Puller for rotor assembly assembling of aero-engine

Abstract

The invention provides a puller for a rotor assembly assembling of an aero-engine. The puller comprises a supporting pulling element and a tight pressing element; the supporting pulling element comprises a supporting block, a movable block, a pulling claw, a pulling and rotating paster, a connecting rod, a pressing plate and pin shafts, wherein a step hole is formed in the center of the upper plane of the supporting block, joint holes which protrude in the circumferential direction and are uniformly distributed are formed in the side surfaces of the supporting block, holes formed in the jointholes of the supporting block and the upper end of the pulling claw are movably connected by the pin shafts or the connecting rod; the upper end part and the lower part of the pulling claw are provided with the two shaft holes, and the two shaft holes are parallel to each other; the movable block is located at the coaxial lower part of the supporting block and the upper surface of the movable block is parallel to the upper surface of the supporting block, a left-hand threaded hole is formed in the center of the upper surface of the movable block, joint holes which are uniformly distributed inthe circumferential direction at the same angle as the supporting block are also formed in the side face of the movable block, and the holes formed in the joint holes of the movable block and the lower part of the end part of the pulling claw are movably connected by the pin shafts or the connecting rod, wherein the joint holes of the movable block are parallel to the joint holes of the supportingblock; and a pressing rod fixed to a movable threaded rod sleeve is arranged in the center of the movable threaded rod sleeve, and a stress disc is fixed at the lower end of the pressing rod.

Description

technical field [0001] The invention relates to a tooling used for disassembly and use of an aeroengine rotor assembly and disc assemblies such as integral blisks and turbine disks during assembly. Background technique [0002] The rotor assembly has very high assembly requirements during the assembly process, especially the circular runout and surface runout of the assembly after the assembly is completed. It is difficult to meet the requirements of the assembly technical documents for one-time assembly. It is possible to assemble and disassemble the discs and blisks of the same level many times before they can meet the requirements of the assembly technical documents. Since the spigot fit between the disks of most rotor assemblies at all levels is an interference fit, and the interference is large, it takes time and effort during the disassembly process, and there are risks such as bumping and falling off, which will cause parts or components damage, which greatly reduces...

AI Technical Summary

Problems solved by technology

[0002] The rotor assembly has very high assembly requirements during the assembly process, especially the circular runout and surface runout of the assembly after the assembly is completed. It is difficult to meet the requirements of the assembly technical documents for one-time assembly. It is possible to assemble and disassemble the discs and blisks of the same level many times before they can meet the requirements of the assembly technical documents.

Since the spigot fit between the disks of most rotor assemblies at all levels is an interference fit, and the interference is large, it takes time and effort during the disassembly process, and there are risks such as bumping and falling off, which will cause parts or components damage, which greatly reduces labor efficiency, causes a lot of waste in manufacturing costs, and increases the risk of safety production reliability

[0003] Due to the diversity of aero-engine rotor components, blisks, turbine discs and other disc parts and components, and most of the parts are produced in small batches, if a dedicated disassembly tool is designed for each component, it will cause A large waste of processing costs also brings a lot of inconvenience to the tooling management work on the production site

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