CN104198369B - Slide rolling friction performance experiment table - Google Patents

Slide rolling friction performance experiment table Download PDF

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Publication number
CN104198369B
CN104198369B CN201410462391.9A CN201410462391A CN104198369B CN 104198369 B CN104198369 B CN 104198369B CN 201410462391 A CN201410462391 A CN 201410462391A CN 104198369 B CN104198369 B CN 104198369B
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China
Prior art keywords
electro spindle
test block
inclination
vertical
cover plate
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CN201410462391.9A
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Chinese (zh)
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CN104198369A (en
Inventor
王家序
何涛
蒲伟
朱东
周广武
韩彦峰
周青华
张莹
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四川大学
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Priority to CN201410462391.9A priority Critical patent/CN104198369B/en
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Abstract

The present invention is a kind of slide rolling friction performance experiment table, comprises vertical electro spindle, inclination electro spindle, upper cover plate, air-bearing, force measuring structure, sensor Light Electrical components and parts and system; Upper cover plate is horizontally disposed with, and is supported by air-bearing; Upper cover plate bottom is connected with inclination electro spindle, and inclination electro spindle axle head is connected with the first test block that is spherical or roller shape; Vertical electro spindle axle head is connected with discoidal second test block; The surface contact of the first test block and the second test block; Force measuring structure measures the horizontal direction power that inclination electro spindle passes to upper cover plate; The rotating speed of vertical electro spindle and inclination electro spindle measured by speed pickup, and pressure between the first test block and the second test block measured by pressure transducer.The present invention be intended to for the engineering fields such as machinery, Aeronautics and Astronautics provide a kind of can roll contact condition to key components and parts in equipment power transmission and motion transform sliding friction, wear and tear and scientific approach that the tribological property such as lubrication is studied and technological means.

Description

Slide rolling friction performance experiment table

Technical field

The present invention relates to a kind of experiment table, particularly relate to and a kind of to roll in contact the features such as lubricating oil film shape, thickness for measurement mechanical transmission parts are sliding, observe microscopic appearance, the polishing scratch profile of contact interface, analyze the Surface Wear of contact, measure the slide rolling friction performance experiment table of contact friction force etc.

Background technology

In mechanism transmission design research, friction and wear tester is widely used in the lubrication and friction situation of probing into friction pair, but, in most of friction wear testing machine, motion between sample is simple slip, the friction and wear on interface is measured, the various performance of assessment material and reliability with this.But the parts of many transferring energies and motion, such as gear, tappet, rolling bearing and some hydraulic drives, work under relative rolling and sliding combined state, the linear velocity of two contact component contact points is different, be in slide and roll contact condition, its operating mode is more complicated far beyond simple slip, and thus the surface fracture form of material is also different.

Summary of the invention

The technical problem to be solved in the present invention is: provide the slide rolling friction performance experiment table that a kind of friction, wear and lubricate situation can rolling contact condition parts to sliding is studied.

In order to solve the problem, the technical scheme adopted is: slide rolling friction performance experiment table comprises vertical electro spindle, inclination electro spindle, upper cover plate, air-bearing, force measuring structure, speed pickup and pressure transducer; Upper cover plate is horizontally disposed with, and is supported by air-bearing; Upper cover plate bottom is connected with inclination electro spindle, and inclination electro spindle axle head is connected with the first test block that is spherical or roller shape; Vertical electro spindle is fixedly installed, and vertical electro spindle axle head is connected with discoidal second test block; The surface contact of the first test block and the second test block; Force measuring structure measures the horizontal direction power that inclination electro spindle passes to upper cover plate; The rotating speed of vertical electro spindle and inclination electro spindle measured by speed pickup, and pressure between the first test block and the second test block measured by pressure transducer.

Further: above the second test block, be provided with microscope.

Further: slide rolling friction performance experiment table comprises vertical angle adjustment structure, vertical angle adjustment structure regulates the angle on inclination electro spindle and the second test block surface.

