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一、消除精密运动副偶件位移的爬动現象精密机床若出現精密运动副偶件座标位移量不稳定的所謂爬动現象,那就不能保証加工精度;在制造这种精密机床时,就无法测得傳动絲杠綜合传动誤差的准确值,也就无法作出校正尺的座标曲线。据我們对国外精密机床使用調整的經驗,以及在改装皮带車床为精密絲杠車床的經驗表明,要消除此种爬动現象必須做到:运动副偶件作均匀而連續的运动;不要使大质量的慣性作用傳递給运动副精密偶件并且潤滑良好。为此,我們在傳动鏈中(如图1)加入了摩擦盘3和分度盘9。在測定絲杠螺距綜合傳动誤差时,首先使机床反轉,拖板向床尾退回,此时定位肖10沿分度盘齿背滑行,随即把定位肖拉开到虛綫位置。当拖板退后到我們所要求的一段路程时,切断电路,使电动机停止
First, to eliminate the movement of the Deputy Vice-precision movement of the phenomenon of precision precision machine tool movement if the coordinates of the coordinates of the displacement of the so-called instability of the phenomenon of climbing, it can not guarantee the processing accuracy; in the manufacture of such precision machine tools, Unable to measure the exact value of the transmission screw integrated transmission error, it can not make the coordinates of the calibration curve. According to our experience in the use of foreign precision machine tools adjustment, as well as in the conversion of belt lathes for the precision screw lathe experience shows that to eliminate such crawling phenomenon must be done: the movement of the Deputy for uniform and continuous movement; do not make big The inertia of the mass is transmitted to the precision couplings of the kinematics and lubricates well. For this purpose, we add the friction plate 3 and the index plate 9 in the drive chain (Figure 1). In determining the lead screw pitch integrated transmission error, first of all, the machine reversal, the tow board back to the bed, this time positioning Xiao 10 along the indexing disc tooth back taxiing, then the positioning of Xiao opened to the dotted line position. When the pallet retreated to some distance we requested, the circuit was cut off and the motor stopped