CN102734417A - Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides - Google Patents
Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides Download PDFInfo
- Publication number
- CN102734417A CN102734417A CN2012102063434A CN201210206343A CN102734417A CN 102734417 A CN102734417 A CN 102734417A CN 2012102063434 A CN2012102063434 A CN 2012102063434A CN 201210206343 A CN201210206343 A CN 201210206343A CN 102734417 A CN102734417 A CN 102734417A
- Authority
- CN
- China
- Prior art keywords
- roller
- nut
- major axis
- ring
- pressure ring
- 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.)
- Granted
Links
Images
Landscapes
- Transmission Devices (AREA)
- Friction Gearing (AREA)
Abstract
The invention discloses a mechanical device through which rotary motion and linear motion can be mutually transformed, in particular relates to a single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides. According to the mechanism, a contraction disk component for radially compacting a long shaft roller 7 and a hollow roller 8 is arranged at the end of the roller consisting of the long shaft roller 7 and the hollow roller 8, and threads of the long shaft roller 7 and the hollow roller 8 are tightly clamped with threads of a screw rod 14 and a nut 2 respectively, so that the axial clearances on the two sides can be simultaneously eliminated. By the mechanism, the center distance and the bearing capacity cannot be changed, and the roller can be conveniently assembled; the axial clearances can be adjusted through the contraction disk at the shaft end, so that the axial clearances can be adjusted conveniently again after screws work for a long term and are worn; an idling or skidding phenomenon caused by the axial clearances is solved; the transmission accuracy is effectively improved, thread meshing impact is reduced, the bearing capacity is guaranteed, and the overall transmission efficiency is improved.
Description
Technical field
The invention belongs to a kind of can be with the mechanical device that rotatablely moves and transform each other with straight line motion.
Existing technology
The planetary roller screw mechanism be a kind of can be with the mechanical device that rotatablely moves and transform each other with straight line motion.Existing straight line actuation mechanism commonly used mainly is a ball screw.The planetary roller leading screw is owing to adopted screwed roller to replace ball as the power transmission unit; Compare with ball screw; Its power transmission unit has bigger contact radius and more point of contact; Therefore all be superior to ball screw at aspects such as positional accuracy, load rating, rigidity, speed, life-spans, be widely used in the occasion that the army and the people fields such as Aeronautics and Astronautics, precision machine tool and food package need the linear servo start in recent years.
Though the planetary roller leading screw has above-mentioned numerous advantage, the subject matter that exists is slipping, and this is that thread engagement exists axial clearance to cause, and can influence transmission accuracy and increase wearing and tearing, especially high speed to-and-fro motion meeting to increase mesh impact.
The main method that addresses this problem at present is to adopt double nut; Through Flexible element two nut axial pretightenings are connected; Eliminating axial clearance, but this method only needs except the axial clearance between roller and nut, and the axial clearance between leading screw and roller still exists; The slipping problem is just slowed down, and does not eliminate at all.And the effect of double nut pretension is: a nut is as pre-load nut; A nut is as bearing screwed cap; Though double nut can be eliminated the axial clearance of roller and nut side; But because the existence of pretightening force makes bearing screwed cap except bearing original thrust load, also to bear the pretightening force of increase, cause bearing screwed cap to damage if thrust load increase or pretightening force are crossed big city.Document " Elastic Elements in Roller-Screw Mechanisms " has proposed a kind of method of eliminating leading screw and roller axial clearance; Promptly adopt a kind of annular spring, be installed on the slotted nut, compress leading screw, roller and nut through radial force; The resilient separation device is installed on the roller spindle nose simultaneously; Under the acting in conjunction of annular spring and separator, reach the purpose of eliminating axial clearance, but this method active force is radially; Can cause leading screw and roller off-design engaging position, change centre distance, reduce bearing capacity and transmission accuracy.Therefore; Need a kind of new structure and can eliminate leading screw and roller side and roller and nut side shaft simultaneously to the gap; Reach the purpose that solves slipping, and make each parts not bear unnecessary load, so guaranteed this mechanism can reliable operation, can not occur too early damaging.
