CN207280745U - A kind of test fixture for the loading of gear bending fatigue test monodentate - Google Patents
A kind of test fixture for the loading of gear bending fatigue test monodentate Download PDFInfo
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- CN207280745U CN207280745U CN201721209146.2U CN201721209146U CN207280745U CN 207280745 U CN207280745 U CN 207280745U CN 201721209146 U CN201721209146 U CN 201721209146U CN 207280745 U CN207280745 U CN 207280745U
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- gear
- loading
- test
- monodentate
- flexible
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Abstract
A kind of test fixture for the loading of gear bending fatigue test monodentate provided by the utility model, including flexible loading head, clamp base and clamp device, wherein, it is fixed on by clamp device by gear is tested in clamp base, the tooth top for testing gear is in contact with flexible loading head, and flexible loading head is installed on loading machine.The cooperation that this test fixture passes through clamp base and flexible loading head so that this test fixture uses the test method every tooth loading, which adds the utilization rate of gear tooth.This fixture has the features such as simple in structure, easy to assembly, accurate positioning, reliability and high gear tooth utilization rate, can be applied to the test of involute cylindrical gear flexible life.Also there is the features such as easy to process, of low cost at the same time, such a structure simplifies gear mounting means, improves gear tooth utilization rate, while the research to Gears Fatigue Strength plays acceleration.
Description
Technical field
The utility model belongs to Gear Processing field, and in particular to a kind of to be used for what gear bending fatigue test monodentate loaded
Test fixture.
Background technology
The research of tooth bending fatigue strength has particularly significant to improving gear capacity, development gear transmission technology
Meaning.Gear bending fatigue test has the characteristics that to require that test specimen is more, the test period is long, testing expenses are expensive.
Due to testing the material of gear, heat treatment, machining accuracy all have very high requirement, consume huge financial resources,
Man power and material, but gear bending fatigue test uses the load mode in national standard more at this stage, causes the very big of gear tooth
Waste.
GB/T14230-1993《Tooth bending Stromeyer test method》The technical requirements of appendix C test fixture are for tooth
Wheel bending testing pulse fatigue has two kinds of load modes, i.e. monodentate loading and bidentate loading.No matter monodentate loading or bidentate add
Carrying, gear is between tooth and its adjacent gear teeth due to the experiment gear teeth and support the stress effect of the gear teeth and become the invalid gear teeth,
Significant wastage is caused, and two kinds of test fixtures are all unfavorable for adjusting load being uniformly distributed along teeth directional.
The content of the invention
The purpose of this utility model is to provide a kind of test fixture for the loading of gear bending fatigue test monodentate, solution
Determined it is existing no matter monodentate loading or bidentate loading, gear is between tooth and its adjacent gear teeth are due to testing the gear teeth and support
The stress of the gear teeth acts on and becomes the invalid gear teeth, causes significant wastage.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of test fixture for the loading of gear bending fatigue test monodentate provided by the utility model, including flexibility add
Carrier head, clamp base and clamp device, wherein, it is fixed on by clamp device by gear is tested in clamp base, tests gear
Tooth top be in contact with flexible loading head, flexible loading head is installed on loading machine.
Preferably, clamp base includes pedestal and riser, and riser is fixed on the upper surface of pedestal；Gear is tested installed in perpendicular
On plate.
Preferably, the cross section of riser is U-shaped structure, and mounting hole, two installations are offered on the biside plate of U-shaped structure
Hole is coaxially arranged；Experiment gear is fixed between the biside plate of riser, and the endoporus of experiment gear and mounting hole are coaxial.
Preferably, flexible loading head and pedestal are coaxially arranged.
Preferably, clamp device includes fixture pin and hexagon socket head cap screw, fixture pin and hexagon socket head cap screw be engaged by
Experiment gear is clamped on riser.
Preferably, cover board is provided between hexagon socket head cap screw and riser.
Preferably, flexible loading head includes installation end, changeover portion and working end, and installation end and working end are connected by changeover portion
Connect, wherein, installation end is connected by flange with loading machine；Changeover portion is cubic column structure, is offered on cubic column structure
Two groups of flexible structures, every group of flexible structure include two gap being arranged symmetrically；Working end is wedge structure.
Preferably, an inclined-plane in wedge structure is made of arc surface and vertical plane.
Preferably, it is pasted with foil gauge on flexible loading head.
Compared with prior art, the beneficial effects of the utility model are：
A kind of test fixture for the loading of gear bending fatigue test monodentate provided by the utility model, passes through fixture bottom
Seat fastens experiment gear, while flexible loading head is in contact with gear teeth tips so that and load position and rolling circle are tangent,
The cooperation of clamp base and flexible loading head so that this test fixture uses the test method every tooth loading, which increases
The utilization rate of gear tooth is added.This fixture has simple in structure, easy to assembly, accurate positioning, reliability and gear tooth profit
With rate it is high the features such as, can be applied to involute cylindrical gear flexible life test.At the same time also have it is easy to process, cost is low
The features such as honest and clean, such a structure simplify gear mounting means, improve gear tooth utilization rate, while to Gears Fatigue Strength
Research plays acceleration.
