A kind of multi-layer back support ring processing method

Abstract

The invention discloses a multilayer backup ring processing method which comprises the following steps of: selecting a pipe according to the inner diameter and outer diameter size of a to-be-processed backup ring, wherein the pipe can be directly used when the inner diameter and outer diameter size of the pipe meets the needs; processing the outer diameter of the pipe by an outer diameter turning tool when the inner diameter and outer diameter size of the pipe cannot meet the needs, so that the processed pipe outer diameter is consistent with the to-be-processed backup ring outer diameter; processing the inner diameter of the pipe by an inner diameter turning tool, so that the processed inner diameter of the pipe is consistent with the to-be-processed backup ring inner diameter; performing rotary cutting on the pipe along a spiral track by using a cutter, and processing the pipe into a semi-finished backup ring of a continuous spiral annular structure; and cutting off the semi-finished backup ring along the radial direction according to the circle number of the annular structures of the to-be-processed backup ring, thereby obtaining the multilayer backup ring product. According to the processing method disclosed by the invention, the multilayer backup ring with multiple circles of annular structures can be wholly processed and shaped by utilizing a digital controlled lathe.

Description

technical field [0001] The invention relates to the technical field of a processing method for a special backing ring, in particular to a processing method for a multilayer backing ring. Background technique [0002] Backing ring (Backup ring) is a gasket or sealing ring product applied to the pump or piston, such as figure 1 As shown, the traditional back support ring only has a ring structure of one circle, and the back support ring is prone to wear and tear during use, and the function of the back support ring will have an obvious downward trend after long-term use; in order to overcome the above-mentioned single-turn The shortcomings of the short service life of the ring-shaped backing ring have gradually occurred in the prior art such as figure 2 The double-layer backing ring with double-circle ring structure shown in the figure, because the double-layer backing ring is supplemented by the double-layer annular gasket during use, compensates for the loss of the backing...

AI Technical Summary

Problems solved by technology

[0003] However, because the double-layered backing ring has a ring structure more than the traditional backing ring, the processing difficulty of the backing ring product is increased, and the traditional one-by-one cutting method cannot be used to process the double-layered backing ring. However, there are disadvantages of low processing efficiency and high processing cost, which greatly limits the popularization and application of double-layer backing rings, and makes the application rate of double-layer backing rings far lower than that of traditional backing rings.

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