CN106763647A - A kind of gear and its processing method that can suppress mesh vibration - Google Patents
A kind of gear and its processing method that can suppress mesh vibration Download PDFInfo
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- CN106763647A CN106763647A CN201710040038.5A CN201710040038A CN106763647A CN 106763647 A CN106763647 A CN 106763647A CN 201710040038 A CN201710040038 A CN 201710040038A CN 106763647 A CN106763647 A CN 106763647A
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- noise reducing
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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
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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
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
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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
- F16H55/12—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 gear and its processing method that can suppress mesh vibration, if the gear piece order overlapping that the gear is had thickening tooth form by dry plate is constituted, the gear piece includes the outer gear piece and some inner blades between gear piece outside two ends located at gear axial direction two ends, thickness of the thickness of outer gear piece more than inner blade, vibration and noise reducing piece is embedded between gear piece, the tip diameter and root diameter of the gear piece are constituted and become transverse tooth thickness radial shift external tooth wheel construction along gear axial direction increasing or decreasing, inside and outside gear piece and vibration and noise reducing piece.The present invention constitutes variable tooth thickness gear using lamination process, and Gearmaking Technology is good, is embedded vibration and noise reducing piece between gear piece, and the mesh vibration of gear is suppressed from root, reduces rotational noise, extends the service life of gear pair.
Description
Technical field
The present invention relates to gear transmission technology field, more particularly to a kind of stacked variable tooth thickness gear, the gear has
Complete change transverse tooth thickness radial shift external tooth wheel construction.
Background technology
Gear-box as modern automobile industry important drive disk assembly, be the main vibration source and noise in car running process
One of source, its service behaviour has important influence to vehicle.Automobile vendor also pay much attention to reduce gear-box vibration and
Noise, and using it as new car bright spot.Gear engagement produces vibration, is delivered on gear housing by axle and bearing block, leads
Casing vibration is caused, while radiated noise.The vibration of gear engagement interface is the decisive excitation of construct noise, how to suppress engagement
The vibration of generation, reduces noise from root, with important engineering application value.
Variable tooth thickness gear, its modification coefficient changes according to certain rules in the axial direction, and tooth form is formed necessarily in axis direction
Taper.Meshing backlass can be just adjusted by adjusting its axial displacement, tune gap or the gap purpose that disappears is reached, precision drive is realized, because
This has broad application prospects in precision machinery people and elaborate servo etc. are driven.But this Gear Processing is relatively difficult, and
Available without the lathe by the design of its forming principle, production cost is very high, therefore solution under existing level of processing at home
Its processing problems, the application for promoting this kind of gear is significant.On the other hand, the variable tooth thickness gear of prior art is equal
Using overall structure, the vibration noise produced by gear engagement is larger, the noise problem of variable tooth thickness gear is solved, for promoting this
The application for planting gear is also significant.
The content of the invention
The purpose of the present invention is to solve the variable tooth thickness gear processing difficulties of prior art and the change transverse tooth thickness tooth of prior art
The big problem of wheel gearing noise provides a kind of easy to process and meshing noise low stacked variable tooth thickness gear.
