CN106609819A - External circulation cross roller lead screw pair and application method - Google Patents
External circulation cross roller lead screw pair and application method Download PDFInfo
- Publication number
- CN106609819A CN106609819A CN201510690242.2A CN201510690242A CN106609819A CN 106609819 A CN106609819 A CN 106609819A CN 201510690242 A CN201510690242 A CN 201510690242A CN 106609819 A CN106609819 A CN 106609819A
- Authority
- CN
- China
- Prior art keywords
- roller
- lead screw
- screw nut
- feed screw
- outer circulation
- 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.)
- Pending
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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
-
- 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
- F16H2025/2271—Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members with rollers with means for guiding circulating rollers
-
- 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
- F16H2025/228—Screw mechanisms having rollers being supported by the screw shaft and engaging the nut
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides an external circulation cross roller lead screw pair and an application method. The external circulation cross roller lead screw pair mainly comprises a lead screw, a lead screw nut and cylinder rollers; a spiral outer groove is formed in the outer peripheral surface of the lead screw; an inner groove symmetric with the outer groove of the lead screw is formed in the inner peripheral surface of the lead screw nut; the multiple cylinder rollers are sleeved between the lead screw and the lead screw nut, and form a closed rolling way through an external circulation roller guide pipe; the external circulation roller guide pipe is fixed on the lead screw nut through a guide pipe pressing plate; and sealing rings are respectively mounted at two ends of the lead screw nut. The external circulation cross roller lead screw pair is simple in structure principle, and applies a cross roller structure; and compared with a traditional steel ball screw, under the same lead screw diameter, the external circulation cross roller lead screw pair has multiplied dynamic and static load capacity and higher precision retainability, and can be widely applied to such fields as heavy-load mechanical equipment, servo pressure machinery and servo push rods.
Description
Technical field：
The present invention relates to technical field of mechanical transmission, more particularly to a kind of outer circulation crossed roller silk
Bar pair and using method.
Background technology：
Ball screw is actuated element most-often used on machine tool and precision optical machinery, and which is main
Function is to convert rotational motion to linear movement, or moment of torsion is converted into axial repeated action
Power, while having high accuracy, reversibility and efficient feature concurrently.Due to the friction with very little
Resistance, ball-screw are widely used in various industrial equipments and precision instrument.Its important meaning
Justice is exactly that bearing is become scroll actions from sliding action.
On Vehicles Collected from Market, existing ball-screw is arranged on the outer circulation guide pipe on nut external diameter
Great majority are all the layout structure for being arranged in nut the same side, and the ball-screw of this structure is one
As transmission field using very universal；But if simply using electric injection molding machine field
In, the condition such as due to the heavy load by axial direction and frequently reciprocal and installing space is limited
Restriction just seems excessively forced and falls behind.Certainly, with the design and its manufacture of ball-screw
Development, NSK companies of Japan were proposed in electric injection molding machine technology application and were arranged in recent years
The ball-screw of the outer circulation guide pipe 180 ° of symmetric configurations of dislocation on nut outer peripheral face, it is this kind of
Ball-screw plays the effect that good load is carried to carrying axial heavy load；But due to the structure
The outer circulation guide pipe of series of balls leading screw is 180 ° of fixed staggered arrangements, is theoretically divided
Analysis can't be really achieved the purpose of load balancing completely；Especially when outer circulation guide pipe quantity
When odd number more than or equal to 3, and just cannot be with simple in the case where the number of turns is constant
Symmetrical layout versions are realizing the purpose of load equalization；For example outer circulation guide pipe quantity be 5 or
Cannot just realize when 7 or 9 that real load is carried.
Traditional ball screw be with steel ball inside the raceway circulating rolling, its axial load ratio
It is relatively low.
The content of the invention：
In order to solve the above problems, the invention provides a kind of structural principle is simple, with than rolling
The dynamic and static load-carrying ability of ballscrew several times, and higher precision stability, extensively can answer
Used in the technical scheme in the fields such as heavy load plant equipment, servo pressure machinery, servo push-rod：
A kind of outer circulation crossed roller screw pair and using method, mainly include screw mandrel and screw mandrel spiral shell
Female, cylindrical roller, the outer peripheral face of screw mandrel are provided with spiral helicine outer channel, and feed screw nut's is interior
Side face is provided with and the symmetrically arranged internal channel of screw mandrel outer channel, and several cylindrical rollers are socketed in
Between screw mandrel and feed screw nut, and the raceway closed is formed by outer circulation roller conduit, followed outward
Ring roller conduit is fixed on feed screw nut by conduit pressing plate, and the two ends of feed screw nut are respectively mounted
There is sealing ring.