Further: slide rolling friction performance experiment table comprises level angle adjustment structure, level angle adjustment structure can make inclination electro spindle horizontal hunting.

Further: upper cover plate comprises horizontal slip structure, inclination electro spindle and horizontal slip anatomical connectivity, horizontal slip structure is by regulating the distance of inclination electro spindle position adjustments first test block and the second test block center.

Further: slide rolling friction performance experiment table comprises vertical sliding motion structure and electric cylinder, vertical electro spindle and vertical sliding motion anatomical connectivity, electric cylinder supports vertical electro spindle.

The invention has the beneficial effects as follows: slide rolling friction performance experiment table of the present invention can simulate high speed, low speed, different sliding friction and lubrication situation of rolling surface in contact under the operating modes such as ratio, liquid lubrication, solid lubrication, carries out the study mechanism of Micro Lub wearing and tearing and elastohydrodynamic lubrication.

Accompanying drawing explanation

Fig. 1 is slide rolling friction performance experiment table front view;

Fig. 2 is slide rolling friction performance experiment table side view;

Fig. 3 is the first test block and the second test block relative position schematic diagram;

Fig. 4 is horizontal and vertical angle adjustment mechanism schematic diagram one;

Fig. 5 is horizontal and vertical angle adjustment mechanism schematic diagram two;

Fig. 6 is rolling disc structural representation;

Be labeled as in figure: upper cover plate 1, air-bearing 2, force measuring structure 3, testing table casing 4, vertical sliding motion structure 5, A-frame 6, electric cylinder 7, horizontal slip structure 8, microscope 9, inclination electro spindle 10, first test block 11, second test block 12, vertical electro spindle 13, vertical angle adjustment structure 14, rotary sleeve 14-1, turning axle 14-2, stator 14-3, long arc-shaped holes one 14-5, level angle adjustment structure 15, shaft collar 15-1, long arc-shaped holes two 15-2, rolling disc 15-3, axis of guide 15-4, pilot hole 15-5.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is further described.

As shown in Figure 1 and Figure 2, slide rolling friction performance experiment table comprises vertical electro spindle 13, inclination electro spindle 10, upper cover plate 1, air-bearing 2, force measuring structure 3, speed pickup and pressure transducer; Upper cover plate 1 is horizontally disposed with, and is supported by air-bearing 2; Upper cover plate 1 bottom is connected with inclination electro spindle 10, and inclination electro spindle 10 axle head is connected with the first test block 11 that is spherical or roller shape; Vertical electro spindle 13 axle head is connected with discoidal second test block 12; The surface contact of the first test block 11 and the second test block 12; Force measuring structure 3 measures the horizontal direction power that inclination electro spindle 10 passes to upper cover plate 1; The rotating speed of vertical electro spindle 13 and inclination electro spindle 10 measured by speed pickup, and pressure between the first test block 11 and the second test block 12 measured by pressure transducer.

Air-bearing 2 is prior art products, its principle is input pressure gas in bear box, make the axle of air-bearing 2 be in suspended state, the axle of air-bearing 2 can move relative to trace with housing, and moving direction can be perpendicular to any direction of air-bearing 2 axis.

When carrying out friction testing, two electro spindle rotate, and make that the first test block 11 is relative with the second test block 12 to roll; Because of the first test block different from the second test block speed (velocity reversal and/or vary in size), the two is relative sliding again.The friction force (direction is horizontal direction) of the first test block 11 and the second test block 12 passes to inclination electro spindle 10, and then pass to upper cover plate 1 and make upper cover plate 1 pair of force measuring structure 3 produce pressure, force measuring structure 3 records this power.Because upper cover plate is supported by air-bearing 2, air-bearing 2 can not apply the power of any horizontal direction to upper cover plate 1, therefore can not affect friction measurement precision.Because the axle of air-bearing 2 and housing can be perpendicular to any direction of air-bearing 2 axis in relative movement direction, therefore the no matter direction of the first test block 11 and the second test block 12 why direction, air-bearing 2 all can not apply the power of any horizontal direction by upper cover plate 1, can not affect friction measurement precision.