The present invention is that the technical scheme for solving above-mentioned technical problem use is, a kind of stacked variable tooth thickness gear, the tooth
If wheel has the identical number of teeth by dry plate and the order overlapping of the gear piece with thickening tooth form is constituted, the gear piece includes being located at gear shaft
Some inner blades to the outer gear piece at two ends and between two outer gear pieces, the thickness of the thickness more than inner blade of outer gear piece,
Vibration and noise reducing piece is embedded between adjacent gear piece, the center of gear piece is provided with axis hole, is provided with some for fixing around axis hole
The fixing hole of gear piece, the tip diameter and root diameter of the gear piece are interior along the same axial increasing or decreasing of gear
Outer gear piece and vibration and noise reducing piece constitute a complete change transverse tooth thickness radial shift external tooth wheel construction.Variable tooth thickness gear of the invention by
If the gear piece that dry plate has thickening tooth form is formed by stacking, gear piece includes outer gear piece and inner blade, wherein at the two ends of gear axial direction
One piece of outer gear piece is respectively set on face, some inner blades are set between outer gear piece, vibration and noise reducing piece is embedded between adjacent gear piece, subtract
The basic structure of noise reduction piece of shaking is adapted with gear piece, and inside and outside gear piece and vibration and noise reducing piece are by the screw or rivet in fixing hole
It is connected and fixed, so as to constitute a complete stacked radial shift variable tooth thickness gear.Constituted using lamination process and become transverse tooth thickness tooth
Wheel, because single gear piece thickness is smaller, therefore easily reaches processing request, and Gearmaking Technology is good, using simple technique
Hardened gear face and the processing of high-precision variable tooth thickness gear can be just completed, the variable tooth thickness gear processing difficulties for solving prior art are asked
Topic, can improve the bearing capacity and running precision of transmission device.Here thickening tooth form refers to the gear teeth its tooth on gear piece
Thickness is incrementally increased by the one of gear piece in the axial direction of gear towards another side.In addition, being embedded between the adjacent gear piece of the present invention
There is vibration and noise reducing piece, vibration and noise reducing piece has high damping characteristic, is embedded between gear piece, can effectively suppress gear engagement
The vibration for causing, i.e., reduce the mesh vibration of gear from root, rotational noise is reduced, so as to reduce noise.Therefore it is of the invention
Structure can solve the problems, such as that the variable tooth thickness gear gearing noise of prior art is big, while the use of gear pair can also be extended
In the life-span, it is particularly well-suited to high-precision transmission device.The gear teeth of the gear are straight-tooth or helical teeth, the modification coefficient of the gear
Along gear axially linear change.
The processing method of described stacked variable tooth thickness gear, it is characterised in that including：By some sheet metals by regulation
Tooth form and size be processed into thickening gear piece, each gear piece is overlapped by the order alignment of regulation, and be glued between gear piece and subtract
Shake noise reduction piece, is fixed all gear pieces by setting screw or rivet in fixing hole, is finally constituted a complete change
Transverse tooth thickness radial shift external tooth wheel construction.
Preferably, the thickness of all inner blades is equal, the thickness of all vibration and noise reducing pieces it is equal and with adjacent gear piece
It is glued, the thickness of the vibration and noise reducing piece is the 15% to 30% of inner blade thickness, and the thickness of outer gear piece is equal and its thickness is interior
3 to 5 times of gear piece thickness.Gear piece of the invention on the basis of screw or rivet are fixed, also with adjacent vibration and noise reducing piece glue
Connect, can so improve the bulk strength of gear.For the vibration and noise reducing piece of identical material, using can improving for larger thickness
Effect of vibration and noise reduction, but the bulk strength of gear can be influenceed；And the thickness of vibration and noise reducing piece is too small, then effect of vibration and noise reduction compared with
Difference, the generally thickness from vibration and noise reducing piece are 15% to 30% proper for inner blade thickness, and the 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 piece considers selection.Outer gear piece of the invention
In addition to the function of undertaking gear, the function of compressing inner blade and vibration and noise reducing piece is also undertaken, therefore the thickness of outer gear piece generally compares
The thickness of inner blade is bigger, so it may also be ensured that the edge strength of gear, it is to avoid ftractureed positioned at outermost gear piece or crimped.
