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由于缺少有效的将砂带导引入内孔机构，使目前砂带磨削无法普遍应用于内回转表面的加工。为此在分析了现有的砂带磨削装置的基础上提出一种新型的砂带空间转向内孔导引原理，并根据该原理设计了三种砂带导引入内孔机构，这些机构都采用按照一定位置关系空间布局的导向元件，将砂带由孔外沿工件轴线方向导入内孔后转向，使之沿着与切削表面回转母线垂直的方向进入磨削区并以同样方式导出孔外，从而满足厂砂带的平稳导带要求，实现了内孔的砂带磨削。
Due to the lack of effective introduction of the belt into the bore, the current belt grinding can not be applied to the inner surface of the rotary machining. Based on the analysis of the existing belt grinding device, a new type of guide principle of the inner space of the belt to the space steering is proposed. According to this principle, three kinds of belt guide bore mechanisms are designed, Adopt the guide element which is arranged according to the spatial relationship of the certain position and guides the belt from the outer side of the hole to the inner hole along the axis of the workpiece and turns to make it follow the vertical direction of the rotating surface of the cutting surface to enter the grinding zone and lead out of the hole in the same way , So as to meet the requirements of the smooth belt of the factory belt and realize the belt grinding of the inner hole.