CN104198369A - Sliding and rolling friction property experiment table - Google Patents
Sliding and rolling friction property experiment table Download PDFInfo
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- CN104198369A CN104198369A CN201410462391.9A CN201410462391A CN104198369A CN 104198369 A CN104198369 A CN 104198369A CN 201410462391 A CN201410462391 A CN 201410462391A CN 104198369 A CN104198369 A CN 104198369A
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Abstract
The invention discloses a sliding and rolling friction property experiment table which comprises optical and electromechanical elements such as a vertical electric spindle, an inclined electric spindle, an upper cover plate, an air floating bearing, a force measuring structure and a sensor, and a system, wherein the upper cover plate is horizontally arranged and is supported by the air floating bearing; the lower part of the upper cover plate is connected with the inclined electric spindle; a first spherical or roller-shaped testing part is connected with the shaft end of the inclined electric spindle; a second disc-shaped testing part is connected with the shaft end of the vertical electric spindle; the surface of the first testing part contacts that of the second testing part; the force measuring structure is used for measuring the force which is applied to the upper cover plate from the inclined electric spindle in the horizontal direction; the speed sensor is used for measuring the rotation speed of the vertical electric spindle and the inclined electric spindle; the pressure sensor is used for measuring the pressure between the first testing part and the second testing part. The invention aims at providing a scientific method and a technical means for studying the friction property such as friction, abrasion and lubrication of key parts in sliding and rolling contact states in equipment power conduction and movement transformation.
Description
Technical field
The present invention relates to a kind of experiment table, relate in particular to a kind of features such as lubricating oil film shape, thickness of rolling in contact for measurement mechanical transmission parts cunning, observe microscopic appearance, the polishing scratch profile of contact interface, analyze the Surface Wear of contact, the slide rolling friction of measurement contact friction force etc. is learned performance experiment table.
Background technology
In mechanical drive design studies, friction and wear tester is widely used in probing into the lubrication and friction situation of friction pair, but, in most of friction wear testing machines, motion between sample is simple slip, with this, measure the friction and wear on interface, various performances and the reliability of assessment material.Yet the parts of many transferring energies and motion, for example gear, tappet, rolling bearing and some hydrostatic transmission parts, relatively under rolling and sliding combined state, to work, the linear velocity of two contact component contact points is different, in the sliding contact condition that rolls, its operating mode is more complicated far beyond simple slip, thereby 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 a kind of and can roll to sliding the friction of contact condition parts, the slide rolling friction performance experiment table that wear and lubricate situation is studied.
For addressing the above problem the technical scheme of employing, be: slide rolling friction is learned performance experiment table and comprised vertical electric main shaft, inclination electricity main shaft, upper cover plate, air-bearing, force measuring structure, speed pickup and pressure transducer; Upper cover plate is horizontally disposed with, and supports by air-bearing; Upper cover plate bottom is connected with the electric main shaft that tilts, and the electric main-axis end that tilts is connected with the first test block of spherical or roller shape; Vertical electric main shaft is fixedly installed, and vertical electric main-axis end is connected with discoidal the 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 electric main shaft passes to upper cover plate; Speed pickup is measured vertical electric main shaft and the rotating speed of the electric main shaft that tilts, and pressure transducer is measured pressure between the first test block and the second test block.
Further: the second test block top is provided with microscope.
Further: slide rolling friction is learned performance experiment table and comprised vertical angle adjustment structure, and vertical angle adjustment structure regulates the angle on electric main shaft and the second test block surface.
Further: slide rolling friction is learned performance experiment table and comprised level angle adjustment structure, and level angle adjustment structure can make electric main shaft horizontal hunting.
Further: upper cover plate comprises horizontal slip structure, the electric main shaft that tilts is connected with horizontal slip structure, and horizontal slip structure regulates the distance at the first test block and the second test block center by the adjusting electric main spindle's that tilts.
Further: slide rolling friction is learned performance experiment table and comprised vertical slide construction and electric cylinder, and vertical electric main shaft is connected with vertical slide construction, and electric cylinder supports vertical electric main shaft.
The invention has the beneficial effects as follows: slide rolling friction of the present invention is learned performance experiment table can simulate high speed, low speed, different sliding friction and lubrication circumstances of rolling surface in contact under the operating modes such as ratio, liquid lubrication, solid lubrication, carries out the mechanism research of Micro Lub wearing and tearing and elastohydrodynamic lubrication.