Force measuring structure 3 should arrange two pieces, measure the power of two mutually perpendicular directions, namely the size of making a concerted effort of two power is the friction force size of the first test block 11 and the second test block 12, and namely the resultant direction of two power is the direction of the first test block 11 and the second test block 12.During survey friction force, general first test block 11 is positioned at above the second test block 12.

By the research friction force that records of force measuring structure 3 and two test specimen first test specimens 7 and pressure dependence between the second test specimen 9 speed and two test specimens.Test specimen after experiment can observe the sliding feature such as micro interface pattern, polishing scratch profile of rolling contact and producing by supporting atomic force microscopy mirror device, analyze the surface abrasion amount of contact, and then test specimen slide rolling friction performance is studied.

In order to can study the lubricating oil film between two test blocks, be provided with microscope 9 above the second test block 12, obtain oil film thickness feature to observe, the second test block 12 is made up of transparent material.When studying lubricating oil film, the first test block 11 should be positioned at below the second test block 12, and meanwhile, the second test block 12 is made up of transparent material, and the second test block 12 can be avoided like this to stop microscope light.Between two test specimens, add lubricating oil, gather oil film situation between two test specimens by microscope 9 and by computer for analysis, can the lubrication circumstances between two test specimens be analyzed.Second test block 12 can be sapphire disk or glass disc.

As previously mentioned, when surveying friction force, general first test block 11 is positioned at above the second test block 12; When studying lubricating oil film, the first test block 11 should be positioned at below the second test block 12.Conveniently switch this two states, slide rolling friction performance experiment table comprises vertical angle adjustment structure 14, and vertical angle adjustment structure 14 regulates the angle on inclination electro spindle 10 and the second test block 12 surface.Inclination electro spindle 10 angular range is preferably by being inclined upwardly 45 degree to downward-sloping 45 degree.Friction measurement is carried out during downward-sloping 45 degree of usual inclination electro spindle 10; Inclination electro spindle 10 be inclined upwardly 45 degree time carry out lubricating oil film research.

Further: slide rolling friction performance experiment table comprises level angle adjustment structure 15, level angle adjustment structure 15 can make inclination electro spindle 10 horizontal hunting.Level angle adjustment structure 15 can make the first test block 11 be positioned at diverse location on the second test block 12 as shown in Figure 3, simultaneously the first test block 11 linear velocity direction and the second test block 12 linear velocity direction different (having angle theta).Such slide rolling friction performance experiment table can complete the bullet stream that Entrainment Velocity and Contact Ellipse axle form an angle and test.

Vertical angle adjustment structure 14 and level angle adjustment structure 15 can have multiple embodiment.Be a kind of embodiment schematic diagram as shown in Figures 4 to 6, vertical angle adjustment structure 14 comprises rotary sleeve 14-1 and turning axle 14-2, rotary sleeve 14-1 is connected with upper cover plate 1, turning axle 14-2 is connected with level angle adjustment structure 15 and inserts rotary sleeve 14-1, rotary sleeve 14-1 end is connected with the shaft collar 14-4 with long arc-shaped holes one 14-5, turning axle 14-2 end is connected with stator 14-3, and shaft collar 14-4 and stator 14-3 is fixed together through long arc-shaped holes one 14-5 by bolt.Vertical angle adjustment structure 14 Principles of Regulation are as follows: unclamp bolt, and turning axle 14-2 rotates and inclination electro spindle 10 can be driven to rotate in vertical plane together with level adjusting structure 15; Adjust fastening bolt after angle, shaft collar 14-4 and stator 14-3 is fixed together and plays locking effect, avoids that inclination electro spindle 10 is unexpected to be rotated.

