Detection device and detection method for elastic characteristic value of small-scale dish-shaped gasket

Abstract

The invention discloses a detection device and a detection method for an elastic characteristic value of a small-scale dish-shaped gasket. The detection device is provided with a support fixed on a lower plate of a tension-compression test machine, wherein the support extends to the upper part of an upper pressing plate of the tension-compression test machine, with a bent portion, and the bent portion is provided with a dial gauge head testing the down-pressing size of the upper pressing plate of the tension-compression test machine; and a pedestal is placed on the lower plate of the tension-compression test machine, and a deformation standard block detecting a deflection amount of the tension-compression test machine is placed on the pedestal. When the elastic characteristic value of a small-scale dish-shaped gasket type part with a smaller deflection amount is measured, the detection device of the invention is disposed on the tension-compression test machine, and therefore the disadvantages that the self rigidity of the tension-compression test machine changes and the deflection amount cannot be measured accurately can be overcomed, the measuring accuracy and the repeated measuring precision of the elastic characteristic value of the dish-shaped gasket type part are assured, and the provided data is guaranteed to be accurate.

Description

technical field [0001] The invention belongs to the technical field of elasticity testing instruments, and in particular relates to a detection device and a detection method for the characteristic elasticity value of a small-sized disc washer. Background technique [0002] In product design, butterfly washers, a typical part, are often encountered. In some important use occasions, the characteristic elastic value under certain deformation needs to be given, because there is no special measuring tool, and the characteristic elastic value is generally measured on a spring tension and compression testing machine. (hereinafter referred to as the testing machine). However, in the specific measurement practice on the testing machine, it is found that the accurate measurement of the characteristic elastic value under a certain deformation has the following shortcomings: a) the insufficient stiffness of the testing machine itself causes the change of the elastic value caused by smal...

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Problems solved by technology

However, in the specific measurement practice on the testing machine, it is found that the accurate measurement of the characteristic elastic value under a certain deformation has the following shortcomings: a) the insufficient stiffness of the testing machine itself causes the change of the elastic value caused by small deformation; b) it is not easy to accurately determine the elastic value of the part on the testing machine Deformation value

It is precisely because of the existence of the above two points that it is difficult to accurately measure the characteristic elastic value of the butterfly washer, especially the accuracy and repeatability of the characteristic elastic value of the butterfly washer with small size and small deformation cannot be guaranteed, so that in production practice Unable to obtain accurate characteristic elastic value data

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