The Static And Dynamic Characteristics Of Gas Spindle Are Studies And The Structure Are Designed

In this paper, the gas spindle is regarded as research object. The static anddynamic characteristics of radial dynamic bearings, the characteristics of staticbearings and theories of the structure design are deeply studied. The outcomes of thecontributions can be summarized as follows:1. On the basis of the hydrostatics and continuous equation, the law is studiesabout the static and dynamic characteristics and stability of radial dynamic bearingsof the gas spindle. Furthermore, the axis tracing curves are analyzed, and the rang ofthe critical parameter of the axis motioning when lost stabilization occurs and thelaw between axis trace and bearing clearance are acquired.2. The mechanical model of gas bearings is set up. The dynamic response ofthe gas spindle are studies over a relatively wide range of rotating speed bynumerical analytic method, and the time histories are obtained under working andnon-working conditions. Furthermore, the dynamic response resulting from outerdisturbing are studies.3. After the research about the characteristics of static bearings of gas spindle, acomputational method of the structure design of static bearings is put forward.4. The best working point of the gas static bearings of gas spindle is acquiredby simulating the carrying capacity and rigidity of the gas static bearings.5. A plan of the structure design of the gas spindle on the gas dynamic andstatic bearings is put forward.The achievements stated above will greatly enrich the theory of design andmanufacturing of gas dynamic and gas static bearings, they will also providetheoretic references for domestic manufacturers to design and maintain the highspeed gas spindles, and have the important engineering significance.