CN108533708A - Thrust gear hobbing gear and the transmission device for using such gear - Google Patents
Thrust gear hobbing gear and the transmission device for using such gear Download PDFInfo
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- CN108533708A CN108533708A CN201810611813.2A CN201810611813A CN108533708A CN 108533708 A CN108533708 A CN 108533708A CN 201810611813 A CN201810611813 A CN 201810611813A CN 108533708 A CN108533708 A CN 108533708A
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- rolling element
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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
- F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
- F16H13/02—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members without members having orbital motion
- F16H13/04—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members without members having orbital motion with balls or with rollers acting in a similar manner
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Abstract
The present invention is a kind of gear hobbing and the transmission device using this gear hobbing, it is related to mechanical transmission fields, main purpose is to provide a kind of gear hobbing being driven completely without needle roller, main technical schemes are by the rational design to raceway and rolling element, it directly completes to be driven with the thrust between rolling element, there is the torque bigger that can bear compared with known gear hobbing gear, be driven more stably feature.Raceway and rolling element can be combined into cylinder gear hobbing, circular cone gear hobbing, face hobbing or other shapes of gear hobbing.When in transmission system in use, its common trait is：Thrust gear hobbing gear is engaged at least two gears simultaneously.Such thrust gear hobbing gear can use in plane less teeth difference transmission, nutation drive and other transmission mechanisms.
Description
Technical field
The present invention relates to the structure of gear hobbing gear and the transmission device of the gear hobbing gear as transmission parts is used, belongs to machine
Tool technical field.
Background technology
The gear hobbing gear being well known at present is arranged by even circumferential using the center of an ontology as around the center of circle
Row or it is radial it is evenly distributed there is rolling element, rolling element to be kept the fixed position that frame or ontology itself are fixed on ontology,
The protrusion of middle rolling element constitutes the flank of tooth of gear hobbing.Such as Japanese Unexamined Patent Publication 2006-82718 and Japanese patent application 2009-
004859, it is all made of above structure, above-mentioned rolling element will appear climbing tooth when being detached from the tooth socket from the gear being engaged with existing
As that is, rolling element is detached from from ontology to the direction of the tooth for the gear being engaged with, due to the blocking of retainer or ontology, rolling element
Friction with obstacle increases, and fails to be detached from, but this process increases noise, has lost energy, increases the fatigue of material
Loss.Rolling element and ontology or retainer are all sliding friction states in entire engagement process, therefore someone is just in rolling element
Needle bearing is mounted between ontology, but which increase the complexity of gear hobbing structure, and reduce the stress pole of gear hobbing
Limit, to limit the transmission ratio of gear hobbing gear.It is proposed in Japanese patent application 2009-004859 and changes gear hobbing and engaging tooth
The method of contact angle inhibit climbing tooth phenomenon, but inevitably, gear hobbing can skid in tooth socket, generate unnecessary mill
Damage.
Invention content
The purpose of the present invention is improveing the structure of gear hobbing gear, a kind of completely new thrust gear hobbing gear is manufactured, keeps it simpler
It is clean, efficiently and be more easily manufactured.
The technical scheme is that：Thrust gear hobbing gear, characterized in that at least two cycle raceways staggered relatively
Between, it is disposed with the rolling element of the different raceways of at least two contacts, whether the type of rolling element is by completely attaching to identical raceway
It distinguishes, contact raceway difference is not then same kind of rolling element, and contact raceway is identical, is same kind of rolling
Body.The diameter of different types of rolling element need not be equal, but should ensure that each rolling element is evenly spaced by another rolling element,
Rolling element evenly distributed formation complete cycle successively, rolling element can be with respect to rolling path rollings, and wherein at least one rolling element is from raceway
A middle exposing part, the tooth of the part of exposing as gear hobbing gear.It can be transmitted between variety classes and adjacent rolling element along rolling
The thrust of kinetoplast radial direction, raceway and rolling element can be combined into cylinder gear hobbing, circular cone gear hobbing, face hobbing or other shapes
Gear hobbing.When above-mentioned gear hobbing gear is arranged in transmission device, needs while being engaged at least two gears, by between rolling element
Thrust complete to be driven.This thrust gear hobbing gear can be applied to plane less teeth difference transmission, nutation drive or other transmissions dress
It sets.
The present invention clear superiority be：It is to roll between the rolling element to contact with each other and between rolling element and raceway
Friction need not install needle roller or especially lubrication, gear hobbing each section stress evenly, can bear bigger in smaller size
Torque, it is quieter in transmission process, steady, the application scenarios of gear hobbing gear will be widened.
