Design Of Wire Cutting Device For Joint Robot And Study On The Influence Factors Of Electrode Wire Tension

With the continuous development of science and technology,complex space three-dimensional structure of the refractory metal parts are widely used in aviation,aerospace and other key sectors,in reality many of parts processing requirements of Angle or cross section with different shapes,wedm processing technology has become one of the important means of processing this kind of parts.At present,machining complex structural parts at home and abroad is usually installed in the EDM wire-cut machine taper cutting device,this device makes the electrode wire change a certain Angle,so as to cut with Angle,this processing method is largely constrained by the machine tool body structure.Therefore,the research direction of high-speed wire-cutting EDM machining system for joint robot technology is proposed in this paper.The wire-cutting device is the main research topic of wire-cutting EDM through joint robot.This paper aims to develop a wire-cutting device suitable for joint robot processing.In order to solve the processing tasks of some large parts or complex structure parts which are not easy to be processed by adding bed,and to carry out experimental research on them,and analyze the factors that may affect the tension change of electrode wire in the process of processing.The main research contents of this paper are described as follows.In this paper,WEDM for joint robot includes WEDM and joint robot.This paper summarizes the current situation of WEDM application at home and abroad and the current situation of joint robot in the field of cutting at home and abroad.Based on the analysis of wedm processing technology and joint robot technology related knowledge,for using wedm machining of joints,the robot walk way to carry on the design selection,complete configuration design for robot joints wire-cutting processing,virtual prototype is established in the ADAMS software,and kinematic simulation of the machining way,The stability of the robot in the process of motion was tested,which laid a foundation for the subsequent development of the wire cutting prototype for the joint robot.This paper designs and processes the wire cutting device of WEDM for joint robot.Wirewalking device is an important part of wire cutting robot processing,its performance is good or bad directly affect the machining accuracy of WEDM,compared and analyzed the difference between the wirewalking device used by joint robot and the wirewalking device used by wire cutting machine tool,to determine the design content of wire cutting device.The function of each component of the wire walking device was analyzed,and the wire storage barrel components,transmission components,wire exhausting components and wire frame components of the wire walking device were designed and selected successively.Finally,the processing and assembly of the physical prototype of the wire walking device was completed.Based on the analysis of the machining process of the wire cutting robot,the wire moving device was experimentally studied in order to solve the problem of the tension variation of the electrode wire during the machining of the joint robot.Through the experiment tested the wire electrode tension between storage wire barrel reciprocating operation position change law of inspection wire electrode tension and silking system variation law of running time between tested the wire electrode tension is influenced by the Angle change,analysis experiment the wire electrode tension and silking device running Angle of the relationship between time and space.