CN110319116A - Bearing and speed reducer - Google Patents
Bearing and speed reducer Download PDFInfo
- Publication number
- CN110319116A CN110319116A CN201910226754.1A CN201910226754A CN110319116A CN 110319116 A CN110319116 A CN 110319116A CN 201910226754 A CN201910226754 A CN 201910226754A CN 110319116 A CN110319116 A CN 110319116A
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- CN
- China
- Prior art keywords
- retainer
- lubrication groove
- ring
- bearing
- protruding portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 25
- 238000005461 lubrication Methods 0.000 claims abstract description 61
- 239000000314 lubricant Substances 0.000 claims abstract description 30
- 239000007787 solid Substances 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 210000000515 tooth Anatomy 0.000 description 21
- 238000004519 manufacturing process Methods 0.000 description 15
- 230000007246 mechanism Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 239000002184 metal Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000037237 body shape Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
-
- 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
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4641—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages comprising two annular parts joined together
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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
- 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
- F16C33/46—Cages for rollers or needles
- F16C33/56—Selection of substances
-
- 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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6696—Special parts or details in view of lubrication with solids as lubricant, e.g. dry coatings, powder
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Retarders (AREA)
Abstract
The present invention provides a kind of bearing and speed reducer.The multiple rollers and be configured at the radial outside of lubrication groove and roller is held in the first retainer of the peripheral part of lubrication groove that bearing has cylindric lubrication groove centered on the above lower central axis extended, configures along the outer peripheral surface of lubrication groove.First retainer has in multiple first columns portion that axis upwardly extends, the first ring that the end of the axial top in multiple first columns portion is connected with each other and from first circumferential radially inner side at least one protruding portion outstanding.Lubrication groove rotates relative to one another with the first retainer.Multiple rollers are respectively arranged between the first adjacent column portion.A part of roller, which is located at, more leans on radial outside compared with the first column portion.The second retainer is configured between the first ring and lubrication groove and between the first column portion and lubrication groove.Second retainer includes solid lubricant, is formed by solid memder, and at least part is located at the downside of protruding portion.
Description
Technical field
The present invention relates to a kind of bearing and speed reducers.
Background technique
In the past, it is known that the rolling bearing (being simply recorded as bearing below) for using the rotors such as roller (roller) is used
The technology of solid lubricant.By the way that solid lubricant is maintained at Bearing inner, and ensure the lubricity of roller, inhibits by rubbing
Caused bearing fatigue.Thus, in order to realize the long lifetime of bearing, Bearing inner make solid lubricant steadily in the long term with
The technology of roller contact and the holding solid lubricant is important.About the method to bearing filled solid lubricant, such as
It is recorded in Japanese Patent Laid-Open 2004-257491 bulletin and Japanese Patent Laid-Open 2017-15206 bulletin.
In Japanese Patent Laid-Open 2004-257491 bulletin, disclosing using shaping dies to manufacture makes roller, solid-state profit
Lubrication prescription and the method that roller is disposed in assembly formed body made of the retainer integration of specified position.Shaping dies contains
External mold, internal model, the hollow portion being formed between external mold and internal model and the middle mould that internal model is embedded in hollow portion.The heat of middle mould
Expansion rate is greater than the coefficient of thermal expansion of external mold and internal model.When formed body is assembled in manufacture, rolling has been arranged in insertion first in hollow portion
The retainer of son, and solid lubricant is filled into the gap of roller and retainer.Then, in the temperature for making shaping dies
It rises and thermally expands middle mould significantly, lubricant extrusion molding will be fixed to the roller kept through retainer, be thus solidified into
Shape dress matches formed body.
Following methods are disclosed in Japanese Patent Laid-Open 2017-15206 bulletin, it may be assumed that in the peripheral part of the lubrication groove of bearing
The first retainer (cage) for keeping roller is set, and then insertion includes solid lubricant between lubrication groove and the first retainer
Second retainer.As a result, by making solid lubricant and roller contact, and the lubrication of roller is also able to maintain in the movement of bearing
Property.Moreover, operating efficiency when manufacturing bearing improves by the way that part is made in solid lubricant in the form of the second retainer.
[patent document 1] Japanese Patent Laid-Open 2004-257491 bulletin
[patent document 2] Japanese Patent Laid-Open 2017-015206 bulletin
Summary of the invention
[problem to be solved by the invention]
But in manufacturing method documented by Japanese Patent Laid-Open 2004-257491 bulletin, the bearing comprising heat treatment
Manufacture needs very big workload and time.Moreover, in structure documented by Japanese Patent Laid-Open 2017-15206 bulletin, it will
Two bearings configure towards each other.Prevent the second retainer from deviateing or falling off between lubrication groove and the first retainer as a result,.
