CN108627334A - gear fatigue test fixture - Google Patents
gear fatigue test fixture Download PDFInfo
- Publication number
- CN108627334A CN108627334A CN201810795880.4A CN201810795880A CN108627334A CN 108627334 A CN108627334 A CN 108627334A CN 201810795880 A CN201810795880 A CN 201810795880A CN 108627334 A CN108627334 A CN 108627334A
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- China
- Prior art keywords
- gear
- load
- mounting shaft
- tested
- fatigue test
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to the technical fields such as the fatigue test of gear, and in particular to a kind of gear fatigue test fixture.The gear fatigue test fixture, including tested gear mounting shaft, load gear, load gear mounting shaft, gear-box；The tested gear mounting shaft, the load gear mounting shaft are arranged side by side, and the both ends at the both ends of the tested gear mounting shaft, the load gear mounting shaft are supported in the gear-box；The outside of the load gear is equipped with load gear apparatus for adjusting position, the load gear apparatus for adjusting position is used to adjust the spacing of load gear and the tested gear, one end of the load gear apparatus for adjusting position is connected to the load gear mounting shaft, and the other end is threadedly connected to the gear-box.
Description
Technical field
The invention belongs to the technical fields such as the fatigue test of gear, and in particular to a kind of gear fatigue test fixture.
Background technology
In design of gears, especially for relatively high gear is required in terms of reliability, according to reliability theory pair
The result for the assessment that safety coefficient carries out can not almost reflect the reliability level of gear.It is thus typically necessary to gear
Fatigue test is carried out, it is especially true to examine the reliability and durability of gear.
The existing fatigue tester that fatigue test is carried out to gear carries out fatigue test by the way of following to gear：
Gear to be tested is fixed in a clamp shaft first；Secondly, selected in the reference plane of gear to be tested one close to tooth
The control point of tip；Then, it is carried out in one tooth top of above-mentioned control point ballast using a pressure head tooling with appropriate hardness
Fatigue test.
In said gear fatigue test, a fixed position of gear under test can only be tested, it can not be to being tested tooth
The each stress point of the gear teeth of wheel carries out fatigue test.
Therefore, how fatigue test is carried out to each stress point for being tested gear, becomes those skilled in the art and urgently solves
Technical barrier certainly.
Invention content
The present invention is directed at least solve the technical problems existing in the prior art, it is proposed that a kind of gear fatigue test folder
Tool, can improve the above-mentioned problems of the prior art.
It includes tested gear mounting shaft, loaded teeth to provide a kind of gear fatigue test fixture to achieve the purpose of the present invention
Wheel, load gear mounting shaft, gear-box；The tested gear mounting shaft, the load gear mounting shaft are arranged side by side, and described
The both ends of tested gear mounting shaft, the both ends for loading gear mounting shaft are supported in the gear-box；The load gear
Outside be equipped with load gear apparatus for adjusting position, the load gear apparatus for adjusting position for adjust load gear with it is described
One end of the spacing of tested gear, the load gear apparatus for adjusting position is connected to the load gear mounting shaft, the other end
It is threadedly connected to the gear-box.
Preferably, further include the load arm of force, the load arm of force is along perpendicular to the load gear mounting shaft extending direction
It is installed on one end of the load gear mounting shaft.
Preferably, the end of the load arm of force is placed on the end of the load gear mounting shaft.
Preferably, the load gear apparatus for adjusting position includes two supporting legs, and two supporting legs are located at the load
Gear both sides, and one end of two supporting legs is all connected with the load gear mounting shaft, the other end of described two supporting legs passes through company
Socket part connects, and the outside connection of the interconnecting piece adjusts one end of indexing screw, the other end screw thread for adjusting indexing screw
It is connected to the gear-box and passes through the gear-box.
Preferably, one end that the adjusting indexing screw is located at outside the gear-box is cased with rotating handle, rotates the rotation
It changes hands handle and indexes screw to rotate the adjusting, to drive the load gear mounting shaft to move in the horizontal direction.
Preferably, the circumferencial direction for adjusting indexing screw is located on the gear-box to be provided with for recording the tune
Section indexing screw moves in the horizontal direction the scale value of distance.
Preferably, the both sides of the gear-box are respectively equipped with slot hole, and the both ends of the load gear mounting shaft are installed respectively
In in the slot hole.
Preferably, the end of the tested gear mounting shaft is cased with axle sleeve, and is supported in the gear by the axle sleeve
Case.
Preferably, further include that the load gear includes base portion and takes turns teeth portion, detachable between wheel teeth portion and the base portion
Connection；The quantity of the wheel teeth portion is multiple, and the tooth profiles in multiple wheel teeth portion are different.
Preferably, further include torque sensor, the torque sensor and the tested gear are coaxially connected, for detecting
The torque being applied on the tested gear tooth.