Accompanying drawing explanation
Fig. 1 is that slide rolling friction is learned performance experiment table front view;
Fig. 2 is that slide rolling friction is learned 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;
In figure, be labeled as: upper cover plate 1, air-bearing 2, force measuring structure 3, testing table casing 4, vertical slide construction 5, A-frame 6, electric cylinder 7, horizontal slip structure 8, microscope 9, electric main shaft 10 tilts, the first test block 11, the second test block 12, vertical electric main shaft 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 electric main shaft 13, electric main shaft 10, upper cover plate 1, air-bearing 2, force measuring structure 3, speed pickup and pressure transducer tilt; Upper cover plate 1 is horizontally disposed with, and supports by air-bearing 2; Upper cover plate 1 bottom is connected with the electric main shaft 10 that tilts, and electric main shaft 10 axle heads that tilt are connected with the first test block 11 of spherical or roller shape; Vertical electric main shaft 13 axle heads are connected with discoidal the 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 electric main shaft 10 passes to upper cover plate 1; Speed pickup is measured the rotating speed of vertical electric main shaft 13 and the electric main shaft 10 that tilts, and pressure transducer is measured the first test block 11 and 12 pressure of the second test block.
Air-bearing 2 is prior art products, its principle is input pressure gas in bear box, make the axle of air-bearing 2 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.
While carrying out friction testing, two electric main shaft rotations, make the first test block 11 and the relative rolling of the second test block 12; Because of the first test block different from the second test block speed (velocity reversals and/or vary in size), the two is relative sliding again.The friction force of the first test block 11 and the second test block 12 (direction is horizontal direction) passes to electric main shaft 10, then passes to upper cover plate 1 and makes 1 pair of force measuring structure of upper cover plate 3 produce pressure, and force measuring structure 3 records this power.Because upper cover plate supports by air-bearing 2, air-bearing 2 can not apply to upper cover plate 1 power of any horizontal direction, therefore can not affect friction measurement precision.Because the axle of air-bearing 2 and the housing direction that can relatively move can be perpendicular to any direction of air-bearing 2 axis, therefore no matter the direction of the first test block 11 and the second test block 12 direction why, air-bearing 2 can upper cover plate 1 apply the power of any horizontal direction, can not affect friction measurement precision.
Force measuring structure 3 should arrange two, measure the power of two mutually perpendicular directions, 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 the resultant direction of two power is the direction of the first test block 11 and the second test block 12.While surveying friction force, general the first test block 11 is positioned at the second test block 12 tops.
Pressure dependence between the friction force recording by research force measuring structure 3 and two test specimen the first test specimens 7 and the second test specimen 9 speed and two test specimens.Test specimen after experiment can be observed the sliding features such as micro interface pattern that contact produces, polishing scratch profile of rolling by supporting atomic force microscopy mirror device, analyzes the surface abrasion amount of contact, and then test specimen slide rolling friction is learned performance and studied.
In order to study the lubricating oil film between two test blocks, the second test block 12 tops are provided with microscope 9, in order to observe, obtain oil film thickness feature, and the second test block 12 is made by transparent material.When lubricating oil film is studied, the first test block 11 should be positioned at the second test block 12 belows, and meanwhile, the second test block 12 is made by transparent material, can avoid like this second test block 12 to stop microscope light.Between two test specimens, add lubricating oil, by microscope 9, gather oil film situation between two test specimens and, also by computer for analysis, can analyze the lubrication circumstances between two test specimens.The second test block 12 can be sapphire disk or glass disc.
As previously mentioned, while surveying friction force, general the first test block 11 is positioned at the second test block 12 tops; When lubricating oil film is studied, the first test block 11 should be positioned at the second test block 12 belows.For convenient this two states that switches, slide rolling friction is learned performance experiment table and is comprised vertical angle adjustment structure 14, and vertical angle adjustment structure 14 regulates the angle on electric main shaft 10 and the second test block 12 surfaces.Electric main shaft 10 angular ranges that tilt are preferably spent to downward-sloping 45 by 45 degree that are inclined upwardly.When the electric main shaft 10 downward-sloping 45 of inclination is spent conventionally, carry out friction measurement; The electric main shaft 10 that tilts is inclined upwardly and 45 is lubricated oil film research while spending.
Further: slide rolling friction is learned performance experiment table and comprised level angle adjustment structure 15, and level angle adjustment structure 15 can make electric main shaft 10 horizontal huntings.Level angle adjustment structure 15 can make the first test block 11 be positioned at the diverse location on the second test block 12 as shown in Figure 3, simultaneously the first test block 11 linear velocity directions and the second test block 12 linear velocity directions different (having angle theta).Slide rolling friction is learned performance experiment table and can be completed Entrainment Velocity and test with the bullet stream that Contact Ellipse axle forms an angle like this.
