Precision turntable for machining or angle measurement on precision machine tools. Common optical turntable, digital turntable and ultra-precision face plate turntable. * Optical turntable: the spindle is equipped with glass or metal precision dial, the optical system will scale Subdivided, magnified, through the eyepiece or light screen to read the angle value.
2, digital turntable: turntable spindle with precision round grating or round induction synchronizer, by the digital display device to read the angle value. The accuracy of the above two precision turntables can be up to ± 1 .
3,ultra-precision face plate turntable: the use of a pair of precision on the research of 1440 teeth, 720 teeth or 360 teeth of the face plate positioning, the indexing accuracy of up to ± 0.01 "for precision angle measurement.