CN105673777B - The series of deceleration device - Google Patents
The series of deceleration device Download PDFInfo
- Publication number
- CN105673777B CN105673777B CN201510505487.3A CN201510505487A CN105673777B CN 105673777 B CN105673777 B CN 105673777B CN 201510505487 A CN201510505487 A CN 201510505487A CN 105673777 B CN105673777 B CN 105673777B
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- Prior art keywords
- deceleration device
- external gear
- base bearing
- wheel carrier
- shell
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Classifications
-
- 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
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- General Details Of Gearings (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The present invention provides a kind of series of deceleration device, and project is in the two deceleration devices of the deceleration device with base bearing and the deceleration device without base bearing, can be with the axial movement of low cost limitation external gear.The deceleration device has external gear, includes the 1st deceleration device with the internal gear of external gear internal messing, the shell equipped with internal gear and the wheel carrier relative to shell rotation, the series of the deceleration device, and base bearing is configured between shell and wheel carrier；And the 2nd deceleration device, do not configure base bearing, the wheel carrier of the wheel carrier and the 2nd deceleration device of 1st deceleration device is general, in the 1st deceleration device, inner ring by being configured at the base bearing of the base bearing configuration section of wheel carrier limits the axial movement of external gear, in the 2nd deceleration device, the axial movement of external gear is limited by being configured at the movement restricting member of base bearing configuration section of wheel carrier.
Description
This application claims the priority based on Japanese patent application filed on December 9th, 2014 the 2014-249404th.
The entire content of this Japanese application is incorporated by reference in this manual.
Technical field
The present invention relates to a kind of series of deceleration device.
Background technique
A kind of deceleration device is disclosed in patent document 1, which has: external gear and the external gear internal messing
Internal gear, the shell equipped with the internal gear, relative to the shell rotation wheel carrier.
In the deceleration device, the bearing of large capacity of the wheel carrier by being referred to as base bearing and, is supported in shell.Also, the master
The axial movement of the inner ring limitation external gear of bearing.
Patent document 1: Japanese Unexamined Patent Publication 2010-286098 bulletin (Fig. 1)
Deceleration device is assembled in various industrial machines etc. and uses, but according to the purposes of the industrial machine etc., sometimes
Base bearing of the very big torque from sides such as the industrial machines towards deceleration device is had for some reason reversely to input.
Will in the method for the capacity of further expansion base bearing come there are certain limits when coping with this high-torque, and at
This can rise.It is therefore proposed that having the bigger Bearning mechanism by being set to the sides such as industrial machine to bear this torque
Structure.As rear enumeration finally can omit the configuration of base bearing in deceleration device side according to this structure.
However, on the other hand, in the case where deceleration device does not have this base bearing, how to limit the axial direction of external gear
Movement will become problem.
Summary of the invention
The present invention is to solve the problems, such as this and complete, and project is in the deceleration device with base bearing and does not have
Have in the two deceleration devices of the deceleration device of base bearing, it can be with the axial movement of low cost limitation external gear.
The present invention solves the above subject such as flowering structure by being set as: in a kind of series of deceleration device, the deceleration dress
It sets and has external gear, with the internal gear of the external gear internal messing, the shell equipped with the internal gear and relative to shell rotation
Wheel carrier, the series of the deceleration device include the 1st deceleration device, and base bearing is configured between the shell and the wheel carrier；
And the 2nd deceleration device, without configuration base bearing, the wheel of the 1st deceleration device between the shell and the wheel carrier
The wheel carrier of frame and the 2nd deceleration device is general, in the 1st deceleration device, by the master for being configured at the wheel carrier
The inner ring of the base bearing in Bearing configuration portion limits the axial movement of the external gear, in the 2nd deceleration device, by matching
The movement restricting member of the base bearing configuration section of the wheel carrier is placed in limit the axial movement of the external gear.
In the present invention, in the 1st deceleration device with base bearing, external gear is limited by the inner ring of the base bearing
Axial movement.In the 2nd deceleration device for not having base bearing, the space of the configuration base bearing in the 1st deceleration device is utilized.
That is, configuring movement restricting member in base bearing configuration section, and the axial of external gear is limited by the movement restricting member and is moved
It is dynamic.
It, can will be at as a result, in the 1st deceleration device with base bearing and the 2nd deceleration device without base bearing
This higher wheel carrier generalization, and can also limit the axial of external gear in the 2nd deceleration device for not having base bearing and move
It is dynamic.
Invention effect
According to the present invention, slow down in the two of the deceleration device with base bearing and the deceleration device without base bearing
It, can be with the axial movement of low cost limitation external gear in device.
Detailed description of the invention
Fig. 1 (A) is the 1st deceleration dress in the series for indicate deceleration device involved in an example of embodiments of the present invention
The cross-sectional view set, Fig. 1 (B) are the cross-sectional view of the 2nd deceleration device in the series for indicate deceleration device.
Fig. 2 is the enlarged cross-sectional view of the major part of the 1st deceleration device in above-mentioned series.
Fig. 3 is the enlarged cross-sectional view of the major part of the 2nd deceleration device in above-mentioned series.