Further, the flexible structure of flexible loading head, ensure that being uniformly distributed for gear tooth load.
Further, the one of inclined-plane of wedge structure is made of arc surface and vertical plane, is avoided when being loaded every tooth,
By the excision of center tooth, and caused by the gear teeth waste.
Further, the increased cover board between hexagon socket head cap screw and riser is passed through so that riser is loaded in gear face
Active force uniform force, avoid because of end face unbalance stress and caused by load test effect it is undesirable.
Brief description of the drawings
Fig. 1 is test fixture structure diagram, wherein, Fig. 1 a are front views；Fig. 1 b are side views；
Fig. 2 is clamp base structure chart；Wherein, Fig. 2 a are front views；Fig. 2 b are side views；
Fig. 3 is flexible loading head structure diagram, wherein, Fig. 3 a are front views；Fig. 3 b are side views；
Wherein, 1, flexible loading head 2, fixture pin 3, hexagon socket head cap screw 4, cover board 5, flange 6, pedestal 7, riser
8th, gear 701, mounting hole 101, gap are tested.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is further described.
As shown in Figure 1 a, 1 b, a kind of examination for the loading of gear bending fatigue test monodentate provided by the utility model
Fixture, including flexible loading head 1, clamp base and clamp device are tested, wherein, it is fixed on by clamp device by gear 8 is tested
In clamp base, the tooth top for testing gear 8 is in contact with flexible loading head 1 so that load position and rolling circle are tangent；It is soft
Property loading head 1 be installed on loading machine on.
As shown in Fig. 2 a, Fig. 2 b, further, clamp base includes pedestal 6 and riser 7, and riser 7 is fixed on pedestal 6
Upper surface；Gear 8 is tested to be installed on riser 7；Specifically：Riser 7 and pedestal 6 are welded to connect, and the height dimension of riser 7 is by tooth
Wheel installation site and gear loading position determine.
Further, the cross section of riser 7 is U-shaped structure, offers mounting hole 701 on the biside plate of U-shaped structure, two
A mounting hole 701 is coaxially arranged；Experiment gear 8 is fixed between the biside plate of riser 7, and tests endoporus and the installation of gear 8
Hole 701 is coaxial.
Further, flexible loading head 1 and pedestal 6 are coaxially arranged.The special construction of clamp base fixes experiment gear 8,
Load application point acted on the tooth top using gear 8, and the load mode of this test fixture of the structure determination is to be loaded every tooth,
The structure effectively increases the utilization rate of gear tooth.
Further, clamp device includes fixture pin 2 and hexagon socket head cap screw 3,3 phase of fixture pin 2 and hexagon socket head cap screw
Coordinate and experiment gear 8 is clamped on riser 7；Pass through the fixed form so that one is produced between clamp base and gear face
Fixed frictional force, effectively prevent the rotation relative to clamp base of experiment gear 8.
Further, cover board 4 is provided between hexagon socket head cap screw 3 and riser 7；By between hexagon socket head cap screw and riser
Increased cover board so that riser load gear face active force uniform force, avoid because end face unbalance stress and caused by
Load test effect is undesirable.
Further as shown in Figure 3a, 3b, flexible loading head 1 includes installation end, changeover portion and working end, and working end leads to
Changeover portion connection working end is crossed, wherein, installation end is threadedly coupled by flange 5 with loading machine；
Changeover portion is cubic column structure, and two groups of flexible structures, every group of flexible structure bag are offered on cubic column structure
Include two gap being arranged symmetrically 101；The changeover portion uses flexible structure, ensure that being uniformly distributed for gear tooth load；
Working end is wedge structure, and the one of inclined-plane of wedge structure is made of arc surface and vertical plane, the arc surface
It is arranged such that in gear loading procedure, avoids the excision of adjacent teeth, and then improves the utilization rate of gear tooth.
Further, flexible loading head 1 is pasted with foil gauge, and strain gauge adhesion is in the end of wedge structure.
Meanwhile the foil gauge is installed when first time is using flexible loading head 1, then applies pulsating load, pass through HBM numbers
Extraction system gathers strain variation, and adjusting the installation of loading head makes load be uniformly distributed along teeth directional, after the completion of once adjusting, until plus
, which there is damage, in carrier head to be used always.
When the experiment gear teeth fail, hexagon socket head cap screw 3 is unclamped, gear is rotated, replaces next experiment gear teeth, again
Hexagon socket head cap screw 3 is tightened, this is simple in structure, installation is quick.
Single, double tooth load test fixture in the national standard that compares, this monodentate load test clamp structure is simple, easy to assembly,
Quickly, positioning is reliable；Loaded every tooth, gear teeth utilization rate is high；Load uniformly adjusts disposable completion along teeth directional, reusable；
It is suitable for the bending fatigue strength test of involute cylindrical gear；Also there is the features such as easy to process, of low cost at the same time.
Claims (9)
- A kind of 1. test fixture for the loading of gear bending fatigue test monodentate, it is characterised in that：Including flexible loading head (1), clamp base and clamp device, wherein, gear (8) will be tested by clamp device and be fixed in clamp base, test tooth The tooth top for taking turns (8) is in contact with flexible loading head (1), and flexible loading head (1) is installed on loading machine.
