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在机器制造中,经常要求在机床加工过程中直接检查大型零件上孔的不同轴度和孔间距。为此目的而用的检具(专用的心棒、量规、检验套等)不能完全保证不同给定的尺寸有偏差。这里介绍的万能检具,据作者称,可以避免这类缺点。检具的轴向剖面示于图1a。图1b和1c所示为其Ⅰ—Ⅰ和Ⅱ—Ⅱ截面.在具有两个平端面的心棒1上装有将滚珠张开用的锥环2和支承环3、螺母4和装在弹性分隔圈6内的滚珠5。分隔圈的扭弯的一端卡在锥环2的切口里。在心棒1的环槽内装有保险环7。在图1上还示出了被检查孔21和与它同轴心线的被检查孔
In machine construction, it is often required that the different axialities and hole spacings of holes in large parts be checked directly during the machining of the machine. Gages used for this purpose (dedicated mandrel, gauges, test kits, etc.) can not fully guarantee the deviations of the given dimensions. The universal test fixture introduced here, according to the authors, avoids such shortcomings. The axial section of the gage is shown in Figure 1a. Figures 1b and 1c show the section I-I and II-II of the core 1. A mandrel 1 having two flat faces is provided with a conical ring 2 and a support ring 3 for opening the ball, a nut 4, Inside the ball 5. The distorted end of the spacer ring snaps into the cutout of cone 2. A ring 7 is provided in the ring groove of the mandrel 1. In FIG. 1, the inspected hole 21 and the inspected hole coaxial with it are also shown