Research on deburring technology for cross hole on automobile brake master cylinder

Abstract

Burrs on cross hole on automobile brake master cylinder have an impact on service life and stability of the hydraulic braking system. Therefore, as for how to remove burrs on cross hole, this paper provides a flexible machining technology for deburring with the liquid impact-based fatigue fracture method. Firstly, a reasonable 3D model was established. Then Fluent software was used to conduct a numerical simulation analysis on inner flow passage of brake master cylinder in order to calculate the force condition of burrs surrounded by hydraulic oil. Next, modal analysis and harmonic response analysis on burrs were further conducted to calculate and analyse resonant frequency of burrs and verify feasibility of this method, which provides a reliable theoretical foundation for deburring methods for automobile brake master cylinder. In addition, machining technology of this method was optimised and a more reasonable machining plan was put forward, which was then applied on a machining platform and achieved great machining effect.