A kind of preparation method of aero-engine blade base

Abstract

The invention discloses a preparation method of an aeroengine blade base. The preparation method of the aeroengine blade base comprises the following steps that step A, a casting device is provided, wherein the casting device includes a casting base, a positioning template and a casting cavity, and a blade is fixed; step B, a low-melting-point alloy is poured in a casting cavity, and the arrangedblade is taken out when the low-melting-point alloy is cooled and solidified; and step C, a dissolution shaping device is provided, the dissolution shaping device includes a shaping base, and a hot oil cavity is formed in the shaping base, so that the alloy part, wrapping and covering lock piece grooves at the top of a tenon tooth, under the first horizontal plane is immersed in hot oil of the hotoil cavity, and the preparation of a rectangular block is completed. According to the preparation method of the aeroengine blade base, by preparing a standardized base, the measuring time of the blade can be shortened greatly, and meanwhile, the production cost and maintenance cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of aero-engine production, in particular to a method for preparing a base for measuring blade parts during the production process of turbine blades of small and medium-sized aero-engines. Background technique [0002] In the manufacturing process of aero-engines, the turbine blades can be cast and formed by precision casting of individual blade parts, and then the individual blade parts are assembled on the edge plate to form the whole turbine. [0003] Figure 1a It is a schematic diagram of a three-dimensional structure principle of a first-stage turbine blade; Figure 1b It is a schematic diagram of a three-dimensional structure principle of a two-stage turbine blade; Figure 1c It is a schematic diagram of the three-dimensional structure principle of a free turbine blade; Figure 2a for right Figure 1a Schematic diagram of the principle of blade size measurement for the first-stage turbine blade; Fi...

AI Technical Summary

Problems solved by technology

[0012] The above-mentioned existing measurement methods are cumbersome and complicated. For example, when measuring the airfoil shape, use a vise to clamp the rolling rods 2 during the clamping process, and the level of the two rolling rods 2 will eventually affect the measured airfoil shape. The accuracy of the data, so the operator must have rich experience to ensure the efficiency of the process of clamping the roller bar 2; and for the special measuring tool for measuring the edge plate 12 and the lock piece groove 131, such as Figure 2b and 2c As shown, if the gap between the mounting grooves is too large, it will be difficult to ensure the consistent state of the blades after clamping. If the gap is too small, it will be difficult to install the blades. Therefore, it is difficult to manufacture the mounting grooves and the accuracy is difficult to guarantee.

And in order to avoid damage to the blade, usually, the hardness of the material used to manufacture the special measuring tool (especially the position of the installation groove) will be less than the hardness of the material of the blade 1, so it is also easy to use during use. Causes wear of the mounting groove, which causes dimensional changes

[0013] In the measurement process, since each measurement part requires special tooling, multiple sets of special tooling are required for each blade, resulting in high production costs

In addition, the large number of tooling will also lead to difficult management, and the difficulty of tooling maintenance will increase

And because the whole process is manual operation, the clamping measurement process of each size requires the operator to have more skilled operation skills

[0014] Existing measurement process operating inefficiently

For each batch of at least hundreds of precision castings of various blades in actual production, since each blade needs to be measured, the measurement process takes a long time, which will become one of the important factors that delay the entire production cycle

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