A process method for lathe processing of large-diameter, precision and complex-shaped thin-section parts

Abstract

The invention discloses a method for turning a large-diameter precision complex molded surface thin sheet part and belongs to the technical field of machining. The method comprises the following steps that (1), it is ensured that the part leakage length is greater than or equal to a half of the width of the whole part, and the molded surface of the outer side of the first surface of the part is turned, namely a half of the molded surface of the outer side of the first surface of the part; (2), the molded surface of the inner side of the first surface of the part is turned, and smooth adaptation connection between a connection knife and the molded surface is noticed; (3), the molded surface of the outer side of the second surface of the part is turned, namely one third of the molded surface of the outer side of the first face of the part; (4), turning of part of the molded surface of the middle of the second surface of the part is finished under the state that the inner side and the outer side are compressed at the same time; and (5), machining of the molded surface of the left of the second surface is finished, smooth adaptation connection between the connection knife and the molded surface is noticed, and the whole machining process is finished. The technical bottleneck of turning of thin-walled sealed washers of high-precision, novel-structure and precision complex molded surfaces is effectively solved, and the far-reaching significance is achieved for improvement of the manufacturing technical level of a new generation of engines.

Description

Technical field [0001] The invention belongs to the technical field of mechanical processing, and particularly relates to a process method for lathing processing of large-diameter precision and complex profile thin parts. Background technique [0002] In machining technology, especially in the processing and manufacturing of aero-engine and gas turbine rotor parts, the processing of large-diameter precision and complex profile thin-walled parts has always been the key to the processing of thin-walled annular parts, and this type of technology has always attracted attention. [0003] With the continuous improvement of engine thrust-to-weight ratio and performance, the structure of aero-engine and gas turbine turbine rotor parts has also undergone great changes. The processing of the precision and complex profile of aero-engines and thin-walled seals is impossible due to the complex profile requirements of the parts. Processing on a surface grinder, the wall thickness is only about 1...

AI Technical Summary

Problems solved by technology

[0003] With the continuous improvement of the thrust-to-weight ratio and performance of the engine, the structure of the rotor parts of the aero-engine and gas turbine has also undergone great changes. The machining of the thin-walled sealing plate with the precise and complex profile of the aero-engine cannot be done due to the complex profile requirements Processed on a surface grinder, the wall thickness is only about 1mm, and the geometric and dimensional tolerances are only 0.02. It is difficult to clamp large-diameter precision and complex-shaped thin-section parts, and it is easy to deform, which cannot meet the geometric tolerance and dimensional tolerance accuracy. requirements

Images