Study On Key Technologies Of Supporting Complicated Parts Fast, Flexible & Exact Machining And Its Application

Manufacturing is an important support of economy development to a country or area. Its development indicate synthesis strength to a country or area. Modern manufacturing face varieties, small batch producing, As one of important parts of them, for the difficult of install and process design to the complex part, its speediness and precision manufacture have become one of import subject to modern manufacturing technology.Using a kind of non-tradition workpiece install technology and initiative location Etstate memory -IL&SM put forward by Prof. Lee etc. it realizing credibility location an install to random shape complex part. Through seek-location element fix part on seek-location box, then after beforehand tightening, injecting low melting point alloy and freeze to hold the original install pose of the part, and provided uniformity hold power. When transform machining position, it can reserve the original installing location. At the same time, using seek-location box whose six side can be knocked down, the manufacturing of the workpart may dispart into six oriention. Its working process is similar on each oriention. So the process can realize standardization.Writer mainly study the key-point technology and application of support complex part fast, flexible and precision manufacture, including below four parts mainly:1, study the existing commercial software applied on engineering Writer analyzed and appraised the feature of CAD/CAM software incommon use, chose UG as software flat about complex part numeric manufacture, and study the second development tool of UG.2, study NC technology of support complex part high efficiency producing.In course of complex part manufacture practically, in order to achieving better quality, it is very important to choose reasonable process parameters and factors. Writer analyzed some process parameters affectmachining quality, including cutter, cutting dosage (federate, cutting deep, cutting width), advance and retract mode, finish machining row distance, cut mode, cut step excess and deviation etc. and synthesis analyzed the factors affect the choose of process parameters, conclude ideal choose scheme and rule. These process knowledge can more efficiently instruct processing plan design and NC programming3.research and develop CAPP/NC system ,based on UG flat and cut step character repositoryIntroduced CAPP system seamless integrate with unigraphic NX, the aim is to save the practice of machining parts by database for querying. We can achieve reasonable machining parameters corresponding to machining feature and complete manufacturig rapidly and precisely.4. high effective, flexible, multistage NC mill fixture application and developmentRegarding to the bottle-neck of the flexible fixture in manufacture, writer state high effective, flexible, multistage NC mill fixture application and development: the design of IL&SM general fixture and following fixture, and discuss common course of fixture design by real instance.