Unigraphics NX-based blade profile software reshaping method

Abstract

The invention discloses a Unigraphics-NX (UG)-based blade profile software reshaping method. The method can effectively solve the problems that the orthopedic effect is instable and the deformation rebound is easily caused because the conventional mechanical orthopedics mainly depend on human experience, and can solve the problem that a mechanical orthopedic method cannot be used for blade profile reshaping due to special blade materials. The method comprises the following steps of: pre-processing a blade profile, and detecting the size of an inner arc and a rear arc of each gear of the pre-processed blade profile; analyzing the detection report, and listing deformation of comparing the steam admission side, the middle part and the steam outlet side of the inner arc and the rear arc of the profile line of each gear with the designed theoretical value of a blade; determining the correction quantity of the profile line of each gear according to the deformation, and performing different bias on the profile line of each gear according to the correction quantity to realize profile software reshaping; performing fairing and rounding on the software reshaped profile line data to generatea new model serving as a molding, compiling and processing program, and processing and detecting the profile according to the new program; if the blade profile processed by using the new program still does not accord with the requirement, continuing the adjustment; and if the detection result meets the process requirement, finishing the software reshaping operation, and performing batch production.

Description

technical field [0001] The invention relates to the technical field of blade profile shaping and processing, in particular to a UG-based blade profile software shaping method. Background technique [0002] There are a large number of surface deformation problems in blade manufacturing. Usually, mechanical correction is used to make the finished product meet the testing requirements. Generally, the amount and position of the surface deformation are determined on the frame first, and then the workers decide to adjust the blade shape based on experience. A certain position on the surface is used as a fulcrum and how much pressure is used to correct it. However, mechanical correction has many limitations. Stress treatment, deformation and rebound will still occur after a period of orthopedic treatment; second, if the surface tolerance is very tight, it is difficult to carry out mechanical orthopedics; third, some special materials (such as: titanium alloys, etc.) do not allow me...

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Problems solved by technology

[0003] In view of the above-mentioned problems, the present invention provides a UG-based blade profile software shaping method, which can effectively solve the problems of unstable orthopedic effects caused by traditional mechanical orthopedics mainly relying on human experience, and the orthopedic deformation is prone to rebound, and can solve the problem of Due to the special material of the blade, it is impossible to use the mechanical correction method to carry out the problem of blade surface shaping

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