CN105571862A - Rolling contact fatigue testing machine - Google Patents
Rolling contact fatigue testing machine Download PDFInfo
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- CN105571862A CN105571862A CN201410553759.2A CN201410553759A CN105571862A CN 105571862 A CN105571862 A CN 105571862A CN 201410553759 A CN201410553759 A CN 201410553759A CN 105571862 A CN105571862 A CN 105571862A
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Abstract
The invention relates to a rolling contact fatigue testing machine, and the machine is mainly used to carry out rapid fatigue test on rolling contact in the plane strain state. The fatigue testing machine can effectively simulate fatigue of a component with plane-strain rolling contact feature and evaluate and select processing parameters for forming the rolling contact surface, and is thus an ideal testing machine to research on the surface fatigue failure mechanism of materials. The fatigue testing machine is composed of a frame body, a linear guide rail, a sliding platform, linear motors, a loading platform and a loading mechanism, multiple strip-shaped samples can be placed on the sliding platform on the linear guide rail, and one or multiple cylindrical rolling bodies is/are arranged in the lower portion of the loading platform correspondingly. During test, the loading mechanism enables the samples make contact with the rolling bodies in certain pressure, the linear motors drive the sliding platform to make reciprocating movement in certain amplitude, and the fatigue condition of the samples can be observed after certain period.
Description
Technical field
The present invention relates to a kind of torture test proving installation, especially relate to a kind of rolling contact fatigue experimental machine.
Background technology
Cylinder roller bearing is a kind of bearing be widely used among various plant equipment.Rolling body is wherein cylindrical roller, and the contact type of it and raceway is linear contact lay.
In the use procedure of bearing, normal fatigue failure is inevitable, thus study the rule between the fatigue lifetime of bearing and material and operating mode, find desirable design proposal, and the mechanism of research material surface fatigue inefficacy further, optimal design for bearing is very important, and fatigue experiment a kind of very effective experiment research just.
Through the retrieval of existing patent, find in the fatigue experimental machine of contact type, for this contact type of Structure deformation that cylinder-plane contact is right, not yet occur more at present and comparatively efficient fatigue experimental approach or equipment.Such as: " a kind of rolling contact fatigue-testing machine " (see Chinese invention patent, publication number CN102494963A), relate to a kind of fatigue experimental device being only applicable to the contact of single roller elements, provide driving force and loading by a pair idle pulley; " Work condition analogue rolling contact fatigue tester " is (see Chinese invention patent, publication number CN1715869A), relate to a kind of fatigue experimental device being only applicable to spheroid-plane rolling contact, the rolling contact fatigue that this device is not suitable in assessment plane strain situation lost efficacy; " a kind of contact fatigue tester for bearing roller and method of operating " is (see Chinese invention patent, publication number CN102147341A), relate to a kind of fatigue experimental device being applicable to have the roller elements Structure deformation of convexity feature, this device is not suitable for evaluating the rolling contact fatigue performance state of general finishing periphery.In addition, above two devices all can not be carried out Fast Evaluation to the machining condition producing rolling surface by rolling contact fatigue performance test and are selected.
Thus a kind of fatigue experimental machine can simulating the Structure deformation of cylinder-plane type fast, is ideally developed, realize having very high engineer applied to the Fast Evaluation of rolling contact fatigue performance to be worth, experimental machine also should possess high efficiency and simulate the ability of various operating mode simultaneously.This can not only solve the fatigue experiment problem of cylinder roller bearing, also can provide good approach for the experimental study of material surface fatigue failure mechanism simultaneously.
Summary of the invention
Object of the present invention is exactly the defect existed to overcome above-mentioned prior art, is directed to this contact type of the right Structure deformation of cylinder-plane contact, provides a kind of convenient, efficient fatigue experiment equipment.
