CN202100673U - Planetary roller lead screw - Google Patents
Planetary roller lead screw Download PDFInfo
- Publication number
- CN202100673U CN202100673U CN2011201327563U CN201120132756U CN202100673U CN 202100673 U CN202100673 U CN 202100673U CN 2011201327563 U CN2011201327563 U CN 2011201327563U CN 201120132756 U CN201120132756 U CN 201120132756U CN 202100673 U CN202100673 U CN 202100673U
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- CN
- China
- Prior art keywords
- roller
- leading screw
- nut
- screw
- lead screw
- 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 - Fee Related
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Abstract
The utility model provides a planetary roller lead screw, which is simple and compact in structure, large in carrying capacity, not easy to abrade, wide in thread pitch scope, capable of achieving high-speed operation and high in reliability. The planetary roller lead screw comprises a lead screw, one or a plurality of rollers, two roller planetary retaining frames, a nut and two limiting spacer rings. The planetary roller lead screw is small in axial clearance, high in transmission efficiency and capable of achieving high-speed transmission from a tiny screw pitch to a super helical pitch, can achieve not only conversion between rotating motion and linear motion, but also a fact that the lead screw is in a high-speed rotation and the nut is in a rotation motion with corresponding speed ratio. Thread forms of the lead screw are all in a shape of a circular arc to bring convenience in manufacture.
Description
Technical field:
The utility model relates to a kind of a kind of novel planetary ball screw that is widely used in numerical control machine tool, control executive system, navigation system, plastics machinery, military project, high-mechanic linear motion system, measuring equipment, high speed rotary motion etc.
Background technique:
At present, common lead screw pair mainly contains two types: one type is friction pair leading screws such as trapezoidal threaded lead screw, square threaded form leading screw, and another kind of is ball screw rolling pair leading screw.The planetary roller leading screw is a kind of novel rolling pair leading screw.The friction pair leading screw carries big, but efficient is very low, and low-response can not be used for highi degree of accuracy, high-speed occasion.The ball screw precision is high, and efficient is high, and response is fast, be widely used in all kinds of numerical control machine tools, but the ball screw bearing capacity is little poor rigidity.The relative ball screw of planetary roller leading screw, bearing capacity improves greatly, efficient high (about 90%), precision is close, and the life-span is 5 to 10 times of ball screw, is applied in the occasion of critical.
The patent about the planetary roller leading screw of having declared in China has two, is respectively:
200310106438.X number patent application discloses a kind of planetary V thread screw roller screw pair; This planetary V thread screw roller screw pair is directly will rotatablely move to be converted into straight line motion; In being applicable to, the occasion of big helical pitch, can the above high speed operation of 5000r/min.
200720034209.5 number patent discloses a kind of circulation planetary roller leading screw, this circulation planetary roller leading screw also is directly will rotatablely move to be converted into straight line motion, is applicable to the occasion of little helical pitch, is not suitable for high speed operation.
Summary of the invention:
The utility model proposes a kind of novel planetary roller screw structure on the basis of the shortcoming that overcomes above two kinds of planetary roller leading screws, this novel ball screw can be realized the application of small helical pitch to super large helical pitch; Can realize high speed operation; The tooth form of leading screw adopts arc-shaped structure simultaneously, so that processing.
The purpose of the utility model is achieved in that
The utility model comprises: leading screw, nut; And be arranged at the one or more rollers between leading screw and the nut; It is characterized in that: further comprising two planet retainers and two spacing spacer rings; A described roller or a plurality of rollers two ends are arranged at respectively in the retainer of both sides, and locate through the spacing spacer ring of both sides, and the tooth form of said leading screw adopts circular arc.
The screw thread of leading screw is a single line or multi-thread; The helical pitch of leading screw and nut is identical or different; The screw thread of roller is single helical pitch or two kinds of helical pitches; Wherein the tooth form of leading screw adopts circular arc.When roller was single helical pitch, roller, leading screw, nut three's tooth profile parameter was identical.When roller was two kinds of helical pitches, a kind of thread form parameter of roller was identical with leading screw, and the another kind of thread form parameter of roller is identical with nut.Roller is positioned in the middle of leading screw and the nut, does the rolling screw motion with leading screw and nut respectively.Roller is distributed in along the leading screw direction of axis line around the leading screw, and two ends place respectively in the roller planet retainer.Planet carrier is made two roller planet retainers respectively with spacing spacer ring location.