Gear piece of the invention can also use following several further improved structure forms with vibration and noise reducing piece：
1st, the thickness of all inner blades is equal, and all vibration and noise reducing pieces are glued with adjacent gear piece, positioned at the internal tooth that transverse tooth thickness is larger
The thickness of the vibration and noise reducing piece of piece side is more than the thickness of the vibration and noise reducing piece positioned at the less inner blade side of transverse tooth thickness, vibration damping drop
Make an uproar piece thickness along gear axially linear change, the minimum thickness of vibration and noise reducing piece is the 15% to 20% of inner blade thickness, is subtracted
Shake noise reduction piece maximum gauge for inner blade thickness 25% to 30%, the thickness of outer gear piece is equal and its thickness is inner blade thickness
3 to 5 times.In the technical program, the thickness of each inner blade is equal in gear, and the thickness of vibration and noise reducing piece is different, leans on
The thickness of the vibration and noise reducing piece of the nearly larger inner blade side of transverse tooth thickness is larger, and the vibration damping near the less inner blade side of transverse tooth thickness drops
Make an uproar piece thickness it is smaller, and vibration and noise reducing piece thickness along gear axially linear change.This allows for larger interior of transverse tooth thickness
Its appearance and size of gear piece is relatively large, and its resonant frequency is relatively low under same thickness, and the larger vibration and noise reducing piece pair of thickness
There is more preferable damping capacity in the relatively low vibration of frequency, so can be on the premise of vibration and noise reducing piece integral thickness not be increased
The vibration suppression frequency band of broadening gear, reduces the rotational noise of gear, so as to reduce noise.
2nd, the thickness of the thickness of the less inner blade of the transverse tooth thickness inner blade larger 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 is along gear axially linear change, all vibration dampings
The thickness of noise reduction piece is equal and is glued with adjacent gear piece, the thickness of vibration and noise reducing piece 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 piece is equal, and the thickness of inner blade is different, and the thickness of the less inner blade of transverse tooth thickness is larger, transverse tooth thickness
The thickness of larger inner blade is smaller, and it is relatively small that this allows for the less inner blade of transverse tooth thickness its appearance and size, same
Its resonant frequency is higher under thickness, and the appropriate thickness that increases can decline its resonant frequency, it is to avoid the noise band of gear is wide,
The vibration and noise reducing piece for facilitating views with single damping characteristic eliminates the rotational noise of gear, so as to reduce noise.
3rd, the thickness of the thickness of the less inner blade of the transverse tooth thickness inner blade larger 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 is along gear axially linear change；All vibration dampings
Noise reduction piece is glued with adjacent gear piece, is more than positioned at the thickness of the vibration and noise reducing piece of the larger inner blade side of transverse tooth thickness and is located at transverse tooth thickness
The thickness of the vibration and noise reducing piece of less inner blade side, the thickness of maximum gauge vibration and noise reducing piece is minimum thickness vibration and noise reducing
1.5 to 2 times of the thickness of piece, the thickness of vibration and noise reducing piece is along gear axially linear change, the maximum gauge of vibration and noise reducing piece
Be 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.It is the foregoing 1, integration scenario of 2 two schemes in the technical program, its operation principle is basically identical, and structure is relative complex, but
With more preferable effect of vibration and noise reduction.
Preferably, inner blade includes the internal tooth chip architectures of two kinds of different hardness, its is hard for two kinds of inner blades 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, the internal tooth
The total quantity of piece is odd number, and its hardness of inner blade adjacent with outer gear piece higher than inner blade adjacent thereto, adopt by the outer gear piece
Use composite damping steel plate structure.Be conducive to the dispersion of the noise frequency point of inner blade using the inner blade of two kinds of different hardness, from
And reducing the noise peak of same frequency point, it is to avoid noise frequency is concentrated 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 with the inner blade hardness of high rigidity
On the basis of value, the hardness number of the inner blade of soft and the difference of high rigidity inner blade hardness number are hard relative to the inner blade of high rigidity
The percentage of angle value, for example, when the inner blade hardness number of high rigidity is HRC50, the then hardness of the inner blade of soft
It is HRC42.5-HRC45 to be worth；Two kinds of inner blades of different hardness can be the different material of two kinds of hardness, or same
Material obtains two kinds of different hardness by different heat treatment modes；And outer gear piece can also using composite damping steel plate structure
Effectively suppress the propagation of vibration, so as to reduce noise.
Preferably, every vibration and noise reducing piece is made up of single damping material, gear is provided with two kinds by different damping characteristic
The vibration and noise reducing piece that constitutes of damping material, fissipation factor peak values two kinds of frequencies of correspondence of two kinds of vibration and noise reducing pieces, two kinds of vibration dampings
Noise reduction piece is alternately arranged between the gear piece of gear.For the gears of above-mentioned two kinds of different hardness inner blades of use, this skill
The structure of art scheme can be adapted to it, suppress to make an uproar accordingly using two kinds of vibration and noise reducing pieces with correspondence damping characteristic
Sound, can reach good noise reduction.
