Lubricant film thickness measuring instrument

Abstract

The invention relates to a lubricant film thickness measuring instrument, which consists of a spindle system, a loading system, a balanced system, a supporting system and a film thickness measuring system, wherein a balance hook is added with weights to freely balance two ends of a coupling spindle; certain loads are added on the weights so that a loading ball and a balance ball contact a disk sheet under contact pressure; a rotating motor drives a rotating spindle and the loading ball to rotate; a driving motor drives a spindle and the disk sheet to rotate; the loading ball, the rotating spindle and a rotating spindle sleeve can rotate freely around a stressed small shaft; the frictional force generated between the loading ball and the disk sheet makes the rotating spindle sleeve move; the movement of the rotating spindle sleeve drives a pull-pressure sensor; the frictional force between the loading ball and the disk sheet can be known according to an output signal of the pull-pressure sensor; when a lubricant film is formed between the loading ball and the disk sheet, a microscope captures contact area interference images generated by the changes of the film thickness; and the thickness of the lubricant film can be known through analysis. The lubricant film thickness measuring instrument has the characteristics of accurate measurement accuracy and high stability.

Description

technical field [0001] The invention relates to a measuring instrument, in particular to a lubricant film thickness measuring instrument under high contact pressure and high temperature conditions. Background technique [0002] High pressure and heavy load working conditions are unavoidable harsh working conditions in the development process of aviation, heavy industry, advanced manufacturing equipment and other fields. At present, many equipments work under high pressure and heavy load conditions. For example, the gears and bearings of heavy equipment such as mines and petroleum usually bear huge loads. The bearings in aero-engines usually work under high pressure, high temperature and high-speed rotation. Extremely severe working conditions will lead to a sharp reduction in the life of the lubricating material, the ability to maintain the accuracy of the kinematic pair and the ability to operate stably, and often accompanied by catastrophic accidents due to overheating beh...

AI Technical Summary

Problems solved by technology

However, most of them can only study the lubrication characteristics under low contact pressure and low temperature conditions, and the measurement accuracy and stability of instruments that can be applied under high contact pressure conditions are not high.

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