CN108856910B - A kind of method and device of polishing gear edge by use - Google Patents
A kind of method and device of polishing gear edge by use Download PDFInfo
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- CN108856910B CN108856910B CN201810956856.4A CN201810956856A CN108856910B CN 108856910 B CN108856910 B CN 108856910B CN 201810956856 A CN201810956856 A CN 201810956856A CN 108856910 B CN108856910 B CN 108856910B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F19/00—Finishing gear teeth by other tools than those used for manufacturing gear teeth
- B23F19/10—Chamfering the end edges of gear teeth
- B23F19/102—Chamfering the end edges of gear teeth by milling
- B23F19/104—Chamfering the end edges of gear teeth by milling the tool being a hob
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention provides a kind of method and device of polishing gear edge by use, the method for polishing gear edge by use is the following steps are included: step 1, the initial tip relief position for determining gear and the first deformation quantity of gear, and using initial tip relief position as starting point；Step 2 determines the deformation quantity gear after tip relief engages next time when, carries out tip relief to gear from starting point, and obtain the gear after tip relief；Step 3 repeats step 2, until the gear after tip relief reaches boundary condition；Wherein, the maximum tip relief amount of gear is rolling circle circular pitch deviation, the first deformation quantity of gear is formed by stacking with all single deformation quantities of gear after tip relief.The method of polishing gear edge by use provided by the invention improves the accuracy of the maximum tip relief amount of determining gear.
Description
Technical field
The present invention relates to gear modification technical field more particularly to a kind of method and devices of polishing gear edge by use.
Background technique
Traction gear is the important component of locomotive, and the output torque of traction motor is passed to wheel pair by it, is made
Locomotive can be run.Traction gear directly affects vibration, noise and the safe operation of locomotive.With production and science and technology
Progress, locomotive is just towards high speed, overload direction development.Locomotive traction gear load is big, speed is high, operating condition is complicated, due to manufacturing,
Installation error and the loaded deformation of the gear teeth etc., lead to occur phenomena such as impact vibration, noise in Meshing Process of Spur Gear, so design tooth
It should ensure that higher bending strength, contact strength, bonding strength when wheel, while should also reduce gear teeth meshing by tip relief technology
When dynamic loading and vibration, noise, guarantee the good riding quality of gear.
Present polishing gear edge by use mostly uses empirical formula method combination FEM calculation to carry out the determination of tip relief amount, for example, applying
Number: 201610143790.8, entitled " a kind of's involute bevel gears tooth end relief and parametric modeling method "
Patent calculates the gear amount of practicing Buddhism or Taoism and correction of the flank shape length by finite element software.
But existing polishing gear edge by use mostly uses empirical equation and Finite element arithmetic tip relief amount, tip relief amount counting accuracy
It is low.
Summary of the invention
The present invention provides a kind of method and device of polishing gear edge by use, solve existing polishing gear edge by use mostly use empirical equation and
Finite element arithmetic tip relief amount, the low problem of tip relief amount counting accuracy.
