CN106763603A - A kind of planet screw thread roller bearing - Google Patents
A kind of planet screw thread roller bearing Download PDFInfo
- Publication number
- CN106763603A CN106763603A CN201710182553.7A CN201710182553A CN106763603A CN 106763603 A CN106763603 A CN 106763603A CN 201710182553 A CN201710182553 A CN 201710182553A CN 106763603 A CN106763603 A CN 106763603A
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- CN
- China
- Prior art keywords
- screw
- thread
- screw thread
- nut
- hollow lead
- 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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/22—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
- F16H25/2247—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers
- F16H25/2252—Planetary rollers between nut and screw
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a kind of planet screw thread roller bearing, and in particular to a kind of with the planetary roller screw exported without axial displacement.Threaded rollers of the present invention are uniformly distributed around hollow lead screw circumferencial direction, its convex external screw thread is meshed with the triangle internal thread of nut and the triangle external screw thread of hollow lead screw with a way of contact simultaneously, and threaded rollers two ends gear constitutes planetary gears with screw mandrel end tooth wheel and ring gear.Hollow lead screw external screw thread, the thread rotary orientation of roller external screw thread and nut inner thread, the pitch diameter of thread and number of starts need to meet certain relation, when nut is fixed, when hollow lead screw rotates, it promotes threaded rollers to make planetary motion and without axial displacement, and threaded rollers transmit axial load and radial load simultaneously.Planet screw thread roller bearing of the present invention, with more contact points, is suitably applied in high speed, the axially and radially larger occasion of load compared with the angular contact ball bearing of same size.
Description
Technical field
The present invention relates to a kind of planet screw thread roller bearing, and in particular to a kind of with the planet exported without axial displacement rolling
Post leading screw.
Background technology
Planetary roller screw is widely used in high-end mechanized equipment, including number with its unique structure and superior performance
The fields such as control lathe, ultraprecise instrument and meter, weaponry, industrial robot, advanced medical equipment and Aero-Space mechanism.OK
Star roller screw, with more thread contact points, drastically increases dynamic load rating and dead load compared with ball-screw.
Planet screw thread roller bearing of the invention is the derived product of planetary roller screw, but its threaded rollers only wire winding rod makees planet
Motion, does not have axial displacement, hence in so that the mechanism has bearing function, and can bear radial and axial connected load.
Compared with the angular contact ball bearing with size, the contact form of bearing assembly is a contact, area to planet screw thread roller bearing
Not to be load transmission element be threaded rollers, rather than steel ball, planet screw thread roller bearing have more contact points, Ke Yi great
Width improves its bearing capacity, rigidity and impact resistance.
Planet screw thread roller bearing is a kind of knot for rotating and being exported without axial displacement of planetary roller screw
Configuration formula.The planetary gears that roller gear, screw mandrel end tooth wheel and ring gear are constituted instead of retainer, and make roller by setting
Meter requires motion, realizes the effect of bearing, and it is having rigors to rigidity, life-span, bearing capacity and impact resistance
The fields such as space equipment, military equipment will have broad application prospects.
The content of the invention
The invention aims to solve the problems, such as that it is low that existing ball bearing has a bearing capacity, and then provide a kind of planet
Threaded rollers bearing.
The purpose of the present invention is achieved through the following technical solutions：
A kind of planet screw thread roller bearing, including：Two ring gears, two screw mandrel end tooth wheels, threaded rollers, nut and skies
Heart screw mandrel, hollow lead screw is arranged in nut and axis overlaps, and several threaded rollers, two are provided between nut and hollow lead screw
Individual screw mandrel end tooth wheel is co-axially mounted with hollow lead screw, is fastened on the end face of hollow lead screw both sides by screw, two ring gears with
Nut is co-axially mounted, and is fastened on the end face of nut both sides by screw, the screw thread of threaded rollers screw thread and sky simultaneously with nut
The screw thread of heart screw mandrel is meshed transmission axial load and radial load, the gear at threaded rollers two ends simultaneously with screw mandrel end tooth wheel and
Ring gear is meshed, and constitutes planetary gears, and threaded rollers make planetary motion around hollow lead screw, at the same transmit axial load and
Radial load.