Preferably, the outer channel of screw mandrel is 90 degree of triangular forms, the internal channel of feed screw nut is 90
Triangular form is spent, and the outer channel of screw mandrel is matched with the internal channel of feed screw nut.
Preferably, outer circulation roller conduit is impartial along the spiral escalation of feed screw nut's outer peripheral face
Distribution, the both ends of outer circulation roller conduit are extend in feed screw nut and are connect with the raceway of closing
It is logical.
Preferably, 90 degree of cross arrangements between cylindrical roller, are in, and per two adjacent circles
Roller keeper is equipped between post roller.
Preferably, the outer circumference surface of feed screw nut is low step-like, the silk in middle high, two ends
The big footpath shaft part of stem nut outer circumference surface and path shaft part junction form step surface.
Preferably, the cross section of outer circulation roller guide pipe inner hole is positive square.
Preferably, its using method is mainly included the following steps that：
When A, screw mandrel rotate, the cylinder in the raceway of the closing between leading screw and feed screw nut
Roller under the rotation forces of leading screw pushes above roller keeper along rolling path rolling and transports forward
It is dynamic；
B, cylindrical roller are under the restriction of the outer circulation roller conduit being fixedly connected with feed screw nut
Sequentially enter and pass through outer circulation roller conduit；
C, screw mandrel are subject to axial load, the impartial arrangement of feed screw nut's outer peripheral face spiral escalation
Load balancing suffered by screw mandrel is distributed by structure；
D, caused between feed screw nut and screw mandrel along spiral by the cylindrical roller of cross arrangement
Raceway is formed and rolls movement, and carries axial direction and radial force, keeps higher precision.
The beneficial effects of the present invention is：
(1) present configuration principle is simple, has used crossed roller structure, has been different from tradition
Steel ball ball screw, in equal screw mandrel diameter, with more dynamic and static than ball screw several times
Load-carrying ability, and higher precision stability, can be widely used in heavy load plant equipment,
The fields such as servo pressure machinery, servo push-rod.
(2) present invention leaves gap between cylindrical roller and the raceway of closing, and gap is easy to
Cylindrical roller is moved, and is reduced the friction between cylindrical roller and raceway, is improve the use of leading screw
Life-span.
Description of the drawings：
Fig. 1 is the Structure explosion diagram of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is the rearview of the present invention；
Fig. 4 is the A-A of the present invention to sectional view.
Specific embodiment：
To make goal of the invention, technical scheme and the advantage of the present invention clearer, below in conjunction with
Accompanying drawing is described in further detail to embodiments of the present invention.
As Figure 1-4, a kind of outer circulation crossed roller screw pair and using method, it is main to wrap
Screw mandrel 1 and feed screw nut 2, cylindrical roller 3 are included, the outer peripheral face of the screw mandrel 1 is provided with spiral shell
The outer channel of rotation shape, the inner peripheral surface of the feed screw nut 2 are provided with symmetrical with 1 outer channel of screw mandrel
The internal channel of setting, several cylindrical rollers 3 are socketed in the screw mandrel 1 and the feed screw nut
Between 2, and the raceway of closing is formed by outer circulation roller conduit 4, cylindrical roller 3 with
Gap is left between the raceway of closing, gap is easy to cylindrical roller to move, reduce cylindrical roller with
Friction between raceway, improves the service life of leading screw, the outer circulation roller conduit 4 by
Conduit pressing plate 5 is fixed on the feed screw nut 2,4 endoporus of outer circulation roller conduit it is transversal
Face is positive square, and the two ends of the feed screw nut 2 are separately installed with sealing ring 6.