The present invention provides a kind of methods of polishing gear edge by use, comprising the following steps:
Step 1, the initial tip relief position for determining gear and the first deformation quantity of gear, and using initial tip relief position as rise
Point；
Step 2 determines the deformation quantity gear after tip relief engages next time when, carries out tip relief to gear from starting point, and obtain
Obtain tip relief backgear；
Step 3 repeats step 2, until the gear after tip relief reaches boundary condition；Wherein, the maximum tip relief of gear
Amount is rolling circle circular pitch deviation, the first deformation quantity of gear is formed by stacking with all single deformation quantities of gear after tip relief.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention, after step 3, method further include: into
Row tip relief quality restriction.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention, after step 3, method further include: into
Row tolerance is examined.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention determines the tip relief amount of gear, specific to wrap
It includes:
Tip relief amount is determined according to formula (1)；
Cmax=Pbt+δa (1)
In formula (1), CmaxFor the maximum tip relief amount of gear, PbtFor the base pitch deviation of gear, δaFor the first shape of gear
The superposition value of all single deformation quantities of gear after variable and tip relief.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention determines the initial tip relief position of gear,
It specifically includes:
Radius of circle where determining initial tip relief position according to formula (2) and formula (3)；
L=rb×(tanα-tanα0)-(ε-1)pb (3)
In formula (2) and formula (3), R is radius of circle where initial tip relief position, rbFor the base radius of gear, r is tooth
The pitch radius of wheel, α0For the angle of engagement of gear, α is the outside circle pressure angle of gear, and ε is registration, pbFor the base pitch of gear, d
For the modulus of 0.1-0.15 times of gear；
Radius of circle where initial tip relief position is initial tip relief position.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention carries out tip relief quality restriction, specific to wrap
It includes:
Determine load distribution among teeth ratio of the gear after tip relief；
Tip relief quality of the gear after tip relief is examined according to load distribution among teeth ratio.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention determines between cog of the gear after tip relief
Weight-distribution ratio specifically includes:
Load distribution among teeth ratio is determined according to formula (4)；
In formula (4),Respectively participate in the rodent population 1 of engagement and the weight-distribution ratio of rodent population 2；
k1、k2The respectively synthesis mesh stiffness of rodent population 1 and engagement rodent population 2；Δ1、Δ2Respectively rodent population 1 and engagement
Tooth to 2 profiling quantity size；wmFor facewidth direction mean unit linear load.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention carries out tolerance inspection, specifically includes:
Determine form of gear tooth tolerance, tolerance, tip relief starting point tooth form tolerance and tooth top tip relief tolerance at the starting point of meshing
It is equal to form of gear tooth tolerance, tooth form tolerance is the form of gear tooth tolerance of half at pitch circle.
As a kind of optional mode, the method for polishing gear edge by use provided by the invention, boundary condition are as follows: gear bears five times
Maximum Contact Stress of Gear and maximum Dedenda's bending stress when continuing torque should be respectively smaller than gear maximum tooth allowed to bear
The registration of face contact stress and maximum Dedenda's bending stress and gear is greater than 1.
The present invention also provides a kind of tip relief devices, including tip relief component and processor, processor to connect with tip relief component,
Processor carries out tip relief for executing above-mentioned polishing gear edge by use method, to control tip relief component to gear.
The method and device of polishing gear edge by use provided by the invention passes through the initial tip relief position for determining gear and gear first
First deformation quantity, and using initial tip relief position as starting point.Then the deformation quantity gear after determining tip relief engages next time when,
Tip relief is carried out to gear from starting point, and obtains the position after tip relief, the position after tip relief is the starting point of tip relief next time.Finally weigh
The deformation quantity multiple gear executed after determining tip relief engages next time when, until the gear after tip relief reaches boundary condition；Gear
Maximum tip relief amount be that rolling circle circular pitch deviation, the first deformation quantity of gear are superimposed with all single deformation quantities of the gear after tip relief
It forms.The method of polishing gear edge by use provided by the invention improves the accuracy of the maximum tip relief amount of determining gear.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to make simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the method for polishing gear edge by use provided in an embodiment of the present invention；
Fig. 2 is the partial schematic diagram of the method middle gear of polishing gear edge by use provided in an embodiment of the present invention；
Fig. 3 is the load distribution among teeth figure in the method for polishing gear edge by use provided in an embodiment of the present invention；
Fig. 4 is the drawing of tolerance range in the method for polishing gear edge by use provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the device of polishing gear edge by use provided in an embodiment of the present invention.
Description of symbols:
The long flank profil of the tip portion of 10-gears；
The long flank profil of the pitch circle part of 20-gears；
30-load distribution among teeth figures；
40-tip relief tolerance ranges；
50-tip relief components；
60-processors.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Locomotive traction gear load is big, speed is high, operating condition is complicated, needs to improve the engagement product of gear by tip relief technology
Matter.At present without specific tip relief amount calculation method, without specific tolerance range representation method, no specific tip relief starting point calculating side
Method.Present polishing gear edge by use mostly uses the determination of empirical formula method combination FEM calculation progress tip relief amount, but big due to locomotive
The case where tractive force, multi-state, existing tip relief method can not improve the meshing performance of gear to greatest extent, reduce gear
Rotational noise and vibration.Test rating of the load distribution among teeth as tip relief effect is nibbled at present without Method for Accurate Calculation in bidentate
It mostly uses empirical value to carry out load distribution when conjunction, i.e., is allocated by 40%~60%~100%~40%~60%.