The threaded rollers of planet screw thread roller bearing have identical thread rotary orientation, the spiral shell of hollow lead screw with the screw thread of nut
Line rotation direction is then with above-mentioned both are then opposite；The number of starts ns and central diameter ds of screw mandrel, the number of starts nr and central diameter dr of roller, spiral shell
Female number of starts nn and central diameter dn, need to meet following relation：ns:nr:Nn=ds:dr:dn.The silk of planet screw thread roller bearing
It is straight that rod end gear, threaded rollers two ends gear and ring gear are the involute cylinder with identical modulus and height change coefficient
Gear；The reference diameter Ds and tooth number Z s of screw mandrel end tooth wheel, threaded rollers two ends gear compound graduation circular diameter Dr and tooth number Z r, it is interior
The reference diameter Dn and tooth number Z n of gear ring, need to meet following relation：Ds=ds, Dr=dr, Dn=dn, Zs:Zr:Zn=ns:
nr:nn.The planetary roller screw threaded rollers for meeting above-mentioned relation only rotate and are exported without axial displacement, roller tooth
The planetary gears that wheel, screw mandrel end tooth wheel and ring gear are constituted instead of retainer, and roller is moved by design requirement, most
The effect of bearing is realized eventually.
Main advantages of the present invention are：Planet screw thread roller bearing compared with the angular contact ball bearing with size, screw thread
Contact radius can be designed, and contact point is more, can greatly improve its bearing capacity, rigidity and impact resistance.
Brief description of the drawings
Fig. 1 is that planet screw thread roller bearing assembles explosive view.
Fig. 2 is planet screw thread roller bearing end view.
Fig. 3 is the axial view of threaded rollers 3.
Fig. 4 is the structural representation of hollow lead screw 5.
Fig. 5 is the structural representation of screw mandrel end tooth wheel 2.
Reference in figure：1 is ring gear, and 2 is screw mandrel end tooth wheel, and 3 is threaded rollers, and 4 is nut, and 5 is air silk
Bar, 6 is the gear at threaded rollers two ends, and 7 is ellipse hole.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail：The present embodiment is being with technical solution of the present invention
Under the premise of implemented, give detailed implementation method, but protection scope of the present invention is not limited to following embodiments.
As shown in Fig. 1~Fig. 5, a kind of planet screw thread roller bearing involved by the present embodiment, including：Two ring gears 1,
Two screw mandrel end tooth wheels 2, threaded rollers 3, nut 4 and hollow lead screws 5, hollow lead screw 5 is arranged in nut 4 and axis overlaps,
Several threaded rollers 3 are provided between nut 4 and hollow lead screw 5, two screw mandrel end tooth wheels 2 are co-axially mounted with hollow lead screw 5, led to
Cross screw to be fastened on the both sides end face of hollow lead screw 5, two ring gears 1 are co-axially mounted with nut 4, and nut is fastened on by screw
On 4 both sides end faces, the screw thread of threaded rollers 3 is meshed to transmit with the screw thread of nut 4 and the screw thread of hollow lead screw 5 and axially carries simultaneously
Lotus and radial load, the gear 6 at the two ends of threaded rollers 3 are meshed with screw mandrel end tooth wheel 2 and ring gear 1 simultaneously, constitute planet tooth
Wheel mechanism, threaded rollers 3 make planetary motion around hollow lead screw 5, while transmit axial load and radial load, threaded rollers 3 with
, without displacement to axial, threaded rollers 3 are with nut 4 also without displacement to axial for hollow lead screw 5.
The threaded rollers 3 are one start screw or multiple thread, and the quantity of the threaded rollers 3 is at least three, around
The circumferencial direction of hollow lead screw 5 is uniformly installed, and realizes the effect of bearing roller, transmits axial load and radial load.It is described
The two ends of threaded rollers 3 are machined with gear and screw thread simultaneously in the range of one fixed width, its gear and ring gear 1 and screw mandrel end tooth
Wheel 2 is engaged and constitutes planetary gears simultaneously, has replaced the retainer of rolling element, can reduce the axial dimension of whole bearing.Institute
The screw thread shaft section tooth form of threaded rollers 3 is stated for convex, and monosymmetric circular arc is in the angle of the tangent line of middle path position
90 °, its side screw thread is meshed with the internal thread of nut 4 with a way of contact, the external screw thread of opposite side screw thread and hollow lead screw 5
It is meshed with a way of contact.
The nut 4 is multiple thread more than two head threads or two, and the shaft section tooth form of the screw thread of the nut 4 is three
Angle-style, thread form angle is 90 °, and its both ends of the surface is threaded hole for fastening ring gear 1, endoporus and the ring gear 1 at its two ends
Outer surface coordinates, and plays radial positioning, and the nut 4 realizes that bearing outer ring is acted on.
