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“多刃角度尺”是测量刀具前后角的量具。该量具的结构如图1所示,由有刻度的扇形板2、滑块量尺6与刻有Z数的弧板1组成。测量时将支承尺4放置在相邻齿尖上,滑块量尺6、基尺5勾住齿尖,分别贴在刀齿的前面或后面上,使其间无光隙,此时将紧固螺钉3固紧,在扇形板2的刻度上即可读出前面或后角值。由于如图所示的弧板1左端弧长短于半圆弧长,这样就出现了两个问题:一是弧板1左端不能标刻Z2的刻线,因而没有用它进行测
“Multi-blade angle ruler” is a measure of the tool before and after the angle of the gauge. The structure of the measuring device is shown in FIG. 1, which is composed of a scalloped sector plate 2, a slider gauge 6 and an arc plate 1 engraved with Z numbers. Measuring the support foot 4 placed on the adjacent tooth tip, the slider gauge 6, the base 5 hook tooth tip, respectively, affixed to the front or back of the tooth, so that there will be no gap between the time will be fastened The screw 3 is tightened to read the front or rear angle value on the scale of the sector plate 2. Since the left arc length of the arc plate 1 is shorter than the semicircular arc length as shown in the figure, two problems arise in this way. One is that the left end of the arc plate 1 can not be marked with the engraving line of Z2 and therefore it has not been measured