Higher-pair contact variable sliding-rolling ratio oil film thickness and friction simultaneous measurement simulation device

Abstract

The invention belongs to the higher-pair point / line contact elastohydrodynamic oil film thickness and friction measurement field and relates to a high-stress contact variable sliding-rolling ratio oil film thickness and friction and simultaneous measurement simulation device. The main body structure of the device includes a supporting platform, a disc driving device, a ball driving, loading and rotating device, sensor fixing and adjustment devices, an image acquisition device, a translation device and a speed measuring device; the upper side of the supporting platform is provided with the disc driving device near the left edge of the supporting platform; the disc driving device is used for driving a glass disc to rotate through a disc driving motor; the ball driving, loading and rotating device is located behind the disc driving device; the sensor fixing and adjustment devices are fixedly arranged at the front end and rear end of the right edge of the translation device; and the image acquisition device is fixedly arranged near the rear part of the left edge of the translation device and is used for acquiring the movement information of the glass disc and a steel ball. The device of the invention has the advantages of simple main structure, ingenious design, accurate measurement result, simple and convenient operation, scientific principles, convenient and flexible use, high practicability, good application environment and bright market prospect.

Description

Technical field: [0001] The invention belongs to the field of high secondary point / line contact elastohydrodynamic oil film thickness and friction measurement, and relates to an experimental simulation device for simultaneous measurement of film thickness and friction force, in particular to a high-stress contact variable slip-to-roll ratio oil film thickness and friction force and At the same time, the simulation device is measured, and the contact between the rolling body and the bearing raceway is equivalent to the contact between the rolling body and the plane. Tribological data between bearing raceways. Background technique: [0002] A large number of mechanical parts in the project are in high-pair contact. Under this contact form, the parts produce elastic deformation at the contact point, and then the lubrication state is dominated by elastohydrodynamic lubrication (elastic hydrodynamic lubrication). Research on the mechanism of elastohydrodynamic lubrication can gu...

AI Technical Summary

Problems solved by technology

However, due to the limitation of measurement technology, the research on the simultaneous measurement of oil film thickness and friction force is limited to pure sliding conditions, and the measurement of oil film thickness and friction force under different slip-roll ratios is mostly independent measurement, lacking the simultaneous measurement. Technical and Experimental Data

The measurement of friction force of lubricating oil film in high-high pair contact is mainly carried out by gravitational testing machine. In the prior art, the Chinese patent application number CN2736771Y discloses a comprehensive performance evaluation testing machine for lubricating oil, which includes a power unit, a friction pair, Oil storage device, loading device, fixed shaft, and the friction pair includes rotor and stator. This patent uses weights to load, and utilizes the principle of leverage to make sliding friction between the stator and rotor at the friction point, and record the final oil temperature through the temperature control device test. The utility model is simple in design, easy to operate, and easy to carry. However, the patent still has the following defects: one is to evaluate the anti-friction resistance of lubricating oil through wear marks. The accuracy of the grinding performance is not high. There is no accurate standard to judge the size of the wear marks, and the wear marks themselves are also irregular. Different people have different judgments on the wear marks, which will lead to personnel errors. Second, every test After one time, it is necessary to replace and repair the friction pair, which increases manpower, material and financial resources. Third, the temperature is easily affected by the external environment, making the accuracy of the measurement results not high. Fourth, the utility model cannot obtain the test results in the first time and needs to be calculated. ; More importantly, the measuring device cannot measure the lubricating oil film thickness

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