CN106402282A - Eccentric swinging gear unit and manufacturing method thereof - Google Patents
Eccentric swinging gear unit and manufacturing method thereof Download PDFInfo
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- CN106402282A CN106402282A CN201610615632.8A CN201610615632A CN106402282A CN 106402282 A CN106402282 A CN 106402282A CN 201610615632 A CN201610615632 A CN 201610615632A CN 106402282 A CN106402282 A CN 106402282A
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- Prior art keywords
- bearing
- eccentric body
- journals
- held
- bent axle
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/34—Rollers; Needles
- F16C33/36—Rollers; Needles with bearing-surfaces other than cylindrical, e.g. tapered; with grooves in the bearing surfaces
-
- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- 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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- 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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
- F16H2001/323—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear comprising eccentric crankshafts driving or driven by a gearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention provides an eccentric swinging gear unit and a manufacturing method thereof, and the load capacity of a journal bearing can be increased. The eccentric swinging gear unit (1) comprises a housing (10) with inner teeth (12) on the inner circumferential side; a gear rack (20) which is held in the housing in a freely-rotating manner; a crankshaft (30) holding the gear rack in a freely-rotating manner; a swinging gear (40) which is held on the crankshaft and provided with outer teeth (42) engaged with the inner teeth, and swings by means of the crankshaft. The journal part (31a, 31b) of the crankshaft is held on the gear rack by means of a journal bearing (51, 52). The eccentric body (32a, 32b) of the crankshaft is held on the swinging gear by means of an eccentric body bearing (61, 62). The radius (Rj) of the outermost circumference of the rolling body (51C, 52C) of the journal bearing is larger than the sum distance (Rc) of the distance between the central axis of the crankshaft to the anti-eccentric side part of the eccentric body and the thickness of the eccentric body bearing inserted into the eccentric body.
Description
Technical field
The present invention relates to Eccentrically swinging gear device and its manufacture method.
Background technology
The week side of boss that is included is had to the housing of internal tooth and the bias of the wobble gear with the external tooth engaging with internal tooth
, there is the Eccentrically swinging gear device with following structure in oscillating-type geared system：Wobble gear is while make its external tooth and shell
The internal tooth of body engages while carrying out swing rotary, with the swing rotary of wobble gear, is rotatably supported on the tooth of housing
Wheel carrier rotates.
In such geared system, the rotation of housing is restrained.It is supported with bent axle in tooth rest, crankshaft support swing
Gear.Eccentric body, eccentric body and the through hole cooperation located at wobble gear are provided with bent axle.Rotated by this eccentric body, pendulum
Moving gear makes its external tooth engage with the internal tooth of housing while carrying out swing rotary.The rotation of wobble gear is by bent axial tooth
Wheel carrier transmits.Thus, tooth rest rotation (for example, referring to patent document 1 and patent document 2).
Also, as shown in patent document 1 and patent document 2, in this geared system, there is situations below：Gear
Frame includes having discoideus baseplate part and is provided projectingly on the base portion of the axle portion in a face of baseplate part, to be connected to this base
The discoideus end plate of the state fastening on the top of the axle portion in portion.
In such a configuration, generally, axle portion and end plate are fastened by bolts.In addition, the collar of a side of bent axle
Rotatably be held in the through hole being formed at baseplate part by the bearing of journals, the collar of the another side of bent axle by
The bearing of journals is rotatably held in the through hole being formed at end plate.As the bearing of journals, generally use taper roller
Bearing.
Taper roll bearing has：Inner ring；Outer ring；It is maintained at multiple rollings of the cone-shaped between these inner rings and outer ring
Kinetoplast；And the state that arranges keeps the retainer of multiple rolling elements at a predetermined interval.In such taper roll bearing, lead to
Often, outer ring is configured to be freely separating with rolling element.On the other hand, in the state of after outer ring so separates, it is configured to, retainer
And be held in the rolling element of this retainer and generally remain in the state being installed to inner ring.Specifically, in the axial direction of inner ring
One end and the other end are respectively formed with flange part, and rolling element is clipped between these flange parts.Thus, retainer and holding
Rolling element in this retainer is maintained at the state being installed to inner ring.
In addition, wobble gear is configured between above-mentioned baseplate part and end plate, between them, the eccentric body of bent axle is inserted
Enter the through hole of wobble gear.It is configured with eccentric body bearing generally between eccentric body and the through hole of wobble gear.As
Eccentric body bearing, generally uses cylinder roller bearing.
Also, as disclosed in patent document 1 and patent document 2, in this geared system, there is the bias of bent axle
Body is made up of two eccentric bodies, wobble gear is provided with the situation of two.In this case, one of two eccentric bodies eccentric body
Freely it is held in one of two wobble gears gear by eccentric body bearing rotary.Another in two eccentric bodies
Eccentric body is freely held in another gear in two wobble gears by eccentric body bearing rotary.
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2013-185631 publication
Patent document 2：Japanese Unexamined Patent Publication 2014-190451 publication
Content of the invention
Problems to be solved by the invention
But, also as disclosed in patent document 1 and patent document 2, in conventional this geared system, will be from
The central axis of bent axle to the reverse-biased heart side part of the eccentric body being configured at end plate side distance and insert this eccentric body inclined
It is added distance ratio obtained from the thickness addition of heart body bearing and be configured at the through hole of end plate and the collar of bent axle
Between the rolling element of the bearing of journals most peripheral radius big.Additionally, reverse-biased heart side part be in eccentric body with eccentric sidepiece
Point, i.e. to the part of the partly contrary side protruding outside of radial direction.
