Rotational inertia test method
A technology of moment of inertia and test method, applied in the field of measurement, can solve problems such as large difference between calculation results and actual values, out-of-tolerance non-processing dimensions, and complex installation structure, achieving high measurement efficiency and measurement accuracy, low friction resistance, The effect of high transmission efficiency
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Embodiment 1
[0041] The formula for calculating the moment of inertia is Wherein, Jx is moment of inertia, and the application is simplified to J; This application is simplified to K; ∑m z (F e ) is the resultant torque, which is simplified as M in this application.
[0042] A method for testing moment of inertia, comprising the steps of:
[0043] Step 1: Determine the range of inertia: Calculate the equivalent moment of inertia of several commonly used assemblies to be measured to obtain a range of inertia.
[0044] Step 2: Design the standard inertia disk 12: take the maximum value, the minimum value and several point values in the middle of the inertia range, and design and manufacture the torus-shaped standard inertia disk 12 according to these inertia values; the standard inertia disk 12 Determination of the value According to the theoretical value or estimated value of the tested assembly, design and manufacture standard inertial discs 12 at equal intervals of 50% to 200% of ...
Embodiment 2
[0063] The difference between this embodiment and Embodiment 1 is that in step 5, if the inertia of the measured assembly is small, an appropriate standard inertia disk can be selected as an additional disk of the measured assembly for amplified measurement, and the total The moment of inertia of the measured assembly can be obtained by subtracting the moment of inertia of the standard inertia disk as an additional disk from the moment of inertia.
[0064] In the actual production design, the inertia value of the tested assembly is relatively large, and of course it is relatively small. If the estimated inertia value of the tested assembly is relatively large, remove the standard inertia plate and directly place the measured The assembly can be installed on the moment of inertia measuring device for measurement; if the estimated inertia value of the measured assembly is small, it can be measured by zoom-in measurement, so that the measured data can be more accurate. With such ...
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