| Pipe cutting technology is one of the important contents of advanced laser manufacturing technology,with the application of laser cutting technology in the field of industry and the breadth of laser tube cutting technology in the industrial field in depth;the laser pipe groove angle cutting equipment for cutting and processing directly in the thick tube groove angle to research.The traditional pipe processing process in this paper to optimize the current "mechanical cutting-groove machining-welding connection",based on the laser processing technology on the laser cutting pipe directly after welding the pipe processing of lean thinking,and to carry out research and development of laser tube processing equipment cutting function based on the main research contents the following:First,based on the analysis of thick tube processing technology status,analyzes the traditional processing technology and laser processing technology,laser technology is proposed based on lean pipe cutting technology;on this basis,to carry out direct laser cutting pipe groove cutting technology of trajectory optimization.Starting from the form of the intersection between two vertical intersecting heads and the intersection angles of branch and slope,the corresponding mathematical models are established for establishing the corresponding mathematical model of the intersection angle of the main groove and the intersection line of the groove angle of the branch pipe,the cutting path is simulated by 3D cutting programming software,and the cutting path is optimized and the trajectory of cutting head is optimized,which mainly focuses on the optimization of cutting head tilt angle and the optimization of shaft constraints;finally,the path program of the cutting path and the path path of the branch pipe after the optimization are obtained,and using the optimized charge cutting path programming language in charge of cutting groove angle and the use of optimized pipe cutting path programming language branch groove angle cutting,so as to realize the intersecting line tangent to head diameter and pipe innerpath connected to better welding between fittings,thus,the intersecting line of the inner diameter of the head and the intersecting line of the inner diameter of the branch pipe are connected,and the welding between the two pipes of the pipe and the pipe is better carried out.Second,on the basis of establishing the machine tool form of pipe cutting path and trajectory,the overall design and optimization of laser cutting equipment for direct cutting groove is carried out,and the selection of main components and the integration of key components and equipment for the equipment system.the main selection of the device are:selection,selection of laser cutting selection and temperature control device of water cooling machine selection,the key parts of equipment integrated optimization design mainly from the foundation supporting scheme optimization design,fixture design and optimization of automatic feeding scheme optimization design considerations.Based on the overall structure and configuration of laser tube cutter,the mechanism of the laser cutting pipe machine and the design of the three overall structure optimization of the laser pipe cutter are established,then,the main components of the laser processing technology equipment are further selected,and the key parts of the laser processing technology and equipment are optimized,and the equipment is preliminarily integrated;finally,the hardware of the control system and the software design of the control system for the laser tube cutting machine are designed.After that,the laser tube cutting machine is integrated and debugged.Third,based on the research and development of the laser pipe cutting equipment with the cutting function of the groove,the process verification is carried out.the angle angle cutting process of the cutting process in the cutting process is studied in the cutting process of the cutting process.For the square tube with a specification of 1000x100x100 thickness of 4mm,the material is made of 45#steel,the two main factors are the cutting speed(mm/min)and the duty ratio of pulse laser from the corner cutting process of the square tube,and a single factor control method is used to study the key technology;the results of the study show that when the corner cutting is carried out,the minimum duty ratio of the pulse laser varies between 20%～75%and the cutting speed of laser cutting head is between 20%～80%.The surface quality after corner cutting is better,and the edges and corners of the cutting edges are smooth and no burrs.Research on the cutting process of the head through the hole of the supervisor and the branch pipe in the connection,the results of the study show that the value of the outer diameter XI of the head perforation should be precalculated in the early stage by the use of the perforation of the elliptical path cutting head,as a result,the overall processing efficiency is low,and the perforated outer diameter X1 value can not always increase.When the X value is slightly smaller than the outer diameter of the main pipe,the value of X1 will be limited,which can not reach the appropriate theoretical value,thus affecting the cutting of the circular hole;but the processing range of this method is larger;when cutting through holes on the head of a groove round hole,the main advantage is that there is no need for complicated pre calculation and processing before cutting,so the cutting speed is fast and the efficiency is high,but sometimes there will be a collision between a laser cutting head and a workpiece,through lots of experiments,it is known that when the piercing hole on the main pipe is cut by the groove hole,only when the ratio between the arch height of the cutting part of the head and the radius of the cutting main pipe is less than 0.3,can the slope hole cutting plan be used,that is to say,in the case of A/B<0.3,the cutting through perforation can be carried out.so it has a limited range of processing. |
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