But using single bearing or by odd number bearing arrangement in use, being otherwise needed for preventing the second retainer from lubrication groove
The structure for deviateing or falling off between the first retainer.
The purpose of the present invention is to provide a kind of offset for inhibiting fixed lubricant or falls off and can simply manufacture
The structure of bearing.
[technical means to solve problem]
The illustrative first invention of this case is a kind of bearing, comprising: cylindric lubrication groove, the central axis of the above lower extension
Centered on；Multiple rollers are configured along the outer peripheral surface of the lubrication groove；And first retainer, it is configured at the radial direction of the lubrication groove
The roller, is held in the peripheral part of the lubrication groove by outside, and first retainer have upwardly extended in axis it is multiple
First column portion, the first ring that the end of the axial top in first column portion is connected with each other and circumferential radial from described first
Inside at least one protruding portion outstanding, the lubrication groove rotate relative to one another with first retainer, the multiple roller point
It is not configured between adjacent first column portion, a part of the roller is located at first column portion and more leans on diameter outside
Side is configured with the second retainer, institute between first ring and the lubrication groove and between first column portion and the lubrication groove
Stating the second retainer includes solid lubricant, is formed by solid memder, and at least part is located at the downside of the protruding portion.
[The effect of invention]
According to the illustrative first invention of this case, the first retainer has from the first circumferential radially inner side protrusion outstanding
Portion.In addition, at least part of the second retainer as the solid lubricant comprising solid memder is located at the protruding portion
Downside.Simple structure can be used to inhibit the offset of fixed lubricant or fall off as a result,.
Detailed description of the invention
Fig. 1 is the longitudinal section of speed reducer.
Fig. 2 is the cross-sectional view of speed reducer.
Fig. 3 is the cross-sectional view of bearing.
Fig. 4 is the exploded perspective view of bearing.
Fig. 5 is the partial longitudinal section figure of bearing.
Fig. 6 is the partial bottom view of the first retainer.
Fig. 7 is the longitudinal section of the first retainer.
Fig. 8 is the flow chart of the manufacture of bearing.
Fig. 9 is the longitudinal section of the first retainer of variation.
[explanation of symbol]
1: bearing
2: speed reducer
10: lubrication groove
11, the 11B: the first retainer
12: the second retainers
13: roller
20: input rotary body
21: eccentric part
30: deceleration mechanism
31: outer toothed gear
33: frame
40: output rotary body
41: the first plectane bodies
42: the second plectane bodies
43: pin
51: external tooth
52: outer inter-tooth slots
53: inserting hole
61: internal tooth
62: interior inter-tooth slots
70: ball bearing
71: grommet
90: rotary shaft
91: the first central axises
102: groove portion
110: the first column portions
111, the 111B: the first ring
112: the second rings
113,113B: protruding portion
114: the first inclined surface
115: underside recess
116B: protrusion
120: the second column portions
121: annulus
122: upper side pocket
123: the second inclined surface
141: the first taperings
142: the second taperings
311: being pressed into hole
321: fixing hole
331: flange part
S1~S5: process
Specific embodiment
Hereinafter, being on the one hand on the one hand illustrated to illustrative embodiment of the invention referring to attached drawing.In addition, in this case
Direction that will be parallel with central axis (aftermentioned rotary shaft and the first central axis) is known as " axial direction ", by the direction with orthogonality of center shaft
Referred to as " radial direction " will be known as " circumferential direction " along the direction of the circular arc centered on central axis.But " parallel direction " is also wrapped
Containing substantially parallel direction.Moreover, " orthogonal direction " also includes substantially orthogonal direction.Moreover, following say for convenience
It is bright, the right side of Fig. 1 is known as " axial top ", the left side of Fig. 1 is known as " axial lower section ".But it is not intended to by described
The direction when use defined to limit bearing and speed reducer of the invention in lower direction.
1. first embodiment > of <
The overall structure > of < 1-1. speed reducer
Fig. 1 is to will be provided with the speed reducer 2 of the bearing 1 of first embodiment of the invention with the plane comprising rotary shaft 90 to cut
Disconnected longitudinal section.Fig. 2 is the cross-sectional view of the speed reducer 2 of the position the A-A viewing from Fig. 1.
The speed reducer 2 is the rotation fortune that the rotary motion of the first revolving speed is converted to the second revolving speed lower than the first revolving speed
Dynamic, the so-called inscribed planetary speed reducer for making rotation speed slow down.Speed reducer 2 is, for example, to be assembled into robot, working machine, X-
Y stage, the disconnecting device of material, assembly line (conveyor line), turntable (turn table), Rolling roller (rolling
) etc. roller in driving mechanism and use.But speed reducer of the invention can also be used for other purposes.
