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How to use measuring instruments on machining centers

Every time we debug a machine tool, we will use measuring tools, and the most common one is calibration.
The use of calibration tables on horizontal machining centers and lathes requires a little more attention, because the way the calibration tables are placed has changed.
On the vertical machining center, the calibration is installed vertically, whether it is sucked on the protective cover of the spindle with a magnetic base or placed in the cutter head, the direction of gravity has not changed, so the measurement result will not be changed. As a result, it is affected.
But on horizontal machining centers and lathes, if the magnetic base is installed on the main shaft, when the main shaft rotates, the direction of gravity will also change, which will cause slight deformation of the calibration clamp bar, and the more the calibration will be separated from the magnetic base. The farther, the more obvious the phenomenon of deformation.
When the direction of gravity changes, the center of gravity will also change accordingly. When the center of gravity is unstable, the measurement results cannot truthfully reflect the current situation.
On a horizontal machining center, the rotation speed of the calibration table on the spindle will also affect the measurement results, because centrifugal force will also cause deviations in the measurement.
In order to eliminate these adverse effects, it is recommended to use coaxial calibration. You can find the obvious difference from the video below.

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