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要获得高精度的薄壁零件内孔,提高机床主轴、磨具系统的刚度和旋转精度是一个重要的方面。但是,工件夹紧方式对被加工工件精度的影响甚大。如采用通常的三爪卡盘夹紧这类零件的外圆进行磨削内孔,则往往由于受力不均引起工件变形而影响加工精度。液压等力端面夹紧磨具则避免了这一不足,磨出的工件内孔圆度能达到0.4微米,表面光洁度▽12。夹具的结构如图所示。夹具体1以磨头主轴8之短锥部作为定位基准,且固结一体。夹具体和定位套9采用H_7/k_6过渡配合。定位套单件加工时,内孔留有0.1毫米余量,待装入
To obtain high-precision thin-walled parts bore, to improve the machine tool spindle, abrasive system stiffness and rotational accuracy is an important aspect. However, the workpiece clamping method has a great impact on the accuracy of the workpiece being machined. Such as the use of the usual three-jaw chuck clamp such parts of the outer cylindrical grinding bore, often due to uneven force caused by workpiece deformation and affect the processing accuracy. Equal hydraulic end clamping grippers to avoid this problem, the workpiece can be worn out roundness of 0.4 microns, surface finish ▽ 12. Fixture structure as shown. Clamp body 1 with a short taper grinding head 8 as a reference, and the consolidation of one. Clamp body and positioning sleeve 9 using H_7 / k_6 transition fit. Positioning single set of processing, the hole left 0.1 millimeters margin to be loaded