Fig. 4 is to indicate that the 2nd deceleration device is installed on the cross-sectional view of the structural example of the state of object machinery.
Fig. 5 is the enlarged cross-sectional view with the major part for being equivalent to Fig. 3 for the variation for indicating above-mentioned 2nd deceleration device.
In figure: 100,200- 1st deceleration device, 2nd deceleration device, 124,224- external gear, 126,226- internal gear,
132,232- wheel carrier, 132B, 232B- base bearing configuration section, 144,244- shell, 150- base bearing, 280- movement restricting member.
Specific embodiment
Hereinafter, an example of embodiments of the present invention is described in detail with reference to the accompanying drawings.
The series of the deceleration device includes shown in the 1st deceleration device (the 1st deceleration device) and Fig. 1 (B) shown in Fig. 1 (A)
The 2nd deceleration device (the 2nd deceleration device).The deceleration device for belonging to series is provided with external gear, with the external gear internal messing
Internal gear, the shell equipped with the internal gear and the wheel carrier relative to shell rotation.But in the 1st deceleration device, outside the 1st
Bearing configured with the large capacity for being referred to as base bearing between shell and the 1st wheel carrier, but in the 2nd deceleration device, in the 2nd shell and the
Without configuration base bearing between 2 wheel carriers.
With reference to Fig. 1 (A) and Fig. 1 (B), since the 1st deceleration device 100, the 2nd deceleration device 200 outline structure carry out
Explanation.In addition, Fig. 2, Fig. 3 are respectively the enlarged cross-sectional view of the major part of Fig. 1 (A), Fig. 1 (B).
In addition, in the following description, to the symbol of 100 series of component parts mark of the 1st deceleration device 100, to the 2nd
The symbol of 200 series of component parts mark of deceleration device 200, for convenience, using the 1st deceleration device 100 to general
Part is illustrated, and suitably illustrates the 1st deceleration device 100 and the distinctive structure of the 2nd deceleration device 200.Two-phase bit digital afterwards
Identical constitutive requirements are (consistent: shape and size are identical) general in the 1st deceleration device 100 and the 2nd deceleration device 200
Constitutive requirements.
Also, in the 1st deceleration device 100 and the 2nd deceleration device 200, relative to 2 external gear 124x, 124y the (the 2nd
Be 224x, 224y in deceleration device 200) axial center boundary face F100 (be F200 in the 2nd deceleration device 200), axial direction
Load-side and load reverse side are respectively provided with similar structure.Therefore, suffix is marked on the component of axial load side in attached drawing
Symbol for x marks the symbol that suffix is y on the component in load reverse side, and for convenience's sake, after being omitted
The symbol sewed is illustrated common segment, and suitably illustrates the relationship between load-side and load reverse side.
It is illustrated since the structure of the 1st deceleration device 100.
1st deceleration device 100 has input pinion gear (such as the setting of Fig. 4 illustrated not in Fig. 1 (A) and Fig. 1 (B)
Input pinion gear 214 etc. in the front end of connecting shaft 212).Input pinion gear simultaneously be configured at circumferencial direction 3 at 3
Distribution gear (only illustrating 1) 116 engages.Distribution gear 116, which is individually fixed in 3 eccentric shafts via spline 119, (only schemes
Show 1) 118.
From the position that the axle center C126 of internal gear 126 is deviated, it is circumferentially equipped with 3 eccentric shafts 118 at equal intervals.It is each inclined
2 eccentric bodies 120 (120x, 120y) are formed on heart body axis 118.Axle center of the eccentric body 120 relative to eccentric shaft 118
C118 is with the phase difference bias δ E (δ Ex, δ Ey) of 180 degree.It is embedding via needle bearing 122 (122x, 122y) on each eccentric body 120
Conjunction has 2 external gears 124 (124x, 124y).External gear 124 and 126 internal messing of internal gear.
Internal gear 126 by with the integrated internal tooth wheel body 126A of shell 144 and be rotatably freely supported on the internal gear
Main body 126A and constitute the internal gear 126 internal tooth export trade 126B constitute.The internal tooth number of internal gear 126 be (export trade 126B's
Radical) (only having more 1 in the example) slightly more than the number of teeth of the external tooth of external gear 124.
A pair of of wheel carrier 132 (132x, 132y) is configured in the axial sides portion of external gear 124.The wheel carrier of load reverse side
132y is via the wheel carrier 132x from load-side integrally wheel carrier pin 136 and bolt 138 outstanding and the wheel carrier 132x with load-side
Integration.
Be formed on wheel carrier 132 3 eccentric body axis holes (only showing 1 in Fig. 1 (A) and Fig. 1 (B)) 132P (132Px,
132Py).Eccentric shaft 118 is inserted in eccentric body axis hole 132P via a pair of of tapered roller bearing 140 (140x, 140y), and
It is supported on wheel carrier 132 in a way freely spinning way.
Configured with a pair of of base bearing 150 (150x, 150y) between the shell 144 and wheel carrier 132 of 1st deceleration device 100.I.e.
Wheel carrier 132 is supported on shell 144 via base bearing 150.
In the example, base bearing 150 is made of tapered roller bearing, and has outer ring 151 (151x, 151y), circle respectively
Bore roller (rolling element) 152 (152x, 152y) and inner ring 153 (153x, 153y).
