CN201003580Y - Circulated planet roller screw rod - Google Patents
Circulated planet roller screw rod Download PDFInfo
- Publication number
- CN201003580Y CN201003580Y CNU2007200342095U CN200720034209U CN201003580Y CN 201003580 Y CN201003580 Y CN 201003580Y CN U2007200342095 U CNU2007200342095 U CN U2007200342095U CN 200720034209 U CN200720034209 U CN 200720034209U CN 201003580 Y CN201003580 Y CN 201003580Y
- Authority
- CN
- China
- Prior art keywords
- roller
- screw rod
- leading screw
- concentric
- nut
- 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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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
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- Transmission Devices (AREA)
Abstract
The utility model discloses a circular planet roller screw rod, consisting of a screw rod(5), a concentric roller(2), a nut(4), a cover(3), and cam pressing covers(1). The screw rod(5) is provided with one start threads or multiple threads; the blot(4) is provided with one start threads or multiple threads which have the same thread pitch with the screw rod(5); concentric round grooves(7) which have the equal distance with the threads of the screw rod(5) are parallelly distributed on the concentric roller(2) along the axial direction; the bolts(4) is provided with a return groove(6) which is matched with the cam end surface(8) of the cam pressing covers(1); the concentric roller(2) is guided and kept in the cover(3) and then is arranged on the screw rod(5) through the nut(4); the two ends of the screw rod(5) are provided with the cam pressing covers(1) to restrict the concentric roller(2) and the cover(3) on the proper positions. The utility model has the advantages of simple structure and convenient processing, improving the intensity and service life of the roller screw rod, and satisfying the using requirement of small lead and high precision occasions.
Description
Technical field
The utility model relates to circulation planetary roller leading screw, be to be used for changing straight-line a kind of device into, can be widely used in aspects such as lathe, measuring equipment, navigation system, optical device, camera apparatus, military project, high-tensile strength execution machinery, plastics machinery, the traffic tool rotatablely moving.
Background technique
At present, mainly contain rolling pair leading screw, ball screw and planetary roller leading screw in the straight-line transmission device will rotatablely moving to change into.Ball screw exists bearing capacity difference and poor rigidity and short shortcoming of life-span, and the planetary roller leading screw generally adopts the multiple thread leading screw, exists little helical pitch amount to be difficult to shortcomings such as processing.
Summary of the invention
The purpose of this utility model is: a kind of circulation planetary roller leading screw is provided, improves the intensity of leading screw, increase the service life, can be widely used in little helical pitch and high-precision occasion.
Technical solution of the present utility model is: this ball screw is made up of leading screw, concentric roller, nut, cage cover, cam gland, have single head or multiple thread on the leading screw, have single head or multiple thread on the nut with the leading screw identical pitch, roller upper edge parallel to an axis is arranged and the equally spaced concentric groove of threads of lead screw with one heart, nut is provided with the return slot that cooperates with the cam face of cam gland, with one heart roller is directed and maintains in the cage cover and is installed on the leading screw by nut, installs at the leading screw two ends that the cam gland retrains concentric roller and cage is enclosed within on the correct position.
When leading screw rotates, the concentric groove of the concentric roller of screw-thread fit on the leading screw drives concentric roller and does planetary motion, rotatablely move and move axially for one of concentric roller, one socialize transhipment moving after, the concentric column roller is got back to original state under the effect of nut and cam gland.
The utility model is simple in structure, and is easy to process, improved the intensity and the life-span of ball screw, satisfies the application requirements of little helical pitch and highi degree of accuracy occasion.
Description of drawings
Fig. 1 is the utility model ball screw assembly structure schematic representation.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is leading screw, nut, the concentric roller counterface figure of Fig. 1.
Fig. 4 is the concentric roller schematic representation of Fig. 1.
Fig. 5 is the nut schematic representation of Fig. 1.
Fig. 6 is the cam gland schematic representation of Fig. 1.
Among the figure: 1. cam gland, 2. roller, 3. cage cover, 4. nut, 5. leading screw, 6. return slot, 7. concentric groove, 8. cam face with one heart.
Embodiment
As shown in the figure, this ball screw is by leading screw 5, concentric roller 2, nut 4, cage cover 3, cam gland 1 is formed, have single head or multiple thread on the leading screw 5, have single head or multiple thread on the nut 4 with leading screw 5 identical pitch, concentric roller 2 upper edge parallel to an axiss are arranged the equally spaced concentric groove 7 of screw thread with leading screw 5, nut 4 is provided with transfers the return slot 6 that cooperates with the cam face 8 of cam gland 1, roller 2 is directed and maintains in the cage cover 3 and is installed on the leading screw 5 by nut 4 with one heart, concentric roller 2 of cam gland 1 constraint and cage cover 3 is installed on correct position at leading screw 5 two ends.
By leading screw 5 rotations, promote concentric roller 2 and make planetary motion along the raceway of screw mandrel 5 and nut 4 compositions.As nut 4 is maintained static, then with one heart roller 2 promotes leading screws 5 straight line motion vertically, and as with leading screw 5 axial restraints, 2 of rollers can promote nut 4 and move vertically with one heart.With one heart roller 2 is after planetary motion, inevitable helical pitch of nut 4 axial motions relatively, and concentric roller 2 resets under the cam face 8 of returning groove 6 and cam end cap 1 of nut 4 acts on.
Claims (2)
1. circulation planetary roller leading screw, it is characterized in that: this ball screw is by leading screw (5), concentric roller (2), nut (4), cage cover (3), cam gland (1) is formed, leading screw has single head or multiple thread on (5), have single head or multiple thread on the nut (4) with leading screw (5) identical pitch, roller (2) upper edge parallel to an axis is arranged and the equally spaced concentric groove of leading screw (5) screw thread (7) with one heart, with one heart roller (2) is directed and maintains in the cage cover (3) and is installed on the leading screw (5) by nut (4), cam glands (1) is installed at leading screw (5) two ends is retrained concentric roller (2) and cage cover (3) on correct position.
2. circulation planetary roller leading screw according to claim 1 is characterized in that: nut (4) is provided with the return slot (6) that cooperates with the cam face (8) of cam gland (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200342095U CN201003580Y (en) | 2007-01-31 | 2007-01-31 | Circulated planet roller screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200342095U CN201003580Y (en) | 2007-01-31 | 2007-01-31 | Circulated planet roller screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003580Y true CN201003580Y (en) | 2008-01-09 |
Family
ID=39039117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200342095U Expired - Fee Related CN201003580Y (en) | 2007-01-31 | 2007-01-31 | Circulated planet roller screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201003580Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182806A (en) * | 2011-04-29 | 2011-09-14 | 黄溧震 | Planetary roller 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 |
| 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 |
-
2007
- 2007-01-31 CN CNU2007200342095U patent/CN201003580Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182806A (en) * | 2011-04-29 | 2011-09-14 | 黄溧震 | Planetary roller 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 |
| 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 | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: XU FENG ^ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: Xu Feng Number: 02 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: Xu Feng Number: 02 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ^ TO: XU FENG ^ |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 |