According to the thrust gear hobbing gear structure that the application proposes, a kind of four raceway thrust gear hobbing gears can be designed, rolling can be made
Thrust angle smaller between kinetoplast, it is characterized in that：Between at least four coaxial independently rotary different raceways, arrangement
There are two types of or a variety of rolling elements, same rolling element be not directly contacted with, i.e.,：Each rolling element both sides is all other kinds of rolling
Body.Should also there are connection or the hold assembly for keeping different raceways to have been at coaxial relative position between four raceways, it is this
Connection or hold assembly can be the components for including bearing.This hold assembly can also be applied to two or more pieces independence raceway
Thrust gear hobbing gear.
The present patent application will disclose the shape of several rolling elements and gear hobbing, be content in order to further illustrate the present invention,
It is not meant to limit the present invention the shape of signified rolling element and gear hobbing.The thrust gear hobbing gear knot proposed according to the application
Structure, rolling element therein can be the arbitrary shapes for having rotary shaft, and single rolling element can be an entirety, can also be by not
Made of component combination.As a kind of Curve guide impeller of rolling element, when the diameter of a rolling element changes on its axis
When change, corresponding contour line line should constitute obtuse angle or smoothed curve, it is therefore an objective to make the distribution of stress evenly.
According to the thrust gear hobbing gear structure that the application proposes, as a kind of rolling element and the mutually matched design of raceway,
Raceway has the rib coordinated with rolling element.It is designed as another kind, also having between rolling element prevents axis of the rolling element along rolling element
The opposite sliding in direction design.This design can be had from adjacent rolling element with radial concave-convex shape and mutually embedding
Enter, the rolling element of raceway and contact has the design of the shape of mutual cooperation to complete, can also be by being designed between rolling element
Retainer and retainer can be completed along the design that raceway moves.
According to the thrust gear hobbing gear structure that the application proposes, a kind of thrust cylindrical gear hobbing gear can be designed that.It is special
Sign is：
At least inside and outside two or four diameters different concentric cylinder raceway are evenly arranged different rollings between raceway
Column is not directly contacted between same roller, and at least a kind of roller exposes a part from raceway in different rollers, dew
Tooth of the part gone out as gear hobbing gear.Roller can expose from the end of raceway, can also expose from the waist of raceway.Work as rolling
The raceway of the same side becomes upper and lower two coaxial raceways when column exposes from raceway waist, in addition to the rolling as external tooth or internal tooth
The rolling element of body, other types can be that one or seperated, fission are formed when designing up and down：By upper layer and lower layer rolling element
Collectively form the form of the rolling element of the same side.
According to the thrust gear hobbing gear structure that the application proposes, a kind of thrust circular cone gear hobbing gear can be designed that.It is special
Sign is：
At least coaxial opposed circular conical surface raceway of two or more pieces up and down has been evenly arranged the rolling of at least two circular cones between raceway
Son is not directly contacted between same taper roller, and at least a kind of taper roller exposes from raceway in various taper rollers
A part, the tooth of the part of exposing as circular cone gear hobbing gear.Taper roller can expose from the end of raceway, can also be from rolling
The waist in road exposes.When taper roller exposes from raceway waist, the raceway of same layer becomes more close to axle center and far from axle center
Raceway, it is characterized in that there are one common tops on geometric space for the extended line of the extended line of roller surface and taper roller axis
Point.As a kind of Curve guide impeller of thrust circular cone gear hobbing gear, the rib and taper roller of taper roller and raceway and holding
The contact surface of device can be spherical surface, and the centre of sphere can be the vertex of circular cone gear hobbing gear, and the rib of raceway and retainer also have
Matched design.
According to the thrust circular cone gear hobbing gear that the application proposes, nutating gear or dead axle can be used as in nutation drive mechanism
Gear uses.In nutation drive mechanism, from perpendicular to the direction of fixed axis gear axis, by measuring and calculating, rolled with thrust circular cone
The flank profil of the tooth of gear engagement should be sine curve or sinusoidal equidistant curve.Using the axis of fixed axis gear as Y-axis,
With a length of X-axis of circumference of circle where two point of mesh, this circle refers to the circle using Y-axis as symmetry axis.If the axis and Y of balance staff gear
The angle of axis is θ, and distance of the meshing point apart from Y-axis is r, and the number of teeth of fixed axis gear is Z, then above-mentioned sine curve meets following public affairs
Formula：
Y=Asin (ZX) formula (1)
A=rtan θ formula (2)
Y is flank profil height in formula, and X is the radian of flank profil circumferentially.