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 bolt is fixed together shaft collar 14-4 and stator 14-3 through long arc-shaped holes one 14-5.Vertical angle adjustment structure 14 Principles of Regulation are as follows: unclamp bolt, turning axle 14-2 rotation can drive electric main shaft 10 to rotate in vertical plane together with level adjusting structure 15; Adjust fastening bolt after angle, shaft collar 14-4 and stator 14-3 are fixed together and play locking effect, avoid the unexpected rotation of electric main shaft 10.
Level angle adjustment structure 15 comprises shaft collar 15-1 and rolling disc 15-3, shaft collar 15-1 be connected with turning axle 14-2 and shaft collar 15-1 on be provided with axis of guide 15-4, rolling disc 15-3 be connected with the electric main shaft 10 that tilts and rolling disc 15-3 on be 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 shaft collar 15-1 and rolling disc 15-3 are fixed together.Level angle adjustment structure 15 Principles of Regulation are as follows: unclamp bolt, rolling disc 15-3 can drive electric main shaft 10 horizontal direction rotations, 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 are fixed together and play locking effect, avoid the unexpected rotation of electric main shaft 10.
During by above-mentioned vertical angle adjustment structure 14 and level angle adjustment structure 15 adjusting angle, can unclamp after bolt, manually directly rotate electric main shaft and then clamping screw; Also can unclamp after bolt, by electric main shafts of driving inclination such as turbine and worm structures, rotate, to reach labour-saving object.
In order further to adjust the first test block 11 and the second test block 12 positions, upper cover plate 1 comprises horizontal slip structure 8, the electric main shaft 10 that tilts is connected with horizontal slip structure 8, and horizontal slip structure 8 is by the tilt distance at electric main shaft 10 position adjustments the first test blocks 11 and the second test block 12 centers of adjusting.Horizontal slip structure 8 can be illustrated in figure 1 conventional oat tail groove structure, and the electric main shaft 10 that tilts connects slip on swallow-tail form slide block and in cell body can change the first test block 11 positions.
After the Angulation changes of electric main shaft 10 vertical direction that tilt, cause the first test block 11 Level Changes.In order also to guarantee that the second test block 12 contacts with the first test block 11 when the first test block 11 Level Change, and for the ease of changing the pressure of 11 of the second test block 12 and the first test blocks, slide rolling friction is learned performance experiment table and is comprised vertical slide construction 5 and electric cylinder 7, vertical electric main shaft 13 is connected with vertical slide construction 5, and electric cylinder 7 supports vertical electric main shaft 13.Vertical slide construction 5 can be conventional oat tail groove structure, and vertical electric main shaft 13 connection sliding blocks slide and can change the second test block height in dovetail groove.Electric cylinder 7 can either provide power can load to change to vertical electric main shaft 13 pressure of 11 of the second test block 12 and the first test blocks again for vertical electric main shaft 13 moves up and down.
Claims (7)
1. slide rolling friction is learned performance experiment table, it is characterized in that: comprise vertical electric main shaft (13), the electric main shaft (10) that tilts, 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 supports by air-bearing (2); Upper cover plate (1) bottom is connected with the electric main shaft (10) that tilts, and electric main shaft (10) axle head that tilts is connected with first test block (11) of spherical or roller shape; Vertical electric main shaft (13) axle head is connected with discoidal the 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 electric main shaft (10) passes to upper cover plate (1); Speed pickup is measured vertical electric main shaft (13) and the rotating speed of the electric main shaft (10) that tilts, and pressure transducer is measured pressure between the first test block (11) and the second test block (12); Vertical angle adjustment structure (14) regulates electric main shaft (10) angle surperficial with the second test block (12); Level angle adjustment structure (15) can make electric main shaft (10) horizontal hunting.
2. slide rolling friction according to claim 1 is learned performance experiment table, it is characterized in that: the second test block (12) top is provided with microscope (9).
3. slide rolling friction according to claim 1 is learned performance experiment table, it is characterized in that: the electric main shaft (10) that tilts is 0 to 45 degree with the angle on the second test block (12) surface.
4. slide rolling friction according to claim 1 is learned performance experiment table, it is characterized in that: upper cover plate (1) comprises horizontal slip structure (8), the electric main shaft (10) that tilts is connected with horizontal slip structure (8), and horizontal slip structure (8) is for regulating the distance at electric main shaft (10) position adjustments the first test block (11) and the second test block (12) center.
