In order to maintain the accuracy and reliability of the measuring tool, in addition to correct use, it is necessary to do a good job of maintenance and maintenance of the measuring tool.
    1.When measuring parts on the machine tool, it is necessary to wait for the parts to stop completely, otherwise the measuring surface of the measuring tool will not only lose accuracy due to premature wear, but also cause accidents;
    2.Before measurement, the measuring surface of the measuring tool and the measured surface of the part should be wiped clean, so as not to affect the measurement accuracy due to the existence of dirt. Precision measuring tools such as vernier calipers, dial gauges and dial gauges are used to measure forging blanks or with abrasives(Such as emery and so on)The surface is wrong, which is easy to make the measurement surface wear quickly and lose accuracy;
    3.Measuring tools in the process of use, do not and tools, cutting tools such as files, hammers, turning tools and drills stacked together, avoid collision measuring tools. Also do not casually put on the machine tool, avoid the vibration of the machine tool to make the measuring tool fall down and damage. In particular, the vernier caliper, etc., should be placed in a special box to avoid deformation of the ruler body;
    4.Measuring tools are measuring tools and can never be used as substitutes for other tools. For example, it is wrong to take a vernier caliper to mark, take a percentage ruler as a small hammer, take a steel ruler as a screwdriver screw, and use a steel ruler to clean up chips. It is also wrong to take the measuring tool as a toy, such as waving or shaking the percentage ruler in the hand at will, and it is easy to lose the precision of the measuring tool;

    5.The temperature has a great impact on the measurement results, and the precision measurement of the parts must make the parts and measuring tools in20℃In the case of measurement. Generally, it can be measured at room temperature, but the temperature of the workpiece and the measuring tool must be consistent, otherwise, due to the characteristics of thermal expansion and contraction of the metal material, the measurement results are inaccurate. The temperature also has a great impact on the accuracy of the measuring tool, and the measuring tool should not be placed in the sun or on the headbox, because the temperature of the measuring tool will not be the correct size. Do not place precision measuring tools in heat sources(Such as electric furnace, heat exchanger, etc)Near, so as not to make the measuring tool heat deformation and lose accuracy.

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