CN2628807Y - Planetary roller screw auxiliary - Google Patents
Planetary roller screw auxiliary Download PDFInfo
- Publication number
- CN2628807Y CN2628807Y CNU03249713XU CN03249713U CN2628807Y CN 2628807 Y CN2628807 Y CN 2628807Y CN U03249713X U CNU03249713X U CN U03249713XU CN 03249713 U CN03249713 U CN 03249713U CN 2628807 Y CN2628807 Y CN 2628807Y
- Authority
- CN
- China
- Prior art keywords
- nut
- roller
- screw mandrel
- flexible
- gear
- 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.)
- Expired - Lifetime
Links
Images
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
- 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
Abstract
The utility model discloses a planet roller screw mandrel pair, a plurality of columnar spiral rollers (6) are evenly distributed between a screw mandrel (1) and a nut (7), the spiral rollers (6) mesh with the screw mandrel (1) and also with the nut (2); the screw mandrel (1),the nut (7) and the spiral roller (6) have the same thread sense; and axial leads of the spiral rollers (6), the screw mandrel (1), and the nut (7) core parallel mutually. The utility model has the advantages of strong bearing capacity, precise movement, and wide scope of the suitable criterion and so on.
Description
Affiliated technical field
The utility model relates to a kind of actuator that does straight reciprocating motion, relates in particular to a kind of will rotatablely moving and accurately is converted into straight-line planetary roller screw pair.
Background technique
To rotatablely move and accurately be converted into straight line motion, prior art is widely used to be ball wire bar pair.In the ball screw auxiliary driving, contact stressed for point between ball and raceway, contact stress is bigger, bearing capacity is less relatively, and because of the difficult control of machining accuracy of ball, ball size uniformity is difficult to guarantee, influences its contact uniformity and kinematic accuracy, range scale is limited, and especially small size, the to-and-fro motion of little helical pitch scope are restricted especially.
Summary of the invention
The purpose of this utility model just provides the big planetary roller screw pair of range scale that a kind of bearing capacity is strong, kinematic accuracy good, be suitable for.
The utility model solves its technical problem, the technological scheme that is adopted is: a kind of planetary roller screw pair, constitute by screw mandrel and nut etc., and its structural feature is: the flexible-roller of several columns that distribute equably between screw mandrel and the nut, flexible-roller both meshed with screw mandrel, meshed with nut again; Thread rotary orientation on screw mandrel, nut and the flexible-roller is identical, and flexible-roller, screw mandrel, nut three's shaft axis is parallel to each other.
When screw mandrel of the present utility model rotated, flexible-roller had not only been done rotation but also wire winding rod is made revolution motion as planet between screw mandrel and nut, and simultaneously, the relative screw mandrel of nut is moving linearly vertically.Realization rotatablely moves to straight-line conversion.
Compared with prior art, the beneficial effects of the utility model are: flexible-roller and screw mandrel and nut are the profile of tooth engagement between the spiral tooth, the subsequent corrosion of contact surface is big, and contact points increases, its contact condition has contacted bigger improvement than ball with point between raceway, contact stress reduces, and bearing capacity and life-span improve; Helical screw, nut and flexible-roller all belong to screw thread processing, and difficulty of processing is low than ball and arc raceway, can guarantee higher processing precision, makes its kinematic accuracy height; Because the convenience of screw thread processing, the planetary roller screw pair of the little helical pitch of small size is also more easily made, and its dimensional range that is suitable for is wide.
Respectively there is a gear at above-mentioned flexible-roller two ends, gear and the ring gear engagement that is fixed on the nut two ends.The utility model can guarantee that the relative nut of flexible-roller makes pure rolling like this, and does not have slide relative, further guarantees the validity of conversion of motion.
Respectively there is a roundlet column cap in the gear outside at above-mentioned flexible-roller two ends, and the small sircle hole on this roundlet column cap and two ends keep enclosing is for movingly.Nationality keeps the effect of circle like this, and the utility model constrains in several flexible-rollers together, and it is synchronized with the movement, and guarantees that the even carrying of flexible-roller is stressed, further improves bearing capacity of the present utility model.