Fig. 5 shows the figure of the conventional above-mentioned size relationship of geared system of explanation.In Figure 5, reference 100 table
Show tooth rest, show the state before the base portion 101 of tooth rest 100 and end plate 102 fastening.Reference 110 represents bent axle,
Bent axle 110 has two eccentric bodies 111a, 111b, and eccentric body 111b therein is configured at end plate 102 side.In eccentric body 111b
In be inserted with cylinder roller bearing 112 as eccentric body bearing.In addition, in Figure 5, with bent axle 110 in eccentric body
The collar 113b that 111b adjoins is inserted with the taper roll bearing 114b of the bearing of journals of the state after separating as outer ring.
That is, in fig. 5 it is shown that being inserted with the inner ring of taper roll bearing 114b in collar 113b and maintaining in this inner ring
Retainer and be held in this retainer rolling element state.
In Figure 5, reference Rc ' represent the central axis from bent axle 110 to the bias being configured at end plate 102 side
The cylinder roller bearing (eccentric body bearing) 112 of the distance of reverse-biased heart side part of body 111b and insertion this eccentric body 111b
Thickness is added distance obtained from being added.In addition, reference Rj ' represent the through hole and song being configured at end plate 102
The most peripheral radius of the rolling element of taper roll bearing (bearing of journals) 114b between the collar 113b of axle 110.According to figure
Can clearly be added bigger than the most peripheral radius Rj ' of rolling element apart from Rc '.
As shown in figure 5, in the structure being dimensioned such that relation, cylinder roller bearing 112 can be inserted holding
In the eccentric body 111b of bent axle 110, and the inner ring maintaining the state of the rolling element of taper roll bearing 114b etc. is inserted bent
The collar 113b of axle 110.Under this state, as shown by the arrow, make that there is the through hole inserting for eccentric body 111b
Wobble gear 120 passes through the rolling element of taper roll bearing 114b such that it is able to cylinder roller bearing 112 is inserted this swing tooth
The through hole of wheel 120.Afterwards, outer ring can be installed on the rolling element of taper roll bearing 114b.Above by being able to carry out
The assembling sequence illustrating, can efficiently be assembled.
However, this structure can obtain the advantage of assembling operation aspect, but the taper roll bearing as the bearing of journals
The size of the radial direction of 114b is restricted, and the thus load capacity increase to this bearing brings restriction.The load of the bearing of journals
For example there is the desired situations such as the situation wanting that the offset of the eccentric body making bent axle increases in capacity increase.I.e., make bent axle
Eccentric body offset increase in the case of, radial direction transmit to tooth rest from bent axle and the power increase of thrust direction.Cause
, in order to be properly maintained bent axle, there is the situation that the load capacity of the expectation bearing of journals increases in this.
That the present invention allows for above-mentioned actual conditions and makes it is therefore intended that provide can make to be configured at the axle journal of bent axle
Eccentrically swinging gear device and its manufacture method that the load capacity of the bearing of journals between portion and tooth rest increases.
For solution to problem
The present invention is a kind of Eccentrically swinging gear device, and this Eccentrically swinging gear device includes：Have in inner circumferential side
The housing of internal tooth；Rotatably it is held in the tooth rest in described housing；Rotatably it is held in the song of described tooth rest
Axle；And wobble gear, it is held in described bent axle, and has the external tooth engaging with described internal tooth, is carried out using described bent axle
Swing, described bent axle is had collar and the eccentric body adjacently being arranged with described collar, is formed with described tooth rest
For inserting the through hole of described collar, between the through hole and described collar of described tooth rest, it is configured with journal shaft
Hold, described collar is rotatably held in described tooth rest by the described bearing of journals, be formed with described wobble gear
For inserting the through hole of described eccentric body, between the through hole and described eccentric body of described wobble gear, it is configured with eccentric body
With bearing, described eccentric body is freely held in described wobble gear, described journal shaft by described eccentric body bearing rotary
The most peripheral radius ratio of the rolling element holding by the reverse-biased heart side part from the central axis of described bent axle to described eccentric body away from
Big with a distance from being added obtained from being added with the thickness of the described eccentric body bearing of this eccentric body of insertion.
According to the Eccentrically swinging gear device of the present invention, the radial dimension of the bearing of journals increases.Thereby, it is possible to make configuration
The load capacity of the bearing of journals between the collar and tooth rest of bent axle increases.
In described Eccentrically swinging gear device or, described collar with described bias side contrary
The part of side be provided with Transmission gear.
According to this structure, the bearing of journals after Transmission gear is increased by load capacity supports.Thereby, it is possible to significantly guarantee
The supporting rigidity of Transmission gear.
In addition, in described Eccentrically swinging gear device, the described bearing of journals can also be taper roll bearing.
According to this structure, taper roll bearing is from axially supporting bent axle.Thereby, it is possible to limit the shifting in the axial direction of bent axle
Dynamic.
In addition, in described Eccentrically swinging gear device or, the described bearing of journals has：It is installed on described
The inner ring of collar；It is installed on the outer ring of the through hole of described tooth rest；Including be held in described inner ring and described outer ring it
Between multiple rolling elements rolling element group, the described bearing of journals is configured to, and so that described rolling element group is loaded and unloaded from described inner ring
Separate freely.
According to this structure, in the bearing of journals, rolling element group can separate freely from inner ring handling, and therefore, assembling is suitable
The change of sequence increases.Assembleability thereby, it is possible to make this geared system improves.
In addition, in described Eccentrically swinging gear device or, the outermost of the described inner ring of the described bearing of journals
All radiuses are less than described addition distance.
