Heat cover type grinding device for machining sealing ring with regularly conical surface

Abstract

A heat cover type grinding device for machining a sealing ring with a regularly conical surface comprises a radial extended disc body and an axial extension structure, wherein a central axis is used as the gyration center of the radial extended disc body; the axial extension structure extends to one side in the axial direction on the radial inner side ; the outer diameter of the axial extension structure can be matched with the diameter of an inner hole of a machined sealing ring; two axial end surfaces of the disc body are respectively a reference surface and a positioning working surface; the reference surface is perpendicular to the central axis; the positioning working surface can be in surface contact with a non-sealed end of the machined sealing ring; a radial groove is formed in a part, which is adjacently connected with the positioning working surface, of the axial extension structure; a peripheral surface of the axial extension structure is a cylindrical or conical gyration surface; and the diameter of a peripheral surface of a root in the direction of the positioning working surface is greater than or equal to the diameter of an axial extension end. By the grinding device, a sealing surface which has the size of several fen to dozens of fen, has the maximum stock removal of only dozens of micrometers in the axial direction and has quite high requirements on surface quality, particularly a regularly conical sealing surface, can be machined on a sealing end surface conveniently and accurately.

Description

technical field [0001] The invention relates to a grinding device for processing the sealing end face of a sealing ring, in particular to a sealing ring with a positive tapered sealing end face. Background technique [0002] The core components to achieve sealing in the mechanical seal are the moving ring which is axially fixed and can rotate with the shaft, and the non-rotating static ring which is arranged opposite to the moving ring through the sealing surface of the shaft end and can be used for axial floating. Cone mechanical seal refers to the sealing surface of the moving ring and / or static ring with a positive or reverse conical sealing surface with a certain taper in the radial direction and the end surface, and the adjustment is made by changing the parameters of the conical surface. The dynamic and static pressure effect of the fluid film formed by the medium between the sealing end faces to obtain sufficient opening force and fluid film rigidity. Cone mechanical...

AI Technical Summary

Problems solved by technology

[0003] Since the cone angle of the conical sealing surface on the sealing ring in the conical mechanical seal is small, the value is generally only a few minutes to tens of ten, so the maximum cutting amount of the end face in the axial direction during processing is only tens of microns, and Due to the very high requirements on the surface quality of the sealing end face, including surface roughness, flatness, perpendicularity to the axis, etc., it is difficult to obtain the sealing ring with a tapered sealing surface effectively by general methods.

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