CN104633049B - Stacked variable tooth thickness gear - Google Patents
Stacked variable tooth thickness gear Download PDFInfo
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- CN104633049B CN104633049B CN201510068251.8A CN201510068251A CN104633049B CN 104633049 B CN104633049 B CN 104633049B CN 201510068251 A CN201510068251 A CN 201510068251A CN 104633049 B CN104633049 B CN 104633049B
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- thickness
- gear
- vibration
- inner blade
- noise reducing
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/12—Toothed members; Worms with body or rim assembled out of detachable parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/14—Construction providing resilience or vibration-damping
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a kind of stacked variable tooth thickness gear, if the gear piece order overlapping that described gear is had thickening profile of tooth by dry tablet is constituted, described gear piece include the outer gear piece being located at the axial two ends of gear and outside two ends some inner blades between gear piece, the thickness of outer gear piece is more than the thickness of inner blade, vibration and noise reducing sheet all it is embedded with between gear piece, the tip diameter of described gear piece and root diameter all constitute change transverse tooth thickness radial shift external gear structure along the axial increasing or decreasing of gear, inside and outside gear piece and vibration and noise reducing sheet.The present invention uses lamination process to constitute variable tooth thickness gear, and Gearmaking Technology is good, is embedded vibration and noise reducing sheet between gear piece, suppresses the mesh vibration of gear from root, reduces rotational noise, extends the service life of gear pair.
Description
Technical field
The present invention relates to gear transmission technology field, particularly relate to a kind of stacked variable tooth thickness gear, this gear has
Complete change transverse tooth thickness radial shift external gear structure.
Background technology
Gear-box, as the important drive disk assembly of modern automobile industry, is the main vibration source in car running process and noise
One of source, its service behaviour has important impact to car load.Automobile vendor also pay much attention to reduce gear-box vibration and
Noise, and using it as the bright spot of new car.Gear engagement produces vibration, is delivered on gear housing by axle and bearing block, leads
Cause casing vibrates, radiated noise simultaneously.The vibration of gear engagement interface is the decisive excitation of construct noise, how to suppress engagement
The vibration produced, reduces noise from root, has important engineer applied and is worth.
Variable tooth thickness gear, its modification coefficient changes the most according to certain rules, and profile of tooth is formed necessarily at axis direction
Tapering.Just can regulate meshing backlass by adjusting its axial displacement, reach to adjust gap or the gap purpose that disappears, it is achieved precision drive, because of
This has broad application prospects in the transmissions such as precision machinery people and elaborate servo.But this Gear Processing is relatively difficult, and
The lathe not designed by its forming principle is available, and production cost is the highest, solves under the most existing level of processing
Its processing problems, significant for promoting the application of this kind of gear.On the other hand, the variable tooth thickness gear of prior art is equal
Use overall structure, gear engagement the vibration noise produced is relatively big, solves the noise problem of variable tooth thickness gear, for promoting this
The application planting gear is the most significant.
Summary of the invention
It is an object of the invention to the variable tooth thickness gear processing difficulties for solving prior art and the change transverse tooth thickness tooth of prior art
The problem that wheel gearing noise is big provides a kind of easy to process and that meshing noise is low stacked variable tooth thickness gear.
The present invention solves that above-mentioned technical problem employed technical scheme comprise that, a kind of stacked variable tooth thickness gear, described tooth
If wheel is had the identical number of teeth and has the gear piece order overlapping of thickening profile of tooth and constitute by dry tablet, described gear piece includes being located at gear shaft
To the outer gear piece at two ends and the some inner blades between two outer gear pieces, the thickness of outer gear piece is more than the thickness of inner blade,
All being embedded with vibration and noise reducing sheet between adjacent gear piece, the center of gear piece is provided with axis hole, and axis hole is provided around some for fixing
The fixing hole of gear piece, the tip diameter of described gear piece and root diameter are all along the same axial increasing or decreasing of gear, interior
Outer gear piece and vibration and noise reducing sheet constitute a complete change transverse tooth thickness radial shift external gear structure.The variable tooth thickness gear of the present invention by
If the gear piece that dry tablet has thickening profile of tooth is formed by stacking, gear piece includes outer gear piece and inner blade, wherein at the two ends that gear is axial
One piece of outer gear piece is respectively set on face, some inner blades is set between outer gear piece, is embedded vibration and noise reducing sheet between adjacent gear piece, subtracts
The basic structure of noise reduction piece of shaking is suitable with gear piece, and inside and outside gear piece and vibration and noise reducing sheet are by the screw in fixing hole or rivet
It is connected and fixed, thus constitutes a complete stacked radial shift variable tooth thickness gear.Use lamination process to constitute and become transverse tooth thickness tooth
Wheel, owing to single gear piece thickness is less, the most easily reaches processing request, and Gearmaking Technology is good, applies simple technique
Just can complete Hardened gear face and the processing of high-precision variable tooth thickness gear, solve the asking of variable tooth thickness gear processing difficulties of prior art
Topic, can improve bearing capacity and the running precision of actuating device.Here thickening profile of tooth refers to its tooth of the gear teeth on gear piece
Thickness is incrementally increased towards another side by the one of gear piece in the axial direction of gear.It addition, be all embedded between the adjacent gear piece of the present invention
There are vibration and noise reducing sheet, vibration and noise reducing sheet to have high damping characteristic, are embedded between gear piece, can effectively suppress gear to engage
The vibration caused, i.e. reduces the mesh vibration of gear from root, reduces rotational noise, thus reduces noise.Therefore the present invention
Structure can solve the problem that the variable tooth thickness gear gearing noise of prior art is big, the use of gear pair can also be extended simultaneously
In the life-span, it is particularly well-suited to high-precision actuating device.