Vibration and noise reducing piece can also use following structure type：
1st, every vibration and noise reducing piece is made up of single damping material, and gear is provided with the two or more damping materials by different damping characteristic
The vibration and noise reducing piece that material is constituted, the corresponding different frequency of fissipation factor peak value of every kind of vibration and noise reducing piece, different damping characteristic
Vibration and noise reducing piece alternate cycles arrangement between the gear piece of gear.The technical program is directed to three kinds and more than three kinds but sum is small
In the vibration and noise reducing piece situation of gear piece gap number, such as vibration and noise reducing piece is three kinds, but the gear piece gap number of gear is six, this
When three kinds of vibration and noise reducing pieces in the axial direction of gear using the arrangement mode of 1+2+3+1+2+3, the setting of this vibration and noise reducing piece
Scheme is mainly used in broadening vibration and noise reducing piece frequency and suppresses scope, can be in the larger pinion unit of some frequency noise scopes
Used in system.
2nd, every vibration and noise reducing piece is made up of single damping material, and the vibration and noise reducing piece of diverse location is by different resistances on gear
The damping material of damping characteristics is constituted, the every corresponding different frequency of the fissipation factor peak value of vibration and noise reducing piece, different damping characteristic
Frequency size of the vibration and noise reducing piece in the axial direction of gear as corresponding to fissipation factor peak value be arranged in order, it is less with transverse tooth thickness
What the frequency corresponding to the vibration and noise reducing piece that outer gear piece is close to its fissipation factor peak value was close to higher than the outer gear piece larger with transverse tooth thickness
Frequency corresponding to vibration and noise reducing piece its fissipation factor peak value.The technical program be using it is equal number of with gear piece gap number,
Suppress gear noise with different damping characteristic vibration and noise reducing piece, the plan of establishment of this vibration and noise reducing piece be also mainly for
Broadening vibration and noise reducing piece frequency suppresses scope, can be used in the larger gear train assembly of some frequency noise scopes.
Vibration and noise reducing piece of the invention can use polymer damping material, it would however also be possible to employ alloy damping material, different
The different frequency of the damping material of damping characteristic its fissipation factor peak value correspondence, can there is many selections.Such as macromolecule material
The corresponding frequency of ethylene propylene diene rubber in material is 750Hz or so, and butyl rubber is 450Hz or so, and natural rubber is 580Hz left
The right side, CD 2 chlorobutadiene-acrylonitrile copolymer is 250Hz or so；Can also from polyacrylate, polyurethane, epoxy resin and
Nitrile rubber etc..Damping alloy also has a large amount in variety, such as Al-Zn alloys, Mn-Cu alloys, Mg-Zi alloys and Ni-Ti alloys,
Iron-based damping alloy just has various high damping alloy materials such as Fe-Cr-Al, Fe-Al, Fe-Mo, Fe-W, Fe-Cr-Mo, Fe-Cr-Co
Material, the description and its characteristic of vibration and noise reducing material belong to known technology, can be according to disclosed by the invention when actually used
System of selection simultaneously chooses suitable material making vibration and noise reducing piece according to the actual condition of gear or gear train.
Preferably, vibration and noise reducing piece is provided with frequency trim hole, described frequency trim hole is 3 to 6, along inner blade
Be arranged circumferentially, the frequency trim hole on adjacent two panels vibration and noise reducing piece shifts to install.Frequency is set on vibration and noise reducing piece
Rate fine setting hole can finely tune the damped frequency peak point position corresponding to vibration and noise reducing piece, so that vibration and noise reducing piece meets different
Frequency suppress to require that frequency trim hole can be arranged on the vibration and noise reducing piece of part, it is also possible to be arranged on all of vibration damping drop
Make an uproar on piece, when frequency trim hole is respectively provided with adjacent two panels vibration and noise reducing piece, frequency trim hole should be avoided to appear in gear
Same axial direction on, that is, avoid part gear piece both sides while there is the situation of cavity, prevent from causing new vibration.