As shown in Figure 1, the speed reducer 2 of present embodiment has input rotary body 20, deceleration mechanism 30 and output rotary body
40.The bearing 1 of present embodiment is included in deceleration mechanism 30.
Input rotary body 20 is using the component that rotates as the first revolving speed from externally input revolving speed.Present embodiment
In, the cylindric component configured along rotary shaft 90 becomes input rotary body 20.Input the axial top of rotary body 20
End is connected to directly or via other power transfer mechanisms the motor (diagram omit) as driving source.If driving motor
It is dynamic, then it inputs rotary body 20 and is rotated centered on rotary shaft 90 with the first revolving speed.
Inputting rotary body 20 has eccentric part 21.Eccentric part 21 has the outer of the cylindrical shape centered on the first central axis 91
Circumferential surface, first central axis 91 extend parallel to up and down and with rotary shaft 90 from the position that rotary shaft 90 deviates.If input
Rotary body 20 rotates, then the position of the first central axis 91 is also rotated centered on rotary shaft 90.
Deceleration mechanism 30 is inserted between input rotary body 20 and output rotary body 40, and the rotation for inputting rotary body 20 is made
Move the mechanism transmitted while slowing down to output rotary body 40.The deceleration mechanism 30 of present embodiment has outer toothed gear
31, frame 33 and bearing 1.
Bearing 1 is installed on the peripheral part of eccentric part 21.Moreover, outer toothed gear 31 is installed on bearing 1 via roller 13
Radial outside.Therefore, outer toothed gear 31 is rotatably freely supported centered on the first central axis 91 of eccentric part 21.
It is indicated as amplified in Fig. 2, outer toothed gear 31 has in its peripheral part to radial outside multiple external tooths 51 outstanding.
Moreover, having the outer inter-tooth slots 52 being recessed to radially inner side between adjacent external tooth 51.External tooth 51 and outer inter-tooth slots 52 are with the
In being alternately arranged in circumferential direction centered on one central axis 91.
Moreover, as shown in Figures 1 and 2, outer toothed gear 31 has multiple (being 8 in the example of Fig. 2) inserting holes 53.It is more
A inserting hole 53 is centered on the first central axis 91 in equally spaced arranging in circumferential direction.Each inserting hole 53 is compared with external tooth 51 and external tooth
Between slot 52 more lean on radially inner side, in the axial direction run through outer toothed gear 31.
In addition, the deceleration mechanism 30 of present embodiment has a piece of outer toothed gear 31, but the quantity of outer toothed gear 31
It can also be to be more than two panels.Moreover, the quantity of outer toothed gear 31 can be even number, it can also be odd number.
Frame 33 is will to input rotary body 20, output rotary body 40, bearing 1 and outer toothed gear 31 to be contained in the big of inside
Cause cylindric component.It is indicated as amplified in Fig. 2, circumference has to radially inner side multiple internal tooths outstanding frame 33 in the inner
61.Moreover, being equipped with the interior inter-tooth slots 62 being recessed to radial outside between adjacent internal tooth 61.Internal tooth 61 and interior inter-tooth slots 62 with
In being alternately arranged in circumferential direction centered on rotary shaft 90.
Multiple external tooths 51 of outer toothed gear 31 are engaged with each other with multiple internal tooths 61 of frame 33.That is, in speed reducer 2
When movement, the external tooth 51 of outer toothed gear 31 is embedded in the interior inter-tooth slots 62 of frame 33, and the internal tooth 61 of frame 33 is embedded in outer ratcheting
In the outer inter-tooth slots 52 of gear 31, outer toothed gear 31 rotates at the same time.In this way, frame 33, which plays, to be made in present embodiment
For the function of interior toothed gear.However, it is possible to it is different from frame 33 and in the inner peripheral portion of frame 33 be equipped with as other components
Interior toothed gear.
Outer 31 one side of toothed gear because input rotary body 20 power due to around rotary shaft 90 revolve, on one side because with frame 33
Internal tooth 61 engages and rotation.Herein, the quantity of internal tooth 61 possessed by frame 33 is more than external tooth possessed by outer toothed gear 31
51 quantity.Therefore, whenever outer 31 public affairs of toothed gear circle, the external tooth 51 engaged with the internal tooth 61 of the same position of frame 33
Positional shift.Outer toothed gear 31 is to the direction opposite with the input direction of rotation of rotary body 20 as a result, to be lower than first turn
The second revolving speed slowly rotation of speed.Therefore, the position of the inserting hole 53 of outer toothed gear 31 is also slowly revolved with the second revolving speed
Turn.