As preferably, the gear teeth of described gear are straight-tooth or helical teeth, the modification coefficient of described gear along gear axially in line
Property change.
As preferably, the thickness of all inner blades is equal, the thickness of all vibration and noise reducing sheets equal and with adjacent gear piece
Glueing joint, thickness is inner blade thickness the 15% to 30% of described vibration and noise reducing sheet, the thickness of outer gear piece is equal and its thickness is interior
3 to 5 times of gear piece thickness.The gear piece of the present invention is on the basis of screw or rivet are fixing, also with adjacent vibration and noise reducing sheet glue
Connect, so can improve the bulk strength of gear.For the vibration and noise reducing sheet of identical material, use can improving of larger thickness
Effect of vibration and noise reduction, but the bulk strength of gear can be affected；And the thickness of vibration and noise reducing sheet is too small, then effect of vibration and noise reduction is relatively
Thickness is inner blade thickness the 15% to 30% of difference, generally selection vibration and noise reducing sheet is proper, and this numerical value can also be according to not
With operating mode gear be actually needed and the noise reduction performance of unlike material vibration and noise reducing sheet considers and chooses.The outer gear piece of the present invention
In addition to the function undertaking gear, also undertake compression inner blade and the function of vibration and noise reducing sheet, the thickness of outer gear piece generally than
The thickness of inner blade is bigger, so it may also be ensured that the edge strength of gear, it is to avoid be positioned at outermost gear piece cracking or crimp.
The gear piece of the present invention and vibration and noise reducing sheet can also use following several further improved structure form:
1, the thickness of all inner blades is equal, and all vibration and noise reducing sheets glued joint with adjacent gear piece, are positioned at transverse tooth thickness bigger
The thickness of the vibration and noise reducing sheet of inner blade side, more than the thickness of the vibration and noise reducing sheet being positioned at the less inner blade side of transverse tooth thickness, subtracts
The thickness of noise reduction piece of shaking the most linearly changes along gear, the minimum thickness of vibration and noise reducing sheet be inner blade thickness 15% to
20%, the maximum gauge of vibration and noise reducing sheet is the 25% to 30% of inner blade thickness, and the thickness of outer gear piece is equal and its thickness is internal tooth
3 to 5 times of sheet thickness.In the technical program, in gear, the thickness of each inner blade is the most equal, and the thickness of vibration and noise reducing sheet is not
With, the thickness of the vibration and noise reducing sheet of the inner blade side that close transverse tooth thickness is bigger is relatively big, the inner blade side that close transverse tooth thickness is less
The thickness of vibration and noise reducing sheet is less, and the thickness of vibration and noise reducing sheet the most linearly changes along gear.This allows for transverse tooth thickness relatively
Its overall dimensions of big inner blade is relatively large, and under same thickness, its resonant frequency is relatively low, and the vibration damping fall that thickness is bigger
Sheet of making an uproar has more preferable damping capacity for the vibration that frequency is relatively low, so can not increase vibration and noise reducing sheet integral thickness
The vibration suppression frequency band of broadening gear under premise, reduces the rotational noise of gear, thus reduces noise.
2, the thickness of the inner blade that the thickness of the inner blade that transverse tooth thickness is less is bigger more than transverse tooth thickness, the thickness of maximum gauge inner blade
Degree is 1.5 to 2 times of the thickness of minimum thickness inner blade, and the thickness of inner blade the most linearly changes along gear, all vibration dampings
The thickness of noise reduction piece is equal and glueds joint with adjacent gear piece, the thickness of vibration and noise reducing sheet be maximum inner blade thickness 10% to
20%, the thickness of outer gear piece is equal and its thickness is 2 to 3 times of thickness of maximum inner blade.In the technical program, in gear
The thickness of each vibration and noise reducing sheet is the most equal, and the thickness of inner blade is different, and the thickness of the inner blade that transverse tooth thickness is less is relatively big, transverse tooth thickness
The thickness of bigger inner blade is less, and it is relatively small, same that this allows for transverse tooth thickness its overall dimensions of less inner blade
Under thickness, its resonant frequency is higher, suitably increases thickness and its resonant frequency can be made to decline, it is to avoid the noise band of gear is wide,
The vibration and noise reducing sheet facilitating views with single damping characteristic eliminates the rotational noise of gear, thus reduces noise.
