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Due to improper use of the instrument or failure to perform routine maintenance, various malfunctions occur, and axial errors are often encountered by many users. So how to detect the axial error of the instrument?
Axial error of the test instrument:
1. Calibrate the instrument to adjust the workbench so that the flat work surface and the axis of rotation of the spindle are exactly vertical.
2. Place the flat crystal or standard hemisphere on the outer table of the adjustable table to make the spherical probe contact with the flat crystal working surface or the top of the standard hemisphere (the same below, omitted), and make the sensor indication value at zero The swing around is minimal.
3. When the spindle rotates for 3 weeks, start the measurement and evaluate the roundness with the minimum area method as the verification result.
Increase the magnification step by step until it is 10000 times. Then adjust the radial position of the sensor so that the gyration radius of the trajectory of the probe is minimized.
4. The filter knob is set to 1~15 wave/rotation, the magnification knob is set to 1 000 times, and the force knob is set to measure the position of the middle instrument to measure the force. Install the shoulder bracket with a spherical probe on the sensor (if the instrument allows, the sensor can be mounted horizontally so that the probe is in direct contact with the flat working surface).