CN112485148A - Three-point type sliding-rolling contact fatigue wear testing machine - Google Patents
Three-point type sliding-rolling contact fatigue wear testing machine Download PDFInfo
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- CN112485148A CN112485148A CN202011374658.0A CN202011374658A CN112485148A CN 112485148 A CN112485148 A CN 112485148A CN 202011374658 A CN202011374658 A CN 202011374658A CN 112485148 A CN112485148 A CN 112485148A
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- 238000012360 testing method Methods 0.000 title claims abstract description 51
- 238000005096 rolling process Methods 0.000 title claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000001050 lubricating effect Effects 0.000 claims description 27
- 239000010687 lubricating oil Substances 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 7
- 238000010998 test method Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
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- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000009661 fatigue test Methods 0.000 description 5
- 238000011160 research Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
Abstract
The invention relates to a three-point sliding-rolling contact fatigue wear testing machine, which comprises a main loading roller arranged horizontally, the main loading roller is connected with the loading mechanism, a first loading roller and a second loading roller are respectively arranged at two sides below the main loading roller, the first loading roller and the second loading roller are arranged in parallel with the main loading roller, the connecting lines of the roller cores of the three groups of rollers are in a regular triangle shape, a clamping area for clamping a sample piece is formed between the roller bodies, the contact slip-roll ratios of the main loading roller, the first loading roller and the second loading roller to the sample piece are different, different loads are loaded to the sample through the main loading roller, the first loading roller, the second loading roller and the main loading roller are started to rotate, the contact slip-roll ratio with the sample is changed to meet the experimental requirements, the friction and wear test of the sample is implemented, the testing machine can effectively simulate the actual use working state of the rotating part, and the friction wear sample data of the obtained sample is more accurate and reliable.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to a three-point sliding-rolling contact fatigue wear testing machine.
Background
A miniature three-roller micro-pitting experimental instrument is a device for analyzing and researching the frictional wear performance of materials subjected to micro-pitting in different environments as the name suggests. The micropitting is caused by a general mechanism of rolling contact fatigue under a thin oil film, mixed lubrication condition, and is expressed by the formation of the micropits on the local roughness uneven surface. Under the working conditions of large load and high rotating speed, the components such as bearings, gears and the like with high transmission performance and high working precision are easily seriously damaged by rolling abrasion which takes micro-pitting corrosion as a main form. For bearings and gears, the mechanism of micro-pitting corrosion is very complex, and is related to many factors such as stress condition of materials, heat treatment, processing means, working environment, surface impurities, roughness and the like.
Although the research on the rolling fatigue wear problem related to the micro-pitting of the material has great significance for prolonging the service life of the machine part, at present, no complete theory or model exists internationally to explain the formation of the micro-pitting of the material, and no advanced tester is provided domestically to complete the corresponding rolling contact fatigue wear test. Therefore, the rolling contact fatigue test of the material is an important research content, and the design of a corresponding miniature three-roller micro-pitting tester is also of great significance.
The friction and wear test is particularly important for key supporting rolling components such as bearings, balls and the like, and is a key research object of many scientific research institutes and related enterprises, and the friction and wear test machine field of the rolling components, the rolling contact fatigue test machine field developed in China, and a novel three-point contact type strengthened rolling contact fatigue life test machine designed by published technical documents such as Shanghai university Zhongjingling and the like; a novel ball-and-column type high-speed rolling contact fatigue testing machine is developed by Song Baoyu of Harbin Industrial university; the four-ball fatigue testing machine developed and modified by Jinyongfu and the like. These models can better simulate a certain specific working condition and complete corresponding contact fatigue experiments to obtain relevant performance parameters of the material, however, the testing machine still has certain defects and use limitations under various working conditions.