In addition, the present invention is a kind of manufacture method of Eccentrically swinging gear device, this Eccentrically swinging gear device bag
Include：There is the housing of internal tooth in inner circumferential side；Rotatably it is held in the tooth rest in described housing；Rotatably it is held in
The bent axle of described tooth rest；And wobble gear, it is held in described bent axle, and has the external tooth engaging with described internal tooth, profit
Swung with described bent axle, the manufacture method of this Eccentrically swinging gear device includes following operation：By eccentric body bearing
It is installed on the operation of the eccentric body of described bent axle；The inner ring of the bearing of journals is installed on the operation of the collar of described bent axle；With
Make described inner ring be formed at the insertion in the hole of described wobble gear by by way of make described wobble gear from described collar
Laterally described eccentric body side shifting, insert the described eccentric body bearing being installed on described eccentric body in described through hole
Operation；Rolling element group and outer ring are assembled in the operation of described inner ring.
Manufacturing method according to the invention, in Eccentrically swinging gear device, even the rolling element of the bearing of journals
Most peripheral radius ratio by the distance of the reverse-biased heart side part from the central axis of bent axle to eccentric body and inserts the inclined of this eccentric body
The thickness of heart body bearing is added apart from big situation it is also possible to efficiently manufacture this geared system obtained from being added.
Thus, it is possible to the load capacity efficiently manufacturing the bearing of journals that can make to be configured between the collar of bent axle and tooth rest increases
Plus geared system.
The effect of invention
In accordance with the invention it is possible to provide a kind of bearing of journals that can make to be configured between the collar of bent axle and tooth rest
Load capacity increase Eccentrically swinging gear device.
Brief description
Fig. 1 is the sectional view of the Eccentrically swinging gear device of one embodiment of the present invention.
Fig. 2 is the figure roughly representing the bearing of journals of Eccentrically swinging gear device of Fig. 1.
Fig. 3 is the figure of the manufacture method of the Eccentrically swinging gear device that Fig. 1 is described.
Fig. 4 is the figure of the manufacture method of the Eccentrically swinging gear device that Fig. 1 is described.
Fig. 5 is the figure of the size relationship that conventional Eccentrically swinging gear device is described.
Description of reference numerals
1st, Eccentrically swinging gear device；10th, housing；12nd, internal tooth；20th, tooth rest；21st, baseplate part；23rd, base portion；24、
End plate；27th, the 1st axle journal through hole；28th, the 2nd axle journal through hole；30th, bent axle；31st, axle main body；31a, the 1st collar；
31b, the 2nd collar；32a, the 1st eccentric body；32b, the 2nd eccentric body；33rd, spur gear；36a, eccentric side part；36b, the reverse-biased heart
Side part；38a, eccentric side part；38b, reverse-biased heart side part；40th, wobble gear；40a, the 1st wobble gear；40b, the 2nd pendulum
Moving gear；42nd, external tooth；42a, the 1st external tooth；42b, the 2nd external tooth；44a, the 1st eccentric body through hole；44b, the 2nd eccentric body are used
Through hole；51st, the 1st bearing of journals；51A, inner ring；51B, outer ring；51C, rolling element；51D, retainer；51E, rolling element group；
52nd, the 2nd bearing of journals；52A, inner ring；52B, outer ring；52C, rolling element；52D, retainer；52E, rolling element group；61st, the 1st is inclined
Heart body bearing；61A, rolling element；61B, retainer；62nd, the 2nd eccentric body bearing；62A, rolling element；62B, retainer；L1、
Central axis；Rc, addition distance；Rj, the most peripheral radius of rolling element；Rir, the most peripheral radius of inner ring.
Specific embodiment
Hereinafter, with reference to the accompanying drawings of one embodiment of the present invention.
(structure of Eccentrically swinging gear device)
Eccentrically swinging gear device 1 (the hereinafter referred to as geared system 1 of the present embodiment shown in Fig. 1.) include：Including
The week side of boss has the housing 10 of internal tooth 12；Rotatably it is held in the tooth rest 20 in housing 10；Rotatably it is held in tooth
The bent axle 30 of wheel carrier 20；And wobble gear 40, it is held in bent axle 30, and has the external tooth 42 engaging with internal tooth 12, utilizes
Bent axle 30 is swung.
Housing 10 has the housing body 11 being formed as the open tubular in both ends.It is provided with the inner peripheral surface of housing body 11
Above-mentioned internal tooth 12.In figure, reference L1 represent housing body 11 central axis, specifically represent be provided with internal tooth 12
The central axis of the inner peripheral surface of housing body 11.Hereinafter, in the case of being only designated as " axial ", the direction refers in central axis
The direction extending on L1 or the direction parallel with central axis L1.In addition, the direction orthogonal with central axis L1 is referred to as radially,
Circumference will be referred to as around the direction of central axis L1.
Internal tooth 12 is formed as pin-shaped, and internal tooth 12 is embedded into and is installed on the inner circumferential being circumferentially arranged in housing body 11
Multiple cotter way 13 that the whole region in face is formed.Internal tooth 12 is joined in the way of its length direction is parallel with central axis Ll direction
Put.Internal tooth 12 is configured to, and circumferentially equally spaced arranges on the inner peripheral surface of housing body 11, with above-mentioned wobble gear 40
External tooth 42 engage.
Tooth rest 20 includes：The axle portion that there is discoideus baseplate part 21 and be provided projectingly on a face of baseplate part 21
22 base portion 23；To be connected to the discoideus end plate 24 of the state fastening on the top of the axle portion 22 of this base portion 23.Axle portion 22
It is formed with multiple with the state circumferentially arranging.End plate 24 is abutted with the top of each axle portion 22, is anchored on each axle portion 22.?
In example illustrated, end plate 24 and axle portion 22 are fastened by the bolt 25 across end plate 24 and axle portion 22.
Tooth rest 20 revolves by a pair of base bearing 26 of the outer circumferential side being configured at baseplate part 21 and the outer circumferential side of end plate 24
Turn the inner peripheral surface being freely supported on housing body 11.Thus, tooth rest 20 centered on central axis L1 with respect to housing 10
Rotation is freely.In the present embodiment, base bearing 26 is made up of angular contact ball bearing.