Such as: paper " the correction of the flank shape noise-reducing design of II type locomotive traction gear of SS8 " and " Gear profile modification parameter to gearbox pass
The research that dynamic characteristic influences " application experience formula calculates gear modification amount, and carries out correction of the flank shape to tooth top and tooth root simultaneously；Application
Number: 201610143790.8, denomination of invention " a kind of involute bevel gears tooth end relief and parametric modeling method " it is special
Benefit calculates the gear amount of practicing Buddhism or Taoism and correction of the flank shape length by finite element software；Application number: 201510564613.2, denomination of invention " is gradually opened
The optimization method of line straight-tooth gear correction of the flank shape " patent, by establishing finite element threedimensional model, primary election profiling quantity carries out finite element meter
It calculates, then carries out FEM calculation again after secondary determining profiling quantity, optimal profiling quantity is calculated repeatedly with this；Application number:
201510316816.X, a kind of patent of denomination of invention " method of cycloid gear profile modification ", applied mathematics optimization design
Thought by establishing gear motion equation, with the minimum target of flexible deformation at meshing point, with the minimum target of transmission error, with
The minimum target of contact stress carries out correction of the flank shape with the minimum target of contact point stress；Application number: 201710040488.4, invention
A kind of patent of title " methods of mending gear " is determined with the tooth top amount of practicing Buddhism or Taoism Ca=0.002 × modulus, tooth root profiling quantity Cd=
0.0025 × modulus, the tooth length direction profiling quantity CI=0.0005 × facewidth；Paper " repair by the locomotive traction gear flank profil based on APDL
Conformal analysis " by applying the APDL language of finite element to the gear progress stress collection neutralization flank of tooth shock calculation after correction of the flank shape, and with
Its test stone as correction of the flank shape effect；Application number: 201510138706.9, denomination of invention " a kind of locomotive traction with correction of the flank shape gradually
Burst at the seams roller gear and its correction method and its application " patent, only propose profiling quantity according to facewidth LOAD FOR and obtain do not have
There are specific correction method, correction of the flank shape starting point and correction of the flank shape length；Master's thesis " bullet train transmission gear flank profil correction of the flank shape and cabinet
Optimization design " using the method calculating profiling quantity of ISO formula and finite element combination, and modification curve has been determined.
To solve the above-mentioned problems, the present invention provides a kind of methods of polishing gear edge by use, first by determining the first of gear
Beginning tip relief position and the first deformation quantity of gear, and using initial tip relief position as starting point.Then one under the gear after determining tip relief
Deformation quantity when secondary engagement carries out tip relief to gear from starting point, and obtains the position after tip relief, and the position after tip relief is next time
The starting point of tip relief.Deformation quantity gear after finally repeating determining tip relief engages next time when, until the gear after tip relief
Reach boundary condition；The maximum tip relief amount of gear is the gear after rolling circle circular pitch deviation, the first deformation quantity of gear and tip relief
All single deformation quantities are formed by stacking.The method of polishing gear edge by use provided by the invention improves the maximum tip relief amount of determining gear
Accuracy.
The present invention is illustrated with the tip relief of locomotive traction gear, but the method for polishing gear edge by use of the invention is not limited to locomotive
The tip relief of traction gear.Fig. 1 is the flow chart of the method for polishing gear edge by use provided in an embodiment of the present invention；Fig. 2 is that the present invention is implemented
The partial schematic diagram of the method middle gear for the polishing gear edge by use that example provides.As shown in Figure 1, present embodiments providing a kind of polishing gear edge by use
Method, comprising the following steps:
Step 1, the initial tip relief position for determining gear and the first deformation quantity of gear, and using initial tip relief position as rise
Point.