More specifically, the periphery of wheel carrier 132 includes the large-diameter portion for being set to the side opposite with external gear in the axial direction
132A(132Ax,132Ay)；And it is set to base bearing configuration section (the more specifically inner ring configuration of external gear side in the axial direction
Portion) 132B (132Bx, 132By).The outside diameter d 132B of base bearing configuration section 132B is less than the outside diameter d 132A of large-diameter portion 132A,
Inner ring bearing surface 132C (132Cx, 132Cy) is equipped between large-diameter portion 132A and base bearing configuration section 132B.Inner ring bearing surface
132C with axis plane at right angle by constituting.
The inner ring 153 of base bearing 150 is configured at the base bearing configuration section 132B of wheel carrier 132, and in wheel carrier 132
Bearing surface 132C is enclosed to abut.In addition, the inner ring 153x of load-side is directly abutted with inner ring bearing surface 132Cx in present embodiment,
But the inner ring 153y of load reverse side is then abutted with inner ring bearing surface 132Cy via gasket 171 indirectly.
The gasket 171 is used to adjust the preload of the base bearing 150y of load reverse side and the base bearing 150x of load-side.
In this way, the inner ring 153 of base bearing 150 can be abutted directly with the inner ring bearing surface 132C of wheel carrier 132, it can also be via gasket
171 or liner etc. abut indirectly.
In addition, the large-diameter portion 132Ax of the wheel carrier 132x of load-side constitutes the sealing surface of oil sealing 170.
The inner ring 153 of base bearing 150 crosses the base bearing configuration section 132B of wheel carrier 132 and gear side outside in the axial direction is prolonged
It stretches, the axial end face 124E of the end face 153A (153Ax, 153Ay) of the external gear side in axial direction and external gear 124 (124Ex,
124Ey) abut.In other words, the axial length L 153 of the inner ring 153 of base bearing 150 is set as the inner ring bearing surface with wheel carrier 132
Axial length between 132C and the axial end face 124E of external gear 124 is corresponding (when being put into gasket 171, correspondingly slightly to contract
It is short).
According to this structure, the axial movement of external gear 124 can be limited by the inner ring 153 of base bearing 150.More specifically
For, external gear 124x can be limited by the inner ring 153x of the base bearing 150x of load-side in the axial direction to load sidesway
It is dynamic, and external gear 124y is limited in the axial direction to load reverse side by the inner ring 153y of the base bearing 150y of load reverse side
It is mobile.
In addition, in the embodiment, shell 144, which includes, to be set to if the outer ring 151 to base bearing 150 is illustrated
The export trade configuration section 144A in the axial center of inner circumferential；And it is set to the base bearing configuration section of the two sides of export trade configuration section 144A
(more specifically outer ring configuration section) 144B (144Bx, 144By).The axial length L 144A of export trade configuration section 144A and export trade
The axial length L 126B of 126B is equal.The internal diameter of export trade configuration section 144A is (not formed for configuring the part of the slot of export trade 126B
Internal diameter) D144A be less than base bearing configuration section 144B internal diameter D144B, in export trade configuration section 144A and base bearing configuration section
Outer ring bearing surface 144F (144Fx, 144Fy) is equipped between 144B.Outer ring bearing surface 144F with axis plane at right angle by constituting.
Moreover, the outer ring 151 of base bearing 150 is configured at the base bearing configuration section 144B of shell 144, and and shell
144 outer ring bearing surface 144F is abutted.In present embodiment, by using the structure, limited by the outer ring 151 of base bearing 150
The axial movement of export trade 126B processed.Specifically, limiting export trade 126B by the outer ring 151x of the base bearing 150x of load-side
It is mobile to load-side in the axial direction, export trade 126B is limited in axial direction by the outer ring 151y of the base bearing 150y of load reverse side
On it is mobile to load reverse side.
In addition, the load-side in the axial direction of the base bearing configuration section 144Bx of load-side is also extended with for configuring oil sealing
170 oil sealing configuration section 144D.But the load reverse side in the axial direction of the base bearing configuration section 144By of load reverse side
But that oil sealing configuration section is not especially arranged.This is because negative in the axial direction of the base bearing configuration section 144By of load reverse side
It carries opposite side and is linked with other shells (not shown), and have the space in other shells continuous.
In addition, being formed with circlip groove 144J on the base bearing configuration section 144B (144Bx, 144By) of shell 144
(144Jx,144Jy).In the 1st deceleration device 100, circlip groove 144J will not be specially utilized.Circlip groove 144J be for
By the unitized structure of shell 244 of the shell 144 of the 1st deceleration device 100 and the 2nd deceleration device 200.In this regard, carrying out later
Explanation.
Here, the effect of the 1st deceleration device 100 is briefly described.
In addition, the basic decelerating effect as deceleration device, no matter the 1st deceleration device 100 or the 2nd deceleration device
200 is essentially identical.