3, the thickness of the inner blade that the thickness of the inner blade that transverse tooth thickness is less is bigger more than transverse tooth thickness, the thickness of maximum gauge inner blade
Degree is 1.5 to 2 times of the thickness of minimum thickness inner blade, and the thickness of inner blade the most linearly changes along gear；All vibration dampings
Noise reduction piece glueds joint with adjacent gear piece, is positioned at the thickness of vibration and noise reducing sheet of the bigger inner blade side of transverse tooth thickness more than being positioned at transverse tooth thickness
The thickness of the vibration and noise reducing sheet of less inner blade side, the thickness of maximum gauge vibration and noise reducing sheet is minimum thickness vibration and noise reducing
1.5 to 2 times of the thickness of sheet, the thickness of vibration and noise reducing sheet the most linearly changes along gear, the maximum gauge of vibration and noise reducing sheet
For the 15% to 30% of maximum inner blade thickness, the thickness of outer gear piece is equal and its thickness be maximum inner blade thickness 2 to 3
Times.Being the integration scenario of aforementioned 1,2 two schemes in the technical program, its operation principle is basically identical, and structure is relative complex, but
There is more preferable effect of vibration and noise reduction.
As preferably, inner blade includes the inner blade structure of two kinds of different hardness, and it is hard for the inner blade of two kinds of different hardness
The difference of angle value is the 10% to 15% of high rigidity inner blade hardness number, and the inner blade of two kinds of different hardness is alternately arranged, described internal tooth
The total quantity of sheet is odd number, and its hardness of the inner blade adjacent with outer gear piece is higher than the inner blade being adjacent, and described outer gear piece is adopted
Use composite damping steel plate structure.The inner blade using two kinds of different hardness is conducive to the dispersion of the noise frequency point of inner blade, from
And reducing the noise peak of same Frequency point, it is to avoid noise frequency concentrates on a frequency, advantageously reduces gear noise
Maximum.The difference of hardness number here is the 10% to 15% of high rigidity inner blade hardness number, is the inner blade hardness with high rigidity
On the basis of value, the hardness number of the inner blade of soft is hard relative to the inner blade of high rigidity with the difference of high rigidity inner blade hardness number
The percentage ratio of angle value, for example, when the inner blade hardness number of high rigidity is HRC50, then the hardness of the inner blade of soft
Value is HRC42.5-HRC45；The inner blade of two kinds of different hardness can be the material that two kinds of hardness is different, it is also possible to be same
Plant material and obtain two kinds of different hardness by different heat treatment modes；And outer gear piece uses composite damping steel plate structure also may be used
With the propagation of effective suppression vibration, thus reduce noise.
As preferably, every vibration and noise reducing sheet is made up of single damping material, and gear is provided with two kinds by different damping characteristic
The vibration and noise reducing sheet that constitutes of damping material, the corresponding two kinds of frequencies of the fissipation factor peak value of two kinds of vibration and noise reducing sheets, two kinds of vibration dampings
Noise reduction piece is alternately arranged between the gear piece of gear.For the gear of above-mentioned two kinds of different hardness inner blades of employing, this skill
The structure of art scheme can be adaptive with it, uses two kinds of vibration and noise reducing sheets with corresponding damping characteristic to suppress to make an uproar accordingly
Sound, can reach good noise reduction.
Vibration and noise reducing sheet can be to use structures below form:
1, every vibration and noise reducing sheet is made up of single damping material, and gear is provided with the two or more resistance by different damping characteristic
The vibration and noise reducing sheet that damping material is constituted, the corresponding different frequency of the fissipation factor peak value of every kind of vibration and noise reducing sheet, different damping is special
Property vibration and noise reducing sheet between the gear piece of gear alternate cycles arrange.The technical program be for three kinds and more than three kinds but total
Number is less than the vibration and noise reducing sheet situation of gear piece gap number, and such as vibration and noise reducing sheet is three kinds, but the gear piece gap number of gear is six
Individual, now three kinds of vibration and noise reducing sheets use the arrangement mode of 1+2+3+1+2+3 in the axial direction of gear, this vibration and noise reducing sheet
The plan of establishment is mainly used in broadening vibration and noise reducing sheet frequency suppression scope, can pass at the gear that some frequency noise scope is bigger
Dynamic system uses.
