Fixture with high-sealing property for abrasive flowing polishing of inner surface of linear tube

Abstract

The invention discloses a fixture with high-sealing property for abrasive flowing polishing of a linear tube. A to-be-processed linear tube work piece is retained in the fixture, and the design of thefixture with high-sealing property enables a cavity with high-sealing property to be formed between the to-be-processed work piece and the fixture, so that the purpose of stable and efficient abrasive flowing processing is achieved. The fixture with high-sealing property comprises: charging cylinder and discharging cylinder; inner buckle clamp part and outer buckle clamp part which are respectively connected with the charging cylinder and the discharging cylinder to form a labyrinth seal and a thread seal, and constrain the movement of the abrasive medium, wherein the inner buckle clamp partand outer buckle clamp part are respectively connected with the charging cylinder, the discharging cylinder, and a nylon supplementing core to form seal such as labyrinth seal, end face seal, spigot seal and the like; and the nylon supplementing core used for constraining the to-be-processed linear tube and connected with the inner buckle clamp part and the outer buckle clamp part.

Description

technical field [0001] The invention relates to the field of non-traditional mechanical polishing processing, which is used for clamping a linear pipe to be processed and forming a well-sealed flow channel to ensure that the abrasive medium does not leak during the flow process in the linear pipe to be processed. Background technique [0002] Abrasive flow processing technology is a non-traditional mechanical polishing method, which squeezes a polymer-based or water-based medium mixed with abrasive particles through the surface to be processed to achieve smooth processing. In the process of abrasive flow machining, the action of abrasive grains on the surface to be machined can be divided into stages such as scratching, plowing and cutting. Under the action of hydraulic pressure or air pressure, the polymer-based or water-based abrasive medium reciprocates in the flow channel formed by the workpiece to be processed and the fixture. The fluid characteristics of the abrasive m...

AI Technical Summary

Problems solved by technology

[0004] Although the existing linear tube fixture sealing technology has a certain effect, for the polymer-based abrasive medium and water-based abrasive medium with low viscoelastic effect, the existing fixture seal design is high in sealing, preventing leakage, and keeping the linear tube polishing process smooth. There are still certain limitations in deformation and other aspects, and there are many problems

[0005] In addition, the existing straight pipe fixture sealing technology has poor applicability, and different special fixtures need to be used for different types of straight pipes

When the length of linear pipe parts is uneven and the length-to-diameter ratio has different series, a large number of special fixtures are required, resulting in waste of resources and poor economy

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