Study On Electrochemical Removal Method Of Micro-burr On Precision Small Components

A burr is a very small ridge-like protrusion that exists at the edge of a workpiece,usually triangular,and is formed in a variety of manufacturing processes.Burrs can cause noise and various unsafe operations on machine parts after assembly.Therefore,burrs generated during machining must be removed,or the size of burrs must be controlled within a certain range as much as possible.For precision mechanical parts,the removal of tiny burrs is a very difficult topic.Traditional manual removal methods require time,labor and other related costs.The electrochemical machining method does not impose any mechanical stress on the part,which can quickly remove tiny burrs and obtain good surface quality.This article conducted electrochemical removal of micro burrs on cylindrical parts and plate parts produced by a company.This article first introduced the relevant theories of electrochemical machining,then explored the key factors affecting electrochemical deburring,and performed ANSYS three-dimensional electric field simulation on plate-like workpieces to achieve an overall grasp of the electric field distribution.The rectangular area where the current around the glitch is most concentrated was modeled,and the effect of voltage on the current density was obtained through simulation.Then established a two-dimensional mathematical model of electrochemical deburring,and numerically explored the variation rules of important processing parameters and processing time such as the original height of the burr,processing voltage,processing gap,and substrate loss,and provided a theoretical basis for the selection of processing parameters and established prediction model of deburring time.Then according to the shape of the plate-shaped and cylindrical parts and the distribution characteristics of the burr,the overall device for electrochemical deburring,tool cathode,tooling fixture were designed.Using this device,two sets of orthogonal experiments were performed on plate parts and cylindrical parts,and the results of the experiments were analyzed by range analysis and variance to obtain the optimal processing parameters such as processing current,processing gap,and electrolyte temperature.Finally,the dimensions of the deburred parts were measured.The results showed that the electrochemical deburring method can effectively remove small burrs on plate parts and cylindrical parts on a large scale and obtain good surface quality.