2, every vibration and noise reducing sheet is made up of single damping material, and on gear, the vibration and noise reducing sheet of diverse location is hindered by difference
The damping material of damping characteristics is constituted, the corresponding different frequency of the fissipation factor peak value of every vibration and noise reducing sheet, different damping characteristic
Vibration and noise reducing sheet frequency size as corresponding to fissipation factor peak value in the axial direction of gear be arranged in order, less with transverse tooth thickness
Its frequency corresponding to fissipation factor peak value of the vibration and noise reducing sheet that outer gear piece is close to is close to higher than the outer gear piece bigger with transverse tooth thickness
Its frequency corresponding to fissipation factor peak value of vibration and noise reducing sheet.The technical program be use with gear piece gap number equal number of,
There is different damping characteristic vibration and noise reducing sheet to suppress gear noise, the plan of establishment of this vibration and noise reducing sheet be the most also for
Broadening vibration and noise reducing sheet frequency suppression scope, can use in the gear train assembly that some frequency noise scope is bigger.
The vibration and noise reducing sheet of the present invention can use polymer damping material, it would however also be possible to employ alloy damping material, different
The corresponding different frequency of its fissipation factor peak value of the damping material of damping characteristic, can have a lot of selections.Such as macromolecule material
The frequency that ethylene propylene diene rubber in material is corresponding is about 750Hz, and butyl rubber is about 450 Hz, and natural rubber is 580 Hz
Left and right, 2 chlorobutadiene-acrylonitrile copolymer is about 250 Hz；Polyacrylate, polyurethane, epoxy resin can also be selected
And nitrile rubber etc..Damping alloy also has a large amount in variety, such as Al-Zn alloy, Mn-Cu alloy, Mg-Zi alloy and Ni-Ti alloy
Deng, iron-based damping alloy just has the multiple high-damping such as Fe-Cr-Al, Fe-Al, Fe-Mo, Fe-W, Fe-Cr-Mo, Fe-Cr-Co to close
Gold copper-base alloy, the description of vibration and noise reducing material and characteristic thereof belong to known technology, can be public according to the present invention time actually used
The system of selection opened also is chosen suitable material according to the actual condition of gear or gear train and is made vibration and noise reducing sheet.
As preferably, vibration and noise reducing sheet is provided with frequency fine tuning hole, and described frequency fine tuning hole is 3 to 6, along inner blade
Circumference be evenly arranged, the frequency fine tuning hole on adjacent two panels vibration and noise reducing sheet shifts to install.Vibration and noise reducing sheet arranges frequency
The damped frequency peak point position corresponding to vibration and noise reducing sheet can be finely tuned in rate fine setting hole, so that vibration and noise reducing sheet meets difference
Frequency suppression requirement, frequency fine tuning hole can be arranged on part vibration and noise reducing sheet, it is also possible to be arranged on all of vibration damping fall
Make an uproar on sheet, when being respectively provided with frequency fine tuning hole on adjacent two panels vibration and noise reducing sheet, it should avoid frequency fine tuning hole to occur in gear
Same axially on, i.e. avoid part gear piece both sides that the situation of cavity occurs simultaneously, prevent from causing new vibration.
The processing method of the stacked variable tooth thickness gear of the present invention is: added by profile of tooth and the size of regulation by some foils
Work becomes thickening gear piece, by each gear piece by regulation order alignment overlap, and between gear piece glued joint vibration and noise reducing sheet, by
Arrange screw or rivet in fixing hole to be fixed by all gear pieces, be finally constituted a complete change transverse tooth thickness radial shift external tooth
Wheel construction.
The invention has the beneficial effects as follows: it efficiently solves the variable tooth thickness gear processing difficulties of prior art and existing skill
The problem that the variable tooth thickness gear gearing noise of art is big, the stacked variable tooth thickness gear of the present invention, constituted gear with lamination process, can
To use unlike material, different-thickness, and the foil polish of different heat treatment state forms gear piece, Gear Processing work
Skill is good, applies simple technique just can complete Hardened gear face and the processing of high-precision variable tooth thickness gear, thus improves actuating device
Bearing capacity and running precision；And it is embedded vibration and noise reducing sheet between gear piece, from root, suppress the mesh vibration of gear, subtract
Lack rotational noise, extended the service life of gear pair, be particularly well-suited to high-precision actuating device.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the stacked variable tooth thickness gear of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the partial enlarged drawing of Fig. 2；
A kind of structural representation of Fig. 4 vibration and noise reducing of the present invention sheet.