Level angle adjustment structure 15 comprises shaft collar 15-1 and rolling disc 15-3, shaft collar 15-1 is connected with turning axle 14-2 and shaft collar 15-1 is provided with axis of guide 15-4, rolling disc 15-3 is connected with inclination electro spindle 10 and rolling disc 15-3 is provided with pilot hole 15-5 and long arc-shaped holes two 15-2, axis of guide 15-4 inserts pilot hole 15-5, and bolt inserts long arc-shaped holes two 15-2 and is fixed together by shaft collar 15-1 and rolling disc 15-3.Level angle adjustment structure 15 Principles of Regulation are as follows: unclamp bolt, and rolling disc 15-3 can drive inclination electro spindle 10 horizontal direction to rotate, and axis of guide 15-4 inserts pilot hole 15-5 and plays rotary steering effect; Fastening bolt after whole good angle, shaft collar 15-1 and rolling disc 15-3 is fixed together and plays locking effect, avoids the unexpected rotation of inclination electro spindle 10.

During by above-mentioned vertical angle adjustment structure 14 and level angle adjustment structure 15 adjusting angle, after can bolt being unclamped, manually directly rotate inclination electro spindle, and then clamping screw; Also, after can unclamping bolt, inclination electro spindle is driven to rotate, to reach labour-saving object by turbine and worm structure etc.

In order to the first test block 11 and the second test block 12 position can be adjusted further, upper cover plate 1 comprises horizontal slip structure 8, inclination electro spindle 10 is connected with horizontal slip structure 8, and horizontal slip structure 8 is by regulating the distance of inclination electro spindle 10 position adjustments first test block 11 and the second test block 12 center.Horizontal slip structure 8 can be illustrated in figure 1 conventional oat tail groove structure, and inclination electro spindle 10 to connect on swallow-tail form slide block and slides in cell body and can change the first test block 11 position.

The first test block 11 Level Change is caused after the Angulation changes of inclination electro spindle 10 vertical direction.In order to also ensure that when the first test block 11 Level Change the second test block 12 contacts with the first test block 11, and for the ease of changing the pressure between the second test block 12 and the first test block 11, slide rolling friction performance experiment table comprises vertical sliding motion structure 5 and electric cylinder 7, vertical electro spindle 13 is connected with vertical sliding motion structure 5, and electric cylinder 7 supports vertical electro spindle 13.Vertical sliding motion structure 5 can be conventional oat tail groove structure, and vertical electro spindle 13 connection sliding block slides and can change the second test block height in dovetail groove.Electric cylinder 7 can either move up and down for vertical electro spindle 13 pressure providing power can load between change second test block 12 and the first test block 11 to vertical electro spindle 13 again.

Claims (7)

