A test method for oil seal radial force

Abstract

The invention discloses an oil seal radial force test method, and provides an oil seal radial force test device and an oil seal seal ring; the test device includes a support seat to be tested and a test shaft, and the test shaft is fixed to the test shaft. On the support base, a positioning structure is arranged between the support base to be tested and the test shaft, the positioning structure includes a first screw hole array, a second screw hole array and a positioning group, and the first screw hole array includes several first screw hole arrays A screw hole, the first screw hole is distributed on the support seat to be tested in the form of an array, the second screw hole array includes a plurality of second screw holes, and the second screw hole is distributed in the form of an array On the test shaft and corresponding to the first screw hole, the positioning group includes several positioning screws, and the positioning screws are threadedly connected with the first screw hole and the second screw hole. The invention provides an oil seal radial force testing method with simple operation, wide measuring range and high measuring precision.

Description

technical field [0001] The invention relates to the technical field of oil seal radial force testing, in particular to an oil seal radial force testing method. Background technique [0002] The radial force of an oil seal is a key parameter to characterize its sealing performance and service life. Selecting an oil seal with a suitable radial contact force is an important basis for structural optimization. Therefore, the measurement of the radial force of an oil seal is particularly important. The current method of testing the radial force of the oil seal basically encapsulates the oil to be tested on the test shaft, and the test shaft is fixed on two half shafts, one of which is fixed and the other half shaft is a displacement sensor. A force sensor is installed on the fixed half shaft. The core element of the sensor is a strain gauge. The measured deformation of the strain gauge is converted into a force value to obtain the radial force of the oil seal. In this way, the me...

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Problems solved by technology

In this way, the method of only installing a force sensor on the fixed half shaft for measurement cannot fully obtain the measurement data of the radial force of the oil seal, resulting in low measurement accuracy

And the existing oil seal radial force testing device cannot conveniently measure oil seals with different diameters

Scholars at home and abroad are also constantly exploring the issue of controlling the shaft diameter of the oil seal. For example, CY Lee proposed to use a hollow sealed shaft sleeve in the article "Simulation and experimentation on the contact width and pressure distribution of lipseals" (2006). Internal pressure is applied to adjust the shaft diameter, and strain gauges are used to measure the change in shaft diameter. Although this method ensures the integrity of the shaft sleeve, the structure is complex and the measurement range is limited.

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