Above-mentioned nut is made of for two sections left nut, right nut, is provided with between left and right nut to adjust ring.The utility model is when assembling like this, and the thickness of grinding-in adjustment ring can be eliminated axial clearance, and screw mandrel is carried out axial pretightening, to improve the rigidity of kinematic accuracy and transmission.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the utility model embodiment's a plan view.
Fig. 2 is the utility model embodiment's a end view.
Fig. 3 is the A-A sectional view of Fig. 1.
Embodiment
Fig. 1, Fig. 2, Fig. 3 illustrate, a kind of embodiment of the present utility model is: in a kind of planetary roller screw pair that is made of screw mandrel 1 and nut 7 grades, the flexible-roller 6 of several columns that distribute equably between screw mandrel 1 and the nut 7, flexible-roller 6 both meshed with screw mandrel 1, again with nut 2 engagements; Thread rotary orientation on screw mandrel 1, nut 7 and the flexible-roller 6 is identical, and flexible-roller 6, screw mandrel 1, nut 7 threes' shaft axis is parallel to each other.The number of flexible-roller 6 is 12 in this example, also can be at least 3 a plurality of when specifically implementing, but generally is no more than 24.
Because of flexible-roller 6 identical with thread rotary orientation on the screw mandrel 1, so cross-shaped engagement of helix of both sides adjacent (engagement place), when screw mandrel 1 rotates, produce motion to axial with flexible-roller 6, the both relative screw mandrel 1 of flexible-roller 6 is made pure rolling simultaneously, produce the rotation reverse with screw mandrel 1, wire winding rod 1 is done and screw mandrel 1 revolution in the same way again; Flexible-roller 6 and nut 7 are helical toothing in the same way, and make pure rolling relatively, so no axial motion, drive nut 7 relative screw mandrels 1 are moving linearly vertically.Thereby realize rotatablely moving to straight-line accurate conversion.
Fig. 1 illustrates, and respectively there is a gear 10 at flexible-roller 6 two ends of present embodiment, gear 10 and ring gear 5 engagements that are fixed on nut 7 two ends; In order to guarantee the pure rolling relation between flexible-roller 6 and the nut 7.More specifically, this routine ring gear 5 is with its internal tooth and gear 10 engagements, and ring gear 5 is fixed on the nut 7 by elastic cylindrical pin 4.
Fig. 1, Fig. 2 illustrate, and respectively there is a roundlet column cap 11 in gear 10 outsides at present embodiment flexible-roller 6 two ends, and the small sircle hole on this roundlet column cap 11 and the two ends maintenance circle 2 also promptly keeps circle 2 to pass through its small sircle hole moving sleeve on roundlet column cap 11 for movingly.In order to guarantee all flexible-roller synchronous rollings.This example also is provided with a hole with Steel Cable Baffle Ring 3, to carry out axial limiting to keeping enclosing 2 in ring gear 5 outsides of being fixed on the nut 7.
Fig. 1 also illustrates, and the nut 7 of this enforcement is made of for two sections left nut 7a, right nut 7b, is provided with between left and right nut 7a, 7b to adjust ring 9, and during assembling, the thickness of adjusting ring 9 needs match grinding, in order to work to eliminate axial clearance and pretension.Fig. 1, Fig. 2, Fig. 3 also illustrate, and this example is also set up a key 8 and worked to keep left and right nut 7a, 7b fixed phase relation and circumferentially locate with outer pipe fitting on left and right nut 7a, 7b.
Obviously, when nut 7 of the present utility model was made of two sections of left nut 7a, right nut 7b, the two ends of nut 7 were exactly the outer end of left nut 7a, right nut 7b.
Claims (4)
1. planetary roller screw pair, by screw mandrel (1) and nut formations such as (7), it is characterized in that: the flexible-roller (6) of several columns that distribute equably between described screw mandrel (1) and the nut (7), flexible-roller (6) both meshed with screw mandrel (1), meshed with nut (2) again; Thread rotary orientation on screw mandrel (1), nut (7) and the flexible-roller (6) is identical, and flexible-roller (6), screw mandrel (1), nut (7) three's shaft axis is parallel to each other.