In figure: outer gear piece, 2. inner blade, 3. vibration and noise reducing sheet, 4. axis hole, 5. fixing hole, 6. frequency fine tuning hole, 7. riveting
Nail.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
In the embodiment 1 shown in Fig. 1 Fig. 2, a kind of stacked variable tooth thickness gear, described gear is had identical tooth by 11
Counting and have the gear piece order overlapping composition of thickening profile of tooth, described gear piece includes outer gear piece 1 and the position being located at the axial two ends of gear
9 inner blade 2(between two outer gear pieces are shown in Fig. 3), the thickness of all inner blades is equal, and the thickness of outer gear piece is inner blade
4 times of thickness, are all embedded with vibration and noise reducing sheet 3 between adjacent gear piece, the basic structure of vibration and noise reducing sheet is suitable with gear piece,
The thickness of all vibration and noise reducing sheets is equal and glueds joint with adjacent gear piece, and the thickness of described vibration and noise reducing sheet is inner blade thickness
30%, the center of gear piece is provided with axis hole 4, and axis hole is provided around some fixing holes 5 for fixing gear piece, the tooth top of described gear piece
Circular diameter and root diameter are all axially incremented by along the same of gear, and the modification coefficient of gear the most linearly changes along gear,
Inside and outside gear piece and vibration and noise reducing sheet are connected and fixed by the rivet 7 being arranged in fixing hole, inside and outside gear piece and vibration and noise reducing sheet structure
Become a complete change transverse tooth thickness radial shift straight-tooth external gear structure.
Embodiment 2
The gear of embodiment 2 is helical gear, and the thickness of 7 inner blades in gear is equal, and 8 vibration and noise reducing sheets are with adjacent
Gear piece glued joint, be positioned at the thickness of vibration and noise reducing sheet of the bigger inner blade side of transverse tooth thickness more than being positioned at the inner blade that transverse tooth thickness is less
The thickness of the vibration and noise reducing sheet of side, the thickness of vibration and noise reducing sheet the most linearly changes along gear, the minimum of vibration and noise reducing sheet
Thickness is the 15% of inner blade thickness, and the maximum gauge of vibration and noise reducing sheet is the 30% of inner blade thickness, and the thickness of outer gear piece is equal
And its thickness is 3 times of inner blade thickness, remaining is identical with embodiment 1.
Embodiment 3
In embodiment 3, gear includes 8 inner blades and 9 vibration and noise reducing sheets, and inner blade has different thickness, tooth
The thickness of thick less inner blade is more than the thickness of the bigger inner blade of transverse tooth thickness, and the thickness of maximum gauge inner blade is minimum thickness
1.8 times of the thickness of inner blade, the thickness of inner blade the most linearly changes along gear, and the thickness of all vibration and noise reducing sheets is equal
And glued joint with adjacent gear piece, the thickness of vibration and noise reducing sheet is the 18% of maximum inner blade thickness, the thickness of outer gear piece equal and its
Thickness is 2.5 times of the thickness of maximum inner blade, and remaining is identical with embodiment 1 or embodiment 2.
Embodiment 4
In example 4, gear includes 10 inner blades and 11 vibration and noise reducing sheets, and inner blade has different thickness,
The thickness of the inner blade that the thickness of the inner blade that transverse tooth thickness is less is bigger more than transverse tooth thickness, the thickness of maximum gauge inner blade is minimum thick
1.6 times of the thickness of degree inner blade, the thickness of inner blade the most linearly changes along gear；Vibration and noise reducing sheet has different thickness
Spend and glued joint with adjacent gear piece, being positioned at the thickness of vibration and noise reducing sheet of the bigger inner blade side of transverse tooth thickness more than being positioned at transverse tooth thickness relatively
The thickness of the vibration and noise reducing sheet of little inner blade side, the thickness of maximum gauge vibration and noise reducing sheet is minimum thickness vibration and noise reducing sheet
1.7 times of thickness, the thickness of vibration and noise reducing sheet the most linearly changes along gear, and the maximum gauge of vibration and noise reducing sheet is maximum
The 20% of inner blade thickness, the thickness of outer gear piece is equal and its thickness is 2 times of thickness of maximum inner blade, remaining and embodiment 1
Or embodiment 2 is identical.
Embodiment 5
In embodiment 5, the total quantity of gear inner blade is odd number, including 11 inner blades and 12 vibration and noise reducing sheets,
Inner blade includes the inner blade structure of two kinds of different hardness, in the difference of its hardness number of the inner blade of two kinds of different hardness is high rigidity
The 10% of gear piece hardness number, the inner blade of two kinds of different hardness is alternately arranged, its hardness of the inner blade adjacent with outer gear piece higher than with
Its adjacent inner blade, described outer gear piece uses composite damping steel plate structure.The inner blade of two kinds of different hardness of the present embodiment
It is that commaterial is obtained by different heat treatment modes, it is also possible to select the material that two kinds of hardness is different.Embodiment 5 every
Sheet vibration and noise reducing sheet is made up of single damping material, and gear is provided with two kinds of vibration dampings being made up of the damping material of different damping characteristic
Noise reduction piece, the corresponding two kinds of frequencies of the fissipation factor peak value of two kinds of vibration and noise reducing sheets, two kinds of vibration and noise reducing sheets gear gear piece it
Between be alternately arranged, remaining with embodiment 1 embodiment 2 or embodiment 3 or embodiment 4 identical.