Bent axle 30 includes：There is the axle main body 31 of central axis；Two eccentric bodies, i.e. the 1st eccentric body 32a and the 2nd inclined
Heart body 32b；Spur gear 33 as Transmission gear.In axle main body 31, portion side (baseplate part 21 side) is formed with the 1st axle at one end
Neck 31a, is formed with the 2nd collar 31b in the other end side (end plate 24 side).
In tooth rest 20, it is formed with the 1st axle journal through hole 27 for inserting the 1st collar 31a in baseplate part 21,
It is formed with the 2nd axle journal through hole 28 for inserting the 2nd collar 31b in end plate 24.1st axle journal with through hole 27 and
2nd axle journal through hole 28 axially extends.In axle main body 31 positioned between the 1st collar 31a and the 2nd collar 31b
Part be provided with the 1st eccentric body 32a and the 2nd eccentric body 32b.
It is configured with the 1st bearing of journals 51 between the 1st axle journal through hole 27 and the 1st collar 31a.Thus, the 1st axle journal
Portion 31a is rotatably held in tooth rest 20 by the 1st bearing of journals 51.In addition, in the 2nd axle journal through hole 28 and the 2nd
It is configured with the 2nd bearing of journals 52 between collar 31b.Thus, the 2nd collar 31b is by the 2nd bearing of journals 52 rotatably
It is held in tooth rest 20.
In the present embodiment, the 1st bearing of journals 51 is configured to taper roll bearing.1st bearing of journals 51 includes：Install
Inner ring 51A in the 1st collar 31a；It is installed on the outer ring 51B of the 1st axle journal through hole 27；By be held in inner ring 51A with outer
Enclose the multiple rolling element 51C of cone-shaped between 51B and so that the state that multiple rolling element 51C arranges at a predetermined interval keeps
Rolling element group 51E that the retainer 51D of multiple rolling element 51C is constituted.
Similarly, in the present embodiment, the 2nd bearing of journals 52 is configured to taper roll bearing.2nd bearing of journals 52 wraps
Include：It is installed on the inner ring 52A of the 2nd collar 31b；It is installed on the outer ring 52B of the 2nd axle journal through hole 28；By being held in inner ring
Multiple rolling element 52C of the cone-shaped between 52A and outer ring 52B and so that what multiple rolling element 52C arranged at a predetermined interval
State keeps rolling element group 52E that the retainer 52D of multiple rolling element 52C is constituted.
Fig. 2 amplifies and roughly represents the 2nd bearing of journals 52.As shown in (A) of Fig. 2 and (B) of Fig. 2, this embodiment party
2nd bearing of journals 52 of formula is configured to, and rolling element group 52E can be made to separate freely from inner ring 52A handling.Specifically, exist
In 2nd bearing of journals 52, make outer ring 52B after the handling of rolling element group 52E separate freely, rolling element group 52E can be made
Separate freely from inner ring 52A handling.
In the present embodiment, the radial dimension (radius) of the outer peripheral face of inner ring 52A from axial one end to the other end
Portion tapers into.The end of the larger side of the radial dimension in the axial direction of inner ring 52A is formed with flange part 52F.The opposing party
Face, in the end (end of the less side of radial dimension) of the side contrary with the end of the side being formed with flange part 52F
Do not form flange part.Thereby, it is possible to make the end part of the side not forming flange part from inner ring 52A for rolling element group 52E
From.
When making rolling element group 52E separate from inner ring 52A, in rolling element group 52E, retainer 52D remains multiple rollings
The state of kinetoplast 52C is maintained.In addition, by rolling element group 52E is inserted inner ring 52A, rolling element group 52E can be assembled
In inner ring 52A.In the present embodiment, the 2nd bearing of journals 52 is configured to make rolling element group 52E load and unload certainly as described above
Separated by ground, the 1st bearing of journals 51 can also have same structure.
Return Fig. 1, be provided with the 1st back-up ring 29a in the inner peripheral surface of the 1st axle journal through hole 27.1st back-up ring 29a passes through from axle
To outside (side contrary with that side of wobble gear 40) abut with the outer ring 51B of the 1st bearing of journals 51 and limit the 1st
The movement to axial outside of the bearing of journals 51.Similarly, the inner peripheral surface in the 2nd axle journal through hole 28 is provided with the 2nd back-up ring
29b.2nd back-up ring 29b passes through from axial outside (side contrary with that side of wobble gear 40) and the 2nd bearing of journals 52
Outer ring 52B abuts and limits the movement to axial outside of the 2nd bearing of journals 52.
The 1st eccentric body 32a in bent axle 30 and the 2nd eccentric body 32b is formed with axle main body 31.1st eccentric body
32a and the 2nd eccentric body 32b state alignment axially to arrange.Wherein, the 1st eccentric body 32a and the 1st collar 31a is adjacent
Ground connection setting, the 2nd eccentric body 32b and the 2nd collar 31b is adjacently arranged.
Each eccentric body 32a, 32b are formed as discoideus (or cylindric).Each eccentric body 32a, 32b are inclined with respect to axle main body 31
The heart.Specifically, in figure, reference ac represents the central axis of axle main body 31, and reference aca represents the 1st eccentric body
The central axis of 32a, reference acb represents the central axis of the 2nd eccentric body 32b.As shown in these axis, the 1st eccentric body
The central axis acb of the central axis aca of 32a and the 2nd eccentric body 32b biases from the central axis ac of axle main body 31.On edge
In the case of the central axis ac observation of axle main body 31, the central axis aca's and the 2nd eccentric body 32b of l eccentric body 32a
Central axis acb is symmetrically configured centered on the central axis ac of axle main body 31.