With this sine curve or this sinusoidal equidistant curve, as the flank profil with gear hobbing gear meshed gears,
It is more stable to may make that gear hobbing is engaged with.When using above-mentioned equidistant surface as the flank profil field of conjugate action, if the minimum curvature of sine surface
Radius is R1, the radius for the rolling element being engaged with is R2, then have：R2≤2·R1, formula (3) establishment.
Referring for example to the schematic diagram of Fig. 8, the axis Y of nutating gear2It can be around the axis Y of fixed axis gear1Do balance staff nutating.Nutating tooth
Rolling element O on wheel3The upper point P in outside is the meshing point of tooth on rolling element and fixed axis gear, and point P is with rolling element O3Do nutating rolling
It is dynamic, this time point P distances Y1The distance of axis is r1, work as O3Move to O31When position, point P has moved to P1Position, distance Y at this time1
The distance of axis is r2, r1To r2For from P point to P1The variable of point r in formula (2).The center of circle of rolling element is from O3To O31Movement
Track can regard one as with RaFor major radius, RbFor the ellipse of short radius, with Y1For the movement in the cylindrical space of axis
Projection, the center of circle movement locus of rolling element is curve shown in formula (1) and (2).
In order to which the conical gear for making thrust circular cone gear hobbing gear and being engaged with is completely concentric, and for increase thrust circle
Cone gear hobbing gear can bear the purpose of torque, need the diameter for increasing generating roll body, and the flank profil of the tooth engaged with gear hobbing can be with
It uses using the equidistant curve that sine curve is generated as busbar shown in formula (1) and (2), in order to ensure that rolling element is transported
It is dynamic steady, so formula (3) is set up.
According to the thrust gear hobbing gear that the application proposes, can in nutation drive mechanism using thrust circular cone gear hobbing gear or
Person uses thrust cylindrical gear hobbing gear in plane few tooth difference transmission mechanism, is characterized in jointly：Thrust gear hobbing gear is simultaneously
The gear engagement different with two numbers of teeth, is moved by plane balance staff or nutating balance staff moves, and completes less teeth difference transmission.
Thrust cylindrical gear hobbing gear is used in plane few tooth difference transmission mechanism, it is characterized in that：One ring gear cylinder rolling
Gear as foreign steamer, centre be two numbers of teeth different gear wheel and pinion gear simultaneously and as foreign steamer ring gear gear hobbing tooth
Wheel engagement, foreign steamer, gear wheel are parallel with pinion axes, and foreign steamer axis is fixed, and gear wheel and pinion gear are simultaneously around foreign steamer axis
Do balance staff movement, the axial connecting line of foreign steamer, gear wheel and pinion gear is kept point-blank during this, gear wheel axle center and
Pinion gear axle center is respectively on the both sides of the felling axe heart.Because gear wheel is different with pinion gear size, the radius of balance staff movement is done
Difference and bent axle or the size of other components, quality, moving radius that they are moved together are all different, so needing by setting
Meter finds the inertial balance that they do balance staff movement, and whole part is made to be in the state of stable equilibrium.
The axis of gear wheel is such as set at a distance from foreign steamer axis as R3, the axis of pinion gear is R at a distance from foreign steamer axis4,
The quality sum that the quality of gear wheel adds all components for doing balance staff movement with gear wheel is M1, the quality of pinion gear add with
The quality sum that pinion gear does all components of balance staff movement is M2, then have：M1·R3 2=M2·R4 2, formula (4) establishment.
Using the so-called thrust circular cone gear hobbing gear of the present invention in nutating few tooth difference transmission mechanism, it is characterized in that：Have two
A first gear opposite to each other up and down and second gear, first gear and second gear are the different bevel gear of the number of teeth, first gear
Axis with second gear is same straight line, is main shaft, is third gear, third tooth between first gear and second gear
Wheel is the thrust circular cone gear hobbing gear that a upper and lower surface all exposes gear hobbing, and three cone of gears vertexs of surface are same point, on vertex
Position is equipped with universal joint, and the centre of sphere and conical surface vertex position of universal joint are same point, and one end of universal joint and third gear are small
The raceway clamping device at end is connected, and the other end and torsion plate are connected.
The axis of third gear is secondary axis, and secondary axis meets at conical surface vertex with main shaft, and nutating pendulum can be done around main shaft
Axis moves, and the gear hobbing that third gear exposes from upper and lower surface is engaged with first gear and second gear simultaneously respectively.Third gear
Two raceways up and down at big end are clamped by a mechanism, and secondary axis is made to keep a fixed nutational angle with respect to main shaft
Degree.
As seen from the above description, inertia is not readily reachable by balance to whole device in the running, and the present inventor proposes, with
Most of boundaries that the parts such as the raceway, clamping device, gear hobbing of nutation movement are made in upper-part, by using conical surface vertex as vertex
It the conical surface and is collectively constituted by the concentric spherical of the centre of sphere of conical surface vertex, and by the Mass Distribution of big end clamping device come balance exercise
Inertia.
