A method for assembling a bushing of an annular component and its fixture

Abstract

The invention discloses an assembly method of an annular component bushing. The assembly method comprises the following steps: (A) an annular component coats a support disc; (B) the annular component is positioned, so that a working hole is positioned above a stop block; (C) a bushing is cooled in liquid nitrogen for at least 5 minutes, and is quickly cleaned to put in a guide head; the pressure is applied to an ejection rod by using a rocking arm drill main shaft, so that the ejection rod presses the bushing into the working hole; (D) the rocking arm drill main shaft is lifted up, and the ejection rod leaves from the bushing under the effect of a spring to finish the assembly of the bushing of the working hole in the step (B); (E) a dowel pin is taken out, and the annular component is rotated, so that the working hole in the step (D) is rotated below the support disc; and (F) the steps (B) to (E) are repeated to gradually finish the assembly of the bushing. The assembly method of the annular component bushing guarantees that the key sizes of the annular component before and after the assembly can satisfy the design requirements, and effectively improves the processing efficiency. The invention further provides a fixture for the method.

Description

technical field [0001] The invention relates to a processing method of an aero-engine part, in particular to a method for assembling a bush around an annular component. The invention also provides a special fixture used for the above-mentioned assembling method. Background technique [0002] figure 1 Shown is a three-dimensional schematic diagram of a ring assembly 1 for an aero-engine, and 29 working holes 11 are evenly distributed on its ring periphery, and the working holes 11 all need to be assembled with bushings in an interference fit manner ( not shown in the figure), the traditional assembly method is not to add any protective measures, the fitter sets a spacer inside the hole, and then manually uses a hammer to knock the bushing into the working hole 11, so it is easy to make the assembled parts Deformation, and the deformation of the parts after assembly is uncontrollable, and the pass rate of the inner hole and outer circle of the ring assembly 1 after the bushin...

AI Technical Summary

Problems solved by technology

[0002] figure 1 Shown is a three-dimensional schematic diagram of a ring assembly 1 for an aero-engine, and 29 working holes 11 are evenly distributed on its ring periphery, and the working holes 11 all need to be assembled with bushings in an interference fit ( not shown in the figure), the traditional assembly method is without any protective measures, the fitter sets a spacer inside the hole, and then manually uses a hammer to knock the bushing into the working hole 11, so it is easy to make the assembled parts Deformation, and the deformation of the parts after assembly is uncontrollable, and the pass rate of the inner hole and outer circle of the ring assembly 1 after the bushing is assembled cannot be guaranteed, and the pass rate of the ring assembly 1 after assembly is less than 30%.

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