Novel integrated machining clamp and process for aero-engine turbine blade

Abstract

The invention discloses a novel integrated machining clamp and process for an aero-engine turbine blade. The novel integrated machining clamp comprises a base, a support arranged on the base, a chuck assembly and an end face positioning assembly, wherein the chuck assembly and the end face positioning assembly are arranged on the support. The chuck assembly comprises a tenon tooth positioning block arranged on the support, a tenon tooth clamping block connected with the tenon tooth positioning block in a matched mode and a locking part arranged on the tenon tooth clamping block, and a tenon tooth groove used for clamping the blade is formed between the tenon tooth positioning block and the tenon tooth clamping block. The end face, close to the tenon tooth clamping block, of the tenon tooth positioning block and the end face, close to the tenon tooth positioning block, of the tenon tooth clamping block are both provided with teeth. The machining clamp is reliable in structure and good in use performance, and machining and positioning accuracy is improved. Grinding is convenient. According to the machining process, the design principle of process concentration is adopted, machining surfaces with the same positioning mode are concentrated in one working procedure for machining, and the machining precision is guaranteed through the precision of numerical control powerful grinding equipment. Repeated clamping errors are reduced, and the tool manufacturing cost is reduced.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a novel integrated machining fixture for an aero-engine turbine blade and a machining process thereof. Background technique [0002] At present, there is an urgent need for a large number of advanced aero-engines in China, and high performance, high reliability and long life are required. As a key component of an aero-engine, turbine working blades work in a harsh environment of high temperature and high pressure. While being impacted by high-temperature gas, they also perform high-speed rotating motion around the turbine shaft and bear huge centrifugal force, alternating stress and thermal stress load. , requiring high reliability and fatigue resistance. [0003] Turbine working blades have a complex structure: the tenon head adopts fir tree-shaped tenon teeth, and some blade tips are designed with leaf crowns, and there are sealing teeth on the leaf crowns. The blade bod...

AI Technical Summary

Problems solved by technology

Under the current new situation of high-density model development, it can neither meet the needs of fast and efficient model development, but also cause a lot of tooling waste

At the same time, due to the long process route and the accumulation of multi-process and multi-factor errors, the processing accuracy of the product is reduced and the pre-research model verification is affected

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