Referring for example to the schematic diagram of Fig. 9, with main shaft Y1For the longitudinal axis, to pass through conical surface vertex O2And perpendicular to Y1Straight line
X1For horizontal axis, then four quadrants are divided on vertical section, upper right is first quartile, and upper left is the second quadrant, and lower-left is third
Quadrant, bottom right are fourth quadrant.On same vertical section, if：The quality of parts is M in first quartile3, barycenter is in M3Position；
The quality of parts is M in second quadrant4, barycenter is in M4Position；The quality of parts is M in third quadrant5, barycenter is in M5Position
It sets；The quality of parts is M in fourth quadrant6, barycenter is in M6Position.M3Apart from longitudinal axis Y1Distance be R5, M4Apart from the longitudinal axis
Line Y1Distance be R6, M5Apart from longitudinal axis Y1Distance be R7, M6Apart from longitudinal axis Y1Distance be R8, because each particle is most
Number is distributed according to concentric spherical, can be easier by adjusting Mass Distribution of the big end clamping device in all quadrants so that
In horizontal axis X1Around longitudinal axis Y1When horizontal rotation,
M3·R5 2+M6·R8 2=M4·R6 2+M5·R7 2Formula (5) is permanent to be set up.
It is same because being homocentric sphere design, can be easier to so that
M3·R5 2=M4·R6 2Formula (6)
M5·R7 2=M6·R8 2Formula (7)
M3·R5 2=M4·R6 2=M5·R7 2=M6·R8 2Formula (8)
Perseverance is set up
With reference to attached drawing, by the description of following implementation, advantage of the invention can be defined further.
Description of the drawings
Fig. 1 is the simple schematic diagram of several principles that raceway and rolling element are put in thrust gear hobbing gear.Fig. 1 a are two rollings
The case of two rows of rolling elements is directly clamped among road；Fig. 1 b are the cases that two kinds of rolling elements are clamped in four raceways；Fig. 1 c are Fig. 1 a
With the superposition of Fig. 1 b.
Fig. 2 is the sectional view of the inside and outside thrust cylindrical gear hobbing gear for exposing tooth.
Fig. 3 is the structure elucidation figure of split type combination rolling element and raceway.
Fig. 4 is the diagrammatic cross-section of tapered roller body and raceway cooperation in circular cone thrust gear hobbing.
Fig. 5 is a kind of raceway, rib and the sectional view for rolling mates design.
Fig. 6, which is adjacent rolling element, the radial concave-convex shape of cooperation and mutually embedded, the rolling element of raceway and contact
There is the sectional view of the cases of design of the shape of mutual cooperation.
Fig. 7 be it is a kind of designing retainer and retainer between rolling element can be along the section view for the cases of design that raceway moves
Figure.
Fig. 8 is the schematic diagram for the nutating gear hobbing theory of engagement for illustrating formula (1) and formula (2).
Fig. 9 is the principle schematic of barycenter distribution and balance in nutating thrust gear hobbing transmission mechanism.
Figure 10 is the sectional view for the thrust circular cone gear hobbing gear for exposing tooth up and down.
Figure 11 is a kind of diagrammatic cross-section for applying thrust circular cone gear hobbing gear case in nutation drive mechanism.
Figure 11 a are the thin portion diagrammatic cross-sections of circular cone gear hobbing in Figure 11.
Figure 12 is a kind of diagrammatic cross-section for applying thrust cylindrical gear hobbing gear case in plane few tooth difference transmission mechanism.
Figure 13, which is one end, has the thrust cylindrical gear hobbing gear raceway of four raceways and the amplification profile of rolling element contact site to show
It is intended to.
Figure 14, which is one end, has the thrust circular cone gear hobbing gear raceway of four raceways and the amplification profile of rolling element contact site to show
It is intended to.
Figure 15, which is one end, has four raceways, different rolling elements to be inserted into the tangent schematic diagram of raceway mutually.
