Apr 15,2022
Hardware tools measuring tools specific daily use
During the measurement, in order to obtain the ideal degree, in addition to controlling the measurement environment factors, the general staff must pay attention to the use and maintenance of the hardware tools and measuring tools themselves. If used improperly, measurement errors will occur. Inadequate maintenance will damage its accuracy and affect product quality.
First, the choice of measuring tools
Determine the specifications of the measuring tool according to the size and requirements of the workpiece, including the measuring range, indicating value range, graduation value, etc. It is selected according to the dimensional tolerance of the workpiece; the measuring tool, the workpiece tolerance is small, the accuracy of the measuring tool should be high, the tolerance is large, and the accuracy requirement should be low, and the limit error is generally 1/10 of the measurement tolerance (low precision) - 1/3 (high precision) . Select the gage according to the allowable uncertainty of the gage.
2. Preparing the measuring tool before use
Before starting the measurement, confirm whether the hardware tool is reset to zero; check whether the measuring surface of the hardware tool is corroded, worn or scratched; first clean the burrs, oil stains or slag on the measuring surface of the workpiece; wipe it with a cleaning cloth or dust-free paper ;The record book needs to be inspected regularly and corrected again if necessary; the hardware tools and instruments to be used are arranged in an appropriate position, and cannot be placed overlapping; the fragile hardware tools and measuring tools should be spread on the workbench with soft flannel.