An assembly method of an aero-engine precision fit ring assembly

Abstract

The invention relates to assembling methods of parts, in particular to a method for assembling aero-engine precision fit ring-shaped components. The method comprises the following steps that an inner ring part and an outer ring part are matched to be mounted, and precision bolts are placed at an initial position; four symmetric precision bolts are selected to be symmetrically screwed by specified force; according to the sequence from the maximum value to the minimum value of benchmark jerk values of the inner surface of the inner ring part relative to the outer ring part, then the precision bolts nearby the position of the maximum value to the minimum value of the jerk values are sequentially screwed by the specified force; the above steps are executed again, the precision bolts are screwed repeatedly until the screwing force of each precision bolt reaches the screwing force moment number value required by the precision bolt design demand, and assembling of the ring-shaped components is achieved. The method solves the problem that the assembling precision can not be guaranteed easily due to structural sizes, machining precision errors, self micro deformation and the like when novel engine precision components are assembled, the matching number of parts can be reduced, and the assembling efficiency and the assembling precision of the precision parts can be improved.

Description

technical field [0001] The invention relates to an assembly method of parts, in particular to an assembly method of an aero-engine precision matching ring assembly. Background technique [0002] There are many precision-machined parts and precision assembly components on aero-engines. With the development of aviation technology and the improvement of the performance and reliability of advanced engines, higher requirements are put forward for the precision of machining and assembly of precision components. The general assembly method of aero-engines is to rely on the matching accuracy of the parts themselves and the precision pin positioning on the matching parts to ensure the assembly accuracy of the components, and then tighten the connecting bolts one by one or symmetrically. However, aero-engines are limited by the structural size and machining accuracy of the parts, as well as the micro-deformation of the parts themselves. It is difficult for general assembly methods to ...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for assembling a precision fit ring assembly of an aero-engine, which solves the problem that the assembly accuracy is not easy to guarantee due to factors such as structural size, machining accuracy errors, and self-deformation when assembling new precision components of the engine; it also solves the problem that the engine After the test run, the precision components are slightly deformed, and the shape and position tolerance of some precision components cannot meet the design requirements.

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