CN102109445B - Multi-direction heavy load frictional wear test method - Google Patents
Multi-direction heavy load frictional wear test method Download PDFInfo
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- CN102109445B CN102109445B CN 201010579190 CN201010579190A CN102109445B CN 102109445 B CN102109445 B CN 102109445B CN 201010579190 CN201010579190 CN 201010579190 CN 201010579190 A CN201010579190 A CN 201010579190A CN 102109445 B CN102109445 B CN 102109445B
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- slide rail
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- rail test
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- 238000010998 test method Methods 0.000 title claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 82
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 239000010729 system oil Substances 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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Abstract
The invention provides a multi-direction heavy load frictional wear test method, belonging to the technical field of a multi-direction load test. The method comprises the following steps: a first clamping head (2) and an axial loading tensile oil cylinder (4) are arranged on a reciprocating moving platform (8); a second clamping head (3) is arranged at a tension output end of the axial loading tensile oil cylinder (4); the first clamping head (2) and the second clamping head (3) clamp two ends of a slide rail testing element (5); the axial loading tensile oil cylinder (4) provides axial load to the slide rail testing element (5) via the second clamping head (4); a roller (6) is arranged above the slide rail testing element (5); a pressure oil cylinder (1) is vertically loaded by driving so that the roller (6) is contacted with the slide rail testing element (5) and the vertical load for the contact of the roller and the slide rail testing element is provided; and the reciprocating moving platform (8) drives the slide rail testing element (5) to reciprocate and produces relative friction between the slide rail testing element (5) and the roller (6). The method can simulate real stressing condition.
Description
Technical field
The present invention relates to a kind of multidirectional heavily loaded friction wear test method, belong to the multidirectional load testing machine and the method for tribological field.
Background technology
Mostly existing frictional wear test device is the rolling bearing test unit, mainly studies polishing machine and the failure mechanism of bearing under the unidirectional load effect, and multidirectional frictional wear test device is also arranged, but its load that applies is generally the little load of simulation; For in the documents and materials a small amount of introduction being arranged at home and abroad, relevant test unit and method are arranged like U.S. McDonnell Douglas aircraft company as multidirectional heavily loaded frictional wear test device in the accelerated life test and method.The present invention is a kind of test unit and the method that components and parts (slide rail) to civil aircraft polishing machine and the failure mechanism under the real load effect studied.
Summary of the invention
The object of the present invention is to provide a kind of multidirectional heavily loaded friction wear test method that can simulate true force-bearing situation.
A kind of multidirectional heavily loaded friction wear test method; It is characterized in that comprising cushion block, first chuck and axial loading tensile oil cylinder that band height control mechanism is installed on following process: a, the to-and-fro movement platform, axially the pulling force output terminal of loading tensile oil cylinder also is equipped with second chuck; B, according to the thickness of slide rail test specimen, the adjusting pad tile height makes that the centre-height of slide rail test specimen is consistent with the centre-height of above-mentioned two chucks; C, the slide rail test specimen is placed on the cushion block, and utilizes first chuck and second chuck to clamp the two ends of slide rail test specimen; D, axial loading tensile oil cylinder provide axial load through second chuck for the slide rail test specimen; E, a roller are positioned at slide rail test specimen top, through driving the vertical loading oil pressure cylinder, roller is contacted with the slide rail test specimen, and the contact vertical load of roller with the slide rail test specimen is provided; F, to-and-fro movement platform drive the to-and-fro movement of slide rail test specimen, and make generation friction relatively between slide rail test specimen and the roller.
