Machining fixture for metal sealing ring

Abstract

The invention provides a machining fixture for a metal sealing ring. The machining fixture comprises three inner clamping blocks. The inner clamping blocks are each in a sector shape. The radian of each inner clamping block is 120 degrees. Through installation holes are axially formed in the inner clamping blocks. The inner clamping blocks comprise sector-shaped clamping parts and sector-shaped supporting parts. The clamping parts axially protrude out of the supporting parts. The axes of the clamping parts and the axes of the supporting parts are collinear. The radius of the clamping parts is smaller than that of the supporting parts. The supporting parts behind the clamping parts can make contact with the end face of the metal sealing ring. In the machining process, the supporting parts can axially support the metal sealing ring, and the situation that the metal sealing ring is easily affected by internal stress in the turning process, buckling deformation is avoided, and circular run-out errors are caused is avoided. The machining fixture is particularly suitable for clamping metal sealing rings with the radial size far larger than the axial size.

Description

technical field [0001] The invention relates to a fixture, in particular to a metal sealing ring processing fixture. Background technique [0002] Metal sealing ring is a very common seal in industrial production. Its sealing function can prevent the leakage of water, oil, gas and other media, and it is widely used in machinery, pipelines and other equipment. Mechanical seals, also known as face seals, are used to seal rotating shafts of pumps, kettles, compressors, hydraulic transmissions and other similar equipment. The general sealing device includes a shell, a sealing ring and an end cover, which form a plane friction pair, relying on the pressure of the elastic member and the sealing medium to generate an appropriate pressing force on the contact surface (end face), so that the two end faces fit closely to achieve sealing effect. [0003] When the diameter of the processed metal sealing ring is relatively large and the thickness is small, it is easy to be deformed dur...

AI Technical Summary

Problems solved by technology

[0003] When the diameter of the processed metal sealing ring is large and the thickness is small, it is easy to deform during processing

Analyzing the reason, its radial dimension is much larger than the axial dimension, and it is easily affected by internal stress during the turning process, causing warping and deformation, resulting in circular runout errors

Furthermore, during the drilling operation, most of the holes are in a suspended state, and the drill bit drills the workpiece vertically downward, which is affected by the downward force of the drill bit, causing the workpiece to deform

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