Symbol description in figure：A1 --- the first rolling element；A11 --- the rolling element with raceway-lip cooperation；a2——
Second of rolling element；A3 --- the third rolling element；A4 --- the 4th kind of rolling element；A5 --- the part being recessed on rolling element；
The part that a6 --- rolling element protrudes above；B1 --- the first raceway；B11 --- to expose gear hobbing, what the first raceway was divided out
One end；B2 --- the second raceway；B22 --- to expose gear hobbing, one end that the second raceway is divided out；B3 --- third raceway；
B4 --- the 4th raceway；B5 --- there is the raceway of rib；The rib of b6 --- raceway；B7 --- match with rolling shape on raceway
The design of conjunction；C --- plug；D --- jack；F --- the direction of transmitting thrust between rolling element；The gear hobbing of e --- exposing；
E1 --- the tooth engaged with gear hobbing；E2 --- the tooth being detached from from gear hobbing；The hole that j1 --- the first rolling element is inserted into；J2 --- the
The hole that two kinds of rolling elements are inserted into；H --- inclined-plane；K --- retainer；Y1 --- main shaft；Y2 --- balance staff；Y3 --- rolling element
Axis；P --- raceway hold assembly；Y4 --- balance staff；P1 --- the raceway hold assembly of thrust circular cone gear hobbing gear small end；
P2 --- the raceway hold assembly of thrust circular cone gear hobbing gear big end；T --- fixing bolt, q --- the example of figure middle (center) bearing；
The bearing or rolling element of q1 --- hold assembly；S1 --- plane gear wheel；S2 --- plane pinion gear；S3 --- small bevel gear
Wheel；S4 --- bevel gear wheel；N --- universal joint or Hooks coupling universal coupling；G1 --- input shaft；G2 --- output shaft；G3 --- it is bent
Axis；W --- end face.
Specific implementation mode
It is described with reference to the preferred embodiment of the present invention.
Fig. 1 is to indicate raceway and rolling element are put in thrust gear hobbing gear the simple schematic diagram of several principles.Wherein Fig. 1 a
Direct cases of the two rows of rolling elements of clamping among two raceways, placed among two raceways of b1 and b2 in figure rolling element a1 and
A2, since the distance of b1 and b2 is slightly larger than the diameter of a1 or a2, when being packed into enough rolling elements in raceway, a1 and a2 can
To be pressed against different raceways, to realize apart from one another by and contact different raceways, the f in figure has been marked between each rolling element
The line at point of contact, that is, thrust direction of transfer, be a broken line as seen from the figure.So thering is rigidity to want rolling element and raceway
It asks, rigidity is higher, and thrust loss is smaller.Through measuring and calculating, under same material and gear diameter, such raceway gear hobbing design is in cone tooth
It applies in wheel and is got well than the application effect in stud wheel.
In order to further increase the efficiency of thrust transmission, just there is the design of four raceways, such as four raceways folder in Fig. 1 b
The case of two kinds of rolling elements is held, rolling element a1 and a2 are spaced apart, and a1 is rolled among raceway b1 and b4, and a2 is in raceway b2 and b3
Among roll, a1 and a2 are tangent in raceway b1 and b4, therefore, can regard the rolling element a2 stretched out from raceway b2 and b3 as
In raceway b1 and b4 and a1 is tangent.Diameters of the rolling element a2 in raceway b2 and b3 can be different with the diameter of extension,
To increase the torque of antitorque pendulum.In order to further increase the ability of antitorque pendulum, can be designed to rolling element a1 also from raceway b1 and
It is stretched out in b4 in a part to raceway b2 and b3 and rolling element a2 is tangent, specifically can refer to Figure 15.Rolling element a1 and a2 in Figure 15
It is spaced apart, a1 is contacted with raceway b1 and b4 (b4 raceways omit in figure) simultaneously, and is stretched out a part and arrived raceway b2 and b3
The neutralization rolling element a2 of (b3 raceways omit in figure) is tangent, and a2 is rolled among raceway b2 and b3, and stretches out a part to rolling
The neutralization rolling element a1 of road b1 and b4 (b4 raceways omit in figure) are tangent, and a part is extended downwardly out from rolling element a1 to raceway
Outside becomes gear hobbing e.
Fig. 1 c are the superposition of Fig. 1 a and Fig. 1 b, have more rolling elements to participate in jointly, and principle is similar, thrust direction line f at
Two lines more balance and stablize.
Fig. 3 to Fig. 7 is rolling element and the thin portion enlarged diagram of raceway contact part, and main purpose is to maintain rolling element and exists
It is rolled and is easily installed by the route of design in raceway.