2. a kind of planetary roller screw pair according to claim 1 is characterized in that: respectively there is a gear (10) at described flexible-roller (6) two ends, gear (10) and ring gear (5) engagement that is fixed on nut (7) two ends.
3. a kind of planetary roller screw pair according to claim 2, it is characterized in that: respectively there is a roundlet column cap (11) in gear (10) outside at described flexible-roller (6) two ends, and the small sircle hole on this roundlet column cap (11) and the two ends maintenance circles (2) is for movingly.
4. planetary roller screw pair according to claim 1 is characterized in that: described nut (7) is provided with between left and right nut (7a, 7b) and is adjusted ring (9) by left nut (7a), two sections formations of right nut (7b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03249713XU CN2628807Y (en) | 2003-07-29 | 2003-07-29 | Planetary roller screw auxiliary |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03249713XU CN2628807Y (en) | 2003-07-29 | 2003-07-29 | Planetary roller screw auxiliary |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2628807Y true CN2628807Y (en) | 2004-07-28 |
Family
ID=34252736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU03249713XU Expired - Lifetime CN2628807Y (en) | 2003-07-29 | 2003-07-29 | Planetary roller screw auxiliary |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2628807Y (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965466A (en) * | 2008-03-12 | 2011-02-02 | 博格华纳公司 | Continuously variable belt drive system |
| CN102182806A (en) * | 2011-04-29 | 2011-09-14 | 黄溧震 | Planetary roller screw |
| CN102705465A (en) * | 2012-06-20 | 2012-10-03 | 江苏品德机电科技有限公司 | Novel planet pin roller screw assembly |
| CN102734417A (en) * | 2012-06-21 | 2012-10-17 | 西北工业大学 | Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides |
| CN102767601A (en) * | 2011-05-05 | 2012-11-07 | 郭杰 | Threaded shaft pillar lead screw |
| CN102808911A (en) * | 2012-08-22 | 2012-12-05 | 西北工业大学 | Hollow planet roller lead screw pair |
| CN102829145A (en) * | 2012-09-07 | 2012-12-19 | 西北工业大学 | Planetary roller screw pair capable of being self-locked |
| CN102933873A (en) * | 2010-06-07 | 2013-02-13 | 谢夫勒科技股份两合公司 | Nut of a planetary roller screw drive, and method for producing such a nut |
| CN103089948A (en) * | 2011-10-31 | 2013-05-08 | 北京精密机电控制设备研究所 | Planet roller screw servo device with constant transmission ratio |
| CN103133619A (en) * | 2011-12-01 | 2013-06-05 | 谢夫勒科技股份两合公司 | Planetary rolled thread drive |
| CN104145138A (en) * | 2012-02-28 | 2014-11-12 | 舍弗勒技术有限两合公司 | Planetary roller screw drive, and method for producing a planetary roller screw drive |
| CN104179911A (en) * | 2014-08-11 | 2014-12-03 | 中国航天科技集团公司烽火机械厂 | Long nut reverse planet pin roller lead screw |
| CN105782381A (en) * | 2016-05-24 | 2016-07-20 | 江苏瑞安特机械集团有限公司 | Planet pin roller screw rod pair |
| CN111779810A (en) * | 2020-06-01 | 2020-10-16 | 北京精密机电控制设备研究所 | Planetary roller screw |
-
2003
- 2003-07-29 CN CNU03249713XU patent/CN2628807Y/en not_active Expired - Lifetime
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965466A (en) * | 2008-03-12 | 2011-02-02 | 博格华纳公司 | Continuously variable belt drive system |
| CN102933873B (en) * | 2010-06-07 | 2016-02-17 | 舍弗勒技术股份两合公司 | The nut of planetary roller screw-driven part and the method for the manufacture of this nut |
| CN102933873A (en) * | 2010-06-07 | 2013-02-13 | 谢夫勒科技股份两合公司 | Nut of a planetary roller screw drive, and method for producing such a nut |
| CN102182806A (en) * | 2011-04-29 | 2011-09-14 | 黄溧震 | Planetary roller screw |
| CN102767601A (en) * | 2011-05-05 | 2012-11-07 | 郭杰 | Threaded shaft pillar lead screw |