Summary of the invention
The objective of the invention is: to solving the slipping problem; A kind of novel single nut planetary roller screw mechanism that can eliminate roller and nut side and roller and leading screw side shaft to the gap is simultaneously proposed; Purpose is the slipping problem that when not increasing additional load, solves, and improves transmission accuracy, reduces the thread engagement impact, reduces vibration noise with this.This mechanism is applicable to big stroke, high thrust, the linear servo occasion higher to positional accuracy, vibratory impulse and noise requirements.
Technological scheme of the present invention is: a kind of single nut planetary roller screw mechanism that can eliminate both sides axial clearance simultaneously comprises planetary roller lead screw pair transmitting assemblies and axial gap adjusting component two-part;
Consult Fig. 1, said planetary roller lead screw pair transmitting assemblies comprises leading screw 14, major axis roller 7, hollow roller 8, nut 1, left side ring gear 5, right side ring gear 11, left side planet carrier 4, right side planet carrier 12, left side shaft end ring 3 and right side shaft end ring 13;
Said major axis roller 7 has the identical single screw thread of rotation direction with hollow roller 8; The optical axis end of the major axis roller 7 hollow roller 8 of packing into forms a roller; Some said major axis rollers 7 place respectively on left side planet carrier 4 and the right side planet carrier 12 with the roller two ends that hollow roller 8 is formed; Circumferentially be distributed in the toroidal cavity between leading screw 14 and the nut 2, form single nut planetary roller screw mechanism; Major axis roller 7 and hollow roller 8 and leading screw 14 screw threads and nut 2 thread engagement; Relative rotation adjustment through major axis roller 7 and hollow roller 8; Make that leading screw 14 and nut 2 are axially clamped; The right side curved surface while of major axis roller 7 worm tooths does not have the gap engagement with the left side curved surface of leading screw 14 and nut 2 worm tooths, and the left side curved surface while of hollow roller 8 worm tooths does not have the gap with the right side curved surface of leading screw 14 and nut 2 worm tooths and meshes;
In order to prevent that major axis roller 7 and hollow roller 8 from deflection taking place when stressed; The roller two end portions screw thread that major axis roller 7 and hollow roller 8 are formed is cut into straight-tooth; The straight-tooth at two ends meshes with left side ring gear 5 and right side ring gear 11 inwall straight-tooth respectively, with roller axis and leading screw 14 parallel axes that guarantee that major axis roller 7 and hollow roller 8 are formed; Left side ring gear 5 is respectively charged into the nut two ends with right side ring gear 11 through interference fit, and is fixed by positioning dowel; Left side shaft end ring 3 is respectively charged in the groove of left side ring gear 5 and right side ring gear 11 with right side shaft end ring 13, plays the axially locating effect and prevents that left side planet carrier 4 from coming off with right side planet carrier 12.
Said axial gap adjusting component comprise lay respectively at major axis roller 7 and hollow roller 8 peripheries about two shrink disk assemblies 10; Consult Fig. 2, Fig. 3, Fig. 4, said shrink disk assembly 10 is formed with contraction pressure ring II10-2 by shrinking pressure ring I10-1; Shrink pressure ring I10-1 and be the step ring-type with contraction pressure ring II 10-2, its big end and small end are skew wall; Shrinking the outer skew wall a of the big end of pressure ring I10-1 matches with the interior skew wall d of the big end of contraction pressure ring II 10-2; Shrinking the outer skew wall b of pressure ring I10-1 small end matches with the interior skew wall c of contraction pressure ring II 10-2 small end; Shrinking pressure ring I10-1 is connected through some axial connecting bolt 10-3 that circumferentially are uniformly distributed with contraction pressure ring II 10-2; About tightening during the connecting bolt 10-3 of two shrink disk assemblies 10; The inclined-plane a that shrinks pressure ring 10-1 and b respectively with inclined-plane d and the c generation effect of contraction pressure ring 10-2; Radially compress major axis roller 7 and hollow roller 8, make it when leading screw 14 transfer function power, keep being synchronized with the movement.
The said a kind of single nut planetary roller screw mechanism working principle that can eliminate both sides axial clearance simultaneously is: leading screw 14 is live axle; When leading screw 14 turns clockwise; Driving major axis roller 7 rotates with hollow roller 8 synchronously; Leading screw 14 worm tooths left sides curved surface respectively simultaneously with the right side curved surface engagement of major axis roller 7 and hollow roller 8 worm tooths, major axis roller 7 and hollow roller 8 are rotated counterclockwise around self axis in revolution clockwise, promote nut 2 along axis straight line motion left.When should leading screw 14 being rotated counterclockwise, major axis roller 7 and hollow roller 8 turn clockwise around self axis in revolution counterclockwise, promote nut 2 along axis straight line motion to the right.Nut 2 moving direction are only relevant with nut 2 rotation directions with leading screw 14, major axis roller 7, hollow roller 8.
