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管道划线器的作用是,可以准确地在管道上划出相交线,以便在主管上开孔。划线器由定心器、底座、圆盘、旋转尺及滑动划针等组成。旋转尺上有刻度,依据刻度移动滑动架,可以调整圆的半径。划线时,由底盘和定心器定位,旋转尺绕轴套旋转,滑动划针随着被划弧面垂直滑动,就能规则地划出圆的轨迹,见图1。它的使用方法如下:1.先按所划圆的半径,根据旋转尺上的刻度,调整定心器与滑动划针尖的距离,待调整后将滑动架固定。
The role of the pipe scribe is to accurately intersect the pipe so that the hole can be made in the main pipe. The scribe consists of a centering device, a base, a disk, a rotary ruler, and a sliding scriber. There is a scale on the rotary ruler, and the radius of the circle can be adjusted by moving the slide frame according to the scale. When the line is crossed, the chassis and the centering device are positioned, and the rotating ruler rotates around the sleeve. When the sliding Scriber slides vertically as the arc is drawn, the circular path can be regularly drawn, as shown in FIG. 1 . Its use is as follows: 1. First according to the radius of the circle, according to the scale on the rotary ruler, adjust the distance between the centering device and the sliding slicing needle tip. After adjustment, the sliding frame is fixed.