If input pinion gear (not shown) is (for example, as shown in Figure 4 is set to connecting shaft 112 in Fig. 1 (A) and Fig. 1 (B)
(212) the input pinion gear 114 (214) of front end) rotation, then 3 distribution gears 116 rotate simultaneously, and 3 eccentric shafts
118 is synchronous to same direction rotation.Be assembled in as a result, 124 one side of external gear of the periphery of eccentric body 120 and internal gear 126 (
Export trade 126B) internal messing swings on one side.As a result, each eccentric shaft 118 every rotation 1 time, external gear 124 is relative to internal gear
126 rotations are equivalent to the amount of the teeth number difference (being 1 in the embodiment) of external gear 124 and internal gear 126.Pass through the opposite rotation
Turn, through external gear 124 eccentric shaft 118 around internal gear 126 axle center C126 and revolve.As a result, bearing eccentric shaft
118 wheel carrier 132 is rotated relative to the integrated shell 144 of internal tooth wheel body 126A with internal gear 126, thus for example
It can make to rotate with the object machinery (not shown) that wheel carrier 132 links.
Then, Primary Reference Fig. 1 (B) and amplify Fig. 3 of its major part and carry out characteristic knot to the 2nd deceleration device 200
Structure is illustrated.
2nd deceleration device 200 also have in the structure of up to the present illustrated related 1st deceleration device 100 in addition to
Structure except the structure on 150 periphery of base bearing.In short, other all constituting portion of the deceleration mechanism including wheel carrier 232
Part, including aperture or position for being formed in this composition component etc., in the 1st deceleration device 100 and the 2nd deceleration device 200
It is general.
The structure of 2nd deceleration device 200 is characterized mainly in that, without configuration main shaft between shell 244 and wheel carrier 232
It holds.The reason of not set base bearing, is in 2nd deceleration device 200, and the 2nd deceleration device 200 is to imagine it to be assembled in specifically
Object is mechanical and designs.
Structural example when 2nd deceleration device 200 is assembled in lathe (object is mechanical) 300 is shown in Fig. 4.The lathe (omits
Overview diagram) 300 have the 1st component 301 and the 2nd component 302.2nd deceleration device 200 is for making the 1st component 301 and the 2nd
302 relative rotary motion of component.
The shell 244 of 2nd deceleration device 200 links in flange part 244G via bolt 304 and the 1st component 301, load-side
Wheel carrier 232x link via bolt 306 and the 2nd component 302.A pair that 1st component 301 and the 2nd component 302 pass through large capacity
The bearing 308,309 of lathe side by relative rotation freely in a manner of link.Therefore, even without base bearing, the 2nd deceleration device
200 shell 244 and the wheel carrier 232x of load-side also can swimmingly carry out relative rotation.Also, even without base bearing, with
The wheel carrier 232y of the integrated load reverse side of wheel carrier 232x of load-side also can swimmingly carry out opposite revolve with shell 244
Turn.
However, the 2nd deceleration device 200 is not due to having configuration base bearing, it can not be as the 1st deceleration device 100
The axial movement of external gear 124 is limited by the inner ring 153 of base bearing 150.
Therefore, in the 2nd deceleration device 200 involved in present embodiment, in the base bearing configuration section 232B of wheel carrier 232
It configures movement restricting member 280 (280x, 280y), and the 2nd deceleration device 200 is limited by the movement restricting member 280
The axial movement of external gear 224.
The axial length L 280 of movement restricting member 280 is set as the inner ring with the base bearing 150 of the 1st deceleration device 100
153 axial length L 153 is identical.Therefore, it is formed with and is limited with the 1st deceleration device 100 by the inner ring 153 of base bearing 150
The identical structure of structure of the axial movement of external gear 124 processed, can also pass through movement limiting portion in the 2nd deceleration device 200
Part 280 limits the axial movement of external gear 224.
The movement restricting member 280 is formed by hardness lower than the material of external gear 224, and by the section parallel with axis (with
The section of the plane cutting of axle center C226 comprising internal gear 226) it is substantially long with stage portion 280S (280Sx, 280Sy)
Rectangular endless member is constituted.Movement restricting member 280 has the abutting part abutted with external gear 224 by boundary of stage portion 280S
280C (280Cx, 280Cy) and be presented axially in abutting part 280C the side opposite with external gear main part 280B
(280Bx,280By).The radial thickness H280C of abutting part 280C (only illustrates the load phase in H280Cx, H280Cy in Fig. 3
The H280Cy to toss about) constant, the radial thickness H280B (same, only to illustrate the H280By of load reverse side) of main part 280B
Also constant.The radial thickness H280C of abutting part 280C is less than the radial thickness H280B of main part 280B.
In addition, in present embodiment, in the external gear side end face 280D of the abutting part 280C of movement restricting member 280
(280Dx, 280Dy) is formed with chamfered edge portion 280F (only illustrating the 280Fy of load reverse side).But in this specification, true
When determining the thickness of abutting part 280C or main part 280B, the presence of chamfered edge portion 280F is not considered.In other words, here so-called " is supported
The representation of radial thickness of the radial thickness of socket part less than main part ", passes through using between abutting part and main part
Method other than chamfered edge generates the design of thickness difference.