In specific implementation, locomotive traction gear carries out tooth top tip relief simultaneously using driving gear and driven gear, and adopts
With long tooth profile correction, gentle rotational position errors and vibration and noise can be reduced to greatest extent.As shown in Fig. 2, can choose tooth
The long flank profil 10 of the tip portion of wheel carries out tip relief as initial tip relief position, also can choose the long tooth of the pitch circle part of gear
Exterior feature 20 carries out tip relief as initial tip relief position, and the present embodiment is not limited thereto.When locomotive traction gear is started to work, pass through
Driving gear and driven gear mesh stiffness calculate the loaded deformation quantity of driving gear and driven gear under the first operating condition, by it
As driving gear and the first deformation quantity of driven gear, according to driving gear and the first deformation quantity driving gear of driven gear and from
Moving gear wheel carries out first tip relief.Can also will driving gear and driven gear engagement preset time after, calculate driving gear and
The loaded deformation quantity of driven gear within a preset time, as driving gear and the first deformation quantity of driven gear.
Step 2 determines the deformation quantity gear after tip relief engages next time when, carries out tip relief to gear from starting point, and obtain
Gear after obtaining tip relief.
In specific implementation, after the first tip relief of gear, the gear teeth is calculated by driving gear and driven gear mesh stiffness and are existed
Loaded deformation quantity under second operating condition, deformation quantity when being engaged as gear next time, when being engaged according to gear next time
Deformation quantity first tip relief is carried out to gear.Master can also be calculated by driving gear and driven gear after engaging preset time
The loaded deformation quantity of moving gear and driven gear within a preset time, is engaged next time as driving gear and driven gear
When deformation quantity.
Step 3 repeats step 2, until the gear after tip relief reaches boundary condition；The maximum tip relief amount of gear is tooth
Wheel base pitch deviation, the first deformation quantity of gear are formed by stacking with all single deformation quantities of gear after tip relief.
Specifically, step 2 is repeated, until the gear after tip relief reaches boundary condition；Determine the maximum tip relief of gear
Amount, the maximum tip relief amount of gear are all single shapes of gear after rolling circle circular pitch deviation, the first deformation quantity of gear and tip relief
Variable is formed by stacking, and carries out tip relief to gear according to the maximum tip relief amount and initial tip relief position of gear, wherein polishing gear edge by use amount
Less than or equal to the maximum tip relief amount of gear.
The method of polishing gear edge by use provided by the invention passes through the initial tip relief position for determining gear and the first shape of gear first
Variable, and using initial tip relief position as starting point.Then the deformation quantity gear after determining tip relief engages next time when, from starting point
Tip relief is carried out to gear, and obtains the position after tip relief, the position after tip relief is the starting point of tip relief next time.Finally repeat
Deformation quantity gear after determining tip relief engages next time when, until the gear after tip relief reaches boundary condition；The maximum of gear
Tip relief amount is rolling circle circular pitch deviation, the first deformation quantity of gear is formed by stacking with all single deformation quantities of gear after tip relief.
The method of polishing gear edge by use provided by the invention improves the accuracy of the maximum tip relief amount of determining gear.
Further, the method for polishing gear edge by use provided in this embodiment, after step 3, method further include: carry out tip relief product
Quality inspection is tested.
Tip relief is carried out to gear according to the maximum tip relief amount and initial tip relief position of gear, after polishing gear edge by use, is needed to tooth
Take turns tip relief whether qualification is detected, this implementations by tip relief quality restriction and/tolerance examine to polishing gear edge by use whether qualification into
Row detection.
In concrete implementation mode, the method for polishing gear edge by use provided in this embodiment determines the tip relief amount of gear, specifically
Include:
Tip relief amount is determined according to formula (1)；
Cmax=Pbt+δa (1)
In formula (1),
CmaxFor the maximum tip relief amount of gear,
PbtFor the base pitch deviation of gear,
δaFor the superposition value of all single deformation quantities of gear after the first deformation quantity of gear and tip relief.
That is, δaIt is calculated according to formula (5)
δa=δ1+δ2...+δn (5)
In formula (5), δ1For the first deformation quantity of gear, δ2For second of deformation quantity of gear, δnFor gear n-th deformation quantity,
N is the positive integer greater than 2.
