Thin-walled flexible bearing machining technology

Abstract

The invention discloses a thin-walled flexible bearing machining technology. The thin-walled flexible bearing machining technology includes the thin-walled inner ring machining procedure, the thin-walled outer ring machining procedure, the pulling and jacking assembly procedure and the examination procedure. An outer ring chamber of a thin-walled outer ring and an inner ring chamber of a thin-walled inner ring are subjected to turning machining before heat treatment; an outer ring R angle on the outer circumferential face of the thin-walled outer ring is machined and formed through a grinding process; and an assembling tool guarantees that the deformation amount of the thin-walled outer ring and the deformation amount of the thin-walled inner ring are the minimum at the same orientation through the outer ring tensile force and the inner ring jacking force. According to the thin-walled flexible bearing machining technology, a steel ball is assembled in the manner that the assembling tool pulls the outer ring and jacks the inner ring, the pulling and jacking process during assembling makes the deformation residual stress of the outer ring reduced to the minimum, the essential minimum deformation amount of the outer ring is formed when the steel ball is placed in for assembly, and therefore the residual stress caused by assembly is greatly reduced, and the service life of a product is also effectively guaranteed.

Description

technical field [0001] The invention relates to the field of flexible bearing technical equipment, in particular to a thin-walled flexible bearing processing technology. Background technique [0002] In robot devices, harmonic reducers are widely used due to their advantages of simple structure, small size, low noise, large transmission ratio, high transmission precision and high efficiency. Among them, harmonic reducers include wave generators, rigid For gears, flexible gears and flexible bearings, the inner ring and outer ring of the flexible bearing are thin; for the harmonic reducer, the flexible bearing is installed on the corresponding cam and can produce corresponding deformation according to the shape of the cam profile curve. [0003] In the prior art, the assembly of thin-wall flexible bearings is a key technical bottleneck, because there are more steel balls than ordinary deep groove ball bearings, and it is required that the steel balls will not fall out of the r...

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Problems solved by technology

[0003] In the prior art, the assembly of thin-wall flexible bearings is a key technical bottleneck, because there are more steel balls than ordinary deep groove ball bearings, and it is required that the steel balls will not fall out of the raceway when there is no cage, and it must meet the life requirements of elliptical deformation , it is necessary to reduce the residual stress in the assembly process. The traditional assembly method adopts the method of putting steel balls into the largest gap between the inner and outer rings formed when the outer ring is pressed against. High requirements; 2. High assembly stress, resulting in low service life; 3. Complicated grinding and debugging and high scrap rate; 4. High stress during chamfering; 5. The chamfering of the outer ring is not smooth enough, which is easy to scratch wheel, and the ferrule itself has a large stress at the chamfer and is easy to break

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