- 2. a kind of test fixture for the loading of gear bending fatigue test monodentate according to claim 1, its feature exist In：Clamp base includes pedestal (6) and riser (7), and riser (7) is fixed on the upper surface of pedestal (6)；Test gear (8) installation On riser (7).
- 3. a kind of test fixture for the loading of gear bending fatigue test monodentate according to claim 2, its feature exist In：The cross section of riser (7) is U-shaped structure, and mounting hole (701), two mounting holes are offered on the biside plate of U-shaped structure (701) it is coaxially arranged；Experiment gear (8) is fixed between the biside plate of riser (7), and tests endoporus and the installation of gear (8) Hole (701) is coaxial.
- 4. a kind of test fixture for the loading of gear bending fatigue test monodentate according to claim 2, its feature exist In：Flexible loading head (1) and pedestal (6) are coaxially arranged.
- 5. a kind of test fixture for the loading of gear bending fatigue test monodentate according to claim 2, its feature exist In：Clamp device includes fixture pin (2) and hexagon socket head cap screw (3), fixture pin (2) and hexagon socket head cap screw (3) be engaged by Experiment gear (8) is clamped on riser (7).
- 6. a kind of test fixture for the loading of gear bending fatigue test monodentate according to claim 4, its feature exist In：Cover board (4) is provided between hexagon socket head cap screw (3) and riser (7).
- 7. according to claim 1-6 any one of them it is a kind of for gear bending fatigue test monodentate load test fixture, It is characterized in that：Flexible loading head (1) includes installation end, changeover portion and working end, and installation end and working end are connected by changeover portion Connect, wherein, installation end is connected by flange (9) with loading machine；Changeover portion is cubic column structure, is opened up on cubic column structure There are two groups of flexible structures, every group of flexible structure includes two gap (101) being arranged symmetrically；Working end is wedge structure.
- 8. a kind of test fixture for the loading of gear bending fatigue test monodentate according to claim 7, its feature exist In：An inclined-plane in wedge structure is made of arc surface and vertical plane.
- 9. a kind of test fixture for the loading of gear bending fatigue test monodentate according to claim 7, its feature exist In：Foil gauge is pasted with flexible loading head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721209146.2U CN207280745U (en) | 2017-09-20 | 2017-09-20 | A kind of test fixture for the loading of gear bending fatigue test monodentate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721209146.2U CN207280745U (en) | 2017-09-20 | 2017-09-20 | A kind of test fixture for the loading of gear bending fatigue test monodentate |
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| Publication Number | Publication Date |
|---|---|
| CN207280745U true CN207280745U (en) | 2018-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721209146.2U Expired - Fee Related CN207280745U (en) | 2017-09-20 | 2017-09-20 | A kind of test fixture for the loading of gear bending fatigue test monodentate |
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| Country | Link |
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| CN (1) | CN207280745U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443756A (en) * | 2018-12-25 | 2019-03-08 | 清研新能源汽车工程中心（襄阳）有限公司 | A kind of helical gear multi-tooth meshing bending fatigue testing device |
| CN109738310A (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 type variable gear bending fatigue test regulating device |
| 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 |
| CN112763311A (en) * | 2020-12-28 | 2021-05-07 | 国营第六一六厂 | Clamp for gear tooth root bending fatigue test |
| CN112781868A (en) * | 2020-12-22 | 2021-05-11 | 中国北方发动机研究所(天津) | Helical gear bending fatigue test loading pressing block structure |
| CN113884393A (en) * | 2021-08-25 | 2022-01-04 | 浙江华远汽车科技股份有限公司 | Gear single-tooth static failure strength test tool |
| CN115343171A (en) * | 2022-10-20 | 2022-11-15 | 中机生产力促进中心有限公司 | Gear tooth positioning auxiliary device and gear tooth positioning method for gear bending fatigue test |
-
2017
- 2017-09-20 CN CN201721209146.2U patent/CN207280745U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738310A (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 type variable gear bending fatigue test regulating device |
| CN109443756A (en) * | 2018-12-25 | 2019-03-08 | 清研新能源汽车工程中心（襄阳）有限公司 | A kind of helical gear multi-tooth meshing bending fatigue testing device |
| 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 |
| CN112781868A (en) * | 2020-12-22 | 2021-05-11 | 中国北方发动机研究所(天津) | Helical gear bending fatigue test loading pressing block structure |
| CN112763311A (en) * | 2020-12-28 | 2021-05-07 | 国营第六一六厂 | Clamp for gear tooth root bending fatigue test |
| CN113884393A (en) * | 2021-08-25 | 2022-01-04 | 浙江华远汽车科技股份有限公司 | Gear single-tooth static failure strength test tool |
| CN115343171A (en) * | 2022-10-20 | 2022-11-15 | 中机生产力促进中心有限公司 | Gear tooth positioning auxiliary device and gear tooth positioning method for gear bending fatigue test |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180427 |
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| CF01 | Termination of patent right due to non-payment of annual fee |