The invention has the beneficial effects as follows: this mechanism adopts the shrink disk assembly radially major axis roller 7 and hollow roller 8 to be compressed in major axis roller 7 and the roller end that hollow roller 8 is formed; Major axis roller 7 will clamp with leading screw 14 screw threads and nut 2 screw threads respectively with hollow roller 8 screw threads; Thereby solved the problem of eliminating planetary roller screw mechanism both sides axial clearance simultaneously; The method can not change centre distance and change bearing capacity, and is convenient to the roller installation.This method also can be carried out the axial clearance adjustment through the axle head shrink disk, so that screw thread carries out the axial clearance adjustment after wearing and tearing through long-term work once more.
This mechanism has eliminated the axial clearance between roller and nut and roller and leading screw simultaneously; Solved because the slipping problem that axial clearance causes effectively raises transmission accuracy, reduces the thread engagement impact, guarantees bearing capacity and improve whole transmission efficiency.In addition, the method for elimination axial clearance of the present invention also can be used for other straight line actuation mechanism, for example ball screws.
Description of drawings
Fig. 1 is a kind of single nut planetary roller screw mechanism constitutional diagram that can eliminate both sides axial clearance simultaneously that the present invention proposes;
Fig. 2 is shrink disk assembly 10 assembling schematic representation figure;
Fig. 3 shrinks pressure ring I10-1 structural representation in the shrink disk assembly 10;
Fig. 4 shrinks pressure ring II 10-2 structural representation in the shrink disk assembly 10;
Wherein: 1-nut bolt hole; The 2-nut; 3-left side shaft end ring; 4-left side planet carrier; 5-left side ring gear; The 6-left side gear teeth; 7-major axis roller; The hollow roller of 8-; The 9-right side gear teeth; 10-shrink disk assembly; 10-1-shrinks pressure ring I; 10-2-shrinks the pressure ring II; The 10-3-connecting bolt; 11-right side ring gear; 12-right side planet carrier; 13-right side shaft end ring; The 14-leading screw; 15-positioning dowel hole; The 16-pin hole.
The practical implementation instance
The single nut planetary roller screw mechanism that can eliminate both sides axial clearance simultaneously in the present embodiment comprises planetary roller lead screw pair transmitting assemblies and axial gap adjusting component two-part;
Planetary roller lead screw pair transmitting assemblies comprises leading screw 14, major axis roller 7, hollow roller 8, nut 1, left side ring gear 5, right side ring gear 11, left side planet carrier 4, right side planet carrier 12, left side shaft end ring 3 and right side shaft end ring 13; Nut 1 in the present embodiment is right-handed thread with leading screw 14;
The single screw thread that said major axis roller 7 and hollow roller 8 have the dextrorotation rotation direction; The optical axis end of the major axis roller 7 hollow roller 8 of packing into forms a roller; The roller two ends of 6 groups of said major axis rollers 7 and hollow roller 8 compositions place respectively on left side planet carrier 4 and the right side planet carrier 12; Circumferentially be distributed in the toroidal cavity between leading screw 14 and the nut 2, form single nut planetary roller screw mechanism; Major axis roller 7 and hollow roller 8 and leading screw 14 screw threads and nut 2 thread engagement; Relative rotation adjustment through major axis roller 7 and hollow roller 8; Make that leading screw 14 and nut 2 are axially clamped; The right side curved surface while of major axis roller 7 worm tooths does not have the gap engagement with the left side curved surface of leading screw 14 and nut 2 worm tooths, and the left side curved surface while of hollow roller 8 worm tooths does not have the gap with the right side curved surface of leading screw 14 and nut 2 worm tooths and meshes;
In order to prevent that major axis roller 7 and hollow roller 8 from deflection taking place when stressed; The roller two end portions screw thread that major axis roller 7 and hollow roller 8 are formed is cut into straight-tooth; Form the left side gear teeth 6 and the right side gear teeth 9 respectively; The left side gear teeth 6 mesh with left side ring gear 5 and right side ring gear 11 inwall straight-tooth respectively with the right side gear teeth 9, with roller axis and leading screw 14 parallel axes that guarantee that major axis roller 7 and hollow roller 8 are formed; Left side ring gear 5 is respectively charged into nut 2 two ends with right side ring gear 11 through interference fit, and through being positioned at the positioning dowel hole 15 on the nut 2, and is positioned at left side ring gear 5 and positions dowel fixes with pin hole 16 on the right side ring gear 11; Left side shaft end ring 3 is respectively charged in the groove of left side ring gear 5 and right side ring gear 11 with right side shaft end ring 13, plays the axially locating effect and prevents that left side planet carrier 4 from coming off with right side planet carrier 12.
