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1.用一个专用的量具,可以测量外锥的小端直径B。专用量具由以下三部分组成(图1):两个直径为d的滚柱1,它们由螺钉紧固在夹板2上,两块夹板像铰链似地与手柄3相连接。测量时的装置如图1所示。量得尺寸y后,则 B=y-d(1+ctg(90°-α)/2),式中,锥体的斜角α为已知。2.用图2所示的专用量仪,既可以测量内锥大端直径,又可以测量外锥小端直径。量仪的测量平面上有两个钢球1,与被测量锥体的表面相接触,左面的钢球,相应于被测量锥体的尺寸,在仪器上调整并固定其位置。右面钢球的下部连着可作平行移动的拖板,拖板的位移量,相应于被检尺寸
1. With a dedicated measuring tool, you can measure the outer diameter of the outer cone B. The special measuring device consists of three parts (Fig. 1): two rollers 1 of diameter d which are fastened to the clamping plate 2 by means of screws and which are hingedly connected to the handle 3. Measurement of the device shown in Figure 1. After measuring the size y, then B = y-d (1 + ctg (90 ° -α) / 2), where the bevel angle α is known. 2 with the special instrument shown in Figure 2, both the inner diameter of the cone can be measured, but also small cone diameter can be measured. There are two steel balls 1 on the measuring plane of the measuring instrument. In contact with the surface of the cone to be measured, the ball on the left corresponds to the size of the cone to be measured and is adjusted and fixed on the instrument. The lower part of the right steel ball attached to the parallel displacement of the carriage, carriage displacement, corresponding to the size of the seized