CN102323168B - Method for testing hammer head loading deviation value during gear bending fatigue test - Google Patents
Method for testing hammer head loading deviation value during gear bending fatigue test Download PDFInfo
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- CN102323168B CN102323168B CN 201110272488 CN201110272488A CN102323168B CN 102323168 B CN102323168 B CN 102323168B CN 201110272488 CN201110272488 CN 201110272488 CN 201110272488 A CN201110272488 A CN 201110272488A CN 102323168 B CN102323168 B CN 102323168B
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Abstract
The invention relates to a method for testing a hammer head loading deviation value during a gear bending fatigue test, which is used for solving the problem that only the uniformity of hammer head loading can be determined qualitatively but the hammer head loading deviation value cannot be determined quantitatively by the conventional detection method. The method comprises the following steps of: sticking a strain foil to a region where a loading hammer head is deformed easily; acquiring a voltage signal of the strain foil; computing the deflection of the region where the loading hammer head is deformed easily according to the voltage signal; drawing load and deflection curves; determining a practical load value of the hammer head when the tooth crest of a test gear is uniformly loaded; and computing a deviation value of the contact between the loading hammer head and the tooth crest in combination with the geometric structure and material mechanics parameters of the loading hammer head so as to obtain the hammer head loading deviation value. The testing method is easy to operate, and is convenient; and by adopting the testing method, the hammer head loading deviation can be computed, a quantitative index is provided for error analysis of a testing result, the accuracy of a gear bending fatigue test result is increased, and the testing period and cost are reduced.
Description
Technical field
The present invention relates to a kind of gear testing method, be specifically related to a kind of method of testing of hammer head loading deviation value during gear bending fatigue test.
Background technology
Gear is widely applied to industrial every field as the kinematic train base components.The excellence of gear manufacturing property and serviceable life just all can be caused the normal operation of plant equipment and be seriously influenced.Along with continuous renewal and the improvement of gear fatigue life checkout equipment and detection method, Gear Contact and flexible life prediction are more and more accurate, greatly reduce the heavy losses that plant equipment causes owing to gear failure.Gear bending fatigue test all adopts monodentate or bidentate loading method at present, namely loads tup and directly contacts with gear teeth tooth top, by applying average and alternate load, realizes gear teeth fracture failure.Therefore, tup loads homogeneity and tup at gear teeth tooth top and loads deviation gear bending fatigue test result's authenticity and reliability had very important impact.The gear bending fatigue test tup is loaded inhomogeneity test both at home and abroad at present and mainly adopt visual method.Whether can only the be qualitative definite tup of this kind detection method loads even, and the tup that calculates that can't be quantitative loads deviate.Therefore, can't analyze the impact of losing efficacy in the gear bending fatigue test process because the tup loading is inhomogeneous, cause the inefficacy of test findings or accuracy rate to reduce.And adopt complexity, exact instrument that tup loaded-up condition in the gear bending fatigue test process is monitored, and obtain tup and load deviate, not only increase experimentation cost, simultaneously because the instrument and equipment complicated operation has prolonged the test period.
Summary of the invention
The method of testing that the purpose of this invention is to provide a kind of hammer head loading deviation value during gear bending fatigue test, by detecting tup load homogeneity and loading deviate in loading procedure, improve accuracy and the reliability of test findings, avoid owing to the load inequality makes the gear premature failure.
The present invention is achieved by the following technical solutions:
A kind of method of testing of hammer head loading deviation value during gear bending fatigue test may further comprise the steps:
1, according to GB/T14230-1993 " tooth bending Stromeyer test method " the test gear is carried out clamping, make the requirement of gear clamping state symbol standardization by adjustment;
2, select the test strain gauge adhesion of proper resistor value loading the yielding location of tup, by strainmeter the test foil gauge is demarcated, the warranty test strain gauge adhesion is in good condition simultaneously;
3, increase gradually load value, and record load value and test foil gauge voltage signal values;
4, will test the foil gauge voltage signal values and be converted to the deflection that loads the yielding zone of tup, and draw out the load and deformation discharge curve;
5, find out load and deformation discharge curve corner position, according to the knee point position, determine to load tup and load when even in the test gear teeth tips, load tup real load value F
N
6, load tup and the deviate that the test gear teeth tips contacts in conjunction with loading tup geometry and mechanical parameters and test gear physical dimension, calculating, the tup that is in this patent loads deviate;
Specific formula for calculation is as follows:
Δd＝(F
N×a
2)/(E×h×b
3/12)；
F wherein
NLoad when even tup real load value in the test gear teeth tips for loading tup; A is half of gear tooth width; B is the thickness of the yielding location of tup, and h is the width of the yielding location of tup, and E is the hammer head material elastic modulus, and Δ d is tup and loads deviate.