The outer channel of screw mandrel 1 is 90 degree of triangular forms, and the internal channel of the feed screw nut 2 is 90 degree three
Angle-style, and the outer channel of screw mandrel 1 matched with the internal channel of feed screw nut 2, cylindrical roller 3 it
Between be in 90 degree of cross arrangements, and per roller guarantor is equipped between two adjacent cylindrical rollers 3
Holder, outer circulation roller conduit 4 along 2 outer peripheral face spiral escalation equal distribution of feed screw nut,
The both ends of the outer circulation roller conduit 4 extend in feed screw nut 2 and the raceway with closing
Connect.
Its using method is mainly included the following steps that：
When A, screw mandrel 1 rotate, the circle in the raceway of the closing between leading screw 1 and feed screw nut 2
Post roller 3 under the rotation forces of leading screw 1 along rolling path rolling push above roller keeper to
Front motion；
The restriction of B, cylindrical roller 3 in the outer circulation roller conduit 4 being fixedly connected with feed screw nut 2
Under sequentially enter and pass through outer circulation roller conduit 4；
C, screw mandrel 1 are subject to axial load, the impartial row of 2 outer peripheral face spiral escalation of feed screw nut
Load balancing suffered by screw mandrel is distributed by array structure；
D, by the cylindrical roller 3 of cross arrangement cause between feed screw nut 2 and screw mandrel 1 along spiral shell
Rotary roll road is formed and rolls movement, and carries axial direction and radial force, keeps higher precision.
In addition, in the present embodiment, the outer circumference surface of the feed screw nut 2 is middle high, two ends
Low is step-like, the big footpath shaft part of 2 outer circumference surface of the feed screw nut and path shaft part junction
Form step surface.Processing on feed screw nut 2 is facilitated to form inner ring raceway, it is ensured that feed screw nut 2
Use intensity, while facilitating the assembling of driving pulley.
When screw mandrel 1 is subject to axial load, the cylindrical roller 3 in outer circulating roller conduit 4
The load of very little is born, and real load is by the rolling of the closing in feed screw nut 2 and screw mandrel 1
It is unbalanced that cylindrical roller 3 in road forms load bearing, thus, using feed screw nut 2
The impartial arrangement architecture of outer peripheral face spiral escalation realizing the equalization of 1 power load distributing of screw mandrel,
Caused between feed screw nut 2 and screw mandrel 1 along spiral rolling track by the cylindrical roller 3 of cross arrangement
Formed and roll movement, and carry axial direction and radial force.And in equal screw mandrel diameter, with than
The dynamic and static load-carrying ability of ball screw several times, and higher precision stability.
The beneficial effects of the present invention is：Present configuration principle is simple, has used crossed roller
Structure, is different from traditional steel ball ball screw, in equal screw mandrel diameter, with than ball
The dynamic and static load-carrying ability of screw mandrel several times, and higher precision stability, extensively can apply
In fields such as heavy load plant equipment, servo pressure machinery, servo push-rods；Cylindrical roller with
Gap is left between the raceway of closing, gap is easy to cylindrical roller to move, reduce cylindrical roller with
Friction between raceway, improves the service life of leading screw.
Above-described embodiment is presently preferred embodiments of the present invention, is not to technical solution of the present invention
Restriction, as long as can realize on the basis of above-described embodiment without creative work
Technical scheme, is regarded as falling in the rights protection scope of patent of the present invention.
Claims (7)
1. a kind of outer circulation crossed roller screw pair and using method, it is characterised in that：Mainly include
Screw mandrel and feed screw nut, cylindrical roller, the outer peripheral face of the screw mandrel are provided with spiral helicine outer fissure
Groove, the inner peripheral surface of the feed screw nut are provided with and the symmetrically arranged internal channel of screw mandrel outer channel,
Several cylindrical rollers are socketed between the screw mandrel and the feed screw nut, and pass through outer circulation
Roller conduit forms the raceway of closing, and the outer circulation roller conduit is fixed on institute by conduit pressing plate
State on feed screw nut, the two ends of the feed screw nut are separately installed with sealing ring.
2. a kind of outer circulation crossed roller screw pair according to claim 1 and using method, its
It is characterised by：The outer channel of the screw mandrel is 90 degree of triangular forms, the internal channel of the feed screw nut
It is 90 degree of triangular forms, and the outer channel of screw mandrel is matched with the internal channel of feed screw nut.