The multidirectional heavily loaded friction wear test method of the above is characterized in that also comprising in following process: g, the wear test process and measures and the following parameter of real time record: displacement collection of illustrative plates, current displacement, present speed, vibrations frequency spectrum, reciprocating frequence, reciprocal time; The vertical load size of h, the output of monitoring pressure oil cylinder, the axial load size of pull action cylinder output, if exceed 5% system alarm setting load separately, the manual detection warning reason is also got rid of fault; I, monitoring hydraulic system oil temperature, system alarm when exceeding security set oil temperature, the manual detection warning reason is also got rid of fault; The amplitude of the frrction load of j, monitoring slide rail test specimen and roller, slide rail test specimen surface temperature, roller is if system alarm when exceeding setting value is separately shut down detection slide rail test specimen wear condition.Beneficial effect: combine with technique scheme
(1) through this test method, can the systematic error of test be controlled in the small range, make it satisfy the polishing machine test accuracy requirement of civil aircraft components and parts;
(2), can provide stable, reliable multidirectional test big load, true experimental enviroment that can analog component through this test method;
(3) add load and reciprocating frequence and under the situation that test is not stopped, change at any time, improve test efficiency, and loading and unloading safety is controlled;
(4) the test parameters record is complete, and slide rail test specimen wear condition is monitored in real time, and the system failure can in time be found, and can carry out remote monitoring and control.
Description of drawings
Fig. 1 is multidirectional heavily loaded frictional wear test device synoptic diagram;
Fig. 2 is multidirectional heavily loaded friction-wear test route map;
Label title among the figure: 1: vertical loading oil pressure cylinder; 2: the first chucks; 3: the second chucks; 4: axial loading tensile oil cylinder; 5: the slide rail test specimen; 6: roller; 7: the roller anchor clamps; 8, to-and-fro movement platform; 9: the motion oil cylinder; 10: column; 11: worktable; 12: height control mechanism; 13: the open loop control box; 14: hydraulic oil pipe.
Embodiment
A kind of multidirectional heavily loaded frictional wear test device is characterized in that comprising: worktable 11, be installed on to-and-fro movement platform 8 on the worktable, be fixed in to-and-fro movement platform 8 one ends first chuck 2 that is used to clamp slide rail test specimen 5 one ends, be fixed on the pull action cylinder 4 of to-and-fro movement platform 8 other ends; Also comprise second chuck 3 that is used to clamp the slide rail test specimen other end that is installed on pull action cylinder 4 load output terminals; Also comprise and be installed on the to-and-fro movement platform 8 and the height control mechanism 12 that is used to support the slide rail test specimen between first chuck 2 and second chuck 3; Also comprise and be installed on the oil pressure cylinder 1 that stands still for a long while on the column on the worktable 11 10, the roller anchor clamps 7 that are installed on oil pressure cylinder 1 load output terminal and produce the roller 6 of rolling friction with the slide rail test specimen.
1. levelness, the verticality of adjustment test bench make its error control 20
UmIn the scope, be in the surface level direction of vertical load vertical with surface level (all must detect, adjust before loading the slide rail test specimen at every turn) to guarantee axial load;
2. select the slide rail test specimen, select corresponding cushion block according to the specimen thickness measured value, consistent with the centre-height that guarantees the slide rail test specimen with the centre-height of chuck;
3. open each control system and the monitoring system of test unit, and preheating hydraulic system 15 minutes;
4. the slide rail test specimen is carried out surface lubrication, testpieces is placed on the adjusting pad, the slide rail test specimen is located, clamped to the regulator solution pressing system to high pressure conditions;
5. move down through oil pressure cylinder driving rolls anchor clamps, contact with the slide rail test specimen, guarantee that through specific purpose tool the roller axis is vertical all the time with the slide rail vibration-direction until roller;
6. according to the required load of slide rail, with vertical load and axial load 5% as in the corresponding parameter setting that preloads input control program; After 15 minutes, directly import required test load, system is not more than 2% marginal test rate of loading with per second and on the basis that preloads, begins to load, until stable;
7. through the motion oil cylinder of to-and-fro movement platform, point is ground in rising of adjustment roller and slide rail test specimen, and makes the to-and-fro movement platform under the driving of motion oil cylinder, begin friction-wear test;
8. through monitoring system, can monitor and write down the parameters such as amplitude, displacement collection of illustrative plates, current displacement, present speed, rumble spectrum, reciprocating frequence, reciprocal time of frrction load, slide rail test specimen surface temperature, the roller of vertical load, axial load, system oil temperature, slide rail test specimen and roller in real time;
9. in process of the test, if when having at least a parameter to exceed preset threshold in the parameters such as vertical load, axial load, system oil temperature, system alarm is shut down and is detected and troubleshooting;
10. in process of the test; If when having at least a parameter to exceed preset threshold in the parameters such as the amplitude of the frrction load of slide rail test specimen and roller, slide rail test specimen surface temperature, roller, slide rail test specimen to-and-fro movement number of times; System alarm is shut down the wear condition that detects the slide rail test specimen;
11. during off-test, the unloading axial load unloads vertical load again, and makes the roller anchor clamps rise to certain altitude earlier, is convenient to the slide rail test specimen and takes out each control system and the monitoring system of closing test device.
