A sealing ring processing method and a sealing ring processed by the method

Abstract

The invention relates to a processing method of a sealing ring and the sealing ring processed by the processing method, wherein shallow grooves gradually becoming shallow and narrow from the outer side of a sealing end surface to the inner side of the sealing end surface are formed in the sealing end surface of the sealing ring. The processing method is characterized by comprising the following steps: grinding the sealing end surface, and grinding the shallow grooves wherein in the step of grinding the shallow grooves, the axis of a cup-shaped abrasive wheel and the axis of the sealing ring are not in parallel, the inner periphery of the end surface of the cup-shaped abrasive wheel extends out the outer side of the cylindrical surface of the outer periphery of the sealing end surface relative to the lowest point of the sealing end surface, except the rotating motion of the cup-shaped abrasive wheel, the cutting-in motion of the cup-shaped abrasive wheel relative to the sealing ring and the dividing motion of the sealing ring, the cup-shaped abrasive wheel does forming motion relative to the sealing ring in the three-dimensional space according to the motion rules, and the shallow grooves gradually becoming shallow and narrow from the outer side of the sealing end surface to the inner side of the sealing end surface are formed in the sealing end surface through the forming motion of the cup-shaped abrasive wheel, so that the processing accuracy is high, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of sealing ring processing, and relates to a processing method of a sealing ring provided with a shallow groove on the sealing end face, in particular to a sealing ring on the sealing end face which gradually becomes shallower and narrower from the outer side to the inner side of the sealing end face. The processing method of the shallow groove sealing ring and the sealing ring processed by the method are applicable to various forms of contact mechanical seals and non-contact mechanical seals. Background technique [0002] Opening a shallow groove on the flat sealing end face of the sealing ring of the mechanical seal can enhance the lubrication of the sealing end face, reduce friction and wear on the end face, reduce frictional heat, and improve the stability and life of the seal. At present, the mechanical seal with shallow grooves on the end face has developed into a typical non-contact mechanical seal. ...

AI Technical Summary

Problems solved by technology

[0003] Since the depth of the three-dimensional gradual shallow groove is on the order of microns, the shape of the shallow groove is complex, the structure is fine, the precision is high, and the roughness is relatively strict. The sealing end face is opened, so the processing is relatively difficult, and the conventional mechanical processing method is almost powerless. The high-precision processing of the three-dimensional gradual shallow groove is one of the core technologies of the mechanical seal.

At present, lasers are widely used at home and abroad to process three-dimensional gradual shallow grooves on hard sealing rings. When laser processing is used, there is a problem of large surface roughness. In addition, when lasers are used to process three-dimensional gradual shallow grooves, the material is scanned and removed layer by layer, leaving residual Height, only approximate forming, low forming accuracy

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