Object of the present invention can be achieved through the following technical solutions:
A kind of rolling contact fatigue experimental machine, comprise framework fuselage, line slideway, sliding platform, linear electric motors, weighted platform, load maintainer, described framework fuselage bottom level is fixed with line slideway and supporting slide block; Described sliding platform is fixed on also linearly guide rail horizontal slip on slide block; Described slide block is connected with linear electric motors through connecting link, and sliding platform is provided with several lower sample groove putting into rectangular slat sample, and the two ends in each groove are provided with screw, are anchored on sliding platform with bolt by sample; Described load maintainer is fixed on framework fuselage roof, normal pressure is vertically downward applied to the load in the simulated condition of weighted platform top, the upper sample groove placing cylindrical sample is provided with bottom weighted platform, groove two ends are provided with set collar, the quantity of upper and lower sample groove and position in correspondence with each other, with ensure cylinder sample and rectangular slat sample contacts good;
Described load maintainer applies the normal pressure of certain forms to simulate actual condition to weighted platform, and linear electric motors drive sliding platform to do the to-and-fro movement of certain amplitude according to certain frequency, to realize the relative motion of cylinder sample and rectangular slat sample.
Described framework fuselage plays effect that is stable and support structure, and miscellaneous part is wrapped in inside, owing to there is stressed and vibration, should be connected during use with desktop.
Described linear electric motors are fixed on motor base, and this motor base is fixed on the two ends of framework fuselage bottom line slideway, is connected with sliding platform, and during work, two motors carry out the to-and-fro movement of implementation platform respectively with service intermittent, thus avoid commutation.Line slideway bears the load suffered by sliding platform, needs rigidity large as far as possible, to ensure that platform can move reciprocatingly swimmingly.
The height of described motor base adjustment linear electric motors, angle are to coordinate the geometric properties of sliding platform.
Described linear electric motors alternately promote, do by a small margin under the normal pressure that sliding platform applies at load maintainer, high-frequency normal direction to-and-fro movement, make cylinder sample do rolling movement on the surface of rectangular sample, in simulation cylinder roller bearing, roller and raceway contacts situation.
Described load maintainer replaces different types of loading mode according to different requirement of experiment, such as, can adopt machinery, hydraulic pressure, determine load, cyclic loading or shock load.
Described weighted platform and sliding platform go back placement sensor with the stress-strain state of real-time test samples and surface failure situation, realizes automation experiment.
Compared with prior art, the present invention has the following advantages:
(1) can simulate the right relative motion of cylinder-plane contact pointedly, its structure directly, simply;
(2) can simulation plane strain state, for the research of research material surface fatigue failure mechanism provides ideal experimental approach;
(3) can simulate in cylinder roller bearing, the fatigue conditions of roller and raceway, a kind of method is efficiently provided to the experimental study of bearing and material thereof;
(4) load, frequency etc. can be any given, can simulate various working;
(5) sample can combination in any, and can carry out the fatigue experiment of multiple sample, efficiency is higher simultaneously;
(6) structure has opening, can carry out multiple improvement, such as use the load maintainer that can provide variable load instead to it, and placement sensor, to realize automation mechanized operation, is changed weighted platform and simulated sliding contact etc.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1 is framework fuselage, and 2 is weighted platform, 3 is sliding platform, and 4 is linear electric motors, and 5 is motor base, 6 is connecting link, and 7 is slide block, and 8 is line slideway, 9 is slide block, and 10 is connecting link, and 11 is motor base, 12 is linear electric motors, and 13 is rectangular slat sample, and 14 is cylindrical sample, 15 is load maintainer, and 16 is load maintainer.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
A kind of rolling contact fatigue experimental machine, its structure as shown in Figure 1, mainly includes framework fuselage 1, weighted platform 2, sliding platform 3, linear electric motors 4, line slideway 8, linear electric motors 12, load maintainer 15, load maintainer 16 etc.Framework fuselage 1 mainly plays effect that is stable and support structure, and the miscellaneous part of experimental machine is wrapped in inside by it, owing to there is stressed and vibration, should be connected during use with desktop.Framework fuselage 1 bottom level is fixed with line slideway 8 and supporting slide block 7, slide block 9; Sliding platform 3 is fixed on slide block 7, also linearly guide rail 8 horizontal slip on slide block 9; Slide block 7, slide block 9 is through connecting link 6, connecting link 10 and linear electric motors 4, linear electric motors 12 connect, linear electric motors 4, and linear electric motors 12 are separately fixed at motor base 5, on motor base 11, above-mentioned motor base is fixed on the two ends of line slideway 8 bottom framework fuselage 1, and can adjust linear electric motors 4, and the height of linear electric motors 12, angle are to coordinate the geometric properties of sliding platform 3.