The processing method of the stacked variable tooth thickness gear of the present invention is：Some sheet metals are added by the tooth form and size of regulation
Work is overlapped each gear piece by the order alignment of regulation into thickening gear piece, and is glued vibration and noise reducing piece between gear piece, by
Screw is set in fixing hole or be fixed for all gear pieces by rivet, be finally constituted a complete change transverse tooth thickness radial shift external tooth
Wheel construction.
The beneficial effects of the invention are as follows：It efficiently solves the variable tooth thickness gear processing difficulties and existing skill of prior art
The big problem of the variable tooth thickness gear gearing noise of art, stacked variable tooth thickness gear of the invention is constituted gear with lamination process, can
Finish to form gear piece with using unlike material, different-thickness, and the sheet metal of different heat treatment state, Gear Processing work
Skill is good, Hardened gear face and the processing of high-precision variable tooth thickness gear can be just completed using simple technique, so as to improve transmission device
Bearing capacity and running precision；And vibration and noise reducing piece is embedded between gear piece, and the mesh vibration of gear is suppressed from root, subtract
Lack rotational noise, extended the service life of gear pair, be particularly well-suited to high-precision transmission device.
Brief description of the drawings
Fig. 1 is a kind of structural representation of stacked variable tooth thickness gear of the 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 pieces of the present invention.
In figure：1. outer gear piece, 2. inner blade, 3. vibration and noise reducing piece, 4. axis hole, 5. fixing hole, 6. frequency trim hole, 7. riveting
Nail.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
In the embodiment 1 shown in Fig. 1 Fig. 2, a kind of stacked variable tooth thickness gear, the gear by 11 have the identical number of teeth and
Gear piece order overlapping with thickening tooth form is constituted, and the gear piece is included located at the outer gear piece 1 at gear axial direction two ends and positioned at two
9 inner blades 2 between individual outer gear piece（See Fig. 3）, the thickness of all inner blades is equal, and the thickness of outer gear piece is inner blade thickness
4 times, vibration and noise reducing piece 3 is embedded between adjacent gear piece, the basic structure of vibration and noise reducing piece is adapted with gear piece, own
The thickness of vibration and noise reducing piece is equal and is glued with adjacent gear piece, and the thickness of the vibration and noise reducing piece is the 30% of inner blade thickness,
The center of gear piece is provided with axis hole 4, and some fixing holes 5 for fixing gear piece are provided with around axis hole, and the outside circle of the gear piece is straight
Footpath and root diameter are incremented by along the same axial direction of gear, and the modification coefficient of gear is inside and outside along gear axially linear change
Gear piece and vibration and noise reducing piece are connected and fixed by the rivet 7 being arranged in fixing hole, and inside and outside gear piece and vibration and noise reducing piece constitute one
Individual complete change transverse tooth thickness radial shift straight-tooth external tooth wheel construction.
Embodiment 2
The gear of embodiment 2 is helical gear, and the thickness of 7 inner blades in gear is equal, 8 vibration and noise reducing pieces and adjacent tooth
Piece is glued, and is more than positioned at the thickness of the vibration and noise reducing piece of the larger inner blade side of transverse tooth thickness and is located at the less inner blade side of transverse tooth thickness
Vibration and noise reducing piece thickness, the thickness of vibration and noise reducing piece is along gear axially linear change, the minimum thickness of vibration and noise reducing piece
Be the 15% of inner blade thickness, the maximum gauge of vibration and noise reducing piece is the 30% of inner blade thickness, the thickness of outer gear piece it is equal and its
Thickness is 3 times of inner blade thickness, and remaining and embodiment 1 are identical.