| CN103089948A (en) * | 2011-10-31 | 2013-05-08 | 北京精密机电控制设备研究所 | Planet roller screw servo device with constant transmission ratio |
| CN103133619A (en) * | 2011-12-01 | 2013-06-05 | 谢夫勒科技股份两合公司 | Planetary rolled thread drive |
| CN104145138B (en) * | 2012-02-28 | 2018-08-10 | 舍弗勒技术股份两合公司 | Method for manufacturing planetary roller screw gear |
| CN104145138A (en) * | 2012-02-28 | 2014-11-12 | 舍弗勒技术有限两合公司 | Planetary roller screw drive, and method for producing a planetary roller screw drive |
| CN102705465A (en) * | 2012-06-20 | 2012-10-03 | 江苏品德机电科技有限公司 | Novel planet pin roller screw assembly |
| CN102734417A (en) * | 2012-06-21 | 2012-10-17 | 西北工业大学 | Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides |
| CN102734417B (en) * | 2012-06-21 | 2014-10-29 | 西北工业大学 | Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides |
| CN102808911A (en) * | 2012-08-22 | 2012-12-05 | 西北工业大学 | Hollow planet roller lead screw pair |
| CN102829145B (en) * | 2012-09-07 | 2015-04-22 | 西北工业大学 | Planetary roller screw pair capable of being self-locked |
| CN102829145A (en) * | 2012-09-07 | 2012-12-19 | 西北工业大学 | Planetary roller screw pair capable of being self-locked |
| CN104179911A (en) * | 2014-08-11 | 2014-12-03 | 中国航天科技集团公司烽火机械厂 | Long nut reverse planet pin roller lead screw |
| CN104179911B (en) * | 2014-08-11 | 2017-04-12 | 中国航天科技集团公司烽火机械厂 | Long nut reverse planet pin roller lead screw |
| CN105782381A (en) * | 2016-05-24 | 2016-07-20 | 江苏瑞安特机械集团有限公司 | Planet pin roller screw rod pair |
| CN105782381B (en) * | 2016-05-24 | 2018-01-30 | 江苏瑞安特机械集团有限公司 | A kind of planetary roller screw auxiliary |
| CN111779810A (en) * | 2020-06-01 | 2020-10-16 | 北京精密机电控制设备研究所 | Planetary roller screw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2628807Y (en) | Planetary roller screw auxiliary | |
| CN2887474Y (en) | Single transmission axle three-roller Y-shaped adjustable rolling mill | |
| CN1907615A (en) | Toroid worm numerical control machine capable of making up center distance | |
| CN102900821A (en) | Planetary roller and lead screw pair | |
| CN110479837A (en) | A kind of vertical three pairs of wheels active shear spinning equipment of full electric servo | |
| CN102287503B (en) | Rotate direct acting switching mechanism | |
| CN205315617U (en) | Ball worm reducer | |
| CN110479836B (en) | Spin forming method for part with regular polygonal section | |
| CN207687279U (en) | A kind of planetary roller screw | |
| CN1719069A (en) | Zero gap speed changing mechanism | |
| CN1077149A (en) | Elliptic gear is shaved, honing principle and lathe thereof | |
| CN2706258Y (en) | Automatic centering center rest for lathe | |
| CN1019920C (en) | Finely and widely adjusting means of microscope | |
| CN213655628U (en) | Planetary roller screw with novel roller structure | |
| CN114623217A (en) | Annular tooth roller screw rod transmission mechanism | |
| CN202100673U (en) | Planetary roller lead screw | |
| CN112460217A (en) | Novel planet roller lead screw | |
| CN2260923Y (en) | Power-transmission ball screw pairs | |
| CN109623871B (en) | Active-passive rigidity-variable joint and rigidity adjusting method thereof | |
| CN1032682C (en) | Roll pass cylindrical grinding method and roll pass riding machine | |
| CN110701269B (en) | Roller of planetary roller screw pair for improving roller stress | |
| CN202659831U (en) | Novel planet roller screw pair | |
| CN1584247A (en) | Multihead threading reinforcing bar joint, producer and producing method thereof | |
| CN212389705U (en) | Worm pair | |
| CN2429687Y (en) | Speed reducer for worm-gears transmission |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130729 Granted publication date: 20040728 |