If the quantity of external tooth 51 possessed by outer toothed gear 31 is set as N, by the number of internal tooth 61 possessed by frame 33
Amount is set as M, then the reduction ratio P of mechanism of slowing down 30 becomes P=(the first revolving speed)/(the second revolving speed)=N/ (M-N).The example of Fig. 2
In, N=59, M=60, thus the reduction ratio P of this exemplary deceleration mechanism 30 is P=59.That is, the second revolving speed becomes the first revolving speed
1/59 revolving speed.But the reduction ratio P of deceleration mechanism 30 of the invention can also be other values.
Second revolving speed of the output rotary body 40 after slowing down is rotated centered on rotary shaft 90.As shown in Figure 1, this embodiment party
The output rotary body 40 of formula has the first plectane body 41, the second plectane body 42 and more (being 8 in present embodiment) pins 43.
First plectane body 41 is the circular component vertically configured relative to rotary shaft 90.The configuration of first plectane body 41
In relatively outer toothed gear 31 more by axial lower section.The first plectane body 41 and input rotary body 20 between and the first plectane body 41
Between frame 33, respectively inserted with ball bearing 70.The first plectane body 41 is relative to frame 33 and input rotary body 20 as a result,
And relative rotation is supported freely.
Moreover, being equipped with the quilt of multiple (being 8 in present embodiment) for being pressed into multiple pins 43 in the first plectane body 41
Press-in hole 311.It is multiple to be pressed into hole 311 centered on rotary shaft 90 in equally spaced arranging in circumferential direction.Respectively be pressed into hole 311 in
Axis extends upward through the first plectane body 41.
Second plectane body 42 is the circular component vertically configured relative to rotary shaft 90.Second plectane body 42 is matched
Relatively outer toothed gear 31 is placed in more by axial top.In the second plectane body 42 and input rotary body 20 between and the second plectane body
Between 42 and frame 33, respectively inserted with ball bearing 70.The second plectane body 42 is relative to frame 33 and input rotary body as a result,
20 and relative rotation is supported freely.
Moreover, being equipped with multiple (this embodiment party of the end with the axial top for being inserted into multiple pins 43 in the second plectane body 42
It is 8 in formula) fixing hole 321.Multiple fixing hole 321 are centered on rotary shaft 90 in equally spaced arranging in circumferential direction.Respectively
Fixing hole 321 extends upward through the second plectane body 42 in axis.
Multiple pins 43 are the columned components for connecting the first plectane body 41 with the second plectane body 42.Each pin 43 and rotation
Axis 90 configures substantially in parallel.Moreover, multiple pins 43 are inserted into respectively in multiple inserting holes 53 of outer toothed gear 31.Multiple pins
43 are respectively pressed into the multiple of the first plectane body 41 and are pressed into hole 311.Moreover, being equipped in the end of the axial lower section of each pin 43
Through expanding flange part 331.The upper surface of flange part 331 is contacted in axially upper with the first plectane body 41.Each pin 43 is prevented as a result,
Top falls off in the axial direction.Moreover, the end of the axial top of each pin 43 is inserted into the fixing hole 321 of the second plectane body 42, and
It is fixed by nuts in the second plectane body 42.
As shown in Fig. 2, constituting between the face of each inserting hole 53 and the outer peripheral surface of pin 43, there are gaps.In addition, between described
Inserted with circular grommet (bush ring) 71 in gap.When outer toothed gear 31 with slow down after the second revolving speed rotation when, institute
It states power and is transferred to each pin 43 via grommet 71.As a result, multiple pins 43, the first plectane body 41 and the second plectane body 42 are to rotate
With the rotation of the second revolving speed centered on axis 90.
Structure > of the < 1-2. about bearing
Next, being illustrated to the structure of bearing 1.Fig. 3 is the cross-sectional view of bearing 1.Fig. 4 is that the decomposition of bearing 1 is vertical
Body figure.Fig. 5 is the partial longitudinal section figure of circumferential a part of bearing 1.Wherein, in Fig. 5 and described Fig. 1, by aftermentioned protruding portion
113, upper side pocket 122, the first tapering 141, the second tapering 142 indicate bigger compared with other positions.As shown in Fig. 3~Fig. 5, axis
Holding 1 has lubrication groove 10, the first retainer 11, the second retainer 12 and multiple rollers 13.
Lubrication groove 10 is configured at the peripheral part of input rotary body 20.Lubrication groove 10 is the cylindrical shape centered on the first central axis 91
Component.When inputting the rotation of rotary body 20, lubrication groove 10 centered on the rotary shaft 90 for inputting rotary body 20 to rotate.Lubrication groove 10 in
Outer peripheral surface, which has, is circumferentially recessed into circular groove portion 102.Multiple rollers 13 along the outer peripheral surface of lubrication groove 10 the slot
Portion 102 and configure.Therefore, the axial movement of peripheral part of multiple rollers 13 in lubrication groove 10 is restricted.Moreover, multiple rollers 13
With the inner circumferential face contact of outer toothed gear 31.In addition, the quantity of roller 13 possessed by bearing 1 is 19 in the present embodiment
It is a, but can also be other quantity.