The hollow lead screw 5 is multiple thread more than two or two, the externally threaded shaft section tooth of the hollow lead screw 5
Type is triangular form, and thread form angle is 90 °, and its both ends of the surface is threaded hole for fastening screw mandrel end tooth wheel 2, the optical axis at its two ends with
The inner hole of screw mandrel end tooth wheel 2, plays radial positioning.The hollow lead screw 5 realizes that bearing inner race is acted on, and its inner circular is led to
Hole is used to install rotary shaft.
The external screw thread of the threaded rollers 3 has identical thread rotary orientation with the internal thread of nut 4, outside hollow lead screw 5
Screw thread is opposite with the thread rotary orientation of threaded rollers 3 and nut 4；The number of starts ns and central diameter ds of hollow lead screw 5, threaded rollers 3
Number of starts nr and central diameter dr, the number of starts nn and central diameter dn of nut 4 need to meet following relation：ns:nr:Nn=ds:
dr:dn。
The two ends gear 6 and ring gear 1 of the screw mandrel end tooth wheel 2, threaded rollers 3 are and become with identical modulus and height
The involute spur gear wheel of potential coefficient；The reference diameter Ds and tooth number Z s of screw mandrel end tooth wheel 2, two end teeth of threaded rollers 3
6 reference diameter Dr and tooth number Z r, the reference diameter Dn and tooth number Z n of ring gear 1 are taken turns, following relation need to be met：Ds=ds,
Dr=dr, Dn=dn, Zs:Zr:Zn=ns:nr:nn.
The thread rotary orientation of the threaded rollers 3 and nut 4 is dextrorotation, and the thread rotary orientation of hollow lead screw 5 is left-handed, screw mandrel 5
Number of starts ns=2, the number of starts nr=1 of roller 3, the number of starts nn=4 of nut 4；The screw thread ds=of screw mandrel 5
20mm, the pitch diameter of thread dr=10mm of roller 3, the pitch diameter of thread dn=40 of nut 4, meet：ds:dr:Dn=2:1:4.
The reference diameter Ds=20mm of screw mandrel end tooth wheel 2, the two ends gear compound graduation circular diameter Dr=10mm of threaded rollers 3,
The reference diameter Dn=40mm of ring gear 1,；The tooth number Z s of screw mandrel end tooth wheel 2, the two ends number of gear teeth Zr of threaded rollers 3, internal tooth
The tooth number Z n of circle 1, meets：Zs:Zr:Zn=2:1:4.
As shown in Fig. 2 the side screw thread of the threaded rollers 3 is meshed with the internal thread of nut 4 with a way of contact, it is another
Side screw thread is meshed with the external screw thread of hollow lead screw 5 with a way of contact, and thread contact points are more.
As shown in figure 5, the screw mandrel end tooth wheel 2 is fastened on the both sides end face of hollow lead screw 5, the screw mandrel end tooth by screw
Through hole on wheel 2 is ellipse hole 7, can adjust its position in the range of the certain angle of circumferencial direction, makes screw mandrel end tooth
Wheel 2 is engaged simultaneously with the face gear of all rollers 3.
During work, hollow lead screw 5 is rotated, and nut 4 is maintained static, and due to being acted on by frictional force, threaded rollers 3 are around itself
Axis rotation, while around the revolution of the axis of hollow lead screw 5, the two ends gear 6 of threaded rollers 3, ring gear 1 and the structure of screw mandrel end tooth wheel 2
Into planetary gears then ensure that roller is rotated by design requirement, and without axial displacement.
The major advantage of the present embodiment is：Planet screw thread roller bearing compared with the angular contact ball bearing with size, spiral shell
Line contact radius can be designed, and with more contact points, can greatly improve its bearing capacity, rigidity and shock resistance energy
Power.
The above, preferably specific embodiment only of the invention, these specific embodiments are all based on the present invention
Different implementations under general idea, and protection scope of the present invention is not limited thereto, it is any to be familiar with the art
Technical staff the invention discloses technical scope in, the change or replacement that can be readily occurred in should all be covered of the invention
Within protection domain.Therefore, protection scope of the present invention should be defined by the protection domain of claims.