Embodiment 6
In embodiment 6, gear includes 5 inner blades and 6 vibration and noise reducing sheets, and every vibration and noise reducing sheet is by single damping
Material is constituted, and gear is provided with three kinds of vibration and noise reducing sheets being made up of the damping material of different damping characteristic, every kind of vibration and noise reducing sheet
Fissipation factor peak value correspondence not frequency, vibration and noise reducing sheet alternate cycles cloth between the gear piece of gear of different damping characteristic
Put.The vibration and noise reducing sheet of the present embodiment is three kinds, and the gear piece gap number of gear is six, and three kinds of vibration and noise reducing sheets are at the axle of gear
Upwards use the arrangement mode of 1+2+3+1+2+3, remaining with embodiment 1 embodiment 2 or embodiment 3 or embodiment 4 identical.
Embodiment 7
In embodiment 7, gear includes 6 inner blades and 7 vibration and noise reducing sheets, and every vibration and noise reducing sheet is by single damping
Material is constituted, and on gear, the vibration and noise reducing sheet of diverse location is made up of the damping material of different damping characteristic, every vibration and noise reducing
The corresponding different frequency of the fissipation factor peak value of sheet, the vibration and noise reducing sheet of different damping characteristic in the axial direction of gear by loss because of
Frequency size corresponding to sub-peak value is arranged in order, its fissipation factor peak of vibration and noise reducing sheet that the outer gear piece less with transverse tooth thickness is close to
Its frequency corresponding to fissipation factor peak value of vibration and noise reducing sheet that frequency corresponding to value is close to higher than the outer gear piece bigger with transverse tooth thickness
Rate, remaining with embodiment 1 embodiment 2 or embodiment 3 or embodiment 4 identical.
Embodiment 8
In embodiment 8, vibration and noise reducing sheet is provided with frequency fine tuning hole 6(and sees Fig. 4), described frequency fine tuning hole is 3,
Circumference along inner blade is evenly arranged, and the frequency fine tuning hole on adjacent two panels vibration and noise reducing sheet shifts to install, and the present embodiment is subtracting
Shake and the version in frequency fine tuning hole is set on noise reduction piece can use on the vibration and noise reducing sheet of an any of the above described embodiment,
The i.e. middle employing at above-described embodiment 1-7 just constitutes the embodiment that the present invention is new, frequently with the vibration and noise reducing sheet in frequency fine tuning hole
Rate fine setting hole can be arranged on part vibration and noise reducing sheet, it is also possible to is arranged on all of vibration and noise reducing sheet.
The vibration and noise reducing sheet of the present invention can use polymer damping material, it would however also be possible to employ alloy damping material, different
The corresponding different frequency of its fissipation factor peak value of the damping material of damping characteristic, can have a lot of selections.Such as macromolecule material
The frequency that ethylene propylene diene rubber in material is corresponding is about 750Hz, and butyl rubber is about 450 Hz, and natural rubber is 580 Hz
Left and right, 2 chlorobutadiene-acrylonitrile copolymer is about 250 Hz；Polyacrylate, polyurethane, epoxy resin can also be selected
And nitrile rubber etc..Damping alloy also has a large amount in variety, such as Al-Zn alloy, Mn-Cu alloy, Mg-Zi alloy and Ni-Ti alloy
Deng, iron-based damping alloy just has the multiple high-damping such as Fe-Cr-Al, Fe-Al, Fe-Mo, Fe-W, Fe-Cr-Mo, Fe-Cr-Co to close
Gold copper-base alloy, the description of vibration and noise reducing material and characteristic thereof belong to known technology, can be public according to the present invention time actually used
The system of selection opened also is chosen suitable material according to the actual condition of gear or gear train and is made vibration and noise reducing sheet.
The processing method of the stacked variable tooth thickness gear of the present invention is: added by profile of tooth and the size of regulation by some foils
Work becomes thickening gear piece, by each gear piece by regulation order alignment overlap, and between gear piece glued joint vibration and noise reducing sheet, by
Arrange screw or rivet in fixing hole to be fixed by all gear pieces, be finally constituted a complete change transverse tooth thickness radial shift external tooth
Wheel construction.
If the gear piece that the variable tooth thickness gear of the present invention is had thickening profile of tooth by dry tablet is formed by stacking, gear piece includes being arranged on tooth
Wheel shaft to both ends of the surface on some inner blades between outer gear piece and outer gear piece, be embedded vibration and noise reducing sheet between adjacent gear piece,
Inside and outside gear piece and vibration and noise reducing sheet are fixed by the screw in fixing hole or rivet joint, thus constitute an entirety and become transverse tooth thickness
Gear.Use lamination process to constitute variable tooth thickness gear, owing to single gear piece thickness is less, the most easily reach processing request, tooth
Wheel processing technology is good, applies simple technique just can complete Hardened gear face and the processing of high-precision variable tooth thickness gear, solves existing
The problem having the variable tooth thickness gear processing difficulties of technology.It addition, be all embedded with vibration and noise reducing sheet between the adjacent gear piece of the present invention,
Vibration and noise reducing sheet has high damping characteristic, is embedded between gear piece, can effectively suppress gear to engage the vibration caused, i.e.