Claims (2)
1. multidirectional heavily loaded friction wear test method is characterized in that comprising following process:
Cushion block, first chuck (2) and the axial loading tensile oil cylinder (4) of band height control mechanism (12) are installed on a, the to-and-fro movement platform (8), and axially the pulling force output terminal of loading tensile oil cylinder (4) also is equipped with second chuck (3);
B, according to the thickness of slide rail test specimen (5), the adjusting pad tile height makes that the centre-height of slide rail test specimen (5) is consistent with the centre-height of above-mentioned two chucks;
C, slide rail test specimen (5) is placed on the cushion block, and utilizes first chuck (2) and second chuck (3) to clamp the two ends of slide rail test specimen (5);
D, axial loading tensile oil cylinder (4) provide axial load through second chuck (4) for slide rail test specimen (5);
E, a roller (6) are positioned at slide rail test specimen (5) top, through driving vertical loading oil pressure cylinder (1), roller (6) is contacted with slide rail test specimen (5), and the contact vertical load of roller with the slide rail test specimen is provided;
F, to-and-fro movement platform (8) drive slide rail test specimen (5) to-and-fro movement, and make generation friction relatively between slide rail test specimen (5) and the roller (6).
2. multidirectional heavily loaded friction wear test method according to claim 1 is characterized in that also comprising following process:
Measure and the following parameter of real time record in g, the wear test process: displacement collection of illustrative plates, current displacement, present speed, vibrations frequency spectrum, reciprocating frequence, reciprocal time;
The vertical load size of h, the output of monitoring pressure oil cylinder, the axial load size of pull action cylinder output, if exceed 5% system alarm setting load separately, the manual detection warning reason is also got rid of fault;
I, monitoring hydraulic system oil temperature, system alarm when exceeding security set oil temperature, the manual detection warning reason is also got rid of fault;
The amplitude of the frrction load of j, monitoring slide rail test specimen and roller, slide rail test specimen surface temperature, roller is if system alarm when exceeding setting value is separately shut down detection slide rail test specimen wear condition.
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CN 201010579190 CN102109445B (en) | 2010-12-09 | 2010-12-09 | Multi-direction heavy load frictional wear test method |
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CN 201010579190 CN102109445B (en) | 2010-12-09 | 2010-12-09 | Multi-direction heavy load frictional wear test method |
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CN102109445A CN102109445A (en) | 2011-06-29 |
CN102109445B true CN102109445B (en) | 2012-12-12 |
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US6418776B1 (en) * | 2000-07-24 | 2002-07-16 | Center For Tribology, Inc. | Method and apparatus for measuring friction and wear characteristics of materials |
CN2849705Y (en) * | 2005-11-30 | 2006-12-20 | 中国矿业大学 | Reciprocating friction wear tester for femur |
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CN101625305A (en) * | 2009-07-29 | 2010-01-13 | 无锡职业技术学院 | Heavy-load sliding friction testing machine |
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Patent Citations (6)
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SU1374093A1 (en) * | 1986-06-02 | 1988-02-15 | Институт Физико-Технических Проблем Севера Якутского Филиала Со Ан Ссср | Arrangement for bending tests of materials |
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