First retainer 11 is the molded product for being process resin forming.First retainer 11 is for example by will substantially liquid
Simultaneously implement to be heat-treated and form in the inside of the resin injection metal die of body shape.First retainer 11 is configured at the radial direction of lubrication groove 10
Outside is rotated relative to each other centered on the first central axis 91 with lubrication groove 10.In present embodiment, the first retainer 11 tool
Standby multiple first columns portion 110, the first ring 111, the second ring 112 and multiple protruding portion 113.
Multiple first columns portion 110 is upwardly extended in the radial outside of lubrication groove 10 respectively at axis.Moreover, multiple first columns portion
110 equally spaced arrange in the circumferential.The end of the axial top in multiple first columns portion 110 is each other by the first circular ring
111 are connected.Multiple rollers 13 are respectively arranged between the first adjacent column portion 110.Moreover, a part of roller 13 be configured at compared with
Radial outside is more leaned in first column portion 110.Therefore, multiple rollers 13 are kept in the peripheral part of lubrication groove 10 by multiple first columns portion 110,
And it is restricted in the circumferential direction movement of the peripheral part of lubrication groove 10.In addition, the quantity in the first column portion 110 is 19 in the present embodiment
Root, but can also be the quantity other than 19.
Moreover, the end of the axial lower section in multiple first columns portion 110 is connected by the second circular ring 112 each other.As a result,
Reinforce the structure of the first retainer 11.In addition, the internal diameter of the first ring 111 be greater than the second ring 112 internal diameter and the second ring 112 it is outer
Diameter.
Fig. 6 is the partial bottom view of the first retainer 11.Fig. 7 is the longitudinal section of the first retainer 11.Such as Fig. 4~Fig. 7
It is shown, multiple (being 5 in present embodiment) protruding portions 113 are equipped in the first retainer 11.Each protruding portion 113 is from the first ring
111 is prominent to radially inner side.But the distance of the end from the first central axis 91 to the radially inner side of each protruding portion 113 is greater than
The outer diameter of second ring 112.As long as quantity is simultaneously not limited in addition, protruding portion 113 is equipped at least one.Moreover, this embodiment party
In formula, multiple protruding portion 113 is respectively arranged on the axial upper and nonoverlapping position in the first column portion 110.It as a result, can be merely in axial direction
A pair of of metal die of upper opening and closing manufactures the first retainer 11.Moreover, in present embodiment, multiple protruding portion 113 is each other not
Equally spaced it is set in circumferential direction.But multiple protruding portion 113 can also be set in circumferential direction equally spaced from each otherly.Moreover, can also be equipped with
From the first ring 111 to radially inner side in spreading complete cycle and protruding portion outstanding in circumferential direction.
As shown in Fig. 3~Fig. 5, configured between the first ring 111 and lubrication groove 10 and between the first column portion 110 and lubrication groove 10
There is the second retainer 12.Second retainer 12 is the solid memder comprising solid lubricant.Multiple rollers 13 are in the outer of lubrication groove 10
Circumference is kept by the first retainer 11 and the second retainer 12.Therefore, multiple rollers 13 and the second retainer 12, i.e. solid
Lubricant contact.Multiple rollers 13 can swimmingly be rolled in the peripheral part of lubrication groove 10 as a result,.Therefore, can inhibit with roller 13
Rolling friction.Moreover, lubricant can be prevented to 1 External leakage of bearing by using solid lubricant.It as a result, can be long-term
Between maintain bearing 1 movement when roller 13 lubricity, improve speed reducer 2 reliability.
In addition, the second retainer 12 is the molded product for being molded with solid lubricant.Second retainer 12 is, for example, logical
It crosses the inside of substantially liquid lubricant injection metal die and implements heat treatment and form.In this way, by the way that solid is moistened
Part is made in the form of the second retainer 12 in lubrication prescription, can shorten the activity duration when manufacturing bearing 1.Also, it is not necessary to solid
The roasting of lubricant, thus workload is reduced, and can reduce the manufacturing cost of bearing 1.
In present embodiment, the second retainer 12 upwardly extends with annulus 121 and from annulus 121 in axis more
A second column portion 120.Annulus 121 is annular shape, is configured between the first ring 111 and lubrication groove 10 at least partially.Moreover, more
A second column portion 120 is configured between the first column portion 110 and lubrication groove 10.In this way, if being set as in the axial direction in multiple second columns portion 120
Only wherein a side have annulus 121 shape, then can be easily configured the molding metal die of the second retainer 12.By
This, can further decrease the manufacturing cost of bearing 1.