When leading screw rotated, roller was done planetary motion round leading screw according to the planetary motion rule, also did corresponding spiral motion according to the spiral motion rule; Simultaneously, roller is meshed with the helix of nut, so the characteristics of motion between roller and the nut also must meet planetary motion rule and spiral motion rule.Therefore, the motion of roller has driven nut and has done corresponding motion, that is: when nut not being done restriction, existing the rotatablely moving of nut also has straight line motion; If rotatablely moving of restriction nut, then the nut moving linearly has been realized the motion that nut is set with respect to the leading screw work thus.
The utility model is compared existing technology and is had following advantage:
1, at first, the utility model planetary roller leading screw and existing planetary roller leading screw structure compared are simpler, component still less, machining control is easier, simultaneously the tooth form of leading screw adopts circular arc, with convenient processing.
2, secondly, the utility model has been realized two kinds of motion output forms of nut, and when leading screw rotated, nut can be exported the output that also can rotatablely move by straight line motion.And the planetary roller leading screw of these two kinds of structures of circulation planetary roller leading screw of the planetary V thread screw roller screw pair of 200310106438.X patent application and No. 200720034209.5 patents has only and is converted into straight-line a kind of way of output with rotatablely moving.
3, the 3rd; 200310106438.X the planetary roller leading screw helical pitch scope of planetary V thread screw roller screw pair structure be in, big helical pitch; 200720034209.5 the helical pitch scope of the circulation planetary roller leading screw of number patent is little helical pitch, the utility model has covered both helical pitch scopes with regard to letter with a kind of helical pitch scope of structure.
4, the 4th, the utility model can be realized the transmission of small helical pitch (pitch) high speed, can reach the above high speed operation of 5000r/min.And the planetary roller leading screw of the planetary V thread screw roller screw pair structure of 200310106438.X patent application does not have little helical pitch; 200720034209.5 though the circulation planetary roller leading screw of number patent has little helical pitch; But can not run up, can not realize small helical pitch.
5, the 5th, the utility model can be realized the transmission of super large helical pitch high speed, can reach the above high speed operation of 5000r/min.And the planetary roller leading screw of the planetary V thread screw roller screw pair structure of 200310106438.X patent application can be realized the transmission of big helical pitch high speed; But can not realize the transmission of super large helical pitch high speed, the circulation planetary roller leading screw of No. 200720034209.5 patents can only be realized low speed transmission in the little helical pitch.
The utility model is compared the existing technology structure has following difference:
1, compare with the planetary V thread screw roller screw pair of 200310106438.X patent application, the utility model nut does not have internal tooth, and roller does not have external tooth, and roller has single helical pitch or two kinds of helical pitches, and the helical pitch of leading screw and nut can be different; 200310106438.X the nut of the planetary V thread screw roller screw pair of number patent application has internal tooth, roller has external tooth, and roller has only a kind of single helical pitch, and leading screw is necessary identical with the helical pitch of nut.
2, compare with the circulation planetary roller leading screw of No. 200720034209.5 patents, two roller planet retainers are inserted at the utility model roller two ends, and roller has two kinds of helical pitches, does not have the cage cover, do not have the cam gland, and roller does not move axially; 200720034209.5 the circulation planetary roller leading screw of number patent does not have roller planet retainer, and the cage cover is arranged, and the cam gland is arranged, roller has a kind of helical pitch, and roller moves axially, and relies on cam gland cycle reset campaign.
Description of drawings:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the schematic cross-section of Fig. 1.
Among Fig. 1: the 1-leading screw; The one or more rollers of 2-; The 3A-first roller planet retainer; The 3B-second roller planet retainer; The 4-nut; The 5A-first spacing spacer ring; The 5B-second spacing spacer ring
Embodiment:
Below in conjunction with accompanying drawing further describing to the utility model.
As shown in the figure; This novel planetary ball screw is made up of leading screw 1, one or more roller 2, the first roller planet retainer 3A, the second roller planet retainer 3B, nut 4, the first spacing spacer ring 5A, the second spacing spacer ring 5B, and first, second roller planet retainer and nut 4, leading screw 1, first, second spacing spacer ring are equipped with the gap.Wherein roller planet retainer is sleeved between leading screw 1 and the nut 4; The end movable set of each roller is in the mounting hole of roller planet retainer; Spacing spacer ring can be fixedly connected on the nut 4.The screw thread of leading screw 1 is single line or multi-thread (three-way to eight lines); The screw thread of one or more rollers 2 (unusual at 6-12 by specification) is one or both helical pitches, and the tooth form of leading screw 1 adopts circular arc, and the worm tooth of leading screw 1 and roller 2 matees each other; Do the rolling screw motion; Roller 2 is distributed in along leading screw 1 direction of axis line around the leading screw 1, and two ends place respectively in the first roller planet retainer 3A, the second roller planet retainer 3B, and one or more rollers 2 are built in the nut 4; The worm tooth of roller 2 and nut 4 matees each other, does the rolling screw motion.The first spacing spacer ring 5A is the spacing first roller planet retainer 3A in nut 4, and the second spacing spacer ring 5B is the spacing second roller planet retainer 3B in nut 4.