Specifically, by the loaded deflection of the gear teeth meshing Rigidity Calculation gear teeth, it is loaded with locomotive the first condition calculating gear teeth
Deformation quantity at pitch circle (the namely first deformation quantity of gear) δ afterwards1, gear teeth profile removal deformation quantity δ1After be contacted again, second
Deformation quantity (namely second of deformation quantity of gear) δ under operating condition at loaded rear pitch circle2, and so on, obtain CmaxFor gear
Maximum tip relief amount.
In specific implementation, the method for polishing gear edge by use provided in this embodiment determines the initial tip relief position of gear, specifically
Include:
Radius of circle where determining initial tip relief position according to formula (2) and formula (3)；
L=rb×(tanα-tanα0)-(ε-1)pb (3)
In formula (2) and formula (3),
R is radius of circle where initial tip relief position,
rbFor the base radius of gear,
R is the pitch radius of gear,
α0For the angle of engagement of gear,
α is the outside circle pressure angle of gear,
ε is registration,
pbFor the base pitch of gear,
D is the modulus of 0.1-0.15 times of gear；
Radius of circle where initial tip relief position is initial tip relief position.
Wherein, L is calculated by formula (3) in formula (2).
As a kind of optional mode, the method for polishing gear edge by use provided in this embodiment carries out tip relief quality restriction, specifically
Include:
Determine load distribution among teeth ratio of the gear after tip relief；
Tip relief quality of the gear after tip relief is examined according to load distribution among teeth ratio.
Determine load distribution among teeth ratio of the gear after tip relief, the inspection as the maximum tip relief amount theoretical calculation stage refers to
Mark.
Fig. 3 is the load distribution among teeth figure in the method for polishing gear edge by use provided in an embodiment of the present invention.As shown in figure 3, making
For a kind of optional mode, the method for polishing gear edge by use provided in this embodiment determines load distribution among teeth of the gear after tip relief
Ratio specifically includes:
Load distribution among teeth ratio is determined according to formula (4)；
In formula (4),
Respectively participate in the rodent population 1 of engagement and the weight-distribution ratio of rodent population 2；
k1、k2The respectively synthesis mesh stiffness of rodent population 1 and rodent population 2；
Δ1、Δ2The respectively profiling quantity size of rodent population 1 and rodent population 2；
wmFor facewidth direction mean unit linear load.
It should be noted that gear there are two pairs of teeth (four) to simultaneously participate in engagement when engaging, therefore it is referred to as engaging tooth
To 1 and rodent population 2.Between 1 and 2, driving gear and driven gear engagement process are in locomotive traction gear registration always
Single bidentate alternately engages.The mutation of gear teeth load, load distribution among teeth as shown in Figure 3 will be will appear in alternately engagement process
△ F1 and △ F2 in Figure 30, Fig. 3 is gear teeth meshing load Sudden Changing Rate, and the size of different operating loading Sudden Changing Rates is as tip relief product
The evaluation index of matter.X is double-teeth toothing region, and Y is monodentate region of engagement, and Z is theoretical tooth engagement area.
In double-teeth toothing region load by two pairs of tooth shareds, calculate when load distribution among teeth that two pairs of meshing gears are equivalent
For two spring shared load being in parallel simultaneously, because gear teeth meshing rigidity is time-varying, therefore weight distribution factor
It is time-varying, following weight-distribution ratio formula is determined according to spring performance.
The method of polishing gear edge by use provided in this embodiment, after step 3, method further include: carry out tolerance inspection.Fig. 4 is
Drawing of tolerance range in the method for polishing gear edge by use provided in an embodiment of the present invention.As shown in figure 4, as a kind of optional mode, this
The method for the polishing gear edge by use that embodiment provides,
Tolerance inspection is carried out, tolerance range includes tooth form tolerance, tolerance, tip relief starting point tolerance and tooth top tip relief are public at pitch circle
Difference.
Specifically, the method for polishing gear edge by use provided in this embodiment, carries out tolerance inspection, specifically includes:
Determine form of gear tooth tolerance, tolerance, tip relief starting point tooth form tolerance and tooth top tip relief tolerance at the starting point of meshing
It is equal to form of gear tooth tolerance, tooth form tolerance is the form of gear tooth tolerance of half at pitch circle.After tolerance inspection is Gear Processing
Examine product whether He Ge standard or index.