The invention has the advantages that：
Gear fatigue test fixture provided by the invention applies load by loading gear to tested gear, and is adding
The side setting load gear apparatus for adjusting position of gear is carried, load gear apparatus for adjusting position is for adjusting load gear and institute
The spacing for stating tested gear, by adjusting the spacing of load gear and the tested gear, thus it is possible to vary load gear and be tested
The contact position of gear, and then the stress point of tested gear can be changed, it realizes tired to each stress point progress for being tested gear
The purpose of labor experiment.
Description of the drawings
Fig. 1 is the structural schematic diagram for the gear fatigue test fixture that embodiment of the present invention provides；
Fig. 2 is the structural schematic diagram of the gear fatigue test fixture with gear-box.
Fig. 3 is the structural schematic diagram of tested gear fatigue node location.
Reference sign：
10- is tested gear mounting shaft 20- torque sensors 30- load gears 40- and is tested the 60- displacements of gear 50- gear-boxes
It adjusts indexing screw 70- and loads the arm of force.
Specific implementation mode
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Fig. 1-Fig. 3 is please referred to, Fig. 1 is the structural schematic diagram for the gear fatigue test fixture that embodiment of the present invention provides；
Fig. 2 is the structural schematic diagram of the gear fatigue test fixture with gear-box；Fig. 3 is the structure of tested gear fatigue node location
Schematic diagram.
As Figure 1-Figure 2, gear fatigue test fixture provided by the invention, including gear-box 50, tested gear installation
Axis 10, load gear 30, load gear mounting shaft, the load arm of force 70, load charger, load gear apparatus for adjusting position；
The tested gear mounting shaft 10, the load gear mounting shaft are arranged side by side, and the both ends of the tested gear mounting shaft 10,
The both ends of the load gear mounting shaft are supported in the gear-box 50；The load arm of force 70 is along perpendicular to the loaded teeth
Wheel installation axle extending direction is installed on one end of the load gear mounting shaft, and the load gear apparatus for adjusting position is for adjusting
One end of the spacing of whole load gear 30 and the tested gear 40, the load gear apparatus for adjusting position is connected to described add
Gear mounting shaft is carried, the other end is threadedly connected to the gear-box 50；The load charger is used for the load arm of force
Apply static load.
Gear fatigue test fixture provided by the invention applies load by loading gear 30 to tested gear 40, and
In the side setting load gear apparatus for adjusting position of load gear 30, load gear apparatus for adjusting position is for adjusting loaded teeth
The spacing of wheel 30 and the tested gear 40, by adjusting the spacing of load gear 30 and the tested gear 40, thus it is possible to vary
The contact position of gear 30 and tested gear 40 is loaded, and then the stress point of tested gear 40 can be changed, is realized to being tested tooth
Each stress point of wheel 40 carries out the purpose of fatigue test.
Gear fatigue test fixture provided by the invention is tested with the closed box of the simulation gear modification of new design
Tooling realizes the fatigue endurance test of the practical set, technique, abrasion, edge load of simulation gear pair in transmission process.It surveys
Fatigue behaviour, crack initiation position, the crackle of fixed gear, metal material and metal component under drawing, pressure or tension and compression alternating load
Spreading rate etc..It is equipped with corresponding fixture simultaneously, becomes and can carry out tooth bending fatigue life test, bar samples are drawn
Press the multifunctional test machine of fatigue test, plate tensile sample repeated tension and compression test, the fatigue test of 3 points/four-point bending.
In above-mentioned basic embodiment, when carrying out fatigue test to tested gear 40, first, tested gear 40 is loaded
On tested gear mounting shaft 10, and in loading process, tested gear 40 is enable to be engaged with load gear 30；Thereafter, sharp
It is rotated with driving mechanism drive load gear 30, load gear 30 can drive the tested gear engaged in rotation process
40 rotate synchronously, and load the gear teeth striking of gear 30 on the gear teeth of tested gear 40, torque is input to tested gear 40, from
And the durability degree and reliability for being tested gear 40 can be tested, final assessment and the safety coefficient for determining tested gear 40
And actual life etc..
As shown in figure 3, being easy to indicate at node C according to the parameter in conventional design theory and Hertz formula, therefore take
Contact stress at node C is experimental test foundation, the test actually maximal bending moment of the boundary point D of produce maximum stress danger.
But in view of gear manufacture, the influence of installation error and convenience of calculation can approximately think to overlap for the gear of general precision
Degree is 1.At this point, all load are undertaken by a pair of of tooth, and using tooth top as load position, simulated by test tool fixture real
Now load.
The gear fatigue test fixture that present embodiment provides, by by driving mechanism drive load gear 30, in turn
Power and torque are acted on by load gear 30 on the end face of the gear teeth of tested gear 40, to which test is tested the durable of gear 40
Degree and reliability.It is simpler compared with the existing technical solution using pressure head tooling top pressure on the gear teeth of tested gear,
It is more laborsaving.