In addition, being configured in present embodiment in radial thickness H280C constant abutting part 280C and radial thickness H280B
It is formed with stage portion 280S between constant main part 280B, due to the presence of stage portion 280S, so that abutting part 280C
Radial thickness H280C is less than the radial thickness H280B of main part 280B.But it is so-called " radial thickness of abutting part be less than main body
It is not limited to this structure for the specific structure of the radial thickness in portion ".Such as it is also possible to the periphery of abutting part and is formed as not flat with axis
Row, and the radial thickness of abutting part with close to external gear and gradually smaller structure (does not have platform between abutting part and main part
The structure in rank portion).
The explanation to the 2nd deceleration device 200 is returned to, the 2nd deceleration device 200 in present embodiment is in addition to above-mentioned mobile limit
Anti-dropout component 284 is also provided additionally with except component 280 processed.The anti-dropout component 284 obtains in the axial direction relative to shell 244
It is fixed, prevent the deceleration mechanism comprising external gear 224 from integrally falling off relative to shell 244 along axial direction, preventing export trade 226B opposite
It falls off in shell 244 along axial direction, prevent export trade 226B from radially falling off relative to shell 244.
Specifically, the anti-dropout component 284 is made of generally cricoid component.Anti-dropout component 284 include with outside
The shell bearing surface 284A that end face (end face for the being equivalent to outer ring bearing surface 144F) 244F of shell 244 is abutted；And with the shell
The mode of bearing surface 284A in the same plane extends and opposed with the axial end face 226B1 of export trade 226B outer to radially inner side
Sell opposed faces 284B.Also, in anti-dropout component 284, it is extended with protrusion 284C to 224 side of external gear in parallel with axis, it should
Protrusion 284C can be from the radial direction of the axial end portion of the overhang bracket export trade 226B of the radially inner side of export trade opposed faces 284B
Inside.Moreover, the axial end face 224E of front end face (with axis end face at right angle) 284D and external gear 224 of protrusion 284C
It is opposed.
The anti-dropout component 284 is configured in the retaining ring 285 and shell engaged with the circlip groove 244J for being formed in shell 244
Between 244 (being equivalent to outer ring bearing surface 144F's) end face 244F, and shell 244 is fixed on by the retaining ring 285.
Therefore, when from end on observation anti-dropout component 284 with external gear 224, the protrusion 284C's of anti-dropout component 284
Front end face 284D (a part) is Chong Die with the axial end face 224E of external gear 224.Also, the anti-dropout component from radial
When 284 and export trade 226B, the protrusion 284C of anti-dropout component 284 is Chong Die with the axial end portion of export trade 226B.Also, from axial direction
When observing anti-dropout component 284 and export trade 226B, the axial end of the export trade opposed faces 284B and export trade 226B of anti-dropout component 284
Face 226B1 overlapping.
In addition, anti-dropout component 284 is inserted in the diameter of the abutting part 280C of movement restricting member 280 in the embodiment
Outward recess portion (the radial thickness H280C of abutting part 280C is formed as less than the radial thickness H280B of main part 280B, by
This recess portion formed in the radial outside of abutting part 280C).That is, when from end on observation, 280 (main part of movement restricting member
It is 280B) Chong Die with anti-dropout component 284.
In addition, anti-dropout component 284 is with external gear 224 or export trade 226B without centainly abutting always.Rather, it is preferred to anticreep
Fall component and external gear or export trade when being operated normally by slightly across gap in a manner of it is opposed, and in shell and external gear
Axial position want to abut in a manner of preventing the deviation when larger deviation for some reason.
As described above, circlip groove 244J is only used in the 2nd deceleration device 200, but in the present embodiment, subtract with the 2nd
The shell 244 of speed variator 200 is same, in (not needing retaining ring) the 1st deceleration device 100 for not needing the circlip groove (144J)
Circlip groove 144J is also formed in shell 144.
Then, the effect of the series of this deceleration device is illustrated.
In this series, in the 1st deceleration device 100, the inner ring 153 of base bearing 150 with its in the axial direction to external gear
The axial end face of state and external gear 124 that the movement of opposite side is limited by the inner ring bearing surface 132C of wheel carrier 132
124E is abutted.Therefore, the axial movement of external gear 124 can be limited by the inner ring 153 of the base bearing 150.
On the other hand, in the 2nd deceleration device 200, (configured with base bearing 150 in the 1st deceleration device 100) wheel carrier
Movement restricting member 280 is arranged in 232 base bearing configuration section 232B, and limits external gear by the movement restricting member 280
224 axial movement.
It can get following biggish benefit as a result,.
It is well known that usually as limitation external gear axial movement method, except through base bearing inner ring come into
Except the method for row limitation, protrusion is formed also by the end face in the external gear side of wheel carrier, and limit using the protrusion
The method of the axial movement of external gear processed.But in present embodiment, if only being formed in the wheel carrier of the 2nd deceleration device for limiting
The protrusion of external gear processed, then it represents that the versatility (interchangeability) of wheel carrier disappears in the 1st deceleration device and the 2nd deceleration device.
Wheel carrier is also high one of the important component of cost in deceleration device, therefore is distinguished the 1st deceleration device and the 2nd deceleration device
Separately prepare that wheel carrier can become that cost be significantly increased mainly will be because.
