Study On The Key Technology Of Flexible Joint

With the development of science and technology, miniature systems are well used in fields of aviation, aerospace, engineering, physics, weapons. The miniaturization and lightweight become the trend in a modern weapon and spacecraft, while the restricting bottleneck of the process development is the manufacturing technology of micro and small structural parts. The flexible member is the key part in the inertial instrument, which is mainly used in the support of the rotor in the flexible gyroscope. It is an elastic bearing without friction. Rotor via a flexible joint and drive shaft is connected, it passed the driving torque of the motor and drives the rotor around the self shaft to rotate at a high speed, on the other hand also allows the rotor around the perpendicular to the rotational axis of two orthogonal axes direction. The inner flexible joint of the flexible rod is the main part of support and rotation, and has the features of small shape, complex structure, high machining accuracy, and so on.. The machining accuracy of the traditional decentralized operation process is difficult to guarantee, the rigidity consistency is poor, the finished rate is low, and the efficiency is lower.. In recent years, the combined machining technology has become in the field of machining a rapid development of advanced technology, is the field of mechanical processing is currently focused on the implementation of the processing methods of, it is in a machine tool integrated a variety of processes to achieve a fixture to complete parts all over most of the machining process, not only improve the processing efficiency, more avoid for multiple clamping in machining error. The turning and milling composite processing technology based on, for flexible joint processing in the presence of processing technology, to carry out study on processing technology of integration of flexible joint, through the calculation of cutting force, cutting process simulation and experimental verification of the proposed flexible joint and similar thin wall structure of precision machining process parameters selection, process arrangement, control machining precision processing method. The results show that the effectiveness of processing and processing of thin-walled tenuicollis.The main contents are as follows:(1) Flexible joint integration processing and process optimization, the advantage of using car milling compound machining technology, combined with the feature of the flexible joint structure, in a clamping clamping(or two), car, milling, boring, drilling and other processing method, complete all processing, its rigid structure and optimization of process method, on the premise of guarantee the quality of its processing, reduce the processing time, improve the machining efficiency.(2) Study on processing technology of flexible joint key structure of necking of thinwall structure, in order to boring cutting processing technology to ensure the neck arc processing quality, through the influence of cutting force theory calculation and finite element simulation of cutting process of cutting force on the thin-walled, occurring in the cutting process of material deformation and fracture failure of make qualitative and quantitative analysis, verify the boring cutting processing superiority in the narrow neck thinwalled processing.(3) Optimization of process parameters of flexible joint, to the position accuracy of the key structure of flexible joint, size precision, surface quality as the main research object, process of processing test and measurement, effects of processing factors on the processing quality, cutting parameters optimization process, so as to achieve the required processing quality requirements.(4) Application Research on processing technology of thin-walled structure, fundamental rules of cutting processing technology of thin neck summarized and applied to other structures of the thin-walled structure processing, focuses on the selection of cutting way, walking tool path planning and cutting parameters optimization to expand the application, for a millimeter thin wall structure, generally applicable to the machining methods are proposed in this paper.