1) The working condition can not be accurately simulated, the practicability of the test result is poor, if the four-ball tester is used for testing, the tested ball and the accompanied test ball are in rolling and sliding states and are not in accordance with the actual working condition, and the money roller test roller and the three-roller rolling contact fatigue tester can not make the drive roller drive the test roller to perform the rolling motion with the same rotating speed due to the fact that the drive roller can not be driven to perform the rolling motion with the same rotating speed by simply depending on the load under high rotating speed, so that the machine type can not accurately simulate the pure rolling contact fatigue working condition;
2) the test period is generally longer due to the limitation of test load and test speed; in a high-speed motion state, the traditional weight loading mode can generate jumping during loading, and a large error can be generated;
3) most contact fatigue testing machines mainly adopt a method of measuring a vibration signal of a test piece by an acceleration sensor when capturing rolling contact fatigue cracks, and the method can only make judgment when the test piece is largely peeled off, so that an initial fatigue failure state cannot be captured;
4) the online monitoring capability is not strong, most of the online monitoring devices only have the functions of automatic shutdown and automatic alarm, the detection signal is single, and the real-time change of each test parameter cannot be accurately detected.
Disclosure of Invention
The purpose of the invention is: the three-point sliding-rolling contact fatigue wear testing machine can simulate the actual working condition environment of a rolling part and improve the accuracy of the obtained friction wear test data.
In order to achieve the purpose, the invention adopts the technical scheme that:
a three-point sliding-rolling contact fatigue wear testing machine comprises a horizontally arranged main loading roller, wherein the main loading roller is connected with a loading mechanism, a first loading roller and a second loading roller are respectively arranged on two sides below the main loading roller, the first loading roller and the second loading roller are arranged in parallel with the main loading roller, roller core connecting lines of the three rollers are in a regular triangle shape, a clamping area for clamping a sample piece is formed between roller bodies, and the contact sliding-rolling ratios of the main loading roller, the first loading roller, the second loading roller and the sample piece are different.
The invention also has the following technical characteristics:
one end of the main loading roller is connected with a main driving mechanism, the first and second loading rollers are respectively connected with the respective first and second driving mechanisms, and the main loading roller and the first and second loading rollers have different rotating speeds.
The main loading roller and the peripheries of the first and second loading rollers are provided with a lubricating cavity, oil is injected into the lubricating cavity, a temperature detection unit is arranged in the lubricating cavity, an inlet and an outlet are arranged on the lubricating cavity, the inlet is communicated with the outlet of the oil feeding unit, and the lubricating oil with set temperature is led out from the outlet of the oil feeding unit.
The main loading roller is arranged on a sliding block, the sliding block is vertically arranged on a supporting body in a sliding mode, the sliding block is connected with a loading point of a loading lever, and a pressure loading mechanism is arranged on the loading lever.
The whole loading lever that is the strip bar form and one end is articulated to be set up on the supporter, the articulated shaft and the main loading roller parallel arrangement of loading lever, the detachable setting of loading weight is at the other end of loading lever.
The loading device is characterized in that a clamping notch is formed in the supporting body, the sliding block and four guide pillars in the clamping notch form sliding fit, the four guide pillars are vertically arranged, a loading guide pillar is arranged at the middle section of the loading lever, and the loading guide pillar is vertical and is connected with the upper end of the sliding block.
One side of the supporting body is provided with an accommodating chamber for accommodating the main loading roller, the first bearing roller and the second bearing roller, a cover plate is arranged at the opening position of the accommodating chamber, and the accommodating chamber and the cover plate form a lubricating chamber.
The bottom that holds the cavity is provided with waist shape hole, the vertical arrangement in waist shape hole length direction, main loading roller center is provided with the connecting axle, the connecting axle passes waist shape hole, be provided with sealed the pad on the connecting axle, sealed the pad supports with the bottom that holds the cavity at waist shape hole place and leans on, the connecting axle stretches out the tip that holds the cavity and passes through the shaft coupling and be connected with main driving motor's pivot.
The central ends of the first and second loading rollers are respectively provided with a connecting shaft, and the connecting shaft penetrates through the bottom of the accommodating chamber and is respectively connected with the first driving motor and the second driving motor through a coupler.
