Additionally, in some cases (as with polygon/autocollimator), only a limited number of angular positions could be tested which is typical using Moore's Precision Index or the circular scale as the entire process of calibration can hardly be automated.
Using the big number of autocollimators also is not convenient, as they must be placed at different (fixed) angular positions and must be supplied of coaxial attached rotary encoder or polygon for readings to be taken.
There are three servo-controlled axes on the RMT: (1) the X-axis along the table, (2) the Y-axis along the column, and (3) the Z-axis along the axis of the spindle, with a manually reconfigurable adjustment of the spindle's angular position.
Procurement the Contract Involves Providing Various Kinds of Spare Parts and Electrical Materials: Angular Position Transmitter; Solenoid Coils; O2 Measuring Probe; Reference Air Pump; Lubricants; and So On
Since tool runout is significantly affected by the eccentricity of tool-tool holder-spindle assembly, researchers relate tool runout to parallel eccentricity, using for the eccentricity definition two parameters, its magnitude and its angular position referring to a reference flute.