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为了检验蜗杆和齿轮滚刀,常采用各种各样的专用仪器,如万能工具显微镜和投影仪等,但这些仪器均有一个共同的缺点,就是不能在机床上直接对加工工件进行测量,因而使生产时间拖长,特别在单件和小批生产中更是如此。某些机械制造厂虽然也采用了上置式量仪,但结构都比较复杂,而且只能检验模数M≤10mm的工件。为了克服蜗杆制品现有检验工具和方法的缺点,介绍一种万能杠杆机械上置式测量仪,该仪器可用于检验带有标准齿形角(20°)和M=3～20mm的蜗杆和齿轮滚刀。它是用单锥接触测量来实施的。仪器结构如图所示,它包括管形横梁2,其两端分布有可纵向移动的定心支座1和9,支座安装在被测制品10的基准轴颈11上。在检验齿轮滚刀时,定心
In order to test the worm and gear hob, often use a variety of special instruments, such as universal tool microscopes and projectors, but these instruments have a common shortcoming is that the workpiece can not be measured directly on the machine, and therefore To prolong the production time, especially in single-piece and small batch production is even more so. Although some mechanical manufacturers also used on the set-meter, but the structure is more complex, and can only test the modulus M ≤ 10mm of the workpiece. In order to overcome the shortcomings of existing testing tools and methods for worm products, a universal lever mechanical top-loading measuring instrument is introduced for testing worm and gear rollers with standard profile angle (20 °) and M = 3-20 mm Knife. It is implemented using single cone contact measurement. The structure of the apparatus is shown in the figure, which comprises a tubular cross-member 2 having longitudinally movable centering bearings 1 and 9 distributed at both ends thereof and mounted on a datum journal 11 of the test article 10. When testing the gear hob, centering