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圆度刻线机是获得各种高精度度盘和光柵的主要设备。目前国内使用的绝大多数是民主德国OFD圆刻机,共规格主要有TKFS00,TKF1000。TKF500的最大分度间隔是1度,最小分度值为10秒,TKF1000的最大分度间隔为30分(有附加间歇装置的也可达1度)最小分度值是5秒。圆度刻线机的精确分度主要是依靠精密蜗轮付获得的。TKF500的蜗轮上有1080齿,蜗杆每转一周蜗轮转动20分,TKF1000的蜗轮上
Roundness scorer is to obtain a variety of high-precision disk and grating the main equipment. At present, the vast majority of the domestic use of the German Democratic OFD circular engraving machine, a total of specifications are TKFS00, TKF1000. TKF500 maximum division interval is 1 degree, the smallest division of 10 seconds, TKF1000 maximum division interval of 30 points (with additional intermittent devices up to 1 degree) minimum scale is 5 seconds. The precise indexing of circularity reticle machine is mainly obtained by the precision worm gear. TKF500 has 1080 teeth on the worm, worm worm rotates 20 minutes per revolution, TKF1000 on the worm