A miniature three-roller micro-pitting test method comprises the following steps:
the method comprises the following steps of firstly, manufacturing a sample piece into a cylindrical shape or a spherical shape, adapting to the sample pieces with different shapes by changing the shapes of a main loading roller, a first loading roller and a second loading roller, arranging the sample piece in a clamping area between the main loading roller and the first loading roller, wherein the main loading roller is arranged in a lubricating cavity, the first loading roller is arranged in the lubricating cavity, the second loading roller is arranged in the lubricating cavity;
secondly, sealing the lubricating cavity, and introducing lubricating oil with set temperature into the lubricating cavity;
thirdly, loading weights with different weights on a loading lever;
fourthly, starting a main driving motor to enable the main loading roller to rotate, and starting a first driving motor and a second driving motor to enable the first bearing roller and the second bearing roller to rotate;
fifthly, adjusting the temperature of lubricating oil in the lubricating cavity by changing the rotating speeds of the main driving motor, the first driving motor and the second driving motor, and simulating the rotating state of the sample piece under different working conditions of the sample;
and sixthly, removing the lubricating oil in the lubricating cavity, taking out the sample piece from a clamping area between the main loading roller and the first and second loading rollers, and acquiring the friction and wear sample data of the sample piece.
Compared with the prior art, the invention has the beneficial effects that: when the miniature three-roller micro-pitting testing machine is actually used, a sample is arranged in a clamping area formed by the first and second loading rollers and the main loading roller and used for clamping a sample piece, different recording forces are loaded on the sample through the main loading roller, the first and second loading rollers and the main loading roller are started to rotate, different contact slip-roll ratios can be provided for the sample piece, and a friction and abrasion test of the sample is implemented.
Drawings
FIGS. 1 and 2 are schematic views of two visual structures of a three-point sliding-rolling contact fatigue wear testing machine;
FIGS. 3 and 4 are schematic views of the three-point type sliding-rolling contact fatigue wear testing machine with two viewing angles after the three-point type sliding-rolling contact fatigue wear testing machine is moved out of a partial structure;
FIGS. 5 and 6 are schematic views of the support body from two different perspectives;
fig. 7 is a schematic structural view of the main loading roller.
Detailed Description
The three-point contact fatigue wear tester of the present invention will be further described with reference to fig. 1 to 7:
a three-point sliding-rolling contact fatigue wear testing machine comprises a horizontally arranged main loading roller 100, wherein the main loading roller 100 is connected with a loading mechanism, two sides below the main loading roller 100 are respectively provided with a first loading roller 200 and a second loading roller 400, the first loading roller 200 and the second loading roller 400 are both arranged in parallel with the main loading roller 100, the roller core connecting lines of the three rollers are in a regular triangle shape, a clamping area for clamping a sample piece 300 is formed between the roller bodies, and the contact sliding-rolling ratios of the main loading roller 100, the first loading roller 200, the second loading roller 400 and the sample piece 300 are different;
the testing machine uses a main loading roller 100 and a first loading roller 200 and a second loading roller 400 which are arranged at two sides below the main loading roller to clamp a sample piece 300, and a regular triangle area is enclosed by roller core connecting lines of the main loading roller 100, the first loading roller 200 and the second loading roller 400, and contact slip-roll ratios of roller bodies of the main loading roller 100, the first loading roller 200 and the second loading roller 400 and the sample piece 300 are different, so that any required slip-roll ratio is allowed to be arranged between 0% (pure rolling) and 200% (pure sliding);
therefore, the tester controls the sliding rolling ratio of parts by changing the rotating speed of the main loading roller 100 and the rotating speeds of the first loading roller 200 and the second loading roller 400 arranged at two sides below the main loading roller to evaluate the comprehensive use performance of materials, can simulate the use working condition of an actual rotating part, can more accurately obtain the friction wear test data of the rotating part, and has more accurate definition on the material characteristics of the rotating part.
