在加工螺旋角时 ,可在几分钟内准确调整万能铣床的纵拖板 ,而不是增加度数。如图 1所示 ,用划针延长机器的“0”线至横拖板的端部。在标记这条“0”线后 ,在平行于“0”线的一侧适当位置处划 1条“B”线。当纵拖板处于水平位置时 ,用千分尺测出“A”距离并记下这个读数。然后根 Instead of increasing the number of degrees, you can fine-tune the vertical mop of a universal milling machine within a few minutes while machining the helix angle. As shown in Figure 1, extend the “0” line of the machine to the end of the tractor with a scriber. After marking this “0” line, draw a “B” line at an appropriate position on the side parallel to the “0” line. When the carriage is in the horizontal position, measure the “A” distance with a micrometer and note this reading. Then root