From root, reduce the mesh vibration of gear, reduce rotational noise, thus reduce noise.Therefore the structure of the present invention can solve
The problem that the variable tooth thickness gear gearing noise of prior art is big, can also extend the service life of gear pair simultaneously, particularly suitable
In high-precision actuating device.
In addition to the implementation, in the scope disclosed in claims of the present invention and description, the skill of the present invention
Art feature or technical data can reselect and combine, thus constitute new embodiment, and these present invention are the most in detail
The thin embodiment described is that those skilled in the art just can realize easily without creative work, and therefore these are the most detailed
The embodiment described also should be regarded as the specific embodiment of the present invention and within protection scope of the present invention.
Claims (7)
1. a stacked variable tooth thickness gear, it is characterised in that: if described gear is had the identical number of teeth by dry tablet and has thickening
The gear piece order overlapping of profile of tooth is constituted, and described gear piece includes the outer gear piece (1) being located at the axial two ends of gear and is positioned at two external tooths
Some inner blades (2) between sheet, the thickness of outer gear piece, more than the thickness of inner blade, is all embedded with vibration damping between adjacent gear piece
Noise reduction piece (3), the center of gear piece is provided with axis hole (4), and axis hole is provided around some fixing holes (5) for fixing gear piece, described
The tip diameter of gear piece and root diameter are all along the same axial increasing or decreasing of gear, inside and outside gear piece and vibration and noise reducing sheet
Constitute a complete change transverse tooth thickness radial shift external gear structure；Inner blade includes the inner blade structure of two kinds of different hardness, two
Difference is high rigidity inner blade hardness number the 10% to 15% of its hardness number of inner blade of kind of different hardness, two kinds of different hardness interior
Gear piece is alternately arranged, and the total quantity of described inner blade is odd number, and its hardness of the inner blade adjacent with outer gear piece is higher than being adjacent
Inner blade, described outer gear piece use composite damping steel plate structure；Every vibration and noise reducing sheet is made up of single damping material, gear
It is provided with two kinds of vibration and noise reducing sheets being made up of the damping material of different damping characteristic, the fissipation factor peak value of two kinds of vibration and noise reducing sheets
Corresponding two kinds of frequencies, two kinds of vibration and noise reducing sheets are alternately arranged between the gear piece of gear.
Stacked variable tooth thickness gear the most according to claim 1, it is characterised in that: the gear teeth of described gear are straight-tooth or oblique
Tooth, the modification coefficient of described gear the most linearly changes along gear.
Stacked variable tooth thickness gear the most according to claim 1, it is characterised in that: the thickness of all inner blades is equal, institute
Having the thickness of vibration and noise reducing sheet equal and glued joint with adjacent gear piece, the thickness of described vibration and noise reducing sheet is inner blade thickness
15% to 30%, the thickness of outer gear piece is equal and its thickness is 3 to 5 times of inner blade thickness.
Stacked variable tooth thickness gear the most according to claim 1, it is characterised in that: the thickness of all inner blades is equal, institute
There is vibration and noise reducing sheet to glued joint with adjacent gear piece, be positioned at the thickness of vibration and noise reducing sheet of the bigger inner blade side of transverse tooth thickness more than position
In the thickness of the vibration and noise reducing sheet of the less inner blade side of transverse tooth thickness, the thickness of vibration and noise reducing sheet the most linearly becomes along gear
Changing, the minimum thickness of vibration and noise reducing sheet is the 15% to 20% of inner blade thickness, and the maximum gauge of vibration and noise reducing sheet is that inner blade is thick
The 25% to 30% of degree, the thickness of outer gear piece is equal and its thickness is 3 to 5 times of inner blade thickness.
Stacked variable tooth thickness gear the most according to claim 1, it is characterised in that: transverse tooth thickness is big compared with the thickness of little inner blade
In the thickness of the bigger inner blade of transverse tooth thickness, the thickness of maximum gauge inner blade is the 1.5 to 2 of the thickness of minimum thickness inner blade
Times, the thickness of inner blade the most linearly changes along gear, the thickness of all vibration and noise reducing sheets equal and with adjacent gear piece glue
Connecing, the thickness of vibration and noise reducing sheet is the 10% to 20% of maximum inner blade thickness, and the thickness of outer gear piece is equal and its thickness is maximum
2 to 3 times of the thickness of inner blade.