In contrast, for example it is contemplated that passing through the wheel carrier in the 1st deceleration device and the 2nd deceleration device the two deceleration devices
Upper formation protrusion is by the unitized method of wheel carrier.But slows down firstly there are the 1st of the usual purposes with base bearing and fill
It sets, and in special-purpose, is big absolutely by the manufacturing mode that the 1st deceleration device is used as not the 2nd deceleration device of base bearing
It is most.In this case, the design alteration for be formed protrusion to wheel carrier will lead to very large-scale design alteration.This be because
For different from the design alteration in such as formation slot or hole etc., the design alteration for forming protrusion can substantially change wheel carrier itself
Design and manufacture process.
If also, such as the structure of the axial movement of external gear will be limited simply by the way that protrusion is arranged on wheel carrier
For the 1st, the 2nd deceleration device, then will be limited by the protrusion of the inner ring of base bearing and wheel carrier in the 1st deceleration device
The axial movement of external gear will lead to resistance to sliding increase.However, if it is desired to it avoids the situation and is set as the inner ring of base bearing not
The structure for limiting the axial movement of external gear, then be not only wheel carrier, it is also necessary to be designed change to circumferential component, will lead into
This is further significantly increased.
The series of related deceleration device according to the present embodiment, it is not necessary that the 1st deceleration device 100 and the 2nd is separately manufactured
The wheel carrier of deceleration device 200, and movement restricting member 280 is only configured in the 2nd deceleration device 200, therefore can substantially drop
Low cost.
In particular, in the series of the deceleration device involved in present embodiment, in the shell 144 of the 1st deceleration device 100
The identical circlip groove 144J of circlip groove 244J for being formed and only engaging retaining ring 285 used in the 2nd deceleration device 200.
Therefore, the shell 144 and the 2nd of the 1st deceleration device 100 including circlip groove 144J, 244J can be slowed down
244 completely generalization of shell of device 200.That is, can be by largest and high-cost shell generalization, so as to realize library
Deposit lightization of management and cost effective.
In addition, for shell, without having to completely generalization, such as it also can according to need and slow down constituting the 2nd
Circlip groove is formed when device 200.
Also, the series of deceleration device involved according to the present embodiment has opposite in the 2nd deceleration device 200
The anti-dropout component 284 of the export trade 226B of composition internal gear 226 to fall off is fixed and limited in the axial direction in shell 244,
And the anti-dropout component 284 is Chong Die with external gear 224 when from end on observation.
Axial movement of the external gear 224 relative to wheel carrier 232 can not only be limited by the anti-dropout component 284 as a result,
The axial movement of the external gear 224 relative to shell 244 can also be limited.That is, can prevent from causing to wrap because there is no base bearing
Deviate in the axial direction completely containing the deceleration mechanism including external gear 224 and wheel carrier 232 relative to shell 244 (when serious, or even can be from
Shell 244 falls off in the axial direction) unfavorable condition generation.
More specifically describe the effect.It is assumed that in the case where no anti-dropout component 284, such as will be assembled into pair
As the 2nd deceleration device 200 before machinery is placed in the situation of workbench (not shown) etc..In this case, due to the 2nd deceleration device
The heavier-weight of 200 shell 244 itself, therefore load-side is either made still to make load reverse side downward downward, shell 244
It will be fallen on workbench because of the weight of itself, it is possible to cause oil sealing 270 damaged or fall off.Also, such as also have
The mechanism that may slow down during transportation is integrally completely fallen off together with wheel carrier 232 from shell 244.
However, by anti-dropout component 284, can not only be limited in the series of deceleration device involved in present embodiment
Axial movement of the external gear 224 processed relative to wheel carrier 232, additionally it is possible to limit axial movement of the external gear relative to shell 244.Its
As a result, it is possible to be effectively prevented the generation of above-mentioned unfavorable condition.
In addition, in the series of deceleration device involved in present embodiment, no matter from end on observation or from radial,
The anti-dropout component 284 of 2nd deceleration device 200 is Chong Die with export trade 226B.That is, anti-dropout component 284 can prevent export trade
It the axial movement (falling off) of 226B and moves radially and (falls off).In particular, for the radial direction of export trade 226B falls off, due to passing through the
The outer ring 151 of the base bearing 150 of 1 deceleration device 100 is actually difficult to obtain identical structure, therefore can be considered anti-by being arranged
Releasing part 284 and obtain increased effect.
Also, in the series of deceleration device involved in present embodiment, the movement restricting member of the 2nd deceleration device 200
280 material by hardness lower than external gear 224 is formed.As described in this embodiment, if being only used for the axis of limitation external gear 224
To movement, then in most cases it is sufficient for requiring using the lower material of hardness.The lower material of hardness usually can be with
Low cost manufacturing, it is thus possible to which movement restricting member is obtained with lower cost.
Also, in the series of deceleration device involved in present embodiment, the movement restricting member of the 2nd deceleration device 200
280 include the abutting part 280C abutted with external gear 224；And it is presented axially in the opposite with external gear of abutting part 280C
Side main part 280B, the radial thickness H280C of abutting part 280C is less than the radial thickness H280B of main part 280B.By
This, can maintain the rigidity of the entirety of movement restricting member 280 higher, and can maintain to support with external gear 224 smaller
Junction product, can correspondingly reduce resistance to sliding.