Figure 11 is a kind of diagrammatic cross-section for applying thrust circular cone gear hobbing gear case in nutation drive mechanism.In this case
In example, two bevel gears s3 and s4 are coaxially opposed with vertex, and the number of teeth is different, their common axis are main shaft Y1.Nutating gear
For thrust circular cone gear hobbing gear, axis is balance staff axis Y2, balance staff axis does nutating swing around main shaft, thrust during this
The tooth of circular cone gear hobbing gear is always held at different sides while being engaged with two mainshaft gears, and upper right quarter and s3 are nibbled in figure
It closes, lower left quarter and s4 engagements.The small end of thrust circular cone gear hobbing gear is by raceway clamping device p1 and in the universal of vertex position
One end of shaft coupling n is connected, and the other end and bevel gear s4 of Hooks coupling universal coupling are connected, when bevel gear s4 is fixed, thrust circle
Cone gear hobbing gear big end raceway clamping device p2 can connect input shaft, due to big end raceway clamping device p2 clamping part be and
The circular conical surface of raceway b5 fittings, and outer end face w is with the symmetrical disc of main shaft, so being rotated around the spindle when clamping device p2 encloses
When, under the collective effect of clamping face and raceway and Hooks coupling universal coupling fixed vertices, thrust gear hobbing can be in two bevel gear s3
Less teeth difference transmission is completed between s4.If the number of teeth of thrust circular cone gear hobbing gear is z1, the number of teeth of gear s3 is z2, gear s4
The number of teeth be z3, the relationship of three can be：Z1=z2+2=z3+1, then transmission ratio is z3: 1.
For the ease of installation, raceway clamping device p1 and p2 can be separately manufacturings, be fixed again after installation.In order to more preferable
Balance nutating gear and linkage part do the inertia when movement of nutating balance staff, the end face of raceway b5 and the interior table of clamping device p2
Face is to reach dynamic equilibrium by adjusting the outer diameter of clamping device p2 using vertex as the concentric circles of the centre of sphere.
Figure 12 is a kind of diagrammatic cross-section for applying thrust cylindrical gear hobbing gear case in plane few tooth difference transmission mechanism.
In this case, the p clampings of raceway clamping device are a thrust cylindrical gear hobbing gears, and raceway b1 or more has rib, raceway
B2 and b22 is only to have rib on one side, and a part for rolling element is exposed between raceway b2 and b22 and becomes gear hobbing e, gear hobbing e
Ring gear is formed, axis is main shaft Y1, two cycloid gears s1 and s2 are engaged with left and right two parts of ring gear respectively.Pendulum
The axis of line gear s1 is balance staff Y2, the axis of cycloid gear s2 is balance staff Y4, when input shaft g1 is around main axis, bent axle g3's
Under effect, two cycloid gears do balance staff movement, and two gears is made to be engaged simultaneously with the ring gear of gear hobbing e compositions always.By
It is different in the number of teeth of cycloid gear s1 and s2, less teeth difference transmission is completed under the thrust between rolling element, drives output shaft
G2 rotates.
Since the number of teeth of cycloid gear s1 and s2 is different, so diameter and the amplitude of balance staff movement also differ, pinion gear
The balance staff amplitude of s2 is more than gear wheel s1, can be by thickness in the middle part of adjustment gear and in company with doing balance staff fortune to make inertial balance
The means such as the weight of dynamic component reach inertial balance.The axis of gear wheel is such as set at a distance from foreign steamer axis as R3, small tooth
The axis of wheel is R4 at a distance from foreign steamer axis, and the quality of gear wheel adds the matter for all components that balance staff movement is done with gear wheel
The sum of amount is M1, and it is M2 that the quality of pinion gear, which adds and does the quality sum of all components of balance staff movement with pinion gear, then passes through
Each section quality is adjusted to make formula：M1·R32=M2R42, set up.
When using four raceways in the same end of rolling element, should be clamped using clamping device, Figure 13 and Figure 14 are
The amplification profile schematic diagram of thrust gear hobbing gear raceway and rolling element contact site when having four raceways, in this case, clamping part
Part ensures that raceway is rotated freely in the case where position is constant by rolling element q1 and raceway contact.
In addition, thrust gear hobbing gear proposed by the invention can be used in combination with other kinds of transmission mechanism, and
It can be used in combination with motor or other actuating units, using in such as joint of robot, motor turning, lifting equipment, elevator etc.
It needs in the mechanical equipment being driven.
Claims (10)
1. thrust gear hobbing gear, it is characterized in that：
Between at least two or more cycle raceways staggered relatively, it is disposed with the rolling of the different raceways of at least two contacts
Whether the type of body, rolling element is identical, is distinguished by whether they completely attach to identical raceway, and contact raceway difference is not then
Same kind of rolling element, contact raceway is identical, is same kind of rolling element.The diameter of different types of rolling element
Need not be equal, but should ensure that each rolling element is evenly spaced by another rolling element, i.e.,：All it is another beside each rolling element
Kind rolling element.Evenly distributed formation complete cycle, rolling element can roll rolling element with respect to rolling path rolling, wherein at least one successively
Body exposes a part from raceway, the tooth of the part of exposing as gear hobbing gear.It can between variety classes and adjacent rolling element
Transmitting thrust, raceway and rolling element can be combined into cylinder gear hobbing, circular cone gear hobbing, face hobbing or other shapes of gear hobbing.