Said axial gap adjusting component comprise lay respectively at major axis roller 7 and hollow roller 8 peripheries about two shrink disk assemblies 10; Consult Fig. 2, Fig. 3, Fig. 4, said shrink disk assembly 10 is formed with contraction pressure ring II 10-2 by shrinking pressure ring I10-1; Shrink pressure ring I10-1 and be the step ring-type with contraction pressure ring II 10-2, its big end and small end are skew wall; Shrinking the outer skew wall a of the big end of pressure ring I10-1 matches with the interior skew wall d of the big end of contraction pressure ring II 10-2; Shrinking the outer skew wall b of pressure ring I10-1 small end matches with the interior skew wall c of contraction pressure ring II 10-2 small end; Shrinking pressure ring I10-1 is connected through 6 axial connecting bolt 10-3 that circumferentially are uniformly distributed with contraction pressure ring II 10-2; About tightening during the connecting bolt 10-3 of two shrink disk assemblies 10; The inclined-plane a that shrinks pressure ring I10-1 and b respectively with inclined-plane d and the c generation effect of contraction pressure ring II 10-2; Radially compress major axis roller 7 and hollow roller 8, make it when leading screw 14 transfer function power, keep being synchronized with the movement.
Above-mentioned installation process and the working procedure that can eliminate the single nut planetary roller screw mechanism of both sides axial clearance simultaneously distinguished as follows:
During installation; At first left side ring gear 5 and right side ring gear 11 are respectively charged into nut 2 two ends and alignment; By positioning dowel hole 15 and pin hole 16 join do the location after; Planet carrier 4 and left side shaft end ring 3 on the left of packing into; To be sleeved on together group leader's axle roller 7 and hollow roller 8 and shrink disk assembly 10 then in advance and pack in the hole of planet carrier 4, when rotating major axis roller 7 respectively and make two rollers and nut 2 screw thread correct engagement with hollow roller 8, the left side gear teeth 6 and the right side gear teeth 9 respectively with left side ring gear 5 and right side ring gear 11 correct engagement; Prepare the connecting bolt 10-3 of the shrink disk assembly 10 of screwing behind the position, compress major axis roller 7 and hollow roller 8.Employing is packed into quadrat method and is remained roller and pack into right side planet carrier 12 and right side shaft end ring 13.At last leading screw 14 is screwed in the roller that is uniformly distributed along the circumference.During adjustment axial clearance; Unclamp the connecting bolt 10-3 of shrink disk assembly 10; Remove the impacting force of 8 of major axis roller 7 and hollow rollers, rotation major axis roller 7 or hollow roller 8 make it compress leading screw 14 and nut 2 simultaneously; The connecting bolt 10-3 that screws once more this moment compresses major axis roller 7 and hollow roller 8, and at this moment the axial clearance between roller and leading screw 14, roller and the nut 2 is all eliminated.
During work, leading screw 14 is a live axle, when leading screw 14 turns clockwise; Driving major axis roller 7 rotates with hollow roller 8 synchronously; Leading screw 14 worm tooths left sides curved surface respectively simultaneously with the right side curved surface engagement of major axis roller 7 and hollow roller 8 worm tooths, major axis roller 7 and hollow roller 8 are rotated counterclockwise around self axis in revolution clockwise, promote nut 2 along axis straight line motion left; Have on the nut 2 to connect the nut bolt hole 1 that load is used, thereby drive load produces straight line motion left.When should leading screw 14 being rotated counterclockwise, major axis roller 7 and hollow roller 8 turn clockwise around self axis in revolution counterclockwise, promote nut 2 along axis straight line motion to the right, thereby drive load produce straight line motion to the right.