Sliding platform 3 is provided with several lower sample groove putting into rectangular slat sample 13, and the two ends in each groove are provided with screw, are anchored on sliding platform 3 by sample with bolt.Described load maintainer 15, load maintainer 16 is fixed on the top of framework fuselage 1, normal pressure is vertically downward applied to the load in the simulated condition of weighted platform 2 top, the upper sample groove placing cylindrical sample 14 is provided with bottom weighted platform 2, groove two ends are provided with the quantity of the upper and lower sample groove of set collar and position in correspondence with each other, with ensure cylinder sample and rectangular slat sample contacts good.
During experimental machine work, load maintainer 15, load maintainer 16 pairs of weighted platforms 2 apply the normal pressure of certain forms to simulate actual condition, linear electric motors 4, linear electric motors 12 drive sliding platform 3 to do the to-and-fro movement of certain amplitude according to certain frequency, to realize the relative motion of cylinder sample and rectangular slat sample.After some cycles, observable specimen surface state.
Experimental machine has higher opening, load maintainer 15, and load maintainer 16 according to different requirement of experiment, can replace to different types of loading mode, as: machinery, hydraulic pressure; Determine load, cyclic loading, shock load etc.; Change weighted platform 2 and simulate sliding contact; On weighted platform 2 and sliding platform 3 also can placement sensor with the stress-strain state of real-time test samples and surface failure situation, to realize automation experiment.
Claims (7)
1. a rolling contact fatigue experimental machine, comprise framework fuselage (1), line slideway (8), sliding platform (3), linear electric motors (4,12), weighted platform (2), load maintainer (15,16), it is characterized in that: described framework fuselage (1) bottom level is fixed with line slideway (8) and supporting slide block (7,9); Described sliding platform (3) is fixed on upper also linearly guide rail (8) horizontal slip of slide block (7,9); Described slide block (7,9) connects through connecting link (6,10) and linear electric motors (4,12), and sliding platform (3) is provided with several lower sample groove putting into rectangular slat sample (13); Described load maintainer (15,16) framework fuselage (1) top is fixed on, normal pressure is vertically downward applied to the load in the simulated condition of weighted platform (2) top, weighted platform (2) bottom is provided with the upper sample groove placing cylindrical sample (14), the quantity of upper and lower sample groove and position in correspondence with each other, with ensure cylinder sample and rectangular slat sample contacts good;
Described load maintainer (15,16) normal pressure of certain forms is applied to simulate actual condition to weighted platform (2), linear electric motors (4,12) sliding platform (3) is driven to do the to-and-fro movement of certain amplitude according to certain frequency, to realize the relative motion of cylinder sample and rectangular slat sample.
2. a kind of rolling contact fatigue experimental machine according to claim 1, it is characterized in that, described linear electric motors (4,12) motor base (5 is fixed on, 11) on, this motor base (5,11) is fixed on the two ends of framework fuselage (1) bottom line slideway (8).
3. a kind of rolling contact fatigue experimental machine according to claim 2, it is characterized in that, the height of described motor base (5,11) adjustment linear electric motors (4,12), angle are to coordinate the geometric properties of sliding platform (3).
4. a kind of rolling contact fatigue experimental machine according to claim 1, it is characterized in that, described linear electric motors (4,12) alternately promote, sliding platform (3) is at load maintainer (15,16) do under the normal pressure applied by a small margin, high-frequency normal direction to-and-fro movement, make cylinder sample (14) do rolling movement on the surface of rectangular sample (13), in simulation cylinder roller bearing, roller and raceway contacts situation.