In addition, in the movement restricting member 280 of the 2nd deceleration device 200, it is this it is so-called " part abutted with external gear
The structure of radial thickness of the radial thickness less than the part not abutted with the external gear " is not necessary structure.Mobile limitation
Component 290 for example can also be in simple ring-shaped as shown in Figure 5.
In 2nd deceleration device 200 shown in fig. 5, the movement restricting member 290 (290x, 290y) of the 2nd deceleration device 200
Radial thickness on axial any position is H290, is perseverance other than having chamfered edge portion 290F (290Fx, 290Fy)
It is fixed.As a result, due to there is no stage portion, it is thus possible to further decrease the manufacturing cost of movement restricting member 290.Also, due to
Become much larger with the slide area of external gear 224, thus have can (more inexpensive) material lower with hardness manufacture shifting
A possibility that dynamic limiting component 290.In addition, as described above, the presence or absence of chamfered edge portion will not influence the general of " constant thickness " here
It reads.
Other structures are identical as the structure of the 2nd deceleration device 200 in embodiment before, therefore only to phase in Fig. 5
Same component marks identical symbol, and omits repeated explanation.
In addition, in above embodiment, use tapered roller bearing as base bearing, but base bearing without have to by
Tapered roller bearing is constituted, such as can also be made of angular contact roller bearing or simpler ball bearing etc..
Also, it shows and is equipped with multiple eccentric bodies for swinging external gear in the position deviated from the axle center of internal gear
The eccentric oscillating-type deceleration device of axis, but in the series of deceleration device according to the present invention the 1st, the 2nd deceleration device not
It is defined in the deceleration device of this structure, such as can also be equally applicable to be provided only with 1 bias in the shaft core position of internal gear
The eccentric oscillating-type deceleration device of body axis.In addition, for example can also be suitable for the deceleration device of simple planetary structure.Always
It, as long as having external gear, with the internal gear of the external gear internal messing, the shell equipped with the internal gear and relative to the shell
The deceleration device of the wheel carrier of rotation, can be equally applicable, and can get same function and effect.
Claims (6)
1. a kind of series of deceleration device, the deceleration device have external gear, with the internal gear of the external gear internal messing, be equipped with
The series of the shell of the internal gear and the wheel carrier rotated relative to the shell, the deceleration device is characterized in that, comprising:
1st deceleration device is configured with base bearing between the shell and the wheel carrier；And the 2nd deceleration device, in the shell
Without configuring base bearing between the wheel carrier,
The wheel carrier of the wheel carrier and the 2nd deceleration device of 1st deceleration device is general,
In the 1st deceleration device, the inner ring of the base bearing of the base bearing configuration section by being configured at the wheel carrier is limited
The axial movement of the external gear,
In the 2nd deceleration device, limited by being configured at the movement restricting member of base bearing configuration section of the wheel carrier
The axial movement of the external gear,
In the 1st deceleration device, the axial direction for constituting the export trade of the internal gear is limited by the outer ring of the base bearing
It is mobile,
2nd deceleration device has a retaining ring for limiting the axial movement of the export trade, and the 2nd deceleration device
The circlip groove of the retaining ring is formed on the shell,
It is also formed on the shell of the 1st deceleration device general with the circlip groove of the 2nd deceleration device
The shell of circlip groove, the shell and the 2nd deceleration device of the 1st deceleration device is general.
2. the series of deceleration device according to claim 1, which is characterized in that
There is 2nd deceleration device limitation to constitute the anti-dropout component that the export trade of the internal gear falls off, the anti-dropout component
It is fixed in the axial direction relative to the shell, when from end on observation, the anti-dropout component is Chong Die with the external gear.
3. the series of deceleration device according to claim 1 or 2, which is characterized in that
Material of the movement restricting member of 2nd deceleration device by hardness lower than the external gear is formed.
4. the series of deceleration device according to claim 3, which is characterized in that
The radial thickness of the movement restricting member of 2nd deceleration device is constant in the axial direction.
5. the series of deceleration device according to claim 1 or 2, which is characterized in that
The movement restricting member of 2nd deceleration device includes abutting part, abuts with the external gear；And main part, position
In side opposite with external gear in the axial direction of the abutting part, the radial thickness of the abutting part is less than the radial direction of the main part
Thickness.
