What matters should be paid attention to when installing the grating master ruler for the image measuring instrument?

What matters should be paid attention to when installing the grating master ruler for the image measuring instrument?

1. When installing the main ruler, for example, when installing a grating above 1.5M, it cannot be installed at both ends like a bridge type, and it needs to be supported in the entire main ruler body. 2. After installing the base, it is better to use clamps to clamp the midpoint or several points of the main body of the ruler. 3. If the fixing clip cannot be installed, it is better to use glass glue to stick the main body of the grating ruler, so that the bottom ruler and the main ruler are firmly fixed. 4. Installation of the reading head of linear scale linear displacement sensor. When installing the reading head, first make sure that the bottom surface of the reading head meets the installation requirements, and then install the reading head. The installation method is similar to the main ruler. Later, adjust the reading head to ensure The parallelism between the reading head and the main scale of the grating is within 0.1mm, and the gap between the reading head and the main scale is controlled within 1-1.5mm. 5. The limit device of the linear scale linear displacement sensor. After all the linear displacement sensors are installed, the limit device must be installed on the machine tool rail to prevent the reading head from hitting the two ends of the main ruler. When the machine tool moves, the scale is damaged. In addition, when purchasing a linear displacement sensor, users should try to use a grating ruler that is about 100mm larger than the machine tool processing size to allow a certain margin. 6. Inspection of the linear displacement sensor of the grating ruler. After installing the linear displacement sensor of the grating, you can open the digital display meter, move the workbench, observe whether the count of the digital display meter is normal, select the reference position on the machine, and then move the working point back and forth to At the selected position, the reading of the digital display should be the same or return to zero. In addition, you can also use a dial indicator or a dial indicator to adjust the dial indicator and the digital display to zero at the same time or remember the initial data. After several round trips, return to the original position to observe whether the data on the digital display is consistent with the indicator of the dial indicator. Through the above work, the image measuring instrument has completed the installation of the linear displacement sensor of the grating ruler. However, for the general machine tool processing environment, there are more iron filings, cutting fluid and oil stains. Therefore, the sensor should be attached with a protective cover. The design of the protective cover is determined by expanding a certain amount of space according to the shape and cross-section of the sensor. The protective cover is usually sealed with rubber to make it waterproof and oil-resistant.