Reference 36a of in figure represent in the 1st eccentric body 32a from the central axis ac of axle main body 31 towards the 1st
To the eccentric side part of outermost bias (prominent) on the direction of central axis aca of eccentric body 32a, reference 36b represents
The reverse-biased heart side part positioned at the side contrary with eccentric side part 36a in 1st eccentric body 32a.Similarly, the accompanying drawing of in figure
Mark 38a represents the central axis in central axis ac direction the 2nd eccentric body 32a from axle main body 31 in the 2nd eccentric body 32b
To the eccentric side part of outermost bias (prominent) on the direction of acb, reference 38b represents the position in the 2nd eccentric body 32b
Reverse-biased heart side part in the side contrary with eccentric side part 38a.Each eccentric body 32a, 32b insertion is formed on wobble gear
40 through hole, thus, keeps wobble gear 40.Its detailed content is subsequently discussed.
In addition, the 2nd collar 31b of axle main body 31 via the 2nd bearing of journals 52 from end plate 24 direction of tooth rest 20
Axial is protruding outside.The part projecting from end plate 24 in the 2nd collar 31b is fixed with above-mentioned spur gear 33.
I.e., spur gear 33 is located at the part of the 2nd collar 31b side contrary with the 2nd eccentric body 32b side.From input (not shown)
Gear transmits rotation to spur gear 33, thus, so that bent axle 30 is rotated.
Additionally, in the present embodiment, in tooth rest 20, it is formed with three the 1st axle journal through holes 27 and three the 2nd
Axle journal through hole 28, three bent axles 30 are rotatably held in tooth rest 20.Thus, with regard to the 1st bearing of journals the 51, the 2nd
The bearing of journals 52 and spur gear 33, are also respectively equipped with three.
Then, wobble gear 40 is made up of the 1st wobble gear 40a and the 2nd wobble gear 40b.Each wobble gear 40a, 40b
Axially arrange, be configured in the space being formed between the baseplate part 21 of tooth rest 20 and end plate 24.1st swing tooth
Wheel 40a is configured at baseplate part 21 side, and the 2nd wobble gear 40b is configured at end plate 24 side.
It is formed with the 1st external tooth 42a in external tooth 42 in the peripheral part of the 1st wobble gear 40a.The 2nd wobble gear 40b's
Peripheral part is formed with the 2nd external tooth 42b in external tooth 42.The internal tooth of the gear ratio housing 10 of the 1st external tooth 42a and the 2nd external tooth 42b
12 number of teeth is few (for example, few one).Thus, by the eccentric rotary of eccentric body 32a, 32b, wobble gear 40a, 40b
So that its external tooth 42 is engaged with internal tooth 12, while carrying out swing rotary with respect to housing 10.
In the present embodiment, it is formed with three of the 1st eccentric body 32a for inserting bent axle 30 in the 1st wobble gear 40a
Individual 1st eccentric body through hole 44a and the 1st axle portion through hole 45a for inserting the axle portion 22 of tooth rest 20.In the 2nd pendulum
Moving gear 40b is formed with three the 2nd eccentric body through hole 44b of the 2nd eccentric body 32b for inserting bent axle 30 and is used for inserting
Enter the 2nd axle portion through hole 45b of the axle portion 22 of tooth rest 20.
It is configured with the 1st eccentric body bearing 61 between the 1st eccentric body through hole 44a and the 1st eccentric body 32a.Thus,
1st eccentric body 32a is rotatably held in the 1st wobble gear 40a by the 1st eccentric body bearing 61.In addition, it is inclined the 2nd
It is configured with the 2nd eccentric body bearing 62, the 2nd eccentric body 32b is by the 2nd between heart body through hole 44b and the 2nd eccentric body 32b
Eccentric body bearing 62 is rotatably held in the 2nd wobble gear 40b.
In the present embodiment, the 1st eccentric body bearing 61 is configured to cylinder roller bearing (needle bearing).In detail and
Speech, in this embodiment, the 1st eccentric body bearing 61 is by columned multiple rolling element 61A and the holding keeping multiple rolling element 61A
Device 61B is constituted.Thus, the 1st eccentric body bearing 61 be configured at the 1st eccentric body through hole 44a and the 1st eccentric body 32a it
Between in the state of, each rolling element 61A with the 1st eccentric body through hole 44a close to or abut and close with the 1st eccentric body 32a
Or abut.
Similarly, in the present embodiment, the 2nd eccentric body bearing 62 is configured to cylinder roller bearing (needle bearing).
And, in this embodiment, the 2nd eccentric body bearing 62 is also by the columned multiple rolling element 62A's and multiple rolling element 62A of holding
Retainer 62B is constituted.Thus, it is configured at the 2nd eccentric body through hole 44b and the 2nd eccentric body in the 2nd eccentric body bearing 62
In the state of between 32b, each rolling element 62A with the 2nd eccentric body through hole 44b close to or abut and with the 2nd eccentric body
32b is close or abuts.
Here, in FIG, reference Rc represents will be anti-to the 2nd eccentric body 32b for the central axis (ac) from bent axle 30
Obtained from the distance of eccentric side part 38b is added with the thickness of the 2nd eccentric body bearing 62 of insertion this eccentric body 32b
It is added distance.In addition, reference Rj represents the rolling element of the 2nd bearing of journals 52 of the 2nd collar 31b of insertion bent axle 30
The most peripheral radius (maximum whirling radius) of 52C.In the present embodiment, rolling element 52C be formed as cone-shaped so as in
Heart axis tilts with respect to the central axis of the 2nd bearing of journals 52.And, the end of the side becoming big footpath of rolling element 52C
Outer peripheral edge radially stretching out to outermost in the central axis with respect to the 2nd bearing of journals 52.Most peripheral radius Rj refers to
Distance from the outer peripheral edge of the end of the side becoming big footpath to rolling element 52C for the central axis of the 2nd bearing of journals 52.