Stacked variable tooth thickness gear the most according to claim 1, it is characterised in that: transverse tooth thickness is big compared with the thickness of little inner blade
In the thickness of the bigger inner blade of transverse tooth thickness, the thickness of maximum gauge inner blade is the 1.5 to 2 of the thickness of minimum thickness inner blade
Times, the thickness of inner blade the most linearly changes along gear；All vibration and noise reducing sheets glued joint with adjacent gear piece, are positioned at transverse tooth thickness relatively
The thickness of the vibration and noise reducing sheet of big inner blade side is more than the thickness of the vibration and noise reducing sheet being positioned at the less inner blade side of transverse tooth thickness
Degree, the thickness of maximum gauge vibration and noise reducing sheet is 1.5 to 2 times of the thickness of minimum thickness vibration and noise reducing sheet, vibration and noise reducing sheet
Thickness the most linearly changes along gear, and the maximum gauge of vibration and noise reducing sheet is the 15% to 30% of maximum inner blade thickness, external tooth
The thickness of sheet is equal and its thickness is 2 to 3 times of thickness of maximum inner blade.
7. according to the stacked variable tooth thickness gear described in any one of claim 1-6, it is characterised in that: vibration and noise reducing sheet is provided with
Frequency fine tuning hole (6), described frequency fine tuning hole is 3 to 6, and the circumference along inner blade is evenly arranged, and adjacent two panels vibration damping drops
The frequency fine tuning hole made an uproar on sheet shifts to install.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710040038.5A CN106763647A (en) | 2015-02-09 | 2015-02-09 | A kind of gear and its processing method that can suppress mesh vibration |
| CN201510068251.8A CN104633049B (en) | 2015-02-09 | 2015-02-09 | Stacked variable tooth thickness gear |
| CN201710039920.8A CN106641182A (en) | 2015-02-09 | 2015-02-09 | Gear and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510068251.8A CN104633049B (en) | 2015-02-09 | 2015-02-09 | Stacked variable tooth thickness gear |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710039920.8A Division CN106641182A (en) | 2015-02-09 | 2015-02-09 | Gear and processing method thereof |
| CN201710040038.5A Division CN106763647A (en) | 2015-02-09 | 2015-02-09 | A kind of gear and its processing method that can suppress mesh vibration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104633049A CN104633049A (en) | 2015-05-20 |
| CN104633049B true CN104633049B (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710039920.8A Withdrawn CN106641182A (en) | 2015-02-09 | 2015-02-09 | Gear and processing method thereof |
| CN201510068251.8A Expired - Fee Related CN104633049B (en) | 2015-02-09 | 2015-02-09 | Stacked variable tooth thickness gear |
| CN201710040038.5A Withdrawn CN106763647A (en) | 2015-02-09 | 2015-02-09 | A kind of gear and its processing method that can suppress mesh vibration |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710039920.8A Withdrawn CN106641182A (en) | 2015-02-09 | 2015-02-09 | Gear and processing method thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710040038.5A Withdrawn CN106763647A (en) | 2015-02-09 | 2015-02-09 | A kind of gear and its processing method that can suppress mesh vibration |
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| CN (3) | CN106641182A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105065627A (en) * | 2015-08-02 | 2015-11-18 | 衢州市优德工业设计有限公司 | Machining method of lamination glue dipping gear |
| CN109058499B (en) * | 2018-10-25 | 2019-12-13 | 山西平阳重工机械有限责任公司 | Special-shaped helical gear worm composite speed-reducing flow valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412456A (en) * | 2002-11-20 | 2003-04-23 | 赵永彬 | Gear and its production method |
| EP1422134A2 (en) * | 1996-12-20 | 2004-05-26 | Shimano Inc. | Multiple sprocket assemby for a bicycle |
| CN201502683U (en) * | 2009-08-21 | 2010-06-09 | 陈翊柜 | Combined gear |
| CN201934622U (en) * | 2011-01-26 | 2011-08-17 | 海洋王照明科技股份有限公司 | Gear, winch mechanism and illumination device comprising gear |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000234242A (en) * | 1998-12-10 | 2000-08-29 | Toyota Autom Loom Works Ltd | Wheel for rapier loom |
-
2015
- 2015-02-09 CN CN201710039920.8A patent/CN106641182A/en not_active Withdrawn
- 2015-02-09 CN CN201510068251.8A patent/CN104633049B/en not_active Expired - Fee Related
- 2015-02-09 CN CN201710040038.5A patent/CN106763647A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1422134A2 (en) * | 1996-12-20 | 2004-05-26 | Shimano Inc. | Multiple sprocket assemby for a bicycle |
| CN1412456A (en) * | 2002-11-20 | 2003-04-23 | 赵永彬 | Gear and its production method |
| CN201502683U (en) * | 2009-08-21 | 2010-06-09 | 陈翊柜 | Combined gear |
| CN201934622U (en) * | 2011-01-26 | 2011-08-17 | 海洋王照明科技股份有限公司 | Gear, winch mechanism and illumination device comprising gear |
Non-Patent Citations (1)
| Title |
|---|
| 变齿厚渐开线齿轮副啮合效率研究;蒋汉军等;《机械传动》;20110630;第35卷(第06期);第10-14页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104633049A (en) | 2015-05-20 |
| CN106641182A (en) | 2017-05-10 |
| CN106763647A (en) | 2017-05-31 |
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