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During the maintenance of the CMM, Edward Coordinate Measuring Co. feels that the following problems should be noticed, which is also our experience and lessons in the process of using CMM.
During the maintenance of the CMM, Edward Coordinate Measuring Co. feels that the following problems should be noticed, which is also our experience and lessons in the process of using CMM.
1. Air pressure and quality The coordinate measuring machine generally adopts air bearing, and the minimum air pressure for working should be 0.45 MPa. The air pressure should be kept between 0.5-0.8 MPa during the work to ensure the good work of the coordinate measuring machine. Although sometimes the air pressure can be operated in a 0.45 MPa machine, it should be considered that the air pressure will be lost during the operation of X, Y and Z, so that the gap of the air floating block is small. If there are dust or fine particles in the air floating block, it will cause The guide rail is scratched, which seriously affects the measurement accuracy or causes the three-axis operation to be stuck.
2. Wiping of the guide rail and maintenance of the grating The guide rail must be kept clean. Wipe it with a cotton wool or silk cloth soaked with clean aviation gasoline or absolute ethanol. Pay special attention when loading and unloading parts to prevent bumping the guide rail.
The maintenance of the scale directly affects the accuracy of the reading, the Z-axis scale is exposed to the external environment, and the X and Y-direction scales are covered by the cover. Therefore, pay special attention to the Z-axis scale to prevent scratches. Wipe with a clean aviation petrol silk cloth and dry it.
3. Cleaning of the filter The filter should be cleaned regularly. When the filter element of the filter is found to be discolored, it must be cleaned. Remove the plastic cup, strainer, wash with a neutral detergent (we use carbon tetrachloride solution), and then dry with a clean gas. After reinstalling, measure the working pressure and adjust it if necessary.
4. Maintenance of the electronic control system The electronic control system is the core part of the coordinate measuring machine. It should be said to be relatively stable, but it should not be neglected to check and maintain it. For long-term use, some interfaces and inserts may be loose. Once we found out that after the power-on, the axis "Home" error alarm, the investigation found that the original interface is caused by loose.
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