From fig. 1, it can be seen that in the present embodiment, the most peripheral radius Rj of the rolling element 52C of the 2nd bearing of journals 52 is more than phase
Plus apart from Rc.In addition, reference Rir of in figure represents the most peripheral radius of the inner ring 52A of the 2nd bearing of journals 52.This inner ring
The most peripheral radius Rir of 52A is less than described addition apart from Rc.Additionally, in the present embodiment, the rolling of the 1st bearing of journals 51
The most peripheral radius of body 51C also than by reverse-biased heart side part 36b from the central axis of bent axle 30 to the 1st eccentric body 32a away from
Big with a distance from being added obtained from being added with the thickness of the 1st eccentric body bearing 61 of insertion this eccentric body 32a.
In the geared system 1 with above structure, if the torque from motor (not shown) etc. passes to spur gear 33
Pass, then bent axle 30 rotates.Now, the 1st eccentric body 32a and the 2nd eccentric body 32b of bent axle 30 carries out eccentric rotary respectively.If
Eccentric body 32a, 32b carry out eccentric rotary, then each wobble gear 40a, 40b are circled round centered on the central axis of tooth rest 20
(revolution).Now, wobble gear 40a, 40b makes its external tooth 42 engage with respect to housing with the internal tooth 12 of housing 10
10 rotations.As a result, the tooth rest 20 supporting wobble gear 40a, 40b by bent axle 30 rotates with respect to housing 10.
Such geared system 1 can be used for rotating part, the various machines such as revolving body, the shoulder joint of robot as decelerator
Rotating part of bed etc..As a concrete example, by housing 10 being fixed on the pedestal of robot, make tooth rest 20 and robot
Revolving body links, and revolving body can be made to rotate with respect to pedestal with high torque (HT) and accurately control the rotation of this revolving body.
(manufacture method of Eccentrically swinging gear device)
Then, with reference to the manufacture method of the above-mentioned geared system 1 of Fig. 3 and Fig. 4 explanation.
In the manufacture method of the geared system 1 of present embodiment, first, as shown in figure 3, being assembled, until bent axle
30 stand up the state on the base portion 23 being placed in the scope of operation.Now, first, with the baseplate part of the base portion 23 of tooth rest 20
Base portion 23 is placed in the scope of operation 21 modes being connected to the scope of operation.1st back-up ring 29a uses located at the 1st axle journal of baseplate part 21
The inner peripheral surface of through hole 27.
Next, the 1st eccentric body bearing 61 insert and be installed on state detached with base portion 23 bent axle 30 the 1st inclined
Heart body 32a, the 2nd eccentric body bearing 62 inserts and is installed on the 2nd eccentric body 32b.And, wherein, in the 1st wobble gear 40a
The 1st eccentric body with inserting the 1st eccentric body bearing 61 in through hole 45a, the 1st wobble gear 40a is held in bent axle 30.
Next, the 1st bearing of journals 51 inserts and is installed on the 1st collar 31a of bent axle 30.1st bearing of journals 51 with
State after inner ring 51A, outer ring 51B and the integration of rolling element group 51E is installed on the 1st collar 31a.In addition, the only the 2nd axle journal
The inner ring 52A of bearing 52 inserts and is installed on the 2nd collar 31b of bent axle 30.
Next, the 1st bearing of journals 51 being held in bent axle 30 inserts the 1st axle journal through hole 27 of baseplate part 21, its
Outer ring 51B is pressed into the state abutting with the 1st back-up ring 29a.Thus, it is placed into the state shown in Fig. 3.
Next, as shown in Figure 3 and 4, the 2nd wobble gear is being formed at the inner ring 52A of the 2nd bearing of journals 52
In the 2nd eccentric body through hole 44b of 40b by by way of make the 2nd wobble gear 40b lateral 2nd inclined from the 2nd collar 31b
Heart body 32b side shifting, insertion in the 2nd eccentric body through hole 44b is installed to the 2nd eccentric body axle of the 2nd eccentric body 32b
Hold 62.
Afterwards, as shown in figure 4, rolling element group 52E is assembled in the inner ring 52A of the 2nd bearing of journals 52, and outer ring 52B group
It is loaded on rolling element group 52E.In the example in the figures, the outer ring 52B of the 2nd bearing of journals 52 becomes and is inserted into the 2nd of end plate 24
The axle journal state of through hole 28.Thus, outer ring 52B is assembled in rolling element group 52E with the state being held in end plate 24.It
Afterwards, by using bolt 25, the axle portion 22 of end plate 24 and base portion 23 is fastened, assembling operation completes.Thus, produce gear
Device 1.
(effect)
The most peripheral of the rolling element 52C of geared system the 1, the 2nd bearing of journals 52 of present embodiment from the description above
Radius Rj than by the distance of reverse-biased heart side part 38b from the central axis of bent axle 30 to the 2nd eccentric body 32b and insert this bias
It is added big apart from Rc obtained from the thickness addition of the 2nd eccentric body bearing 62 of body 32b.According to this structure, the 2nd axle journal
The radial dimension of bearing 52 increases.Additionally, the 1st bearing of journals 51 is also same.Thereby, it is possible to make to be configured at the axle of bent axle 30
The load capacity of the bearing of journals 51,52 between neck 31a, 31b and tooth rest 20 increases.
In addition, the side with the 2nd eccentric body 32b of the 2nd collar 31b in the bent axle 30 of insertion the 2nd bearing of journals 52
The part of contrary side is provided with the spur gear 33 as Transmission gear.Thus, the 2nd after spur gear 33 is increased by load capacity
The bearing of journals 52 supports, therefore, it is possible to significantly guarantee the supporting rigidity of spur gear 33.
