| With the development of the world economy and the growing demand for energy, thetraditional non-renewable energy resources pollute the environment seriously and is nearingdepletion. The clean renewable energy is the common need of human development. Nuclearpower, as one of the main clean energy, has turn into the main direction of the world’s commonpursuit and development. But the nuclear safety is a core issue of nuclear power, nuc lear powermain pipeline, as the key part in reactor, of which the intensity determines the safety factors ofthe nuclear reaction, and usually the nuclear safety accidents are closely connected with thestate of the reactor main pipeline. Compared to the traditional cast tube, the integral forging ofAP1000main pipe, significantly improves the intensity and the service life, and the safetyfactor is over2times than the cast tube. But the bending and deep pipe inner bore hole bringsgreat difficulty to the final finish. The traditional processing device can not meet the demand ofthe processing of the curving deep hole. At present it remains the machining problem in theworld. Compared to the traditional cast tube, the integral forging of AP1000main pipe,significantly improves the intensity and the service life, and the safety factor is over2timesthan the cast tube. But the bending and deep pipe inner bore hole brings great difficulty to thefinal finish. The traditional processing device can not meet the demand of the processing of thecurving deep hole. At present it remains the machining problem in the world. No unit or personsolved this task which have been proposed by the national ministry of science and technology，before we undertaked it.Based on the size of the inner hole shape, the accuracy of form andposition requirement and the performance analysis of AP1000forging material, this paperproposes a new method of servo machining inner hole, design follow-up processing device byusing virtual manufacturing technology, and the finite element analysis and motion simulation,then processing a scaled-down development test, eventually produce qualified specialequipment.The follow-up processing device movement theory analysis, finish high rotational jointstiffness of structure design and the ADAMS simulation movement, through experiments tosolve high pressure seal is researched in this thesis. The follow-up processing equipment parts3D modeling and virtual assembly are finished by using Pro/E3D software, and motionsimulation and interference check of the servo processing equipment are solved by using themechanism module of Pro/E, as well as the important parts finite element analysis and Structureoptimization of the follow-up processing equipment are solved by using the Mechanicafunction of Pro/E. With Dynamical modal analysis of the equipment by use of ANSYSsoftware，we can get the follow-up processing of parts of equipment and modal natural frequency and vibration mode, in order to evaluate the dynamic characteristic of equipment andspare parts. The transmission of cutting power source; the high rotational joint stiffnessstructure design and the follow-up trajectory programming and calculation are the keytechnology of this topic.The problem of processing AP1000main pipe inner hole is solved effectively by means ofthe follow-up processing method in this topic。... |