Adopt tup of the present invention to load the method for testing of deviate, simple to operate, convenient, can realize determining fast in the gear bending fatigue test process, tup loads homogeneity, and accurately calculate tup and load deviation, for the test findings error analysis provides quantifiable indicator, improve gear bending fatigue test result's accuracy rate, shorten test period and cost.
Description of drawings
Fig. 1 is test flow chart of the present invention;
Fig. 2 is embodiment of the invention proving installation package assembly schematic diagram;
Fig. 3 is embodiment of the invention load and deviate curve map;
Fig. 4 is that the embodiment of the invention loads the hammehead structure schematic diagram.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples, but following embodiment should not be construed as limitation of the present invention.
Embodiment:
Such as Fig. 1-shown in Figure 4, the inventive method step is as follows:
1, the present invention is before detecting test, according to GB/T14230-1993 " tooth bending Stromeyer test method " the test gear is carried out clamping, and according to the standard relevant regulations to loading tup anchor clamps 1, loading tup 2 and gear fixture support 4 checks, adopt 3 pairs of gear clampings of cushion block state to detect, make the requirement of gear clamping state symbol standardization by adjustment, as shown in Figure 2;
2, the strain gauge adhesion of selecting the proper resistor value is demarcated the test foil gauge by strainmeter at yielding regional 5 places of tup, guarantees that simultaneously strain gauge adhesion is in good condition;
3, increase gradually load value, and record load value and foil gauge voltage signal values;
4, the foil gauge voltage signal values is converted to the deflection in the yielding zone of tup, and draws out the load and deformation discharge curve, i.e. load and deviate curve map, as shown in Figure 3;
5, according to the knee point position, determine that tup loads when even tup real load value F in the test gear teeth tips
N, as shown in Figure 3.
6, in conjunction with loading tup geometry (thickness in the yielding zone of tup, width) and mechanical parameters (tup elastic modulus) and gear geometry parameter (facewidth), calculate and load the deviate that tup contacts with tooth top, the tup that is in this patent loads deviate.
Specific formula for calculation following (hammehead structure is as shown in Figure 4):
Δd＝(F
N×a
2)/(E×h×b
3/12)；
F wherein
NFor tup loads when even tup real load value in the test gear teeth tips; A is half of gear tooth width; B is the thickness at yielding regional 5 places of tup, and h is the width at yielding regional 5 places of tup; E is the hammer head material elastic modulus; Δ d is tup and loads deviate.
