Article 15313

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Zverovshchikov Aleksandr Evgen'evich, Candidate of engineering sciences, associate professor, sub-department of mechanical engineering, Penza State University (40 Krasnaya street, Penza, Russia), 

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Background. Pieces of complicated three-dimensional configuration made of polymer materials are usually produced by casting method or die forging that are accompanied by appearance of remnants of gating systems or casting material on work-piece surface. Debugging or defect avoidance during the process of formation leads to a significant increase in the cost of technological outfit. For this reason waste removal from polymer work-pieces after castings or die forging is an intensive working operation and its powering is of current interest. Centrifugal planet three-axis machining is one of the most productive technologies of deseaming motorization. The research objective is to work out technologies of effective waste removal from polymer work-pieces of small masses and sizes.
Materials and methods. Comparison between obtained theoretical results and test data is drawn; concepts of
engineering mechanics, continua mechanics, heat engineering, mathematical theory of experiment are used. Liquid nitrogen refrigerant is used. Experimental samples are made of nitrile-rubber latex.
Results. Mechanisms of usable and reject workpieces output depending on basic technological factors of centrifugal planet threeaxis machining are studied. Designing methods that allow to implement the technology of clearing machining of polymer work-pieces with unitary dosed supply of refrigerant coolant are offered. Conditions for a group of small process work-pieces are optimized.
Conclusions. Principles of realization of technology options of centrifugal planet three-axis machining for deseaming of work-pieces of small masses made of polymer materials at low temperatures are worked out. They allow to reduce the period of machining cycle to 45–120 seconds. 

Key words

deseaming, planet centrifugal treatment, polymer material, optimization of operating schedules. 

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Дата создания: 28.08.2014 14:04
Дата обновления: 29.08.2014 10:42