Research on Automatic Non-Magnetic Three-Axis Rotary Table

Research on Automatic Non-Magnetic Three-Axis Rotary Table
　　Three-axis rotary table is a simulation equipment which can turn in three dimensions. It is used for simulating the movement of a missile,fish torpedo and self-guided aero craft,and testing the navigation system, control system of them. Therefore,it is such a pivotal equipment for testing the performance of a missile,fish torpedo and self-guided aero-craft that playing a momentous part in research and development on these productsThe automatic three-axis rotary table researched on this paper is overall non-magnetic. The distortion of the magnetic field caused by the rotary table is not more than 7nT, when it works in a magnetic field. It can achieve 360-degree continuous rotary or magnet lifter cyclical swing according to the input law and accurately stop in a designated location. The automatic non-magnetic three-axis rotary table is a special equipment for emulating, testing and identifying the performance of the fish torpedo sensor in a uniform magnetic fieldAn in-depth research and analysis has been done on the automatic non-magnetic three-axis rotary table in this paper.First of all, the author http://www.999magnet.com/ pointed out the key points in design of the rotary table, and detailedly analyzed, calculated the non-magnetic requirements of the table by some magnetic theory.
　　Then, the author summarized some principles for designing a non-magnetic mechanical structure and raised a new non-magnetic long-distance mechanical -hydraulic drive and servo control plan according to the working environment requirements ,precision requirements and the principles,The author also comprehensively presented the overall plan of the automatic three-axis rotary table and its control system, hydraulic system principle. Systematically described the method how to achieve, introduced the mechanical structure of each parts in detailIn the designing process, magnet lifter  a series of measures has been taken to limit the table’s magnetism strictly, such as: used non-magnetic material for manufacturing, employed a non-magnetic hydraulic conductive rotary joint and non-magnetic electricity conductive rotary joint, designed a new non-magnetic mechanism hydraulic valve, used a non-magnetic angular displacement grating for measuring.Finally, the author magnet lifter  calculated the distortion caused by rotary table in a uniform magnetic field, and computed the stiffness and strength of the octagon frame and U-shaped frame by COSMOS Works and analyzed all precision of the rotary table.