In addition, the second retainer 12 is from being axially inserted between the first retainer 11 and lubrication groove 10.Also, it is preferred that annulus
121 axial amplitude is greater than the axial amplitude of the first ring 111.As a result, roller 13 be easy and solid lubricant contacts.In addition, the
The quantity in two column portions 120 is 19 in the present embodiment, then can also be 19 but as long as equal with the quantity in the first column portion 110
Quantity other than root.
In the annulus 121 of the second retainer 12, equipped with multiple upsides as the recess portion being recessed from upper surface to downside
Recess portion 122.Multiple upper side pockets 122 are set near the peripheral part of the upper surface of annulus 121, more with the first retainer 11
The corresponding circumferential position of a protruding portion 113.It is configured between the first retainer 11 and lubrication groove 10 when by the second retainer 12
When, multiple protruding portion 113 is respectively embedded into multiple upper side pockets 122.It is protruded in this way, at least part of the second retainer 12 is located at
The downside in portion 113.The second retainer 12 is inhibited to offset up or fall off in axis to the upside of the first retainer 11 as a result,.And
And inhibit circumferential offset of second retainer 12 relative to the first retainer 11.As a result, the dynamic of bearing 1 is maintained during capable of growing
The lubricity of roller 13 when making, further increases the reliability of speed reducer 2.In addition, as long as upper side pocket 122 is equipped at least one
A, quantity is simultaneously not limited.Moreover, the quantity of upper side pocket 122 can also may not be equal with the quantity of protruding portion 113.
Moreover, the outer diameter of the annulus 121 of the second retainer 12 of present embodiment is greater than the second of the first retainer 11
The internal diameter of ring 112.Therefore, when between the first retainer 11 and lubrication groove 10 from when being axially inserted into the second retainer 12, the second column
The front end (lower end) in portion 120 is contacted with the second ring 112.As a result, by the front end (lower end) of the second retainer 12 in axis
Positioning upwards.Moreover, the second retainer 12 is inhibited to offset up or fall off in axis to the downside of the first retainer 11.As a result,
The lubricity that the roller 13 when the movement of bearing 1 is maintained during capable of further growing, further increases the reliability of speed reducer 2.
Moreover, the lower surface of the multiple protruding portion 113 in present embodiment, be respectively formed with towards radially inner side and
To the first inclined surface 114 of incline upward.Moreover, towards multiple upper side pockets 122 in the upper surface of the second retainer 12
Position is respectively formed with towards radially inner side and to the second inclined surface 123 of incline upward.As a result, in inserting in the axial direction
When entering the second retainer 12, multiple protruding portion 113 can be guided along the second inclined surface 123 of multiple upper side pockets 122 on one side
The first inclined surface 114, be respectively embedded into multiple protruding portion 113 in more multiple upper side pockets 122.In addition, the
One inclined surface 114 can be in the manufacturing process of the first retainer 11, the shape when the corner to protruding portion 113 carries out circular cone processing
At.But the first inclined surface 114 and the second inclined surface 123 can also may not be arranged.That is, the axial position of the lower surface of protruding portion 113
Set and the peripheral part of the upper surface of annulus 121 near axial position can also be certain.
Moreover, in present embodiment, a part of a part of the second ring 112, a part of annulus 121 and roller 13
In being overlapped in axial direction.That is, clamping up multiple rollers 13 in axis between the second ring 112 and annulus 121.If this is the case, i.e.
When just having no groove portion 102 in lubrication groove 10, the axial position of the first retainer 11, the second retainer 12 and roller 13 is also mutually limited
It sets.Therefore, the axial positional shift of roller 13 can be prevented independent of groove portion 102.Moreover, the second ring 112 have with
In the underside recess 115 for radially forming gap between first column portion 110.In addition, the front end (lower end) in the second column portion 120
It is embedded in underside recess 115.In this way, the one of a part in the first column portion 110, a part in the second column portion 120 and the second ring 112
Part is in being radially overlapped.It can prevent the second retainer 12 from collapsing due to the spin friction of roller 13 to radially inner side as a result,.
In addition, underside recess 115 has with the first tapering that the radial extent in gap narrows towards axial lower section
141.Moreover, the front end (lower end) in the second column portion 120 have with towards axial lower section and radial extent narrows second
Tapering 142.The second retainer 12 is more firmly kept between the first retainer 11 and lubrication groove 10 as a result,.Moreover, further suppression
Make circumferential offset of second retainer 12 relative to the first retainer 11.
