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近年来,随着建筑、路桥施工机械、采矿机械及起重机械的发 展,特长深孔油缸的应用日益增多,长度达几m、十几m甚至几十m,其长径比L/D远远大于20,保证特长深孔油缸的内孔精度和表面质量,有效加工方法之一就是采取强力珩磨。 1 所面临的主要问题。 （1）珩磨杆细长,刚性差,难以保证工件内外圆柱面的同轴度及内圆柱面母线直线度。 （2）油压大,油石磨损快。 （3）缸体内部观察、检测困难。 2 系统组成 如图1所示,系统由主轴箱、主轴（珩磨杆）、夹头、导向套、支承套和液压站等组成,主轴与主轴箱输出端万向联接,主轴旋转精度不受主轴箱旋转精度的影响。为了保证主轴轴线与工件轴线的同轴度,主轴与珩磨头采取刚性连接。工件一端由夹头夹持,另一端依靠托辊浮动支承。主轴的刚度和导向性则依靠直径尽量大
In recent years, with the development of construction, road and bridge construction machinery, mining machinery and hoisting machinery, the application of deep deep hole oil cylinder is increasing day by day, the length is several meters, more than ten meters or even tens of meters, and its aspect ratio L / D is far Much greater than 20, to ensure the expertise deep hole bore hole precision and surface quality, one of the effective processing methods is to take strong honing. 1 The main problems faced. (1) honing rod slender, poor rigidity, it is difficult to ensure the coaxiality of the cylindrical surface of the workpiece inside and outside cylindrical straightness. (2) hydraulic pressure, whetstone wear fast. (3) cylinder internal observation, testing difficulties. 2 system consists of the main frame, spindle (honing rod), chuck, guide sleeve, support sleeve and hydraulic station and other components, the spindle and the output of the spindle box universal joint, the spindle rotation accuracy from the spindle Effect of box rotation accuracy. In order to ensure the axis of the spindle and the coaxial axis of the workpiece, the spindle and the honing head to take a rigid connection. One end of the workpiece by the chuck holding the other end of the support roller floating support. The rigidity and orientation of the spindle depend on the diameter as large as possible