As a preferred scheme of the present invention, in practical applications, in order to conveniently control the rotation speeds of the main loading roller 100 and the first loading roller 200 and the second loading roller 400 disposed at two sides below the main loading roller 100, one end of the main loading roller 100 is connected to a main driving mechanism, the first loading roller 200 and the second loading roller 400 are respectively connected to a first driving mechanism and a second driving mechanism, and the rotation speeds of the main loading roller 100 and the first loading roller 200 and the second loading roller 400 are different;
the main loading roller 100 and the first loading roller 200 and the second loading roller 400 arranged at the two sides below the main loading roller 100 are respectively connected with respective driving mechanisms, so that the main loading roller 100, the first loading roller 200 and the second loading roller 400 are independent from each other and can provide different rotating speeds for the main loading roller 100 and the first and second loading rollers 200 and 400, and further, the contact sliding-rolling ratios of three groups of independent roller pieces and the sample piece 300 are different.
In order to further improve the simulation effect of the friction wear test, a lubricating cavity is arranged at the peripheries of the main loading roller 100 and the first loading roller 200 and the second loading roller 400 arranged at two sides below the main loading roller, oil is injected into the lubricating cavity, a temperature detection unit is arranged in the lubricating cavity, an inlet and an outlet are arranged on the lubricating cavity, the inlet is communicated with the outlet of the oil feeding unit, and lubricating oil with a set temperature is led out from the outlet of the oil feeding unit;
make the sample submergence in lubricating oil to through the temperature that changes leading-in lubricating oil, the actual use operating mode of simulation sample that more can be accurate, fluid feed unit can select for use common heat exchanger to carry out quick heat transfer, sets up temperature sensor in lubricated cavity, realizes the regulation to fluid temperature, and this department has comparatively ripe equipment to the conversion and the operation of advancing of fluid temperature, and this department is not repeated.
Preferably, to load the sample, the main loading roller 100 is rotatably disposed on a slider 110, the slider 110 is vertically slidably disposed on the support 120, the slider 110 is connected to a loading point of a loading lever 130, and a loading weight is disposed on the loading lever 130;
the loading weight arranged on the loading lever 130 is used for accurately loading the moment on the sliding block 110 so as to load the moment on a sample through the main loading roller 100, the testing machine adopts the traditional weight type loading, the requirement of 0-4kN load can be met, the load is more stable, and the accurate control can be realized;
the loading of the moment on the loading lever 130 can also be implemented by adopting a loading electric cylinder mode, and the moment loading is more accurate.
Preferably, the loading lever 130 is integrally in a bar shape, one end of the loading lever is hinged to the support 120, a hinge shaft of the loading lever 130 is arranged in parallel with the main loading roller 100, and the loading weight is detachably disposed at the other end of the loading lever 130.
When moment loading is performed on the slider 110, a clamping notch 121 is formed in the support body 120, the slider 110 and four guide pillars 122 in the clamping notch 121 form sliding fit, the four guide pillars 122 are vertically arranged, a loading guide pillar is arranged at the middle section of the loading lever 130, and the loading guide pillar is vertical and connected with the upper end of the slider 110. (ii) a
The sliding guide of the sliding block 110 is realized through the four guide posts 122, and the accuracy of loading the moment on the main loading roller 100 is improved.
An accommodating chamber 123 for accommodating the main loading roller 100 and the first and second loading rollers 200 and 400 is arranged at one side of the supporting body 120, a cover plate 124 is arranged at the opening position of the accommodating chamber 123, and the accommodating chamber 123 and the cover plate 124 form a lubricating chamber;
a liquid inlet and outlet pipe orifice 1232 is arranged at one side of the accommodating chamber 123, and the liquid inlet and outlet pipe orifice 1232 guides out and in high-temperature oil;
a detachable cover 1241 can also be arranged on the cover plate 124, after the detachable cover 1241 is opened, oil liquid is injected into the accommodating chamber 123 through an injector, and the cover 1241 is fixed on the cover plate 124, so that the test operation is convenient.
For making main loading roller 100 can be located supporter 120 and jump from top to bottom to implement the sealed to main loading roller 100, the bottom that holds cavity 123 is provided with waist shape hole 1231, waist shape hole 1231 vertical arrangement of length direction, main loading roller 100 center is provided with the connecting axle, waist shape hole 1231 is passed to the connecting axle, be provided with sealed the pad 140 on the connecting axle, sealed the pad 140 supports with the bottom that holds cavity 123 that waist shape hole 1231 is located and leans on, the connecting axle stretches out the tip that holds cavity 123 and is connected with main drive driving motor 150's pivot through the shaft coupling.