Fig. 8 is the figure for indicating the manufacturing process example of bearing 1 of present embodiment.It, first will substantially liquid when manufacturing bearing 1
The lubricant of body shape injects metal die.Then, metal die is heat-treated, lubricant is thus made to solidify (S1).As a result,
Molding includes the second retainer 12 (S2) of solid lubricant.Then, the first retainer 11 is installed on lubrication groove 10 (S3), inside
The second retainer 12 (S4) is inserted between wheel 10 and the first retainer 11.Then, rolling is installed between the first adjacent column portion 110
13 (S5) of son.If this is the case, not needing to make process from solid lubricant to 1 filled solid lubricant of bearing and roasting bearing 1
Cured process.It can be reduced the manufacturing effort of bearing 1 as a result, the manufacturing cost of bearing 1 can be reduced.In addition, so-called heat treatment
Comprising roasting and cooling down.
2. variation > of <
More than, illustrative embodiment of the invention is illustrated, but the present invention is not limited to the embodiments.
Fig. 9 is the longitudinal section of the first retainer 11B of a variation.In the example of Fig. 9, it is formed with from the first ring 111B
Upper surface distinguish multiple (quantity identical as protruding portion 113B) protrusion 116B outstanding to upside.Moreover, multiple protruding portion
113B is prominent from protrusion 116B to radially inner side respectively.When the second retainer is configured between the first retainer 11B and lubrication groove
When, multiple protruding portion 113B is contacted with the upper surface of the second retainer 12 respectively.In this way, in the same manner as the embodiment, the
At least part of two retainers is located at the downside of protruding portion 113B.Inhibit the second retainer to the first retainer 11B's as a result,
Upside offsets up or falls off in axis.As a result, the lubricity of roller when maintaining bearing action during capable of growing, further mentions
The reliability of high speed reducer.
About the material of each component other than the first retainer and the second retainer for constituting speed reducer, as long as such as using
High-intensitive metal.But as long as the material of each component can tolerate load when using, metal may not be defined in.
Moreover, the first retainer is by injecting substantially liquid resin in metal die in the embodiment
Simultaneously implement to be heat-treated and form in portion.But the molding of the other methods such as machining can also be used in the first retainer.
Moreover, the material for constituting the first retainer is resin in the embodiment.But as long as the first retainer can
It is resistant to load when bearing action, can also be made of other materials such as metal materials.
Moreover, in the embodiment, the first column portion, the first ring possessed by the first retainer, the second ring and multiple prominent
Portion is formed as a component out.However, it is possible to using the first column portion, the first ring, the second ring and multiple protruding portion as difference
Component and assemble.
Moreover, lubrication groove has in outer peripheral surface is circumferentially recessed into circular groove portion in the embodiment.But
Can also may not have groove portion.As long as at this point, multiple rollers multiple first columns portion, the first ring as possessed by the first retainer and
Two environmental protection are held in the peripheral part of lubrication groove.
Moreover, the second retainer is by injecting metal die for substantially liquid lubricant in the embodiment
Simultaneously implement heat treatment and form in inside.But the molding of the other methods such as machining can also be used in the second retainer.At this point, only
Solid lubricant in advance through thermmohardening is processed into the shape for having annulus and the second column portion.
Moreover, bearing is manufactured by the sequence of S1 to S5 in the embodiment.But bearing can also may not be by these
Sequence manufactures.For example, being also alternatively inserted into the process (S4) of the second retainer between lubrication groove and the first retainer and in adjoining
The first column portion between install roller process (S5) sequence.It as a result, can assembled in advance lubrication groove, the first retainer and roller.
Then, by the way that the second retainer of preforming to be optionally inserted between lubrication groove and the first retainer, and bearing can be manufactured.
It, can also be with each shape shown in the drawings of this case not moreover, the shape about speed reducer or the detail section of bearing
Together.Moreover, can also be appropriately combined in the range of not generating contradiction by each element occurred in the embodiment or variation.
[industrial availability]
The present invention can be used for bearing and speed reducer.
Claims (14)
1. a kind of bearing characterized by comprising
Cylindric lubrication groove, centered on the central axis of the above lower extension；
Multiple rollers are configured along the outer peripheral surface of the lubrication groove；And
First retainer is configured at the radial outside of the lubrication groove, and the roller is held in the peripheral part of the lubrication groove,
First retainer has:
Multiple first columns portion, upwardly extends in axis；
The end of the axial top in multiple first column portions is connected with each other by the first ring；And
At least one protruding portion, it is prominent from the described first circumferential radially inner side,
The lubrication groove rotates relative to one another with first retainer,
Multiple rollers are respectively arranged between adjacent first column portion,
A part of the roller is located at first column portion and more leans on radial outside,
The second retainer is configured between first ring and the lubrication groove and between first column portion and the lubrication groove,
Second retainer includes solid lubricant, is formed by solid memder, and at least part is located at the protruding portion
Downside.
2. bearing according to claim 1, which is characterized in that first retainer has multiple protruding portions,
The multiple protruding portion is set in circumferential direction equally spaced from each otherly.
