Machining tool and machining method for precise step holes of aluminum alloy thin-wall casing

Abstract

The invention discloses a machining tool and a machining method for precise step holes of an aluminum alloy thin-wall casing. The processing tool is characterized in that a turning tool rod base is used for connecting a turning tool with a tool base part of a machine tool, so that the cutting range of the turning tool is widened, the degree of freedom of the turning tool is improved, and in particular, the turning tool can conveniently extend into the thin-wall casing when the precise step holes of the aluminum alloy thin-wall casing are machined. In the processing method, firstly, the thin-wall casing is placed on a fixture with the large end facing downwards and the small end facing upwards; then, screw holes in a clamping fixing surface at the large end of the thin-wall casing are aligned to screw holes in a clamping fixing surface of the fixture, and the thin-wall casing is clamped and fixed on the fixture through screws; and finally, the step holes are machined. The machining method can finish the machining of the whole step holes by clamping the casing once, and the deformation of the aluminum alloy thin-wall casing caused by clamping external force is prevented, so that the machining quality is guaranteed, and the machining efficiency is improved.

Description

technical field [0001] The application relates to a machining tool and a machining method for a precision stepped hole of an aluminum alloy thin-wall casing. Background technique [0002] The thin-walled casing is an important load-bearing transmission part of the engine. It is positioned and installed through the inner hole and outer circle of each part of the engine to achieve the same coaxiality of the engine, thus ensuring the safety and stability of the transmission parts during high-speed rotation. The thin-walled case is responsible for engine air intake and diversion to adjust the airflow, with an air intake channel, which consists of a rotating member structure composed of an inner and outer air intake channel of the leaf-shaped support plate and a stepped hole structure with an inner hole and an outer circle axially staggered. The consistency of the stepped hole directly affects the overall performance of the engine. During the processing of the thin-walled casing...

AI Technical Summary

Problems solved by technology

[0005] The clamping method adopted by this method can easily lead to deformation of the casing. After the fixture is replaced, it is affected by the deformation amount in the two clamping processes and the cumulative error of the installation reference surface, which makes it difficult to guarantee the processing quality, the processing pass rate is low, and the repair rate is low. High, which brings about the increase of management costs such as multiple measurement, job change, stagnation, etc.

Due to the backlog of the casings in the current process, it leads to equipment bottlenecks, increases the difficulty of workshop management, and has a large amount of isolated and processed items, which increases the error rate and brings great hidden dangers to production and quality management.

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