Method and device for stacking and assembling rotor discs

Abstract

The invention relates to a rotor disc stacking and assembling method and device. Wherein, the method for stacking and assembling the rotor discs includes the following steps: sequentially obtain the concentricity and deviation degree of the mounting edge of each rotor disc in the n-level rotor discs relative to the reference; calculate the deviation matrix of the n-level rotor discs; From the deviation matrix of the rotor disc, extract the coaxiality deviation function FE of the nth rotor disc relative to the first rotor disc with the installation angle β(i) as the variable; obtain the n-level rotor disc with the installation angle β(i) as the variable The unbalanced amount deviation function FU of the unbalanced amount deviation function FU; According to the coaxiality deviation function FE and the unbalanced amount deviation function FU obtain the deviation total function F=FE+k*FU, the independent variable of this deviation total function is the installation angle β (i ); take the total deviation function as the objective function to find the minimum value, and the obtained value is the installation angle β(i) of the corresponding rotor disc. The invention can improve the assembly accuracy and assembly efficiency of the stacked assembly of the rotor discs.

Description

technical field [0001] The invention relates to a rotor disc stacking and assembling method and device. Background technique [0002] One of the keys to the stack assembly of engine rotor discs is the control of coaxiality. In the traditional coaxiality control method, the end runout and radial runout of the single-stage rotor disk installation spigot are measured, and the high point angle of the single-stage rotor disk is recorded. When assembling, ensure that the high points of the adjacent two-stage rotor disks are staggered by 180° ° can. The coaxiality control method is simple and efficient for the stack assembly of two-stage rotor discs. [0003] For the stacked assembly of rotor discs with more than three stages, staggering 180° is not the optimal installation angle. In the actual assembly, it is necessary to adopt the method of trial assembly, that is, to repeatedly try to install different installation angles, and then measure whether the runout of the monitoring...

AI Technical Summary

Problems solved by technology

Although this trial assembly method is effective, the efficiency is low. The main reasons are as follows: (1) There is often an interference fit between the rotor disks at all levels, and it is necessary to heat or cool the mounting edge of the parts.

(2) During repeated assembly and disassembly, tools such as pullers and pressers are needed

(3) The connecting bolts between some disks have limited tightening space, and special tooling is required to complete the tightening

Furthermore, the final installation angle obtained by the above trial installation method can meet the technical requirements but may not be the optimal installation angle

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