Reciprocating Film Thickness Measuring Instrument
A measuring instrument, reciprocating technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve problems such as inability to accurately measure liquid film thickness, and achieve the effect of compact structure, simple structure, and convenient processing and manufacturing
Inactive Publication Date: 2018-08-21
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology
[0005] The invention provides a reciprocating film thickness measuring instrument to solve the problem that the liquid film thickness between friction pairs cannot be accurately measured under the condition of linear reciprocating motion.
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[0046] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the present invention will now be described with reference to the accompanying drawings.
[0047] Such as figure 1 As shown, the present invention proposes a reciprocating film thickness measuring instrument, and the reciprocating film thickness measuring instrument includes:
[0048] The oil cup 8 contains liquid, such as oil, to provide the liquid needed for the oil film for the reciprocating film thickness measuring instrument to observe the friction pair;
[0049] A transparent solid (such as glass or sapphire sheet 11) is arranged in the oil cup 8;
[0050] A motion system, connecting the transparent solid and driving the transparent solid to move linearly back and forth in the oil cup 8;
[0051] A spherical body (such as a steel ball 28) is arranged in the oil cup, and the top of the spherical body is pressed against the lower end surface of the tr...
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The invention provides a reciprocating-type film thickness measuring instrument. The reciprocating-type film thickness measuring instrument comprises an oil cup, a transparent solid arranged in the oil cup, a moving system connected with the transparent solid and used for driving the transparent solid to linearly move in a reciprocating manner in the oil cup; a spherical body arranged in the oil cup, wherein the top end of the spherical body is tightly abutted against the lower end surface of the transparent solid, and the spherical body and the transparent solid form a friction pair; a microscope arranged above the transparent solid; a loading system applying a load to the spherical body from bottom to top. The reciprocating-type film thickness measuring instrument is special for measuring the thickness of a liquid film between the friction pair under a linear reciprocating moving condition, the pressure and the speed of the friction pair and the temperature of a lubricant can be adjusted, and a plurality of working conditions can be simulated, so that the measuring precision is high, and the stability is good; in addition, the working condition of the friction pair can be conveniently adjusted, and the filming condition of the lubricant under various conditions can be measured.
Description
technical field [0001] The invention relates to a reciprocating film thickness measuring instrument, which is mainly suitable for measuring the film thickness of liquid lubricant in the contact area of friction pairs under the condition of reciprocating motion. Background technique [0002] Linear reciprocating motion is one of the most common motion forms of mechanisms in actual industrial production. For example, cylinders and pistons, sliding guide rails and sliders in engines are all typical linear reciprocating motion mechanisms. These kinematic mechanisms are often partly fixed, and the other part performs reciprocating linear motion. During the motion, contact and friction will inevitably occur between the two, resulting in wear on the contact surface. Once worn, the precision of kinematic joints will be reduced, which in turn will reduce the performance and life of the system. Therefore, the development of a linear reciprocating motion friction pair film thicknes...
Claims
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IPC IPC(8): G01B11/06
CPCG01B11/06
Inventor 肖华平刘书海王德国张勋
Owner CHINA UNIV OF PETROLEUM (BEIJING)