Design And Application Of Laser Processing Assist Devices For Tube Parts

With the rapid development of laser cutting technology,the types of profiles cutted by laser cutting machines,which have gradually became more and more finalized.At present,there are plate cutting machines,tube cutting machines,special-shaped material cutting machines and cutting manipulators.Small-sized and medium-sized enterprises usually need to process of complicated and small quantities parts.As to purchasing of multiple models not only increase investment,site occupancy and production costs,but also cause equipment idleness and unnecessary waste.In order to solve this problem of comprehensive utilization of equipment in small-sized and medium-sized enterprises,processing auxiliary tooling of laser cutting equipment need to be researched and designed for pipe.Improving the application range of laser cutting machines achieves multi-use of one machine.Processing auxiliary tooling of laser cutting equipment have high practical value for promoting the development of small-sized and medium-sized enterprises.The domestic GF3015 laser cutting machine mainly processes sheet metal parts.Without changing the basic structure,it increases the laser processing capability of pipe.The main researches are as follows:(1)According to the capacity and available space of the domestic GF-3015 laser cutting machine,processing pipe parts device is design.The main technical parameters: cutting diameter Φ20~Φ100mm,cutting length 1000 mm and cutting thickness is according to different materials.Such as cutting stainless steel thickness is less than 3mm and cutting carbon steel thickness is less than 6mm.Satisfy the cylindrical cutting of the tube and various types of processing on surface.(2)Designed the movement scheme for pipe parts,which use double-roller drive mechanism and screw displacement mechanism to finish laser cutting and accurate positioning for different size pipe parts.The Inventor of 3D software is used to construct the 3D motion model of the auxiliary tooling equipment,which solve the problem of motion interference in the laser processing of tube parts.Using Ansys of finite element analysis software study strength and stiffness of processing pipe parts device.The required power is calculated and the control motor is selected.Purchase standard profiles and standard parts to manufacture prototypes.(3)Select the CNC system to control tube parts processing device.According to the domestic GF-3015 laser cutting machine’s own control system and processing program.The pipe part processing experiments were studied.(4)There are the pipe parts processing device and GF-3015 laser cutting machine,which are used Comprehensively.What are the main influencing factors that through the single factor test to the parameters(power,speed,and shielding gas pressure)that affect the processing quality.Multiple sets of orthogonal tests to determine the reasonable cutting parameters of different specifications of the pipe.Through practical application,a database of partially processed pipe parts has been built.Also to achieve circular cutting of tube parts and various types of graphic processing design goals.