Embodiment 3
In embodiment 3, gear includes 8 inner blades and 9 vibration and noise reducing pieces, and inner blade has a different thickness, transverse tooth thickness compared with
The thickness of the thickness of the small inner blade inner blade larger more than transverse tooth thickness, the thickness of maximum gauge inner blade is minimum thickness internal tooth
1.8 times of the thickness of piece, the thickness of inner blade along gear axially linear change, the thickness of all vibration and noise reducing pieces it is equal and with
Adjacent gear piece is glued, and the thickness of vibration and noise reducing piece is the 18% of maximum inner blade thickness, and the thickness of outer gear piece is equal and its thickness
It is 2.5 times of the thickness of maximum inner blade, 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 pieces, and inner blade has different thickness, transverse tooth thickness
The thickness of the thickness of the less inner blade inner blade larger more than transverse tooth thickness, the thickness of maximum gauge inner blade is in minimum thickness
1.6 times of the thickness of gear piece, the thickness of inner blade is along gear axially linear change；Vibration and noise reducing piece have different thickness and
It is glued with adjacent gear piece, the thickness positioned at the vibration and noise reducing piece of the larger inner blade side of transverse tooth thickness is less more than transverse tooth thickness is located at
The thickness of the vibration and noise reducing piece of inner blade side, the thickness of maximum gauge vibration and noise reducing piece is the thickness of minimum thickness vibration and noise reducing piece
1.7 times of degree, along gear axially linear change, the maximum gauge of vibration and noise reducing piece is maximum internal tooth to the thickness of vibration and noise reducing piece
The 20% of piece 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 real
Apply example 2 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 pieces, internal tooth
Piece includes the internal tooth chip architectures of two kinds of different hardness, and the difference of the two kinds of inner blade of different hardness its hardness numbers is high rigidity inner blade
The 10% of hardness number, the inner blade of two kinds of different hardness is alternately arranged, and adjacent with outer gear piece its hardness of inner blade is higher than and its phase
Adjacent inner blade, the outer gear piece uses composite damping steel plate structure.The inner blade of two kinds of different hardness of the present embodiment is same
A kind of material is obtained by different heat treatment modes, it is also possible to from the different material of two kinds of hardness.Every of embodiment 5 subtracts
The noise reduction piece that shakes is made up of single damping material, and gear is provided with two kinds of vibration and noise reducings being made up of the damping material of different damping characteristic
Piece, two kinds of fissipation factor peak value two kinds of frequencies of correspondence of vibration and noise reducing piece, two kinds of vibration and noise reducing pieces are handed between the gear piece of gear
For arrangement, remaining and embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4 are identical.
Embodiment 6
In embodiment 6, gear includes 5 inner blades and 6 vibration and noise reducing pieces, and every vibration and noise reducing piece is by single damping material
Constitute, gear is provided with three kinds of vibration and noise reducing pieces being made up of the damping material of different damping characteristic, the damage of every kind of vibration and noise reducing piece
Consumption factor peak value correspondence not frequency, the vibration and noise reducing piece of the different damping characteristic alternate cycles arrangement between the gear piece of gear.This
The vibration and noise reducing piece of embodiment is three kinds, and the gear piece gap number of gear is six, and three kinds of vibration and noise reducing pieces are in the axial direction of gear
Using the arrangement mode of 1+2+3+1+2+3, remaining and embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4 are identical.
Embodiment 7
In embodiment 7, gear includes 6 inner blades and 7 vibration and noise reducing pieces, and every vibration and noise reducing piece is by single damping material
Constitute, the vibration and noise reducing piece of diverse location is made up of the damping material of different damping characteristic on gear, every vibration and noise reducing piece
The different frequency of fissipation factor peak value correspondence, the vibration and noise reducing piece of different damping characteristic presses fissipation factor peak in the axial direction of gear
The corresponding frequency size of value is arranged in order, its fissipation factor peak value institute of the vibration and noise reducing piece that outer gear piece less with transverse tooth thickness is close to
Frequency corresponding to corresponding frequency is close to higher than the outer gear piece larger with transverse tooth thickness vibration and noise reducing piece its fissipation factor peak value, its
Remaining and embodiment 1 or embodiment 2 or embodiment 3 or embodiment 4 are identical.