Tip relief tolerance range 40 indicates that tolerance range is divided into four key points, R using K-type figure as shown in Figure 41To engage
Radius value at initial point, R2For radius value at pitch circle, R3Tip relief starting point radius value, R4Radius value at tooth top.In tooth form tolerance range
Each critical tolerance value: tolerance T at the starting point of meshing in K-type figure as shown in Figure 41For form of gear tooth tolerance ff, i.e. T1=ff；For
Impact and opposite sliding when gear being avoided to engage, need tooth form tolerance T at strict control pitch circle2, therefore provide T2=ff/2；
Tip relief starting point tooth form tolerance T3, tooth top tip relief tolerance T4, T3=T4=ff, most overhaul amount Cmax。
As a kind of optional mode, the method for polishing gear edge by use provided in this embodiment, boundary condition are as follows: gear bears five
Maximum Contact Stress of Gear and maximum Dedenda's bending stress when continuing torque again should be respectively smaller than gear maximum allowed to bear
The registration of Contact Stress of Gear and maximum Dedenda's bending stress and gear is greater than 1.
The method of polishing gear edge by use provided by the above embodiment determines locomotive traction gear tooth top maximum tip relief amount.Locomotive is led
Draw gear teeth tips maximum tip relief amount to determine using deflection circulation superposition calculation method, with traction gear when locomotive traction motor short circuit
For the torque of receiving as boundary condition, the gear after tip relief bears the maximum Contact Stress of Gear and maximum when five times of lasting torques
Dedenda's bending stress should be respectively smaller than the requirement of gear maximum Contact Stress of Gear and maximum Dedenda's bending stress allowed to bear,
And the registration of gear is greater than 1.Determine test rating of the load distribution among gear teeth as tip relief quality.Determine locomotive traction gear
The position of tip relief mode and tip relief starting point.Locomotive traction gear carries out tooth top simultaneously using driving gear and driven gear and repairs
Edge, the gear teeth use the wealthy tip relief of long tooth, can to greatest extent gentle rotational position errors and reduce vibration and noise.Determine locomotive traction
The form of gear tooth checks the representation method of tolerance range and the size of each critical tolerance value.Determine Transverse Load distribution calculation method and
Transverse Load Sudden Changing Rate is as tip relief test rating.The method of polishing gear edge by use provided by the above embodiment improves to greatest extent
The meshing performance of gear reduces rotational noise and the vibration of gear.
Fig. 5 is the structural schematic diagram of the device of polishing gear edge by use provided in an embodiment of the present invention.As shown in figure 5, the present embodiment
A kind of tip relief device, including tip relief component 50 and processor 60 are additionally provided, processor 60 and tip relief component 50 connect, processor
60 for executing polishing gear edge by use method provided by the above embodiment, carries out tip relief to control tip relief component 50 to gear.
Wherein, polishing gear edge by use method is described in detail in above-described embodiment, and this is no longer going to repeat them for the present embodiment.
Optionally, tip relief component is selected using existing tip relief tools such as tip relief hobboing cutter, radiusing machines according to practical operation
Tip relief tool is selected, the present embodiment is not limited thereto.
In the description of description of the invention unless specifically defined or limited otherwise, the terms such as term " connection " should be done
It broadly understood, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection, it can also
To be electrical connection or can communicate with each other；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of method of polishing gear edge by use, which comprises the following steps:
Step 1, the initial tip relief position for determining gear and the first deformation quantity of the gear, and using the initial tip relief position as
Starting point；When the first deformation quantity of gear is that locomotive traction gear is started to work, engaged by driving gear and driven gear rigid
It is that will lead that degree, which calculates the loaded deformation quantity or the first deformation quantity of the gear of driving gear and driven gear under the first operating condition,
After moving gear and driven gear engagement preset time, the loaded deformation of driving gear and driven gear within a preset time is calculated
Amount；
Step 2 determines the deformation quantity gear after tip relief engages next time when, repairs from the starting point to the gear
Edge, and obtain the gear after tip relief；
Step 3 repeats step 2, until the gear after tip relief reaches boundary condition；Wherein, the maximum of the gear
Tip relief amount is all single deformation of the gear after the rolling circle circular pitch deviation, the first deformation quantity of the gear and tip relief
Amount is formed by stacking.