3. a kind of outer circulation crossed roller screw pair according to claim 1 and using method, its
It is characterised by：The outer circulation roller conduit is impartial along the spiral escalation of feed screw nut's outer peripheral face
Distribution, the both ends of the outer circulation roller conduit extend in feed screw nut and the rolling with closing
Road is connected.
4. a kind of outer circulation crossed roller screw pair according to claim 1 and using method, its
It is characterised by：90 degree of cross arrangements are between the cylindrical roller, and per two adjacent circles
Roller keeper is equipped between post roller.
5. a kind of outer circulation crossed roller screw pair according to claim 1 and using method, its
It is characterised by：The outer circumference surface of the feed screw nut is low step-like in middle high, two ends,
The big footpath shaft part of feed screw nut's outer circumference surface and path shaft part junction form step surface.
6. a kind of outer circulation crossed roller screw pair according to claim 1 and using method, its
It is characterised by：The cross section of the outer circulation roller guide pipe inner hole is positive square.
7. a kind of outer circulation crossed roller screw pair according to claim 1 and using method, its
It is characterised by：Its using method is mainly included the following steps that：
When A, screw mandrel rotate, the cylindrical roller in the raceway of the closing between leading screw and feed screw nut
Above roller keeper is push along rolling path rolling under the rotation forces of leading screw to travel forward；
B, cylindrical roller under the restriction of the outer circulation roller conduit being fixedly connected with feed screw nut successively
Enter and pass through outer circulation roller conduit；
C, screw mandrel are subject to axial load, the impartial arrangement architecture of feed screw nut's outer peripheral face spiral escalation
Load balancing suffered by screw mandrel is distributed；
D, caused between feed screw nut and screw mandrel along spiral rolling track by the cylindrical roller of cross arrangement
Formed and roll movement, and carry axial direction and radial force, keep higher precision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690242.2A CN106609819A (en) | 2015-10-21 | 2015-10-21 | External circulation cross roller lead screw pair and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510690242.2A CN106609819A (en) | 2015-10-21 | 2015-10-21 | External circulation cross roller lead screw pair and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106609819A true CN106609819A (en) | 2017-05-03 |
Family
ID=58611441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510690242.2A Pending CN106609819A (en) | 2015-10-21 | 2015-10-21 | External circulation cross roller lead screw pair and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106609819A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685462A (en) * | 2021-08-30 | 2021-11-23 | 湖南大学 | Spiral raceway pressurizing mechanism of brake |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1679454A1 (en) * | 2003-10-20 | 2006-07-12 | Thk Co., Ltd. | Roller screw |
| KR101297882B1 (en) * | 2005-03-09 | 2013-08-19 | 티에치케이 가부시끼가이샤 | Roller screw and method for circulating roller of roller screw |
| CN103511576A (en) * | 2012-06-29 | 2014-01-15 | 上银科技股份有限公司 | Roller screw rod with spacing bodies |
| US9127715B2 (en) * | 2012-07-16 | 2015-09-08 | Hiwin Technologies Corp. | Bearing device for motion guide device |
| CN205064739U (en) * | 2015-10-21 | 2016-03-02 | 王心成 | Extrinsic cycle cross roller lead screw is vice |
-
2015
- 2015-10-21 CN CN201510690242.2A patent/CN106609819A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1679454A1 (en) * | 2003-10-20 | 2006-07-12 | Thk Co., Ltd. | Roller screw |
| KR101297882B1 (en) * | 2005-03-09 | 2013-08-19 | 티에치케이 가부시끼가이샤 | Roller screw and method for circulating roller of roller screw |
| CN103511576A (en) * | 2012-06-29 | 2014-01-15 | 上银科技股份有限公司 | Roller screw rod with spacing bodies |
| US9127715B2 (en) * | 2012-07-16 | 2015-09-08 | Hiwin Technologies Corp. | Bearing device for motion guide device |
| CN205064739U (en) * | 2015-10-21 | 2016-03-02 | 王心成 | Extrinsic cycle cross roller lead screw is vice |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685462A (en) * | 2021-08-30 | 2021-11-23 | 湖南大学 | Spiral raceway pressurizing mechanism of brake |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170503 |