5. slide rolling friction according to claim 4 is learned performance experiment table, it is characterized in that: comprise vertical slide construction (5) and electric cylinder (7), vertical electric main shaft (13) is connected with vertical slide construction (5), and electric cylinder (7) supports vertical electric main shaft (13).
6. slide rolling friction according to claim 5 is learned performance experiment table, 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), bolt is fixed together shaft collar (14-4) and stator (14-3) through long arc-shaped holes one (14-5).
7. slide rolling friction according to claim 6 is learned performance experiment table, it is characterized in that: level angle adjustment structure (15) comprises shaft collar (15-1) and rolling disc (15-3), shaft collar (15-1) be connected with turning axle (14-2) and shaft collar (15-1) on be provided with the axis of guide (15-4), rolling disc (15-3) be connected with the electric main shaft (10) that tilts and rolling disc (15-3) on be 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) shaft collar (15-1) and rolling disc (15-3) is fixed together.
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| CN201410462391.9A CN104198369B (en) | 2014-09-11 | 2014-09-11 | Slide rolling friction performance experiment table |
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| CN201410462391.9A CN104198369B (en) | 2014-09-11 | 2014-09-11 | Slide rolling friction performance experiment table |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104990873A (en) * | 2015-06-22 | 2015-10-21 | 清华大学 | Method for online measuring friction chemical performance of lubricating interface |
| CN106018148A (en) * | 2016-07-28 | 2016-10-12 | 中航工业哈尔滨轴承有限公司 | High-speed tribology experimental apparatus |
| CN107101877A (en) * | 2017-06-22 | 2017-08-29 | 长安大学 | A kind of comprehensive Geotechnical Engineering test platform of complex slopes geologic model test |
| CN107817459A (en) * | 2017-11-24 | 2018-03-20 | 中国石油大学(北京) | Magnetic domain in-situ observation system during a kind of reciprocating friction |
| CN107991169A (en) * | 2017-12-12 | 2018-05-04 | 湖北工程学院 | A kind of slide rolling friction performance experiment table |
| CN108896478A (en) * | 2018-07-26 | 2018-11-27 | 西南交通大学 | Multi-functional finger friction test equipment |
| CN109060648A (en) * | 2018-08-28 | 2018-12-21 | 河南科技大学 | A kind of spheric granules coefficient of rolling friction measurement method |
| CN110160905A (en) * | 2019-06-24 | 2019-08-23 | 安徽理工大学 | A kind of variable working condition reciprocating friction and wear testing machine based on double freedom flexible hinge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107101877A (en) * | 2017-06-22 | 2017-08-29 | 长安大学 | A kind of comprehensive Geotechnical Engineering test platform of complex slopes geologic model test |
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| CN107817459B (en) * | 2017-11-24 | 2024-03-08 | 中国石油大学(北京) | Magnetic domain in-situ observation system in reciprocating friction process |
| CN107991169B (en) * | 2017-12-12 | 2019-11-05 | 湖北工程学院 | A kind of slide rolling friction performance experiment table |
| CN107991169A (en) * | 2017-12-12 | 2018-05-04 | 湖北工程学院 | A kind of slide rolling friction performance experiment table |
| CN108896478A (en) * | 2018-07-26 | 2018-11-27 | 西南交通大学 | Multi-functional finger friction test equipment |
| CN108896478B (en) * | 2018-07-26 | 2024-04-30 | 西南交通大学 | Multifunctional finger friction test equipment |
| CN109060648A (en) * | 2018-08-28 | 2018-12-21 | 河南科技大学 | A kind of spheric granules coefficient of rolling friction measurement method |
| CN109060648B (en) * | 2018-08-28 | 2021-02-05 | 河南科技大学 | Method for measuring rolling friction coefficient of spherical particles |
| CN110160905B (en) * | 2019-06-24 | 2023-11-28 | 安徽理工大学 | Variable working condition reciprocating friction wear testing machine based on double-freedom-degree flexible hinge |
| CN110160905A (en) * | 2019-06-24 | 2019-08-23 | 安徽理工大学 | A kind of variable working condition reciprocating friction and wear testing machine based on double freedom flexible hinge |
| CN110333157B (en) * | 2019-07-15 | 2022-02-15 | 北京工业大学 | A testing arrangement that is used for vice ball of ball to roll smooth frictional wear |
| CN110333157A (en) * | 2019-07-15 | 2019-10-15 | 北京工业大学 | A kind of test device for ball screw assembly, ball roll sliding friction abrasion |
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