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How should the precision spring pressure test be done?sewing thimble company

source:Industry News    Popular:pogo pin for moilble phone     release time:2021-11-26 09:14:29     Article author:sznbone

  How should the precision spring pressure test be done?sewing thimble company(图1)

  Precision springs are used in many mechanical generations, so the pressure test is essential for springs. The spring pressure test is used to determine the tension and compression effects of the spring to ensure that it can operate normally in the machine. So today we Let me explain how the precision spring pressure test is and what the steps are.

  Steps of precision spring pressure test:

  1. Before the formal inspection of the precision spring, the precision spring is compressed once to the experimental load. When the test load is greater than the pressure and the load is heavier, the pressure and the load can be used as the test load, but the compression force is quite large. More than 1.5 times the constant pressure and load.

  2. Preparation before load detection: use a third-class dynamometer corresponding to the corresponding range or a weight with a precision of more than one to correct the load test machine to ensure that the precision of the test machine is not less than 1%; at the same time, use a block to correct the load The length reading error of the testing machine.

  3. The detection of the load of the precision spring pressed to the specified height: Place the gauge block with the same height as the specified height in the center of the pressure plate of the load tester, load the gauge block with a load similar to the nominal value of the pattern, and then lock the positioning screw or positioning Slightly, put the gauge block into the precision spring to be tested to adjust the zero position, Remove the weight of the precision spring, press the precision spring to the specified height, read the corresponding load, and modify the degree according to the error of the calibrated load testing machine.

  4. Press the upper pressure plate to release the precision spring to the position where the load tester predicts F0≈0.05F; record the initial reading F0 and the length of the load test, and then continue to load, so that the change in the reading predicted by the length reaches the mark A certain amount of deformation.


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