Claims (1)
1. the single nut planetary roller screw mechanism that can eliminate both sides axial clearance simultaneously comprises planetary roller lead screw pair transmitting assemblies and axial gap adjusting component two-part;
Said planetary roller lead screw pair transmitting assemblies comprises leading screw (14), major axis roller (7), hollow roller (8), nut (1), left side ring gear (5), right side ring gear (11), left side planet carrier (4), right side planet carrier (12), left side shaft end ring (3) and right side shaft end ring (13);
Said major axis roller (7) has the identical single screw thread of rotation direction with hollow roller (8); The optical axis end of major axis roller (7) the hollow roller (8) of packing into forms a roller; The roller two ends that some said major axis rollers (7) and hollow roller (8) are formed place respectively on left side planet carrier (4) and the right side planet carrier (12); Circumferentially be distributed in the toroidal cavity between leading screw (14) and the nut (2), form single nut planetary roller screw mechanism; Major axis roller (7) and hollow roller (8) and leading screw (14) screw thread and nut (2) thread engagement; Relative rotation adjustment through major axis roller (7) and hollow roller (8); Make that leading screw (14) and nut (2) are axially clamped; The right side curved surface while of major axis roller (7) worm tooth does not have the gap engagement with the left side curved surface of leading screw (14) and nut (2) worm tooth, and the left side curved surface while of hollow roller (8) worm tooth does not have the gap engagement with the right side curved surface of leading screw (14) and nut (2) worm tooth;
The roller two end portions screw thread that major axis roller (7) and hollow roller (8) are formed is cut into straight-tooth; The straight-tooth at two ends meshes with left side ring gear (5) and right side ring gear (11) inwall straight-tooth respectively, with roller axis and leading screw (14) parallel axes that guarantees that major axis roller (7) and hollow roller (8) are formed; Left side ring gear (5) and right side ring gear (11) are respectively charged into the nut two ends through interference fit, and are fixed by positioning dowel; Left side shaft end ring (3) and right side shaft end ring (13) are respectively charged in the groove of left side ring gear (5) and right side ring gear (11), play the axially locating effect and prevent that left side planet carrier (4) and right side planet carrier (12) from coming off;
Said axial gap adjusting component comprise lay respectively at major axis roller (7) and hollow roller (8) periphery about two shrink disk assemblies (10); Said shrink disk assembly (10) is by shrinking pressure ring I (10-1) and shrinking pressure ring II (10-2) and form; Contraction pressure ring I (10-1) and contraction pressure ring II (10-2) are the step ring-type, and its big end and small end are skew wall; Shrinking the big outer skew wall a of end of pressure ring I (10-1) matches with the interior skew wall d of the big end of contraction pressure ring II (10-2); Shrinking the outer skew wall b of pressure ring I (10-1) small end matches with the interior skew wall c of contraction pressure ring II (10-2) small end; Shrinking pressure ring I (10-1) is connected through some axial connecting bolts (10-3) that circumferentially are uniformly distributed with contraction pressure ring II (10-2); About tightening during the connecting bolt (10-3) of two shrink disk assemblies (10); The inclined-plane a that shrinks pressure ring (10-1) and b respectively with the inclined-plane d and the c generation effect of contraction pressure ring (10-2); Radially compress major axis roller (7) and hollow roller (8), make it when leading screw (14) transfer function power, keep being synchronized with the movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206343.4A CN102734417B (en) | 2012-06-21 | 2012-06-21 | Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210206343.4A CN102734417B (en) | 2012-06-21 | 2012-06-21 | Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734417A true CN102734417A (en) | 2012-10-17 |