Embodiment 8
In embodiment 8, vibration and noise reducing piece is provided with frequency trim hole 6（See Fig. 4）, described frequency trim hole is 3, along interior
Gear piece is arranged circumferentially, and the frequency trim hole on adjacent two panels vibration and noise reducing piece shifts to install, and the present embodiment drops in vibration damping
Make an uproar and the structure type in frequency trim hole is set on piece can be used on the vibration and noise reducing piece of any of the above described one embodiment, that is, exist
The middle of above-described embodiment 1-7 just constitutes the new embodiment of the present invention using the vibration and noise reducing piece with frequency trim hole, and frequency is micro-
Adjusting hole can be arranged on the vibration and noise reducing piece of part, it is also possible to be arranged on all of vibration and noise reducing piece.
Vibration and noise reducing piece of the invention can use polymer damping material, it would however also be possible to employ alloy damping material, different
The different frequency of the damping material of damping characteristic its fissipation factor peak value correspondence, can there is many selections.Such as macromolecule material
The corresponding frequency of ethylene propylene diene rubber in material is 750Hz or so, and butyl rubber is 450Hz or so, and natural rubber is 580Hz left
The right side, CD 2 chlorobutadiene-acrylonitrile copolymer is 250Hz or so；Can also from polyacrylate, polyurethane, epoxy resin and
Nitrile rubber etc..Damping alloy also has a large amount in variety, such as Al-Zn alloys, Mn-Cu alloys, Mg-Zi alloys and Ni-Ti alloys,
Iron-based damping alloy just has various high damping alloy materials such as Fe-Cr-Al, Fe-Al, Fe-Mo, Fe-W, Fe-Cr-Mo, Fe-Cr-Co
Material, the description and its characteristic of vibration and noise reducing material belong to known technology, can be according to disclosed by the invention when actually used
System of selection simultaneously chooses suitable material making vibration and noise reducing piece according to the actual condition of gear or gear train.
The processing method of the stacked variable tooth thickness gear of the present invention is：Some sheet metals are added by the tooth form and size of regulation
Work is overlapped each gear piece by the order alignment of regulation into thickening gear piece, and is glued vibration and noise reducing piece between gear piece, by
Screw is set in fixing hole or be fixed for all gear pieces by rivet, be finally constituted a complete change transverse tooth thickness radial shift external tooth
Wheel construction.
If variable tooth thickness gear of the invention is formed by stacking by the gear piece that dry plate has thickening tooth form, 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, vibration and noise reducing piece is embedded between adjacent gear piece,
Inside and outside gear piece and vibration and noise reducing piece are fixed by the screw or rivet joint in fixing hole, so that constituting an entirety becomes transverse tooth thickness
Gear.Variable tooth thickness gear is constituted using lamination process, because single gear piece thickness is smaller, therefore processing request, tooth is easily reached
Wheel processing technology is good, and Hardened gear face and the processing of high-precision variable tooth thickness gear can be just completed using simple technique, solves existing
There is the problem of the variable tooth thickness gear processing difficulties of technology.In addition, vibration and noise reducing piece is embedded between the adjacent gear piece of the present invention,
Vibration and noise reducing piece has high damping characteristic, is embedded between gear piece, can effectively suppress the vibration that gear engagement causes, i.e.,
The mesh vibration of gear is reduced from root, rotational noise is reduced, so as to reduce noise.Therefore structure of the invention can be solved
The big problem of the variable tooth thickness gear gearing noise of prior art, while the service life of gear pair can also be extended, it is particularly suitable
In high-precision transmission device.
In addition to the implementation, in the scope disclosed in claims of the present invention and specification, skill of the invention
Art feature or technical data can be reselected and combined, so as to constitute new implementation method, these present invention are without detailed
The implementation method of thin description is that those skilled in the art can just realize easily without creative work, therefore these are not detailed
The implementation method of description also should be regarded as specific embodiment of the invention and within protection scope of the present invention.