Leading screw 1 rotation; Leading screw 1 utilizes friction torque to drive one or more rollers 2 and rotates; One or more rollers 2 are in spinning motion; One or more rollers 2 are made revolution motion with the first roller planet retainer 3A, the second roller planet retainer 3B, and one or more rollers 2 utilize friction torque drive nut 4 to do rotation in the same way.When rotatablely moving of nut 4 is restricted, nut 4 moving linearlies.
Claims (5)
1. planetary roller leading screw; It comprises: leading screw, nut; And be arranged at the one or more rollers between leading screw and the nut, and it is characterized in that: further comprising two planet retainers and two spacing spacer rings, a described roller or a plurality of rollers two ends are arranged at respectively in the retainer of both sides; And the spacing spacer ring that passes through both sides is located the tooth form employing circular arc of said leading screw.
2. planetary roller leading screw according to claim 1 is characterized in that: the screw thread of said leading screw is a single line or multi-thread.
3. planetary roller leading screw according to claim 1 is characterized in that: the helical pitch of said leading screw and nut is identical or different.
4. planetary roller leading screw according to claim 1 is characterized in that: the screw thread of said roller is single helical pitch or two helical pitch.
5. planetary roller leading screw according to claim 1 is characterized in that: roller planet retainer and nut, leading screw, spacing spacer ring are equipped with the gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201327563U CN202100673U (en) | 2011-04-29 | 2011-04-29 | Planetary roller lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201327563U CN202100673U (en) | 2011-04-29 | 2011-04-29 | Planetary roller lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100673U true CN202100673U (en) | 2012-01-04 |
Family
ID=45386687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201327563U Expired - Fee Related CN202100673U (en) | 2011-04-29 | 2011-04-29 | Planetary roller lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100673U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900821A (en) * | 2012-06-28 | 2013-01-30 | 中国北方车辆研究所 | Planetary roller and lead screw pair |
| CN109139846A (en) * | 2017-06-27 | 2019-01-04 | 舍弗勒技术股份两合公司 | Planetary spindle drive, actuator and separation system |
| CN109386581A (en) * | 2018-12-09 | 2019-02-26 | 扬州海通电子科技有限公司 | A kind of closely-pitched self-locking type gear hobbing lead screw |
-
2011
- 2011-04-29 CN CN2011201327563U patent/CN202100673U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900821A (en) * | 2012-06-28 | 2013-01-30 | 中国北方车辆研究所 | Planetary roller and lead screw pair |
| CN109139846A (en) * | 2017-06-27 | 2019-01-04 | 舍弗勒技术股份两合公司 | Planetary spindle drive, actuator and separation system |
| CN109139846B (en) * | 2017-06-27 | 2023-05-12 | 舍弗勒技术股份两合公司 | Planetary roller screw transmission mechanism, actuator and separation system |
| CN109386581A (en) * | 2018-12-09 | 2019-02-26 | 扬州海通电子科技有限公司 | A kind of closely-pitched self-locking type gear hobbing lead screw |
| CN109386581B (en) * | 2018-12-09 | 2024-01-23 | 扬州海通电子科技有限公司 | Self-locking type thread hobbing screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YANGZHOU COVER TRANSMISSION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HUANG LIZHEN Effective date: 20130412 Free format text: FORMER OWNER: WANG JIANBO JU XIAORONG Effective date: 20130412 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Ye Peiqing Inventor after: Huang Lizhen Inventor after: Wang Jianbo Inventor after: Ju Xiaorong Inventor before: Huang Lizhen Inventor before: Wang Jianbo Inventor before: Ju Xiaorong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: HUANG LIZHEN WANG JIANBO JU XIAORONG TO: YE PEIQING HUANG LIZHEN WANG JIANBO JU XIAORONG Free format text: CORRECT: ADDRESS; FROM: 213000 CHANGZHOU, JIANGSU PROVINCE TO: 225000 YANGZHOU, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130412 Address after: 225000 No. 217 West Development Road, Yangzhou, Jiangsu, Yangzhou Patentee after: Yangzhou fortune Drive Technology Co., Ltd. Address before: Jiangsu province Changzhou City Tianning District 213000 Dasan Street No. 111 Fu village before Qunli Village Patentee before: Huang Lizhen Patentee before: Wang Jianbo Patentee before: Ju Xiaorong |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20140429 |