| CN102734417B CN102734417B (en) | 2014-10-29 |
Family
ID=46990465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210206343.4A Active CN102734417B (en) | 2012-06-21 | 2012-06-21 | Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102734417B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847860A (en) * | 2014-02-14 | 2015-08-19 | Skf公司 | Roller screw, mounting method and tool for fitting rollers in such a roller screw |
| CN104847861A (en) * | 2014-02-14 | 2015-08-19 | Skf公司 | Roller screw, mounting method and tool for fitting rollers in such a roller screw |
| CN104901474A (en) * | 2015-05-28 | 2015-09-09 | 钱德林 | Novel large-thrust servo electric cylinder |
| CN106763602A (en) * | 2017-01-16 | 2017-05-31 | 程春林 | A kind of multiple thread planetary spindle drive |
| CN108266510A (en) * | 2018-03-21 | 2018-07-10 | 苏州阳林滚动机械科技有限公司 | A kind of circulating planetary roller screw of straight trough retainer |
| CN108488342A (en) * | 2018-02-11 | 2018-09-04 | 北京航天自动控制研究所 | A kind of planetary roller screw pair having both vibration damping and refrigerating function |
| CN110103018A (en) * | 2018-12-05 | 2019-08-09 | 哈尔滨工业大学 | PWG type differential type planetary roller screw assembly tool and its assembly method |
| CN111859715A (en) * | 2020-08-05 | 2020-10-30 | 西北工业大学 | Secondary planet roller screw optimization design method based on structural parameters |
| CN112710538A (en) * | 2020-12-18 | 2021-04-27 | 济南新路昌试验机有限公司 | Electronic universal testing machine |
| CN113757349A (en) * | 2021-11-10 | 2021-12-07 | 爱磁科技(天津)有限公司 | Displacement planet carrier system and planetary transmission device thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3585869A (en) * | 1968-06-27 | 1971-06-22 | Skf Svenska Kullagerfab Ab | Screw and socket mechanism |
| CN2628807Y (en) * | 2003-07-29 | 2004-07-28 | 西南交通大学 | Planetary roller screw auxiliary |
| CN1717553A (en) * | 2003-04-24 | 2006-01-04 | 丰田自动车株式会社 | Planetary differential screw-type rotational motion/linear motion converter |
| JP2007211922A (en) * | 2006-02-10 | 2007-08-23 | Nsk Ltd | Roller screw device |
| CN102182806A (en) * | 2011-04-29 | 2011-09-14 | 黄溧震 | Planetary roller screw |
-
2012
- 2012-06-21 CN CN201210206343.4A patent/CN102734417B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3585869A (en) * | 1968-06-27 | 1971-06-22 | Skf Svenska Kullagerfab Ab | Screw and socket mechanism |
| CN1717553A (en) * | 2003-04-24 | 2006-01-04 | 丰田自动车株式会社 | Planetary differential screw-type rotational motion/linear motion converter |
| CN2628807Y (en) * | 2003-07-29 | 2004-07-28 | 西南交通大学 | Planetary roller screw auxiliary |
| JP2007211922A (en) * | 2006-02-10 | 2007-08-23 | Nsk Ltd | Roller screw device |
| CN102182806A (en) * | 2011-04-29 | 2011-09-14 | 黄溧震 | Planetary roller screw |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847860A (en) * | 2014-02-14 | 2015-08-19 | Skf公司 | Roller screw, mounting method and tool for fitting rollers in such a roller screw |
| CN104847861A (en) * | 2014-02-14 | 2015-08-19 | Skf公司 | Roller screw, mounting method and tool for fitting rollers in such a roller screw |
| CN104847861B (en) * | 2014-02-14 | 2019-07-09 | Skf公司 | Roller screw and the Method and kit for that roller is assembled in this roller screw |
| CN104901474A (en) * | 2015-05-28 | 2015-09-09 | 钱德林 | Novel large-thrust servo electric cylinder |
| CN104901474B (en) * | 2015-05-28 | 2017-09-22 | 嘉兴市海创通用设备有限公司 | High thrust servo electric cylinders |
| CN106763602A (en) * | 2017-01-16 | 2017-05-31 | 程春林 | A kind of multiple thread planetary spindle drive |
| CN108488342A (en) * | 2018-02-11 | 2018-09-04 | 北京航天自动控制研究所 | A kind of planetary roller screw pair having both vibration damping and refrigerating function |
| CN108266510A (en) * | 2018-03-21 | 2018-07-10 | 苏州阳林滚动机械科技有限公司 | A kind of circulating planetary roller screw of straight trough retainer |
| CN110103018A (en) * | 2018-12-05 | 2019-08-09 | 哈尔滨工业大学 | PWG type differential type planetary roller screw assembly tool and its assembly method |
| CN110103018B (en) * | 2018-12-05 | 2021-06-25 | 哈尔滨工业大学 | PWG type differential planetary roller screw assembly tool and assembly method thereof |