Claims (10)
1. a kind of planet screw thread roller bearing, it is characterised in that including：Two ring gears (1), two screw mandrel end teeth wheel (2), spiral shells
Line roller (3), nut (4) and hollow lead screw (5), it is characterised in that hollow lead screw (5) is arranged in nut (4) and axis weight
Close, several threaded rollers (3), two screw mandrel end teeth wheel (2) and hollow lead screw are provided between nut (4) and hollow lead screw (5)
(5) it is co-axially mounted, is fastened on the end face of hollow lead screw (5) both sides by screw, two ring gears (1) and the coaxial peace of nut (4)
Dress, is fastened on the end face of nut (4) both sides by screw, the screw thread of threaded rollers (3) simultaneously with the screw thread of nut (4) and hollow
The screw thread of screw mandrel (5) is meshed and transmits axial load and radial load, and the gear (6) at threaded rollers (3) two ends is while and screw mandrel
End tooth wheel (2) and ring gear (1) are meshed, and constitute planetary gears, and threaded rollers (3) make planet fortune around hollow lead screw (5)
It is dynamic, while transmitting axial load and radial load.
2. planet screw thread roller bearing according to claim 1, it is characterised in that the threaded rollers (3) are single head spiral shell
Line or multiple thread.
3. planet screw thread roller bearing according to claim 2, it is characterised in that the quantity of the threaded rollers (3) is extremely
It it is less three, the circumferencial direction around hollow lead screw (5) is uniformly installed.
4. planet screw thread roller bearing according to claim 3, it is characterised in that logical on the screw mandrel end tooth wheel (2)
Hole is ellipse hole (7).
5. planet screw thread roller bearing according to claim 4, it is characterised in that the nut (4) for two head threads or
Multiple thread more than two.
6. planet screw thread roller bearing according to claim 5, it is characterised in that the axle of nut (4) internal thread cuts
Face tooth form is triangular form, and thread form angle is 90 °.
7. planet screw thread roller bearing according to claim 6, it is characterised in that the hollow lead screw (5) for two or
Multiple thread more than two.
8. planet screw thread roller bearing according to claim 7, it is characterised in that the hollow lead screw (5) is externally threaded
Shaft section tooth form is triangular form, and thread form angle is 90 °.
9. planet screw thread roller bearing according to claim 8, it is characterised in that the external screw thread of the threaded rollers (3)
There is identical thread rotary orientation, external screw thread and threaded rollers (3) and the nut (4) of hollow lead screw (5) with the internal thread of nut (4)
Thread rotary orientation it is opposite；The number of starts ns and central diameter ds of hollow lead screw (5), the number of starts nr and central diameter of threaded rollers (3)
Dr, the number of starts nn and central diameter dn of nut (4), need to meet following relation：ns:nr:Nn=ds:dr:dn.
10. planet screw thread roller bearing according to claim 9, it is characterised in that the screw mandrel end tooth wheel (2), screw thread
The two ends gear (6) and ring gear (1) of roller (3) are the involute cylindrical straight gear with identical modulus and height change coefficient
Wheel；The reference diameter Ds and tooth number Z s of screw mandrel end tooth wheel (2), two ends gear (6) the reference diameter Dr of threaded rollers (3) and
Tooth number Z r, the reference diameter Dn and tooth number Z n of ring gear 1, need to meet following relation：Ds=ds, Dr=dr, Dn=dn, Zs:
Zr:Zn=ns:nr:nn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710182553.7A CN106763603B (en) | 2017-03-24 | 2017-03-24 | A kind of planet screw thread roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710182553.7A CN106763603B (en) | 2017-03-24 | 2017-03-24 | A kind of planet screw thread roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763603A true CN106763603A (en) | 2017-05-31 |
| CN106763603B CN106763603B (en) | 2019-10-18 |
Family
ID=58966270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710182553.7A Active CN106763603B (en) | 2017-03-24 | 2017-03-24 | A kind of planet screw thread roller bearing |
