A manufacturing method of a turbine blade positioning base

Abstract

The invention discloses a turbine blade positioning base manufacturing method. The turbine blade positioning base manufacturing method comprises the following steps: (A) casting equipment is provided;the casting equipment comprises a casting base, a fixed positioning block and a movable positioning block; and a movable clamping part and a fixed clamping part fixedly clamp tenon teeth; (B) low-melting-point alloys are cast; and (C) alloy removing equipment is provided, and comprises a shaping base; the shaping base is provided with a rectangular working groove; horizontal oil spraying heads with the same heights are arranged on two opposite side walls in the working groove; and the horizontal oil spraying heads spray hot oil with a temperature of not lower than 180 DEG C to the connectingplace between two strip cavities until alloy blocks wrapped on top teeth of tenon heads under the strip cavities fall to finish preparation of rectangular blocks. In the turbine blade positioning basemanufacturing method, through preparation of standard positioning bases, the blade measuring period can be greatly shortened.

Description

technical field [0001] The invention relates to the technical field of aeroengine production, in particular to a method for preparing a positioning base for measuring turbine blade parts during the production process of turbine blades of small and medium aeroengines. 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...

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

Images