Claims (1)
1. the method for testing of a hammer head loading deviation value during gear bending fatigue test is characterized in that: may further comprise the steps:
1), according to GB/T14230-1993 " tooth bending Stromeyer test method " to the test gear carry out clamping, make the requirement of gear clamping state symbol standardization by adjustment;
2), select the test strain gauge adhesion of proper resistor value loading the yielding location of tup, by strainmeter the test foil gauge is demarcated, the warranty test strain gauge adhesion is in good condition simultaneously;
3) increase, gradually load value, and record load value and test foil gauge voltage signal values;
4), will test the foil gauge voltage signal values and be converted to the deflection that loads the yielding zone of tup, and draw out the load and deformation discharge curve;
5), find out load and deformation discharge curve corner position, according to the knee point position, determine to load tup and load when even in the test gear teeth tips, load tup real load value F
N
6), load tup and the deviate that the test gear teeth tips contacts in conjunction with loading tup geometry and mechanical parameters and test gear physical dimension, calculating, be tup loading deviate;
Specific formula for calculation is as follows:
Δd＝(F
N×a
2)/(E×h×b
3/12)；
F wherein
NLoad when even tup real load value in the test gear teeth tips for loading tup; A is half of gear tooth width; B is the thickness of the yielding location of tup, and h is the width of the yielding location of tup, and E is the hammer head material elastic modulus, and Δ d is tup and loads deviate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110272488 CN102323168B (en) | 2011-09-15 | 2011-09-15 | Method for testing hammer head loading deviation value during gear bending fatigue test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110272488 CN102323168B (en) | 2011-09-15 | 2011-09-15 | Method for testing hammer head loading deviation value during gear bending fatigue test |
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|---|---|
| CN102323168A CN102323168A (en) | 2012-01-18 |
| CN102323168B true CN102323168B (en) | 2013-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUA20164239A1 (en) * | 2016-06-09 | 2017-12-09 | Ge Avio Srl | TEST EQUIPMENT FOR GEARS |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967509B (en) * | 2012-11-22 | 2014-12-10 | 南京航空航天大学 | Face-gear bending fatigue test mechanism and method |
| CN103091392B (en) * | 2013-01-15 | 2015-05-27 | 中国人民解放军国防科学技术大学 | Gear flexural fatigue crack damage detection method based on magnetic flux leakage signal measurement |
| CN107860507A (en) * | 2017-10-31 | 2018-03-30 | 南京卓砾智测控技术有限公司 | Pressure sensor calibration force snesor and its calibration method |
| CN109738283A (en) * | 2018-12-10 | 2019-05-10 | 内蒙古第一机械集团股份有限公司 | A kind of measuring system and measurement method of the loaded deflection of gear |
| CN110567714A (en) * | 2019-09-27 | 2019-12-13 | 内蒙古第一机械集团股份有限公司 | Method for testing loading uniformity of gear bending fatigue test |
| CN113358347A (en) * | 2021-06-22 | 2021-09-07 | 一汽解放汽车有限公司 | Straight gear bending fatigue test fixture and experimental device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153053Y (en) * | 1993-01-21 | 1994-01-12 | 广西大学 | Testing machine for gear bending fatigue |
| CN102053014A (en) * | 2010-10-29 | 2011-05-11 | 上海市机械制造工艺研究所有限公司 | Gear impact bend simulation test method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58100736A (en) * | 1981-12-10 | 1983-06-15 | Sharp Corp | Fatigue testing machine |
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2011
- 2011-09-15 CN CN 201110272488 patent/CN102323168B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2153053Y (en) * | 1993-01-21 | 1994-01-12 | 广西大学 | Testing machine for gear bending fatigue |
| CN102053014A (en) * | 2010-10-29 | 2011-05-11 | 上海市机械制造工艺研究所有限公司 | Gear impact bend simulation test method and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUA20164239A1 (en) * | 2016-06-09 | 2017-12-09 | Ge Avio Srl | TEST EQUIPMENT FOR GEARS |
| WO2017211744A1 (en) * | 2016-06-09 | 2017-12-14 | Ge Avio S.R.L. | Testing apparatus for gears |
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| Publication number | Publication date |
|---|---|
| CN102323168A (en) | 2012-01-18 |
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Effective date of registration: 20161209 Address after: 014032 Baotou rare earth hi tech Industrial Development Zone, the first functional area of the Inner Mongolia Autonomous Region Patentee after: Baotou Beifang Venture Co., Ltd. Address before: 014032 Baotou Qingshan District Inner Mongolia first machinery manufacturing (Group) Co., Ltd. (the Inner Mongolia Autonomous Region) Patentee before: Inner Mongolia First Machinery Group Corp. |
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Address after: 014032, Baotou, Inner Mongolia two mailbox technology and Information Technology Department Patentee after: Inner Mongolia First Machinery Group Limited by Share Ltd Address before: 014032 Baotou rare earth hi tech Industrial Development Zone, the first functional area of the Inner Mongolia Autonomous Region Patentee before: Baotou Beifang Venture Co., Ltd. |