When in transmission system in use, its common trait is：Thrust gear hobbing gear is engaged at least two gears simultaneously.
2. the thrust gear hobbing gear as described in claims 1, it is characterized in that：
Between at least two or four coaxial independently rotary different raceways, two or more rolling elements are disposed with, together
A kind of rolling element is not directly contacted with, i.e.,：Each rolling element both sides is all other kinds of rolling element.Should also between four raceways
It can be packet to have connection or the hold assembly for keeping different raceways to have been at coaxial relative position, this connection or hold assembly
Component containing bearing.This hold assembly is applied to the thrust gear hobbing gear for having two or more pieces independence raceway.When this clamping
Component is applied in the big end of nutating gear, and the contact surface of hold assembly and raceway should be the inclination using nutation shaft as symmetry axis
Face, and the outer end face of hold assembly should have the face using main shaft as symmetry axis.
3. the rolling element in the thrust gear hobbing gear as described in claims 1 and 2, it is characterized in that：
Rolling element therein can be the arbitrary shape for having rotary shaft, and single rolling element can be an entirety, can also be by
Made of different component combinations；The rolling element of the same rotary shaft can be integrated or segmentation.As a kind of rolling element
Curve guide impeller, when the diameter of a rolling element changes on axis, the outside line of corresponding contour line should
Constitute obtuse angle or smoothed curve, it is therefore an objective to make the distribution of stress evenly.
4. the thrust gear hobbing gear as described in claims 1 to 3, it is characterized in that：
Raceway has the rib coordinated with rolling element, alternatively, also having between rolling element prevents rolling element along the direction of the axis of rolling element
The design of opposite sliding.This design can be had the radial concave-convex shape of cooperation and mutually insertion from adjacent rolling element,
Raceway and the rolling element of contact have the design of the shape of mutual cooperation to complete, and can also be kept by being designed between rolling element
Frame and retainer can be completed along the design that raceway moves.
5. according to a kind of thrust cylindrical gear that claims 1 to 4 design, it is characterized in that：Can be internal-gear or external tooth
Gear is inside and outside all with teeth, is characterized in having jointly：At least inside and outside two or four independently rotary coaxial
Cylindrical raceway is evenly arranged different rollers between raceway, is not directly contacted between same roller, in different rollers
At least a kind of roller exposes a part from raceway, the tooth of the part of exposing as gear hobbing gear.Roller can be from raceway
End is exposed, and can also be exposed from the waist of raceway.When roller exposes from raceway waist, the raceway of the same side becomes upper and lower two
The coaxial raceway of item, in addition to the rolling element as external tooth or internal tooth, the rolling element of other types can be integrated up and down or divide
Body, fission is formed when designing：The form of the rolling element of the same side is collectively formed by upper layer and lower layer rolling element.
6. a kind of thrust circular cone gear hobbing gear designed according to claims 1 to 5.It is characterized in that：At least up and down two or
A plurality of coaxial opposed circular conical surface raceway has been evenly arranged at least two or a variety of taper rollers, same circular cone between raceway
It being not directly contacted between roller, at least a kind of taper roller exposes a part from raceway in two or more taper rollers,
Tooth of the part of exposing as circular cone gear hobbing gear.Taper roller can expose from the end of raceway, can also be from the waist of raceway
Expose in portion.When taper roller exposes from raceway waist, the raceway of same layer becomes a plurality of rolling close to axle center and separate axle center
Road, it is characterized in that there are one common vertex on geometric space for the extended line of the extended line of roller surface and taper roller axis.Make
For a kind of Curve guide impeller of thrust circular cone gear hobbing gear, the rib and taper roller of taper roller and raceway and connecing for retainer
Contacting surface can be spherical surface or circular conical surface, and the centre of sphere of spherical surface or the vertex of circular conical surface can be the vertex of circular cone gear hobbing gear, and roll
The rib and retainer in road also have matched design.
7. a kind of nutation drive mechanism, it is characterized in that using the thrust circular cone gear hobbing tooth designed such as claims 1,2,3,4,6
Wheel is used as fixed axis gear in nutation drive mechanism, or as nutating gear, common trait is：With thrust circular cone gear hobbing tooth
The flank profil for taking turns the tooth of engagement should be sine curve or sinusoidal equidistant curve.Such as using the axis of fixed axis gear as Y-axis, with
The a length of X-axis of circumference of circle where a certain dynamic point on tooth curve, this circle refer to the circle using Y-axis as symmetry axis.If balance staff nutating tooth
The axis of wheel and the included angle of Y-axis areDistance of the dynamic point apart from Y-axis on tooth curve is r, and the number of teeth of fixed axis gear is Z,
Then above-mentioned sine curve meets following equation：
Y=Asin (ZX) formula (1)
Y is flank profil height in formula, and X is flank profil using Y-axis as the radian on the circumference of the circle of symmetry axis.
