| AP1000nuclear power elbow was forged by ultra-low carbon nitrogen stainless steelIntegral forging technology, it has high strength and the length and depth is relatively large. Thelength of curved segment of cambered surface was so long. Traditional processing methodsrequire more than one machine composite processing which caused high costs, time-consumingand the precision of the finished product is not excellent. In order to achieve the purpose of thehigh efficiency AP1000nuclear power pipeline processing on single processing equipment. Anew methods have been put forward for processing the elbow hole the kinematic processing.This method making processing device installed in the elbow and providing power through aspecial device, so that processing device could work along with the center line of bends. Thisarticle describes the new and old Processing methods in detail. Introduced the workingprinciple of the rotary joints, and deduced the motion parameters. All above, As long as therotary joint satisfies the requirements of the motion parameters, the kinematic processing wouldbe able to improve the processing efficiency and accuracy.Design of AP1000main pipeline processing polishing fixture equipment, the axis of themain channel of AP1000nuclear power is a fixture, the work piece automatically flip andmaintaining AP1000not move. Both inside and outside surfaces and shaped nozzles processing,polishing, measurement inside once completed, to improve the precision and greatly improvethe processing efficiency, the overall technological level and strive to reach the contemporaryinternational advanced level. Such a large work piece processing is very difficult, alsosignificant difficulty on the work piece clamping, due to the quality of the work piece, theasymmetric structure. The stability of the fixture has a high demand in the job processing.This article is based on a new method for processing the AP1000nuclear power elbowbore-processing servo processing method based on the AP1000nuclear power main channeldedicated processing equipment, designed to meet the processing requirements of the fixtureoverall device. After collecting a large number of related processing information about AP1000nuclear power main channels, we proposed several AP1000nuclear power main channelsprocessing facilities fixtures program.Decomposition properties and functions, the weight ratio method, advantages anddisadvantages of the fixture program, come to the best clamping scheme. By usingthree-dimensional software to draw apparatus, such as a V-shaped block, hydraulic cylinder,the support plate, the clamping device. Ensuring the entire folder specifically has an intuitivevisual effect. When modeling is completed, starting to design the individual sections, including the device material selection, stress analysis, stability, and reliability. Ensure thatthe entire folder specific to meet the expected demandAfter Stress Analysis on the jig apparatus completed, for the results of the analysis on thejig to optimize the structure, mainly for the quality, shape optimization, ensuring that theentire apparatus can be driven device drivers to meet the processing.After the completion of the work, began a two-dimensional mapping of the entire device,a general assembly drawings including fixtures, each part of the device parts diagram,technical requirements, and surface treatment. Through this work, this was the final designresults, servo processing methods to meet the various technical requirements, such as aone-time setup, the reign of measurement and automatic flip of the work piece. And adedicated processing apparatus together constitute the peculiar efficient processing apparatusAP1000Nuclear competent channels. |
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