1. slide rolling friction performance experiment table, is characterized in that: comprise vertical electro spindle (13), inclination electro spindle (10), upper cover plate (1), air-bearing (2), force measuring structure (3), vertical angle adjustment structure (14), level angle adjustment structure (15), speed pickup and pressure transducer; Upper cover plate (1) is horizontally disposed with, and is supported by air-bearing (2); Upper cover plate (1) bottom is connected with inclination electro spindle (10), and inclination electro spindle (10) axle head is connected with the first test block (11) that is spherical or roller shape; Vertical electro spindle (13) axle head is connected with discoidal second test block (12); The surface contact of the first test block (11) and the second test block (12); Force measuring structure (3) measures the horizontal direction power that inclination electro spindle (10) passes to upper cover plate (1); The rotating speed of vertical electro spindle (13) and inclination electro spindle (10) measured by speed pickup, and pressure between the first test block (11) and the second test block (12) measured by pressure transducer; The angle that vertical angle adjustment structure (14) regulates inclination electro spindle (10) surperficial with the second test block (12); Level angle adjustment structure (15) can make inclination electro spindle (10) horizontal hunting.
2. slide rolling friction performance experiment table according to claim 1, is characterized in that: the second test block (12) top is provided with microscope (9).
3. slide rolling friction performance experiment table according to claim 1, is characterized in that: the angle on inclination electro spindle (10) and the second test block (12) surface is 0 to 45 to spend.
4. slide rolling friction performance experiment table according to claim 1, it is characterized in that: upper cover plate (1) comprises horizontal slip structure (8), inclination electro spindle (10) is connected with horizontal slip structure (8), the distance of horizontal slip structure (8) by regulating inclination electro spindle (10) position to regulate the first test block (11) and the second test block (12) center.
5. slide rolling friction performance experiment table according to claim 4, it is characterized in that: comprise vertical sliding motion structure (5) and electric cylinder (7), vertical electro spindle (13) is connected with vertical sliding motion structure (5), and electric cylinder (7) supports vertical electro spindle (13).
6. slide rolling friction performance experiment table according to claim 5, it is characterized in that: vertical angle adjustment structure (14) comprises rotary sleeve (14-1) and turning axle (14-2), rotary sleeve (14-1) is connected with upper cover plate (1), turning axle (14-2) is connected with level angle adjustment structure (15) and inserts rotary sleeve (14-1), rotary sleeve (14-1) end is connected with the shaft collar (14-4) with long arc-shaped holes one (14-5), turning axle (14-2) end is connected with stator (14-3), shaft collar (14-4) and stator (14-3) are fixed together through long arc-shaped holes one (14-5) by bolt.
7. slide rolling friction performance experiment table according to claim 6, it is characterized in that: level angle adjustment structure (15) comprises shaft collar (15-1) and rolling disc (15-3), shaft collar (15-1) is connected with turning axle (14-2) and shaft collar (15-1) is provided with the axis of guide (15-4), rolling disc (15-3) is connected with inclination electro spindle (10) and rolling disc (15-3) is provided with pilot hole (15-5) and long arc-shaped holes two (15-2), the axis of guide (15-4) inserts pilot hole (15-5), bolt inserts long arc-shaped holes two (15-2) and shaft collar (15-1) and rolling disc (15-3) is fixed together.
CN201410462391.9A 2014-09-11 2014-09-11 Slide rolling friction performance experiment table CN104198369B (en)

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Publication number Priority date Publication date Assignee Title
CN104990873B (en) * 2015-06-22 2017-11-28 清华大学 The method that on-line measurement lubricates interface friction chemical property
CN106018148B (en) * 2016-07-28 2018-10-02 中航工业哈尔滨轴承有限公司 A kind of high-speed friction tester
CN107101877B (en) * 2017-06-22 2019-07-16 长安大学 A kind of comprehensive geotechnical engineering test platform of complex slopes geologic model test
CN107991169B (en) * 2017-12-12 2019-11-05 湖北工程学院 A kind of slide rolling friction performance experiment table

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CN1789964A (en) * 2005-12-31 2006-06-21 大连海事大学 Reciprocating high-temperature high-load friction wear test method and apparatus
CN2854566Y (en) * 2005-12-31 2007-01-03 大连海事大学 Friction, wear-out testing equipment for parts of cylinder piston ring
CN202471536U (en) * 2012-02-28 2012-10-03 杭州电子科技大学 Device for measuring abrasion loss and friction coefficient of high-speed rolling interface roller
CN103344553A (en) * 2013-07-01 2013-10-09 燕山大学 High-speed rolling contact fatigue testing machine
CN203405388U (en) * 2013-06-23 2014-01-22 合肥工业大学 Table-type friction-wear tester for annular block

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Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
CN1789964A (en) * 2005-12-31 2006-06-21 大连海事大学 Reciprocating high-temperature high-load friction wear test method and apparatus
CN2854566Y (en) * 2005-12-31 2007-01-03 大连海事大学 Friction, wear-out testing equipment for parts of cylinder piston ring
CN202471536U (en) * 2012-02-28 2012-10-03 杭州电子科技大学 Device for measuring abrasion loss and friction coefficient of high-speed rolling interface roller
CN203405388U (en) * 2013-06-23 2014-01-22 合肥工业大学 Table-type friction-wear tester for annular block
CN103344553A (en) * 2013-07-01 2013-10-09 燕山大学 High-speed rolling contact fatigue testing machine

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