When using above-mentioned sinusoidal equidistant curve as tooth curve, if above-mentioned sinusoidal minimum profile curvature radius is R1, push away
The radius for the rolling element being engaged on power gear hobbing gear is R2, then have formula (3)
R2≤2·R1
It sets up.
8. as the so-called thrust gear hobbing gear of claims 1 to 7 is used in plane less teeth difference transmission or nutation drive system
In system, common trait is：At least while different with the two numbers of teeth gear engagements of thrust gear hobbing gear, pass through the plane of gear
Balance staff moves or the movement of nutating balance staff, and less teeth difference transmission is completed by the thrust between rolling element.
9. so-called thrust cylindrical gear hobbing gear in such as claims 1 to 5 and 8 is used in plane few tooth difference transmission mechanism,
It is characterized in that：Using a ring gear cylinder gear hobbing gear as foreign steamer, centre is the different gear wheel and pinion gear of two numbers of teeth
It being engaged simultaneously with the ring gear gear hobbing gear as foreign steamer, foreign steamer, gear wheel are parallel with pinion axes, and foreign steamer axis is fixed,
Gear wheel and pinion gear do balance staff movement around foreign steamer axis simultaneously, the axial connecting line of foreign steamer, gear wheel and pinion gear during this
It keeps point-blank, gear wheel axle center and pinion gear axle center are respectively on the both sides of the felling axe heart.
It is improved as a kind of optional, such as sets the axis of gear wheel at a distance from foreign steamer axis as R3, the axis and foreign steamer of pinion gear
The distance of axis is R4, it is M that the quality of gear wheel, which adds the quality sum for all components for doing balance staff movement with gear wheel,1, small tooth
The quality sum that the quality of wheel adds all components for doing balance staff movement with pinion gear is M2, then have formula (4)：M1·R3 2=
M2·R4 2, set up.
10. using such as so-called thrust circular cone gear hobbing in claims 1,2,3,4 and 6,8 in nutating few tooth difference transmission mechanism
Gear has：The axis of the different bevel gear of two numbers of teeth opposite to each other up and down, two bevel gears is same straight line, is main shaft,
It is a thrust circular cone gear hobbing gear between two bevel gears, three cone of gears vertexs of surface are same point, are installed in vertex position
There are Hooks coupling universal coupling or the shaft coupling of other deflectable angles, two axis crosspoints of Hooks coupling universal coupling and above-mentioned conical surface vertex position
For same point, one end of shaft coupling is connected with the raceway clamping device of thrust circular cone gear hobbing gear small end.Thrust circular cone gear hobbing tooth
The axis of wheel is secondary axis, and secondary axis meets at vertex with main shaft, and the movement of nutating balance staff, thrust circular cone gear hobbing tooth can be done around main shaft
The gear hobbing exposed on wheel respectively with upper and lower two bevel gears while engaging.Raceway at thrust circular cone gear hobbing gear big end is by one
Mechanism is clamped, and secondary axis is made to keep a fixed nutating angle with respect to main shaft.As a kind of optional improvement, raceway folder
Holding the inner surface of component, to constitute in shape include curved surface using nutation shaft as symmetry axis；As another optional improvement, rolling
It includes to have by the curved surface of symmetry axis or two kinds of improvement of main shaft that the outer surface of road hold assembly, which is constituted in shape,.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062962A (en) * | 2021-04-12 | 2021-07-02 | 王踊 | Anti-rolling thrust hobbing gear and transmission device using same |
| CN113062963A (en) * | 2021-04-12 | 2021-07-02 | 王踊 | Large torque thrust hobbing gear and transmission using same |
| CN113898716A (en) * | 2021-10-21 | 2022-01-07 | 王踊 | Thrust-hobbing gear transmission and device using such a transmission |
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| GB1096779A (en) * | 1964-07-23 | 1967-12-29 | Baldanello U | Improvements in or relating to gear mechanisms and devices driven therethrough |
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| CN113062962A (en) * | 2021-04-12 | 2021-07-02 | 王踊 | Anti-rolling thrust hobbing gear and transmission device using same |
| CN113062963A (en) * | 2021-04-12 | 2021-07-02 | 王踊 | Large torque thrust hobbing gear and transmission using same |
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|---|---|
| CN108533708B (en) | 2022-08-09 |
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