In addition, the bearing of journals 51,52 is taper roll bearing, therefore, they are from axially supporting bent axle 30.Thereby, it is possible to
Limit the movement in the axial direction of bent axle 30.
In addition, the 2nd bearing of journals 52 includes：It is installed on the inner ring 52A of the 2nd collar 31b；It is installed on the of tooth rest 20
The 2 axle journals outer ring 52B of through hole 28；Rolling including the multiple rolling element 52C being held between inner ring 52A and outer ring 52B
Body group 52E, the 2nd bearing of journals 52 is configured to make rolling element group 52E separate freely from inner ring 52A handling.Accordingly, pass through
The change of assembling increases such that it is able to improve the assembleability of geared system 1.
In addition, in the manufacture method of present embodiment, as described above, carry out following operation：By the 2nd eccentric body bearing
The operation of 62 the 2nd eccentric body 32b being arranged on bent axle 30；The inner ring 52A of the 2nd bearing of journals 52 is arranged on the 2nd of bent axle 30
The operation of collar 31b；Passed through in the 2nd eccentric body through hole 44b being formed at the 2nd wobble gear 40b with inner ring 52A
Mode makes the 2nd wobble gear 40b from the lateral 2nd eccentric body 32b side shifting of the 2nd collar 31b, in the 2nd eccentric body through hole
Insertion the 2nd eccentric body operation of bearing 62 in 44b；Rolling element group 52E and outer ring 52B are assembled in the operation of inner ring 52A.
According to such manufacture method, even as the geared system 1 of present embodiment the 2nd bearing of journals 52 rolling
The most peripheral radius Rj of kinetoplast 52C is than by reverse-biased heart side part 38b from the central axis of bent axle 30 to the 2nd eccentric body 32b
Distance with insertion this eccentric body 32b the 2nd eccentric body bearing 62 thickness be added obtained from be added big apart from Rc
Situation is it is also possible to efficiently manufacture this geared system 1.
I.e., the most peripheral radius Rj in the rolling element 52C of the 2nd bearing of journals 52 is more than the situation being added the structure apart from Rc
Under, it is also contemplated that following assembling sequence：On bent axle 30, the 2nd wobble gear 40b be installed to the 2nd eccentric body bearing 62 it
Afterwards, the 2nd bearing of journals 52 is installed on the 2nd collar 31b of bent axle 30, afterwards, in the 2nd axle journal through hole 28 of end plate 24
Middle insertion the 2nd bearing of journals 52.However, such assembling sequence compares cost labour and time.Suitable with respect to such assembling
Sequence, in the manufacture method of present embodiment, carries out following operation：It is being formed at the 2nd of the 2nd wobble gear 40b with inner ring 52A
In eccentric body through hole 44b by by way of make the 2nd wobble gear 40b from the lateral 2nd eccentric body 32b side of the 2nd collar 31b
Mobile, in the 2nd eccentric body with inserting the 2nd eccentric body bearing 62 in through hole 44b.Thereby, it is possible to simplify assembling sequence, because
This, can efficiently carry out the manufacture of geared system 1.Thus, it is possible to efficiently manufacture make the load of the bearing of journals 51,52
The geared system 1 that capacity increases.
In addition, in the present embodiment, the most peripheral radius Rir of the inner ring 52A of the 2nd bearing of journals 52 is less than and is added distance
Rc.Hereby it is possible to effectively carry out with inner ring 52A in the 2nd eccentric body through hole 44b being formed at the 2nd wobble gear 40b
By by way of make the 2nd wobble gear 40b from the operation of the lateral 2nd eccentric body 32b side shifting of the 2nd collar 31b.Accordingly, it is capable to
Enough successfully carry out assembling operation.
This concludes the description of one embodiment of the present invention, but the present invention is not limited to above-mentioned embodiment.For example,
In the above-described embodiment, the example being provided with three bent axles 30 to geared system 1 is illustrated, but the number of bent axle 30 does not have
It is particularly limited to.
In addition, for example, in the above-described embodiment, the footpath in the 2nd bearing of journals 52, in the axial direction of inner ring 52A
It is formed with flange part 52F, the end with the side being formed with flange part 52F of inner ring 51A to the end of larger-size side
The end (end of the less side of radial dimension) of contrary side does not form flange part.Thereby, it is possible to from inner ring 52A's
The end not forming the side of flange part makes rolling element group 52E separate.It may, however, also be, at the end of the axial direction of inner ring 52A
Two sides in portion are formed with flange part, make the flange part deformation of the end of the less side of radial dimension of inner ring 52A, thus roll
Body group 52E can separate from inner ring 52A.
Claims (6)
1. a kind of Eccentrically swinging gear device, it includes：
There is the housing of internal tooth in inner circumferential side；
Rotatably it is held in the tooth rest in described housing；
Rotatably it is held in the bent axle of described tooth rest；And
Wobble gear, it is held in described bent axle, and has the external tooth engaging with described internal tooth, is put using described bent axle
It is dynamic,
Described bent axle has collar and the eccentric body adjacently arranging with described collar,
It is formed with the through hole for inserting described collar in described tooth rest,
It is configured with the bearing of journals between the through hole and described collar of described tooth rest,
Described collar is rotatably held in described tooth rest by the described bearing of journals,
It is formed with the through hole for inserting described eccentric body in described wobble gear,
It is configured with eccentric body bearing between the through hole and described eccentric body of described wobble gear,
Described eccentric body is freely held in described wobble gear by described eccentric body bearing rotary,
The most peripheral radius ratio of the rolling element of the described bearing of journals will be anti-to described eccentric body for the central axis from described bent axle
The distance of eccentric side part with insert this eccentric body described eccentric body bearing thickness be added obtained from be added away from
From big.
2. Eccentrically swinging gear device according to claim 1, wherein,
Part in the described collar side contrary with the side of described eccentric body is provided with Transmission gear.