Similarly, the central ends of the first and second loading rollers 200 and 400 are respectively provided with a connecting shaft, and the connecting shaft passes through the bottom of the accommodating chamber 123 and is respectively connected with the first driving motor 210 and the second driving motor 410 through a coupler;
the testing machine aims at the aim of miniaturization, reduces the frame and designs the assembly of devices such as rollers and the like more compactly;
the first driving motor 150 and the second driving motor 210 adopted by the testing machine are respectively a three-phase asynchronous motor and a servo motor, more reliable power support is provided for the testing machine, the flexible control of the rotating speed of the testing machine is facilitated, the mechanical structure is simplified, and the reliability of the testing machine is improved.
A miniature three-roller micro-pitting test method comprises the following steps:
firstly, manufacturing a sample piece 300 into a cylindrical shape or a spherical shape, changing the shapes of a main loading roller 100 and first and second loading rollers 200 and 400 to adapt to sample pieces 300 with different shapes, and arranging the sample piece 300 in a clamping area between the main loading roller 100 and the first and second loading rollers 200 and 400 in a lubrication chamber, wherein the main loading roller 100 and the first and second loading rollers 200 and 400 are respectively connected with respective driving mechanisms, and the contact slip-roll ratios of the main loading roller 100 and the first and second loading rollers 200 and 400 to the sample piece 300 are different;
secondly, sealing the lubricating cavity, and introducing lubricating oil with set temperature into the lubricating cavity;
thirdly, loading weights with different weights on the loading lever 130;
fourthly, starting the main driving motor 150 to rotate the main loading roller 100, and starting the first driving motor 210 and the second driving motor 410 to rotate the first and second loading rollers 200 and 400;
fifthly, adjusting the temperature of the lubricating oil in the lubricating cavity by changing the rotating speeds of the main driving motor 150, the first driving motor 210 and the second driving motor 410, and simulating the rotating state of the sample piece 300 under different working conditions of the sample;
and sixthly, removing the lubricating oil in the lubricating cavity, taking out the sample piece 300 from the clamping area between the main loading roller 100 and the first and second loading rollers 200 and 400, and acquiring the friction wear sample data of the sample piece 300.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The utility model provides a three-point type sliding-rolling contact fatigue wear testing machine which characterized in that: the loading device comprises a horizontally arranged main loading roller (100), wherein the main loading roller (100) is connected with a loading mechanism, a first loading roller (200) and a second loading roller (400) are respectively arranged on two sides below the main loading roller (100), the first loading roller (200) and the second loading roller (400) are both arranged in parallel with the main loading roller (100), roller core connecting lines of three groups of rollers are in a regular triangle shape, a clamping area for clamping a sample piece (300) is formed between roller bodies, and contact slip-roll ratios of the main loading roller (100) and the first loading roller (200) and the second loading roller (400) to the sample piece (300) are different.
2. The three-point sliding-rolling contact fatigue wear testing machine according to claim 1, characterized in that: one end of the main loading roller (100) is connected with a main driving mechanism, the first and second loading rollers (200, 400) are respectively connected with the respective first driving mechanism and second driving mechanism, and the main loading roller (100) and the first and second loading rollers (200, 400) have different rotating speeds.
3. The three-point sliding-rolling contact fatigue wear testing machine according to claim 1 or 2, characterized in that: main loading roller (100) and first, second hold dress roller (200, 400) periphery and have closed lubricated cavity, it has fluid to enclose to close the interior injection of cavity, be provided with temperature detecting unit in the lubricated cavity, be provided with entry and export on the lubricated cavity, entry and fluid feed unit's export intercommunication, the lubricated fluid of settlement temperature is derived in fluid feed unit's export.
4. The three-point sliding-rolling contact fatigue wear testing machine according to claim 1, characterized in that: the main loading roller (100) is arranged on a sliding block (110), the sliding block (110) is vertically arranged on a supporting body (120) in a sliding mode, the sliding block (110) is connected with a loading point of a loading lever (130), and a pressure loading mechanism is arranged on the loading lever (130).