3. bearing according to claim 1, which is characterized in that first retainer has multiple protruding portions,
The multiple protruding portion is set in circumferential direction to unequal interval each other.
4. bearing according to any one of claim 1 to 3, which is characterized in that second retainer have as from
Side pocket at least one for the recess portion that upper surface is recessed to downside,
The protruding portion is embedded in the upper side pocket.
5. bearing according to any one of claim 1 to 3, which is characterized in that the protruding portion and described second is kept
The upper surface of frame contacts.
6. bearing according to any one of claim 1 to 3, which is characterized in that the protruding portion in axial direction not with institute
State the overlapping of the first column portion.
7. bearing according to any one of claim 1 to 3, which is characterized in that the lower surface of the protruding portion have with
Towards radially inner side and to the first inclined surface of incline upward.
8. bearing according to any one of claim 1 to 3, which is characterized in that the axial direction of the lower surface of the protruding portion
Position is certain.
9. bearing according to any one of claim 1 to 3, which is characterized in that second retainer is will be described solid
The molded product that body lubricant is molded with.
10. bearing according to any one of claim 1 to 3, which is characterized in that second retainer includes
Circular annulus；And
Multiple second columns portion is upwardly extended from the annulus in axis,
The annulus is configured between first ring and the lubrication groove,
Second column portion is configured between first column portion and the lubrication groove.
11. bearing according to claim 10, which is characterized in that first retainer also includes
The end of the axial lower section in multiple first column portions is connected with each other by the second ring,
The internal diameter of first ring is greater than the internal diameter of second ring,
The front end in second column portion is contacted with second ring.
12. bearing according to claim 11, which is characterized in that the internal diameter of first ring is greater than the outer of second ring
Diameter.
13. bearing according to claim 12, which is characterized in that from the central axis to the radially inner side of the protruding portion
End distance be greater than second ring outer diameter.
14. a kind of speed reducer, makes rotation speed slow down, it is characterised in that including according to any one of claims 1 to 13
Bearing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-063756 | 2018-03-29 | ||
| JP2018063756A JP2019173901A (en) | 2018-03-29 | 2018-03-29 | Bearing and speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110319116A true CN110319116A (en) | 2019-10-11 |
Family
ID=68113006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910226754.1A Withdrawn CN110319116A (en) | 2018-03-29 | 2019-03-25 | Bearing and speed reducer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2019173901A (en) |
| CN (1) | CN110319116A (en) |
| TW (1) | TW201942489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594866A (en) * | 2020-12-04 | 2022-06-07 | 群光电子股份有限公司 | Mouse (Saggar) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021134817A (en) * | 2020-02-25 | 2021-09-13 | Ntn株式会社 | Solid lubrication rolling bearing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008249105A (en) * | 2007-03-30 | 2008-10-16 | Ntn Corp | Roller bearing |
| CN102996644A (en) * | 2011-09-08 | 2013-03-27 | 株式会社捷太格特 | Bearing device, speed reduction mechanism including the bearing device, and motor torque transmission device |
| CN104718388A (en) * | 2012-10-04 | 2015-06-17 | Skf公司 | Bearing cage and rolling element bearing |
| CN105074241A (en) * | 2013-02-20 | 2015-11-18 | 斯凯孚公司 | Rolling bearing cage with latching means, and needle bearing with an outer ring which is latched onto a cage |
| CN106321648A (en) * | 2015-07-03 | 2017-01-11 | 日本电产新宝株式会社 | Bearing and speed reducer |
-
2018
- 2018-03-29 JP JP2018063756A patent/JP2019173901A/en active Pending
-
2019
- 2019-03-25 CN CN201910226754.1A patent/CN110319116A/en not_active Withdrawn
- 2019-03-27 TW TW108110598A patent/TW201942489A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008249105A (en) * | 2007-03-30 | 2008-10-16 | Ntn Corp | Roller bearing |
| CN102996644A (en) * | 2011-09-08 | 2013-03-27 | 株式会社捷太格特 | Bearing device, speed reduction mechanism including the bearing device, and motor torque transmission device |
| CN104718388A (en) * | 2012-10-04 | 2015-06-17 | Skf公司 | Bearing cage and rolling element bearing |
| CN105074241A (en) * | 2013-02-20 | 2015-11-18 | 斯凯孚公司 | Rolling bearing cage with latching means, and needle bearing with an outer ring which is latched onto a cage |
| CN106321648A (en) * | 2015-07-03 | 2017-01-11 | 日本电产新宝株式会社 | Bearing and speed reducer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594866A (en) * | 2020-12-04 | 2022-06-07 | 群光电子股份有限公司 | Mouse (Saggar) |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019173901A (en) | 2019-10-10 |
| TW201942489A (en) | 2019-11-01 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191011 |