3. Eccentrically swinging gear device according to claim 1 and 2, wherein,
The described bearing of journals is taper roll bearing.
4. Eccentrically swinging gear device according to claim 3, wherein,
The described bearing of journals has：It is installed on the inner ring of described collar；It is installed on the outer ring of the through hole of described tooth rest；Bag
Include the rolling element group of the multiple rolling elements being held between described inner ring and described outer ring, the described bearing of journals is configured to, can
Described rolling element group is made to separate freely from the handling of described inner ring.
5. Eccentrically swinging gear device according to claim 4, wherein,
The most peripheral radius of the described inner ring of the described bearing of journals is less than described addition distance.
6. a kind of manufacture method of Eccentrically swinging gear device, this Eccentrically swinging gear device includes：Have in inner circumferential side
The housing of internal tooth；Rotatably it is held in the tooth rest in described housing；Rotatably it is held in the song of described tooth rest
Axle；Wobble gear, it is held in described bent axle, and has the external tooth engaging with described internal tooth, is swung using described bent axle,
The manufacture method of this Eccentrically swinging gear device includes following operation：
Eccentric body bearing is installed on the operation of the eccentric body of described bent axle；
The inner ring of the bearing of journals is installed on the operation of the collar of described bent axle；
By described inner ring be formed at the insertion in the hole of described wobble gear by the way of make described wobble gear from described axle
Neck laterally described eccentric body side shifting, insert the described eccentric body axle being installed on described eccentric body in described through hole
The operation held；
And rolling element group and outer ring are assembled in the operation of described inner ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-152584 | 2015-07-31 | ||
| JP2015152584A JP6629000B2 (en) | 2015-07-31 | 2015-07-31 | Eccentric oscillating gear device and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402282A true CN106402282A (en) | 2017-02-15 |
| CN106402282B CN106402282B (en) | 2020-10-30 |
Family
ID=57795948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610615632.8A Active CN106402282B (en) | 2015-07-31 | 2016-07-28 | Eccentric oscillating gear device and method for manufacturing same |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6629000B2 (en) |
| KR (1) | KR20170015193A (en) |
| CN (1) | CN106402282B (en) |
| DE (1) | DE102016213887A1 (en) |
| TW (1) | TWI698599B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027191A (en) * | 2018-09-25 | 2018-12-18 | 山东帅克机械制造股份有限公司 | A kind of assembly technology of the hollow high-accuracy reducer arrangement of integration |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021067317A (en) | 2019-10-23 | 2021-04-30 | ナブテスコ株式会社 | Speed reducer |
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| CN1266957A (en) * | 1999-03-16 | 2000-09-20 | 住友重机械工业株式会社 | Driving device |
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| CN103591120A (en) * | 2010-02-03 | 2014-02-19 | 住友重机械工业株式会社 | Eccentrically oscillating reduction gear, and method for manufacturing eccentric body shaft |
| CN104074928A (en) * | 2013-03-27 | 2014-10-01 | 住友重机械工业株式会社 | Deceleration device provided with eccentric swinging type deceleration mechanism |
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| JPS6058951U (en) * | 1983-09-29 | 1985-04-24 | 株式会社ナブコ | Reduction gear for driving crawler vehicles |
| JP2866245B2 (en) * | 1992-03-25 | 1999-03-08 | 住友重機械工業株式会社 | Series of internal meshing planetary gear structure |
| JP2002195273A (en) * | 2000-12-27 | 2002-07-10 | Nsk Ltd | Bearing unit |
| JP2013185631A (en) | 2012-03-07 | 2013-09-19 | Nabtesco Corp | Eccentric swing gear device |
| JP6058951B2 (en) | 2012-09-06 | 2017-01-11 | 日立マクセル株式会社 | Flat battery |
| JP2014190352A (en) * | 2013-03-26 | 2014-10-06 | Nakanishi Metal Works Co Ltd | Taper roller bearing |
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2015
- 2015-07-31 JP JP2015152584A patent/JP6629000B2/en active Active
-
2016
- 2016-07-27 KR KR1020160095195A patent/KR20170015193A/en not_active Application Discontinuation
- 2016-07-28 CN CN201610615632.8A patent/CN106402282B/en active Active
- 2016-07-28 DE DE102016213887.1A patent/DE102016213887A1/en active Pending
- 2016-07-28 TW TW105123939A patent/TWI698599B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1266957A (en) * | 1999-03-16 | 2000-09-20 | 住友重机械工业株式会社 | Driving device |
| CN101263319A (en) * | 2005-09-13 | 2008-09-10 | 纳博特斯克株式会社 | Eccentrically rocking type reduction gear |
| CN101517264A (en) * | 2006-09-25 | 2009-08-26 | 纳博特斯克株式会社 | Eccentric oscillating reduction gear and stabilizer shaft rotating device using eccentric oscillating reduction gear |
| CN103591120A (en) * | 2010-02-03 | 2014-02-19 | 住友重机械工业株式会社 | Eccentrically oscillating reduction gear, and method for manufacturing eccentric body shaft |
| CN104074928A (en) * | 2013-03-27 | 2014-10-01 | 住友重机械工业株式会社 | Deceleration device provided with eccentric swinging type deceleration mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027191A (en) * | 2018-09-25 | 2018-12-18 | 山东帅克机械制造股份有限公司 | A kind of assembly technology of the hollow high-accuracy reducer arrangement of integration |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017032068A (en) | 2017-02-09 |
| JP6629000B2 (en) | 2020-01-15 |
| KR20170015193A (en) | 2017-02-08 |
| TW201708737A (en) | 2017-03-01 |
| TWI698599B (en) | 2020-07-11 |
| CN106402282B (en) | 2020-10-30 |
| DE102016213887A1 (en) | 2017-02-02 |
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