5. The three-point sliding-rolling contact fatigue wear testing machine according to claim 4, characterized in that: the loading lever (130) is integrally in a bar shape, one end of the loading lever is hinged to the support body (120), a hinged shaft of the loading lever (130) is arranged in parallel with the main loading roller (100), and the loading weight is detachably arranged at the other end of the loading lever (130).
6. The three-point sliding-rolling contact fatigue wear testing machine according to claim 5, characterized in that: the support body (120) is provided with a clamping gap (121), the sliding block (110) is in sliding fit with four guide columns (122) in the clamping gap (121), the four guide columns (122) are vertically arranged, a loading guide column is arranged at the middle section of the loading lever (130), and the loading guide column is vertical and is connected with the upper end of the sliding block (110).
7. The three-point sliding-rolling contact fatigue wear testing machine according to claim 6, characterized in that: an accommodating chamber (123) for accommodating the main loading roller (100) and the first and second loading rollers (200, 400) is arranged on one side of the support body (120), a cover plate (124) is arranged at the opening position of the accommodating chamber (123), and the accommodating chamber (123) and the cover plate (124) form a lubricating chamber.
8. The three-point sliding-rolling contact fatigue wear testing machine according to claim 7, characterized in that: the bottom that holds cavity (123) is provided with waist shape hole (1231), waist shape hole (1231) vertical arrangement of length direction, main loading roller (100) center is provided with the connecting axle, the connecting axle passes waist shape hole (1231), be provided with sealed pad (140) on the connecting axle, sealed pad (140) support with the bottom that holds cavity (123) at waist shape hole (1231) place and lean on, the connecting axle stretches out the tip that holds cavity (123) and passes through the pivot of shaft coupling and main driving motor (150) and be connected.
9. The three-point sliding-rolling contact fatigue wear testing machine according to claim 8, characterized in that: the central ends of the first and second loading rollers (200, 400) are respectively provided with a connecting shaft, and the connecting shafts penetrate through the bottom of the accommodating chamber (123) and are respectively connected with the first driving motor (210) and the second driving motor (410) through a coupler.
10. The miniature three-roller micro-pitting test method is characterized by comprising the following steps: the miniature three-roller micro-pitting test method comprises the following steps:
firstly, a sample piece (300) is made into a cylindrical shape or a spherical shape, the shape of a main loading roller (100) and first and second loading rollers (200, 400) is changed to adapt to the sample pieces (300) with different shapes, the sample piece (300) is arranged in a clamping area between the main loading roller (100) in a lubricating cavity and the first and second loading rollers (200, 400), the main loading roller (100) and the first and second loading rollers (200, 400) are respectively connected with respective driving mechanisms, and the contact slip-roll ratios of the main loading roller (100) and the first and second loading rollers (200, 400) to the sample pieces (300) are different;
secondly, sealing the lubricating cavity, and introducing lubricating oil with set temperature into the lubricating cavity;
thirdly, loading weights with different weights on a loading lever (130);
fourthly, starting a main driving motor (150) to enable the main loading roller (100) to rotate, and starting a first driving motor (210) and a second driving motor (410) to enable the first and second loading rollers (200, 400) to rotate;
fifthly, the temperature of lubricating oil in the lubricating cavity is adjusted by changing the rotating speeds of the main driving motor (150), the first driving motor (210) and the second driving motor (410), and the rotating state of the sample piece (300) under different working conditions of the sample is simulated;
and a sixth step of removing the lubricating oil in the lubricating chamber, taking out the sample piece (300) from the clamping area between the main loading roller (100) and the first and second loading rollers (200, 400), and acquiring the friction wear sample data of the sample piece (300).
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| CN106855480A (en) * | 2016-11-05 | 2017-06-16 | 上海大学 | The linear contact lay pure rolling cylindrical roller fatigue life test machine of Biaxial stress four |
| US20200049603A1 (en) * | 2017-05-04 | 2020-02-13 | Chongqing Hao Han Technology Company Limited | Intelligent Rolling Contact Fatigue Testing System and Testing Method Therefor |
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