Design Of Special Welding Machine Of Automobile Linking-bar

This article elaborated the design of special welding machine of automobile linking-bar,mainly included the mechanism design and the electricity control design.The welding process is one of the most representative three important technologies in the automobile technique of manufacture(welding,paint,general equipment department). Chinese automobile industry has passed through 50 years development,in the past 50 years, the Chinese automobile industry grew out of nothing,moved towards the internationalization gradually,the automobile welding technology also gradually approaches the international advanced level.It is economical to use welding special machine in the part welding which has strong specialization and has regular weld bead spare and can satisfy the welding technology the request.Recently,the special welding machine has obtained the massive applications in our country automobile industry.Every year near thousands welding special machine has been used in the automobile production. Besides the automobile assembly plant has used many weld the special machines,in the automobile spare part factory also had the massive applications.This special welding machine mainly used to weld the automobile linking-bar;the welding method is TIG;the linking-bar's length scope is from 300mm to 500mm,the linking-bar's wipe scope is from 0 to 40mm,the linking-bar's angle is from 0 to 35°.The mechanical structure of special welding machine of automobile linking-bar contains four parts,the banking mechanism,the clamp system,the four-bladed slide vane and the operating platform.The content involves to the electric motor,the speed reducer, the air-cylinder,the air compressor,the ball bearing screw rod and so on,and including the choice as well as the localization and so on.The four-bladed slide vane has adopted the double location welding torch motion according to the technological requirement,causes it to complete two straight welded joints in an operation the goals.In the design of electric control system,takes the SIMENS S7-224 as CPU,uses the electromagnetic valve,relay and so on to complete the control of special welding machine. As the request of welding procedure,the machine needs adjust the welding speed using CF2B-2B silicon-controlled rectifier controller.In the machine,uses proximity switch to control the position,selects three-position four-way electromagnetic directional valve to control the clamp system's clamp and unclamp.