Development Of Building Up Technology For Diesel Engine Cylinder Head Based On Robot

For marine diesel engine cylinder head production process efficiency is not high, man-made factors affecting the welding quality, poor working conditions, high labor intensity of production workers, about the use of cylinder head welding robot welding technology program.According to the structural characteristics of the cylinder head, cylinder head design of analog parts, and using KUKA robot system, combined with weld seam tracking system to find bits and pieces of the simulation for teaching programming, search engine cylinder head to the starting position and weld arc welding process to ensure weld always in the center. Reduce bias caused by welding assembly position deviated from the programmed path of the location request, to reduce the adjustment time of the gun.By programming the robot and positioner coordinate control, through the cylinder head positioner and linkage parts modeling, path planning, makes the area to be soldered in the best welding position, the cylinder head to simulate the actual welding.Welding of the cylinder head is the essence of corrosion in the base material on the welding of metal, this choice for welding nickel-based corrosion resistant alloys. By using multi-layer multi-pass welding, weld metal to improve the plasticity, grain refinement of the organization. In addition, in order to prevent in crack or peel, take control of preheat and interpass temperature, reducing the cooling rate after welding, welding stress and structure of the binding degrees welding is effective to prevent cracks.The CO2 content has conducted the research to the built-up welding process to the welded joint quality's influence, has obtained CO2 in the gaseous mixture the appropriate allocated proportion proportion. Through carries on the welded joint attachment simulation test on the plate, has obtained the attachment best amount of overlap. Analyzed the melt to weld in the formation to take shape the quality existence flaw, and aimed at each kind of flaw to analyze it to form the reason, proposed the melt welded the formation formation merit rating target, evaluated the melt to weld the formation surface formation quality effectively the quality. Has carried on the group interval to the formation quality influence experiment, has obtained the reasonable group interval arrangement. Multi-channel welds the engineer testing through the multi-layer, the butt weld electric current, the arc voltage, optimizations and so on welding speed and swinging form, obtains the appropriate welding process standard.Using KUKA SIM Pro software, the necessary three-dimensional model has been builded up through Pro / E, and then was introduced into the KUKA SIM Pro, that is, the robot and cylinder head were"created out"in the computer. Constraints on the model were established, so that the model movement was in accordance with the manner required in the simulation environment, the robot operating path for the right cylinder head groove welding station was designed, to achieve the purpose to guide the actual production.Using robot welding process, compared with the original manual welding process, weld appearance, weld quality is stable, while greatly enhanced productivity, great social and economic benefits.