An automatic assembly method for shaft holes based on laser-assisted alignment

Abstract

The invention relates to an automatic shaft-hole assembling method based on laser assisted centering. The method comprises the following steps that 1) an assembling shaft part (3) approaches an assembling hole part (5); 2) the pose of the assembling shaft part (3) is adjusted coarsely; 3) the pose of the assembling shaft part (3) is adjusted finely; 4) first-stage feeding of the pose of the assembling shaft part (3) is carried out; and 5) second-stage feeding of the pose of the assembling shaft part (3) and a spline shaft segment assembling stage are carried out. Via the above steps, the shaft-hole parts can be centered and assembled automatically under a complex assembling condition, the shaft-hole assembling efficiency and quality are improved, and the problem that automatic shaft-hole assembling cannot be realized in the complex condition is solved. A laser assisted centering technology is used to realize rapid, accurate and non-contact detection for the shaft-hole axial error, surface structures of the parts are prevented from damage in the shaft and hole cooperation process, the adjusting efficiency and accuracy are improved, the labor intensity is reduced, the automatic degree of assembling is improved, and the manufacture period of products is shortened.

Description

【Technical field】 [0001] The invention provides a shaft hole automatic assembly method based on laser-assisted centering, in particular to a laser-assisted centering-based shaft hole assembly method under complex assembly conditions, and belongs to the technical field of assembly automation. 【technical background】 [0002] With the development of high-precision technology in aerospace, automobile, national defense and other fields, challenging requirements are put forward for assembly technology, such as RV reducer, aero-engine and other high-precision assembly. Shaft hole assembly is a very critical part of industrial production, and the quality of assembly often affects the final quality of the product. [0003] At present, the shaft hole parts in the research on shaft hole assembly are relatively simple, and rarely involve more complex assembly situations such as stepped shafts and spline shafts. Take the assembly of the fan unit body and the core unit body in the aero-e...

AI Technical Summary

Problems solved by technology

Therefore, in this case, simple force and position control alone cannot achieve smooth assembly.

At present, the assembly of aero-engines is still mainly done manually. This method requires a high level of technical experience for the workers, and leads to a heavy workload and low efficiency for the assembly workers, and the quality of the engine assembly cannot be fully guaranteed.

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