介绍了一种实用且准确的空间导叶叶片的测绘方法。首先 ,根据导叶样品 ,测出导叶的各有关尺寸 ,作出外形图 ,然后去除外壳体 ,再保留一至两枚叶片 ,画等高线 ,测得叶片内外流线在等高线各点到中心线的半径尺寸 ,作出导叶的轴面投影图。接着 ,在叶片工作面的左侧 ,作一过导叶轴心线的垂直剖切面 ,与导叶内壳体外表面相交。测得叶片工作面一侧内、外流线上各点到垂直剖切面与导叶内壳体外表面各交点的弦长 ,并利用三角函数计算方法求得叶片工作面一侧内外流线上各点的坐标 ,据此作出叶片的内外流线展开图。最后 ,测得叶片各点的圆周厚度 Su,作出背面一侧的流线。用此方法 ,我们测绘了一批导叶样品 ,试制送样后 ,样品经客户检测 ,性能全部合格 ,得到了用户的认可 A practical and accurate method for the mapping of space vanes is introduced. First, according to the guide vane samples, measure the relevant dimensions of the guide vanes to make the outline drawing, and then remove the outer shell, and then retain one to two leaves, draw the contour lines, measuring the flow lines inside and outside the leaves at contour points to Centerline radius of the size of the blade to make the axial projection. Next, on the left side of the blade face, make a vertical section through the guide vane axis and intersect the outer surface of the inner shell of the guide vane. The chord length between each point on the side of outflow line and vertical cross section of the blade face and the outer surface of the inner shell of the guide vane was measured and the trigonometric method was used to calculate the chord length The coordinates of the points, according to which to make the blade inside and outside the streamline expansion plans. Finally, the circumferential thickness Su of each point of the blade is measured to make the streamline on the back side. With this method, we mapped a number of guide vane samples, trial sample delivery, the sample test by the customer, all the performance standards, has been recognized by the user