes the deformation of the web after processing, which leads to some dimensions and technical conditions that are out of tolerance and cannot meet the design requirements.

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