СОВЕРШЕНСТВОВАНИЕ ТЕХНОЛОГИЧЕСКОГО ПРОЦЕССА МЕХАНИЧЕСКОЙ ОБРАБОТКИ С РАЗРАБОТКОЙ КОНСТРУКЦИИ РЕЗЦА ДЛЯ ЧИСТОВОГО ТОЧЕНИЯ

Abstract

The technological process of mechanical processing of composite materials is considered. A brief description of composite materials, their physical and mechanical properties, and their structure is studied. The features of processing of glass-reinforced plastics carbon fiber reinforced plastics, organic plastics and bioplastics are reflected. The processing of composites will be difficult due to reinforcement schemes, different fiber directions and types of continuous fiber laying. All this leads to certain requirements that will be imposed on the tool and its wear rate. Tool wear consists of different types of wear – adhesive, fatigue, abrasive-mechanical, chemical. When carrying out the cutting process, it is necessary to take into account the direction of reinforcement, and therefore the direction of processing of the cutting tool. Depending on the state of the surface layer, the cutting tool required for mechanical processing is considered. The justification of the need to improve the design of the cutting tool is given. The design of the cutting head has been developed for the cutting process. It consists of roughing and finishing cutters. The values of the design parameters of the tool head are considered and selected. The optimal cutting depth for the finishing tool is determined. The geometric parameters of the finishing tool are selected experimentally, the purpose of which is to provide the required quality of processing. Using experiments, the values of the angle of deviation of the main cutting edge from the horizontal plane are found. The design of the finishing tool is described in detail, which largely eliminates the disadvantages of processing. The appearance of a leading crack when turning with a finishing tool is excluded.