2. the method for polishing gear edge by use according to claim 1, which is characterized in that after the step 3, the method is also wrapped
It includes: carrying out tip relief quality restriction.
3. the method for polishing gear edge by use according to claim 1, which is characterized in that after the step 3, the method is also wrapped
It includes: carrying out tolerance inspection.
4. the method for polishing gear edge by use according to claim 1, which is characterized in that the maximum tip relief amount of the gear, specifically
Include:
The maximum tip relief amount of the gear is determined according to formula (1)；
Cmax=Pbt+δa (1)
In formula (1), CmaxFor the maximum tip relief amount of the gear, PbtFor the base pitch deviation of the gear, δaFor the tooth
The superposition value of all single deformation quantities of the gear after taking turns first deformation quantity and tip relief；
Wherein,
δaIt is calculated according to formula (5)
δa=δ1+δ2...+δn (5)
In formula (5), δ1For the first deformation quantity of gear, δ2For second of deformation quantity of gear, δnFor gear n-th deformation quantity, n is
Positive integer greater than 2.
5. the method for polishing gear edge by use according to claim 2, which is characterized in that the initial tip relief position of the determining gear
It sets, specifically includes:
Radius of circle where determining initial tip relief position according to formula (2) and formula (3)；
L=rb×(tanα-tanα0)-(ε-1)pb (3)
In formula (2) and formula (3), R is radius of circle where the initial tip relief position, rbFor the base radius of the gear, r
For the pitch radius of the gear, α0For the angle of engagement of the gear, α is the outside circle pressure angle of the gear, and ε is to be overlapped
Degree, pbFor the base pitch of the gear, d is the modulus of the 0.1-0.15 times of gear；
Radius of circle where the initial tip relief position is the initial tip relief position.
6. the method for polishing gear edge by use according to claim 2, which is characterized in that the progress tip relief quality restriction, specifically
Include:
Determine load distribution among teeth ratio of the gear after tip relief；
Tip relief quality of the gear after tip relief is examined according to the load distribution among teeth ratio.
7. the method for polishing gear edge by use according to claim 6, which is characterized in that the determination gear is after tip relief
Load distribution among teeth ratio, specifically includes:
The load distribution among teeth ratio is determined according to formula (4)；
In formula (4),Respectively participate in the rodent population 1 of engagement and the weight-distribution ratio of rodent population 2；k1、k2
The respectively synthesis mesh stiffness of rodent population 1 and rodent population 2；Δ1、Δ2Respectively rodent population 1 and rodent population 2 is repaired
Shape amount size；wmFor facewidth direction mean unit linear load.
8. the method for polishing gear edge by use according to claim 3, which is characterized in that the progress tolerance inspection specifically includes:
Determine form of gear tooth tolerance, tolerance, tip relief starting point tooth form tolerance and tooth top tip relief tolerance are impartial at the starting point of meshing
Tooth form tolerance is the form of gear tooth tolerance of half at the form of gear tooth tolerance, pitch circle.
9. the method for polishing gear edge by use according to claim 1, which is characterized in that the boundary condition are as follows: the gear is held
Maximum Contact Stress of Gear and maximum Dedenda's bending stress when by five times of lasting torques should be respectively smaller than the gear and allow to hold
The registration of the maximum Contact Stress of Gear and maximum Dedenda's bending stress and the gear received is greater than 1.
10. a kind of tip relief device, which is characterized in that including tip relief component and processor, the processor and the tip relief component
Connection, the processor requires the described in any item polishing gear edge by use methods of 1-9 for perform claim, to control the tip relief component
Tip relief is carried out to gear.
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| DE3734828C1 (en) * | 1987-10-14 | 1989-01-12 | Hurth Masch Zahnrad Carl | Process for partially rolling gear wheels and a suitable machine for it |
| JP3358494B2 (en) * | 1997-05-20 | 2002-12-16 | トヨタ自動車株式会社 | Gears and gear tooth surface modification method |
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