Claims (2)
1. a kind of stacked variable tooth thickness gear, it is characterised in that：If the gear has the identical number of teeth and with thickening by dry plate
The gear piece order overlapping of tooth form is constituted, and the gear piece includes the outer gear piece located at gear axial direction two ends（1）And positioned at two external tooths
Some inner blades between piece（2）, the thickness of outer gear piece is embedded with vibration damping more than the thickness of inner blade between adjacent gear piece
Noise reduction piece（3）, the center of gear piece is provided with axis hole（4）, some fixing holes for fixing gear piece are provided with around axis hole（5）, it is described
The tip diameter and root diameter of gear piece are along the same axial increasing or decreasing of gear, inside and outside gear piece and vibration and noise reducing piece
Constitute a complete change transverse tooth thickness radial shift external tooth wheel construction；
Inner blade includes the internal tooth chip architectures of two kinds of different hardness, and the difference of the two kinds of inner blade of different hardness its hardness numbers is high hard
The 10% to 15% of degree inner blade hardness number, the inner blade of two kinds of different hardness is alternately arranged, and the total quantity of the inner blade is strange
Number, higher than inner blade adjacent thereto, the outer gear piece uses composite damping steel plate to its hardness of inner blade adjacent with outer gear piece
Structure；Every vibration and noise reducing piece is made up of single damping material, and gear is provided with two kinds of damping material structures by different damping characteristic
Into vibration and noise reducing piece, fissipation factor peak values two kinds of frequencies of correspondence of two kinds of vibration and noise reducing pieces, two kinds of vibration and noise reducing pieces are in gear
Gear piece between be alternately arranged；
The gear teeth of the gear are straight-tooth or helical teeth, and the modification coefficient of the gear is along gear axially linear change；
Vibration and noise reducing piece is provided with frequency trim hole（6）, described frequency trim hole is 3 to 6, along the circumferential uniform of inner blade
Arrangement, the frequency trim hole on adjacent two panels vibration and noise reducing piece shifts to install.
2. a kind of processing method of stacked variable tooth thickness gear according to claim 1, it is characterised in that including：Will be some
Sheet metal is processed into thickening gear piece by the tooth form and size of regulation, and each gear piece is overlapped by the order alignment of regulation, and
It is glued vibration and noise reducing piece between gear piece, is fixed all gear pieces by setting screw or rivet in fixing hole, last structure
Into a complete change transverse tooth thickness radial shift external tooth wheel construction.
Priority Applications (1)
| 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 |
Applications Claiming Priority (2)
| 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 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510068251.8A Division CN104633049B (en) | 2015-02-09 | 2015-02-09 | Stacked variable tooth thickness gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763647A true CN106763647A (en) | 2017-05-31 |
Family
ID=53212132
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710039920.8A Withdrawn CN106641182A (en) | 2015-02-09 | 2015-02-09 | Gear and processing method thereof |
| CN201710040038.5A Withdrawn CN106763647A (en) | 2015-02-09 | 2015-02-09 | A kind of gear and its processing method that can suppress mesh vibration |
| CN201510068251.8A Expired - Fee Related CN104633049B (en) | 2015-02-09 | 2015-02-09 | Stacked variable tooth thickness gear |
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 |
|---|---|---|---|
| CN201510068251.8A Expired - Fee Related CN104633049B (en) | 2015-02-09 | 2015-02-09 | Stacked variable tooth thickness gear |
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| Country | Link |
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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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5954604A (en) * | 1996-11-21 | 1999-09-21 | Shimano, Inc. | Multiple sprocket assembly for a bicycle |
| JP2000234242A (en) * | 1998-12-10 | 2000-08-29 | Toyota Autom Loom Works Ltd | Wheel for rapier loom |
| 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 |
-
2015
- 2015-02-09 CN CN201710039920.8A patent/CN106641182A/en not_active Withdrawn
- 2015-02-09 CN CN201710040038.5A patent/CN106763647A/en not_active Withdrawn
- 2015-02-09 CN CN201510068251.8A patent/CN104633049B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104633049B (en) | 2016-11-30 |
| CN106641182A (en) | 2017-05-10 |
| CN104633049A (en) | 2015-05-20 |
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Application publication date: 20170531 |