Titanium-alloy high-pressure compressor arc rabbet working-blade processing technique

Abstract

A processing technology of an arc-shaped tenon working blade of a titanium alloy high-pressure compressor adopts one of the following three creative methods or combination thereof to carry out processing: firstly, the method of the coordinate application of a felt wheel and a polishing wheel is adopted to polish a titanium alloy blade; secondly, the methods of number control lathe and molding knife precise lathing are adopted to carry out processing to the double arc-shaped tenon of the titanium alloy blade; and thirdly, a special measuring tool is used for carrying out on-line measurement in the processing process of the tenon. The technology creatively solves the technical problems of the processing of the working blade of the arc-shaped tenon of the titanium alloy high-pressure compressor, fills the blank of the technical field, and has huge foreseeable value in economy, society and defense.

Description

Technical field: [0001] The invention relates to materials and mechanical science, and in particular provides a processing technique for a titanium alloy high-pressure compressor arc-shaped tenon working blade. Background technique: [0002] In the prior art, when the blade body is polished, a grinding wheel and a felt wheel are generally used. For example: first use a 46# grit grinding wheel for rough polishing, leaving a margin of about 0.1mm for the subsequent polishing step, and then use a 60# grit (or 80#) felt wheel to throw away a margin of about 0.04mm, using 100 # Granularity (or 120#) felt wheel to throw off the margin of about 0.03mm, and finally use the felt wheel of 150# to 180# to cast to the qualified size. [0003] The structure of the felt wheel used is: a wool felt wheel for the base body, and the required particle size emery is glued to the wool felt wheel (multilayer) (see attached figure 1 ). [0004] Due to the self-sharpening of such grinding wheels or felt w...

AI Technical Summary

Problems solved by technology

However, the straightness of the oblique line (working busbar) formed by the longitudinal and horizontal linkage of the CNC lathe is not good, and the maximum is 0.025 (convex)

The poor straightness of the bus bar on the tenon working surface (especially the protrusion) will lead to several very bad effects: First, the contact between the tenon working surface of the blade and the tenon and groove working surface on the compressor disk is not good (not uniform), resulting in When the engine is working, the force on the tenon is uneven (local stress concentration at the protrusion), which can easily lead to fatigue and fracture of the tenon; second, when using a tool microscope (or three-coordinate measuring instrument) to detect the angle of 35° and 110° of the tenon, the The poor straightness of the busbar on the face will increase the measurement error and cause misjudgment, which will directly affect the authenticity of the detection of the angle 110° and the difference between the two 35° angles less than 10′; thirdly, the poor straightness of the busbar on the working face will also directly affect the nodes Test results for dimension "B" (see Figure 14 )

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