| CN111859715A (en) * | 2020-08-05 | 2020-10-30 | 西北工业大学 | Secondary planet roller screw optimization design method based on structural parameters |
| CN111859715B (en) * | 2020-08-05 | 2022-02-11 | 西北工业大学 | Secondary planet roller screw optimization design method based on structural parameters |
| CN112710538A (en) * | 2020-12-18 | 2021-04-27 | 济南新路昌试验机有限公司 | Electronic universal testing machine |
| CN112710538B (en) * | 2020-12-18 | 2022-09-23 | 济南新路昌试验机有限公司 | Electronic universal testing machine |
| CN113757349A (en) * | 2021-11-10 | 2021-12-07 | 爱磁科技(天津)有限公司 | Displacement planet carrier system and planetary transmission device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102734417B (en) | 2014-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102734417B (en) | Single-nut planetary roller screw rod mechanism capable of simultaneously eliminating axial clearances on two sides | |
| CN102628500B (en) | Planet roller screw mechanism capable of eliminating axial gaps | |
| CN103089956B (en) | A kind of roller screw drive linear actuator | |
| CN106230186A (en) | A kind of set has the hollow type harmonic speed reducer of motor | |
| CN110886835B (en) | Anti-backlash mechanism based on low-speed worm gear and worm transmission pair | |
| CN104565252A (en) | Dual-nut ball screw assembly with controllable pre-tightening force | |
| CN106931123A (en) | A kind of planetary roller screw with bidirectional self-locking function | |
| CN204512340U (en) | The double nut ball screw pair that a kind of pretightening force is controlled | |
| CN202056209U (en) | Adjustment structure for tapered roller bearings | |
| CN110107664A (en) | A kind of big L/D ratio nut inverse type planetary roller screw | |
| CN110103018B (en) | PWG type differential planetary roller screw assembly tool and assembly method thereof | |
| CN102366847B (en) | Improved structure of working platform in gear processing machine | |
| CN102032320A (en) | Zero-return difference worm gear speed reducer for industrial robot | |
| CN202343961U (en) | Electric main shaft for lathe | |
| CN211901481U (en) | Rolling friction trapezoidal lead screw | |
| CN109623871B (en) | Active-passive rigidity-variable joint and rigidity adjusting method thereof | |
| CN201913645U (en) | Rotating joint module of single DOF (degree of freedom) robot | |
| CN106969107A (en) | A kind of eccentric wheel rotating mechanism | |
| CN103603932A (en) | Real-time anti-backlash variable-radius corrugated-toothed reducer | |
| CN108468771B (en) | Pre-tightening force self-adjusting device of ball screw nut pair | |
| RU137644U1 (en) | LINEAR MOVEMENT ELECTRIC DRIVE | |
| CN100566082C (en) | High performance electromechanical driving mechanism | |
| CN101852281B (en) | Conical bearing screw-drive mechanism | |
| CN205331342U (en) | Ball with adjustable pretightning force structure | |
| CN209811371U (en) | Double-lead-screw driving engraving machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190514 Address after: Room 404, Material Building, Northwest Polytechnic University, 127 Youyi West Road, Xi'an City, Shaanxi Province, 710072 Patentee after: Xi'an Northwestern Polytechnical University Asset Management Co., Ltd. Address before: 710072 No. 127 Youyi West Road, Shaanxi, Xi'an Patentee before: Northwestern Polytechnical University |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190827 Address after: 710072 Room B814, Air Building, Northwest Polytechnic University, 127 Youyi West Road, Xi'an City, Shaanxi Province Patentee after: Shanghai Dingbai Precision Mechanical and Electrical Co., Ltd. Address before: Room 404, Material Building, Northwest Polytechnic University, 127 Youyi West Road, Xi'an City, Shaanxi Province, 710072 Patentee before: Xi'an Northwestern Polytechnical University Asset Management Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 400 Fangchun Road, Pudong New Area Free Trade Pilot Area, Shanghai, 200120 Patentee after: Shanghai Dingbai Precision Mechanical and Electrical Co.,Ltd. Address before: Room b814, aviation building, Northwest University of technology, 127 Youyi West Road, Xi'an, Shaanxi 710072 Patentee before: Shanghai Dingbai Precision Mechanical and Electrical Co.,Ltd. |