Specifically, the driving mechanism can be the automatic driving mechanisms such as motor, rotary cylinder；In addition it is also possible to for can
Rotating bar, the rotatable bar are connect with load gear 30, drive the rotatable bar to rotate by manpower manual, and then described in driving
Gear 30 is loaded to rotate.
Meanwhile when driving mechanism is motor, rotary cylinder etc., compared with prior art, being applied to the tested gear
Torque on 40 can reach 10000 Ns of rice or higher, and frequency can reach 100-250Hz or higher, so as in bigger
In the range of fatigue test is carried out to tested gear 40.
As shown in Fig. 2, driving, which is recorded a demerit, is also provided with the load arm of force 70 between 20 and load gear 30, pass through the load
The arm of force 70 transfers a torque on load gear 30, and then is transferred on tested gear 40.
On above-mentioned basic embodiment, it is preferable that the gear fatigue test fixture includes torque sensor 20, institute
It states torque sensor 20 and the tested gear 40 is coaxially connected, for detecting the torsion being applied on 40 gear teeth of tested gear
Square.When load gear 30 drives and is tested the rotation of gear 40, the torque sensor 20 can obtain the gear teeth of load gear 30
It is applied to the value of the torque on tested gear 40, according to the numerical value of the torque of acquisition, can preferably determine tested gear 40
The bending fatigue strength of the gear teeth.
It on above-mentioned basic embodiment, can also be further improved, to realize superior technique effect.Below to this
The preferred embodiment for inventing the gear fatigue test fixture provided is described and illustrates.
In a preferred embodiment of gear fatigue test fixture, the load gear 30 includes base portion 300 and wheel
Teeth portion 301 is detachably connected between the wheel teeth portion 301 and base portion 300；On this basis, the quantity of the wheel teeth portion 301 is
It is multiple, and the tooth profiles in multiple wheel teeth portion 301 are different.Specifically, the tooth profiles difference of multiple wheel teeth portion 301 is finger wheel
The number of teeth, modulus, tooth pitch, space width, flank profil of teeth portion 301 etc. are used for stating at least one of each parameter of gear parameter not
Together.
Setting can replace different wheel teeth portion 301 in this way, and load gear 30 is enable to have different flank profils, so as to
Load gear 30 is enough set to apply required power and torsion to the suitable position on 40 gear teeth of tested gear with different flank profils
Square carries out fatigue test to tested gear.
In above-mentioned basic embodiment and first preferred embodiment, the load gear 30 and tested gear 40
Tooth profiles are identical.Specifically, it refers to loading gear 30, the number of teeth of tested gear 40, modulus, tooth pitch, tooth that tooth profiles are identical
Groove width, flank profil etc. are used for stating the parameters all same in each parameter of gear.Setting can ensure to load gear 30 in this way
There can be better engagement between tested gear 40, to obtain more accurately test result.
During carrying out fatigue test to tested gear, along the gear teeth meshing involute enveloping surface of tested gear 40
Different contact points loaded is chosen, by adjusting the assembly center between load gear 30 and tested gear 40 away from can be with
Simulation applies the load of tangential, radial direction, normal direction and axial (for helical gear and herringbone bear), simulates the practical dress of gear pair
Match, the test situation of technique, abrasion and edge load in transmission process.
In the third preferred embodiment of gear fatigue test fixture, the gear fatigue test fixture further includes adjusting
Detent mechanism is saved, the adjusting detent mechanism is for adjusting 30 gear teeth of load gear relative to 40 gear teeth of tested gear
Angle.
Specifically, as shown in Fig. 2, the detent mechanism that adjusts can be that the displacement being arranged on gear-box 50 adjusts indexing
Screw 60 adjusts indexing screw 60 by rotating to conjugate, changes angle of load 30 gear teeth of gear relative to 40 gear teeth of tested gear
Degree.
In the preferred embodiment, angle of load 30 gear teeth of gear relative to 40 gear teeth of tested gear is adjusted, it can be with
Make the engagement operating mode for having different between load gear 30 and tested gear 40, and obtain best one or more engagement operating modes,
So as to carry out fatigue test to tested gear 40 under different engagement operating modes, more accurately test result is obtained.
In third preferred embodiment, further, the adjusting detent mechanism is to the load gear tooth phase
Stepless changing is adjusted to for the angle of the tested gear tooth.Setting can continuously adjust load gear 30 and take turns in this way
Angle of the tooth between 40 gear teeth of tested gear, it is more preferably and more accurate to obtain to obtain better tooth matching angle
Test result.