6. the series of deceleration device according to claim 3, which is characterized in that
The movement restricting member of 2nd deceleration device includes abutting part, abuts with the external gear；And main part, position
In side opposite with external gear in the axial direction of the abutting part, the radial thickness of the abutting part is less than the radial direction of the main part
Thickness.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014249404A JP6376964B2 (en) | 2014-12-09 | 2014-12-09 | Reducer series, reducer series manufacturing method, reducer |
| JP2014-249404 | 2014-12-09 |
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| Publication Number | Publication Date |
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| CN105673777A CN105673777A (en) | 2016-06-15 |
| CN105673777B true CN105673777B (en) | 2018-12-14 |
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| CN201510505487.3A Active CN105673777B (en) | 2014-12-09 | 2015-08-17 | The series of deceleration device |
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|---|---|
| JP (1) | JP6376964B2 (en) |
| KR (1) | KR101683622B1 (en) |
| CN (1) | CN105673777B (en) |
| DE (1) | DE102015116904B4 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6376964B2 (en) | 2014-12-09 | 2018-08-22 | 住友重機械工業株式会社 | Reducer series, reducer series manufacturing method, reducer |
| JP2018017342A (en) | 2016-07-28 | 2018-02-01 | ナブテスコ株式会社 | Gear device |
| JP6723657B2 (en) * | 2016-12-05 | 2020-07-15 | 住友重機械工業株式会社 | Reducer |
| JP6886360B2 (en) * | 2017-07-12 | 2021-06-16 | 住友重機械工業株式会社 | Eccentric swing type speed reducer |
| CN112368491A (en) * | 2018-06-28 | 2021-02-12 | 住友重机械工业株式会社 | Speed reducer |
| JP7334059B2 (en) * | 2019-05-10 | 2023-08-28 | ナブテスコ株式会社 | Rotary shaft member holding mechanism and reducer |
| JP2021004660A (en) * | 2019-06-27 | 2021-01-14 | ナブテスコ株式会社 | Bearing and reduction gear |
| US11255380B2 (en) * | 2019-08-30 | 2022-02-22 | Delta Electronics, Inc. | Bearing assembly and rotary shaft apparatus employing same |
| JP2021067317A (en) | 2019-10-23 | 2021-04-30 | ナブテスコ株式会社 | Speed reducer |
| JP7437225B2 (en) | 2020-04-30 | 2024-02-22 | ナブテスコ株式会社 | Reducer case, reducer, and method for manufacturing reducer case |
| DE102021111025A1 (en) | 2020-06-09 | 2021-12-09 | Nabtesco Corporation | REDUCTION GEAR AND DRIVE DEVICE |
| JP2022041209A (en) | 2020-08-31 | 2022-03-11 | ナブテスコ株式会社 | Speed reducer and drive device |
| JP7476070B2 (en) | 2020-09-28 | 2024-04-30 | ナブテスコ株式会社 | Reduction gear and drive gear |
| JP2022186256A (en) * | 2021-06-04 | 2022-12-15 | ナブテスコ株式会社 | Speed reducer |
| EP4198340A1 (en) | 2021-12-15 | 2023-06-21 | Nabtesco Corporation | Eccentric oscillation gear device and robot |
| US20230182286A1 (en) | 2021-12-15 | 2023-06-15 | Nabtesco Corporation | Eccentric oscillation gear device, robot, and industrial machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4208169B2 (en) * | 2000-03-15 | 2009-01-14 | ナブテスコ株式会社 | Reducer and robot joint device |
| JP4726185B2 (en) * | 2004-01-13 | 2011-07-20 | ナブテスコ株式会社 | Eccentric oscillating gear unit |
| JP2009041623A (en) * | 2007-08-07 | 2009-02-26 | Sumitomo Heavy Ind Ltd | Oscillation inscribed planetary gear structure |
| JP5270462B2 (en) | 2009-06-15 | 2013-08-21 | ナブテスコ株式会社 | Eccentric oscillating gear device and crankshaft assembling method in eccentric oscillating gear device |
| JP5782321B2 (en) * | 2011-07-15 | 2015-09-24 | ナブテスコ株式会社 | Gear device |
| JP5845045B2 (en) * | 2011-10-04 | 2016-01-20 | ナブテスコ株式会社 | Gear transmission |
| JP5771157B2 (en) * | 2012-01-06 | 2015-08-26 | 住友重機械工業株式会社 | Series of eccentric oscillating speed reducers |
| JP5868724B2 (en) * | 2012-02-23 | 2016-02-24 | 住友重機械工業株式会社 | Reducer, industrial machine, and method of incorporating reducer into industrial machine |
| JP5779120B2 (en) | 2012-02-24 | 2015-09-16 | 住友重機械工業株式会社 | Eccentric oscillation type speed reducer |
| JP5917421B2 (en) * | 2013-01-29 | 2016-05-11 | 住友重機械工業株式会社 | Series of eccentric oscillating speed reducers |
| CN104033542B (en) * | 2013-03-07 | 2016-06-08 | 鸿富锦精密工业（深圳）有限公司 | Cycloidal planetary gear speed reducer structure |
| JP6025642B2 (en) * | 2013-03-29 | 2016-11-16 | 住友重機械工業株式会社 | Planetary gear reducer and its series |
| JP6376964B2 (en) | 2014-12-09 | 2018-08-22 | 住友重機械工業株式会社 | Reducer series, reducer series manufacturing method, reducer |
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| Publication number | Publication date |
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| JP2016109264A (en) | 2016-06-20 |
| KR101683622B1 (en) | 2016-12-07 |
| CN105673777A (en) | 2016-06-15 |
| DE102015116904B4 (en) | 2022-03-17 |
| DE102015116904A1 (en) | 2016-06-09 |
| KR20160069987A (en) | 2016-06-17 |
| JP6376964B2 (en) | 2018-08-22 |
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