Country Status (1)
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| CN (1) | CN106763603B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108161680A (en) * | 2018-03-02 | 2018-06-15 | 广东省智能制造研究所 | A kind of submissive polishing system |
| CN108302118A (en) * | 2018-03-23 | 2018-07-20 | 扬州众孚传动科技有限公司 | A kind of threaded rollers planetary bearing |
| CN108518500A (en) * | 2018-05-03 | 2018-09-11 | 淄博沃泰斯石化设备有限公司 | A kind of retainer reset planet roller screws device |
| CN108746709A (en) * | 2018-06-20 | 2018-11-06 | 陈浩 | A method of extending radial drilling machine robustness |
| CN110394411A (en) * | 2019-08-08 | 2019-11-01 | 绍兴市上虞杰盛铜业有限公司 | A kind of gear driven type hammering structure for row forging machine |
| CN111457069A (en) * | 2020-04-13 | 2020-07-28 | 中国船舶重工集团公司第七0四研究所 | Involute profile design method for planetary roller screw threads |
| CN113392544A (en) * | 2021-05-28 | 2021-09-14 | 东北林业大学 | Method for calculating contact load of planetary threaded roller bearing based on deformation coordination theory |
| CN113931983A (en) * | 2021-08-26 | 2022-01-14 | 北京精密机电控制设备研究所 | Differential roller spline pair |
| CN114215893A (en) * | 2021-12-21 | 2022-03-22 | 中国船舶重工集团公司第七0四研究所 | Compact planetary roller screw of gear transmission mode |
| CN114321309A (en) * | 2021-12-27 | 2022-04-12 | 李桐谋 | Roller screw structure with micro lead |
| CN115139921A (en) * | 2022-06-17 | 2022-10-04 | 湖南信息学院 | Multi-sensor fusion device |
| CN114321309B (en) * | 2021-12-27 | 2024-07-16 | 李桐谋 | Roller screw structure with tiny lead |
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| DE19823154C1 (en) * | 1998-05-23 | 1999-11-25 | Steinmeyer August Gmbh Co Kg | Planetary roller bearing |
| CN1973149A (en) * | 2004-06-22 | 2007-05-30 | 杉谷伸 | Gear mechanism, planetary gear device, rotating bearing device, and magical planetary gear speed reducer |
| CN104040172A (en) * | 2011-12-20 | 2014-09-10 | Imo控股有限责任公司 | Blade Bearing Or Nacelle Bearing Of A Wind Turbine |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108161680B (en) * | 2018-03-02 | 2024-01-30 | 广东省智能制造研究所 | Flexible polishing system |
| CN108161680A (en) * | 2018-03-02 | 2018-06-15 | 广东省智能制造研究所 | A kind of submissive polishing system |
| CN108302118A (en) * | 2018-03-23 | 2018-07-20 | 扬州众孚传动科技有限公司 | A kind of threaded rollers planetary bearing |
| CN108518500A (en) * | 2018-05-03 | 2018-09-11 | 淄博沃泰斯石化设备有限公司 | A kind of retainer reset planet roller screws device |
| CN108518500B (en) * | 2018-05-03 | 2019-05-28 | 淄博沃泰斯石化设备有限公司 | A kind of retainer reset planet roller screws device |
| WO2019210824A1 (en) * | 2018-05-03 | 2019-11-07 | 淄博沃泰斯石化设备有限公司 | Planetary roller threaded device capable of being restored by means of holder |
| CN108746709A (en) * | 2018-06-20 | 2018-11-06 | 陈浩 | A method of extending radial drilling machine robustness |
| CN108746709B (en) * | 2018-06-20 | 2019-08-27 | 绍兴市秀臻新能源科技有限公司 | A method of extending radial drilling machine robustness |
| CN110394411A (en) * | 2019-08-08 | 2019-11-01 | 绍兴市上虞杰盛铜业有限公司 | A kind of gear driven type hammering structure for row forging machine |
| CN110394411B (en) * | 2019-08-08 | 2021-04-23 | 绍兴市上虞杰盛铜业有限公司 | Gear transmission type hammering structure for line forging machine |
| CN111457069A (en) * | 2020-04-13 | 2020-07-28 | 中国船舶重工集团公司第七0四研究所 | Involute profile design method for planetary roller screw threads |
| CN111457069B (en) * | 2020-04-13 | 2023-02-03 | 中国船舶重工集团公司第七0四研究所 | Involute profile design method for planetary roller screw threads |
| CN113392544A (en) * | 2021-05-28 | 2021-09-14 | 东北林业大学 | Method for calculating contact load of planetary threaded roller bearing based on deformation coordination theory |
| CN113931983A (en) * | 2021-08-26 | 2022-01-14 | 北京精密机电控制设备研究所 | Differential roller spline pair |
| CN114215893A (en) * | 2021-12-21 | 2022-03-22 | 中国船舶重工集团公司第七0四研究所 | Compact planetary roller screw of gear transmission mode |
| CN114321309A (en) * | 2021-12-27 | 2022-04-12 | 李桐谋 | Roller screw structure with micro lead |
| CN114321309B (en) * | 2021-12-27 | 2024-07-16 | 李桐谋 | Roller screw structure with tiny lead |
| CN115139921A (en) * | 2022-06-17 | 2022-10-04 | 湖南信息学院 | Multi-sensor fusion device |
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