On the basis of third preferred embodiment, it is further preferred that the adjusting detent mechanism further includes record
Device, the logger are used to record the angle of load 30 gear teeth of gear.In this way setting can after obtaining test result,
By one or more result datas of acquisition with load gear 30 angle relation and be mapped, to obtain needed for experiment tie
The corresponding angle-data of fruit.
In conclusion gear fatigue test device provided by the invention, by by driving mechanism drive load gear 30,
And then on the end face for the gear teeth that power and torque are acted on to tested gear 40 by load gear 30, to which test is tested gear 40
Durability degree and reliability.It is simpler compared with the existing technical solution using pressure head tooling top pressure on the gear teeth of tested gear
It is single, it is also more laborsaving.
The structure, feature and effect of the present invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Change made by thinking, or is revised as the equivalent embodiment of equivalent variations, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (10)
1. a kind of gear fatigue test fixture, which is characterized in that including tested gear mounting shaft, load gear, load gear peace
Fill axis, gear-box；The tested gear mounting shaft, the load gear mounting shaft are arranged side by side, and the tested gear installation
The both ends of axis, the both ends for loading gear mounting shaft are supported in the gear-box；The outside of the load gear, which is equipped with, to be added
Gear position regulating device is carried, the load gear apparatus for adjusting position is for adjusting between load gear and the tested gear
Away from one end of the load gear apparatus for adjusting position is connected to the load gear mounting shaft, and the other end is threadedly connected to institute
State gear-box.
2. gear fatigue test fixture according to claim 1, which is characterized in that further include the load arm of force, the load
The arm of force is along the one end for being installed on the load gear mounting shaft perpendicular to the load gear mounting shaft extending direction.
3. gear fatigue test fixture according to claim 1, which is characterized in that the end of the load arm of force is placed on institute
State the end of load gear mounting shaft.
4. gear fatigue test fixture according to claim 1, which is characterized in that the load gear apparatus for adjusting position
Including two supporting legs, two supporting legs are located at the load gear both sides, and one end of two supporting legs is all connected with the load
The other end of gear mounting shaft, described two supporting legs is connected by interconnecting piece, and the outside connection of the interconnecting piece adjusts indexing spiral shell
One end of nail, the other end for adjusting indexing screw are threadedly connected to the gear-box and pass through the gear-box.
5. gear fatigue test fixture according to claim 4, which is characterized in that the adjusting indexing screw is located at described
One end outside gear-box is cased with rotating handle, rotates the rotating handle to rotate the adjusting and indexes screw, described in driving
Load gear mounting shaft moves in the horizontal direction.
6. gear fatigue test fixture according to claim 4 or 5, which is characterized in that be located on the gear-box described
The circumferencial direction for adjusting indexing screw is provided with for recording the scale for adjusting indexing screw and moving in the horizontal direction distance
Value.
7. gear fatigue test fixture according to claim 1, which is characterized in that the both sides of the gear-box are respectively equipped with
The both ends of slot hole, the load gear mounting shaft are respectively arranged in the slot hole.
8. gear fatigue test fixture according to claim 1, which is characterized in that the end of the tested gear mounting shaft
It is cased with axle sleeve, and the gear-box is supported in by the axle sleeve.
9. gear fatigue test fixture according to claim 1, which is characterized in that further include that the load gear includes
Base portion and wheel teeth portion, are detachably connected between wheel teeth portion and the base portion；The quantity of the wheel teeth portion is multiple, and multiple gear teeth
Tooth profiles in portion are different.
10. gear fatigue test fixture according to claim 1, which is characterized in that further include torque sensor, the torsion
Square sensor and the tested gear are coaxially connected, for detecting the torque being applied on the tested gear tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795880.4A CN108627334A (en) | 2018-07-19 | 2018-07-19 | gear fatigue test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810795880.4A CN108627334A (en) | 2018-07-19 | 2018-07-19 | gear fatigue test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108627334A true CN108627334A (en) | 2018-10-09 |
Family
ID=63689094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810795880.4A Pending CN108627334A (en) | 2018-07-19 | 2018-07-19 | gear fatigue test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108627334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261251A (en) * | 2019-07-31 | 2019-09-20 | 上海交通大学 | Flywheel disc rotary bending fatigue test system |
| CN112857981A (en) * | 2020-12-28 | 2021-05-28 | 国营第六一六厂 | Clamp for testing strength of gear teeth of cylindrical straight-tooth gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110261251A (en) * | 2019-07-31 | 2019-09-20 | 上海交通大学 | Flywheel disc rotary bending fatigue test system |
| CN110261251B (en) * | 2019-07-31 | 2020-11-06 | 上海交通大学 | Flywheel disc rotating bending fatigue test system |
| CN112857981A (en) * | 2020-12-28 | 2021-05-28 | 国营第六一六厂 | Clamp for testing strength of gear teeth of cylindrical straight-tooth gear |
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Application publication date: 20181009 |
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