5. a kind of rolling contact fatigue experimental machine according to claim 1, is characterized in that, described load maintainer (15,16) replaces different types of loading mode according to different requirement of experiment.
6. a kind of rolling contact fatigue experimental machine according to claim 5, is characterized in that, described loading mode comprises machinery, hydraulic pressure, determines load, cyclic loading or shock load.
7. a kind of rolling contact fatigue experimental machine according to claim 1, it is characterized in that, described weighted platform (2) and the upper also placement sensor of sliding platform (3), with the stress-strain state of real-time test samples and surface failure situation, realize automation experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553759.2A CN105571862A (en) | 2014-10-17 | 2014-10-17 | Rolling contact fatigue testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410553759.2A CN105571862A (en) | 2014-10-17 | 2014-10-17 | Rolling contact fatigue testing machine |
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| CN105571862A true CN105571862A (en) | 2016-05-11 |
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| CN201410553759.2A Pending CN105571862A (en) | 2014-10-17 | 2014-10-17 | Rolling contact fatigue testing machine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644321A (en) * | 2016-12-08 | 2017-05-10 | 广东富华机械装备制造有限公司 | Guiding arm rack testing device |
| CN107702987A (en) * | 2017-09-04 | 2018-02-16 | 上海交通大学 | A kind of splicing reliability test device and control method for simulating oscillation crosswise operating mode |
| CN108426795A (en) * | 2018-06-08 | 2018-08-21 | 中南大学 | High speed scroll contact fatique wear testing stand |
| CN109799089A (en) * | 2019-01-28 | 2019-05-24 | 太原科技大学 | A kind of hydraulic fatigue test device and method |
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| CN2608972Y (en) * | 2003-04-22 | 2004-03-31 | 上海大学 | Bearing ball rolling contact fatigue life testing machine |
| CN1529145A (en) * | 2003-09-26 | 2004-09-15 | 上海交通大学 | Rolling and friction composite testing machine |
| CN1715869A (en) * | 2005-07-09 | 2006-01-04 | 燕山大学 | Work condition analogue rolling contact fatigue tester |
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| CN102494963A (en) * | 2011-11-04 | 2012-06-13 | 中国航空工业集团公司北京航空精密机械研究所 | Rolling contact fatigue testing machine of roller component |
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2014
- 2014-10-17 CN CN201410553759.2A patent/CN105571862A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2608972Y (en) * | 2003-04-22 | 2004-03-31 | 上海大学 | Bearing ball rolling contact fatigue life testing machine |
| CN1529145A (en) * | 2003-09-26 | 2004-09-15 | 上海交通大学 | Rolling and friction composite testing machine |
| CN1715869A (en) * | 2005-07-09 | 2006-01-04 | 燕山大学 | Work condition analogue rolling contact fatigue tester |
| CN102109445A (en) * | 2010-12-09 | 2011-06-29 | 南京航空航天大学 | Multi-direction heavy load frictional wear test method |
| CN102494963A (en) * | 2011-11-04 | 2012-06-13 | 中国航空工业集团公司北京航空精密机械研究所 | Rolling contact fatigue testing machine of roller component |
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| 温银堂: ""滚动轴承疲劳试验机测试系统和数据处理方法的研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644321A (en) * | 2016-12-08 | 2017-05-10 | 广东富华机械装备制造有限公司 | Guiding arm rack testing device |
| CN107702987A (en) * | 2017-09-04 | 2018-02-16 | 上海交通大学 | A kind of splicing reliability test device and control method for simulating oscillation crosswise operating mode |
| CN107702987B (en) * | 2017-09-04 | 2020-02-07 | 上海交通大学 | Cementing reliability experiment device for simulating transverse vibration working condition and control method |
| CN108426795A (en) * | 2018-06-08 | 2018-08-21 | 中南大学 | High speed scroll contact fatique wear testing stand |
| CN109799089A (en) * | 2019-01-28 | 2019-05-24 | 太原科技大学 | A kind of hydraulic fatigue test device and method |
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Application publication date: 20160511 |
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